手機衛士-01

課1

課程介紹

課2

新建項目phoneSafeguard

需求1：打開軟件可以顯示一個歡迎界面，一般是公司的logo

SplashActivity.java

public class SplashActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //設置沒有標題,以下兩行代碼順序注意
        requestWindowFeature(Window.FEATURE_NO_TITLE);//設置歡迎界面
        setContentView(R.layout.activity_splash);

//      JSONObject json = new JSONObject();

    }

}

activity_splash.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
   android:background="#88000000" >

    <ImageView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_centerInParent="true"
        />

    <ProgressBar />

    <TextView 
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="版本號"/>
</RelativeLayout>

json：

（JavaScript object Notation）是一種輕量級的數據交換形式。易於人閱讀和編寫。同時是易於機器解析和編寫

xml（傳輸數據耗流量）例如： zhangsan

以上都用來傳輸數據

演示json

{"downloadurl":"http://192.168.1.100:8080/xxx.apk","Version":"2","desc":"下載安裝送大禮包"}//key和value

把以上代碼寫在新建文件info.json並放在tomcat服務器裏提供給別人下載

課3

演示更新功能

更新的流程圖（步驟）

1、請求服務器下載json文件，並解析json數據 
2、判斷版本號是否一致 
    1、版本相同：進入主界面 
    2、版本不同：彈出對話框 
        1、更新：提供下載鏈接：讀取數據進行升級後進入主界面 
        2、不更新：進入主頁面

權限：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.itheima.phonesafeguard"
    android:versionCode="1"
    android:versionName="1.0"
    android:installLocation="auto" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="17" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.itheima.phonesafeguard.SplashActivity"
            android:label="@string/app_name" 
            android:screenOrientation="portrait"
            >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.itheima.phonesafeguard.MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait"></activity>
    </application>

</manifest>

佈局：activity_splash.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
   android:background="#88000000" >

    <ImageView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_centerInParent="true"
        android:id="@+id/image_View"
        />

    <ProgressBar
        android:id="@+id/pb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_below="@id/image_View"
         />

    <TextView 
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="版本號"/>
</RelativeLayout>

SplashActivity.java

public class SplashActivity extends Activity {
    protected String downloadurl;
    protected String desc;
    protected int version;
    //演示xUtils
    //這種方式就可以直接使用image_view去讀取網絡路徑的圖片
    @ViewInject(R.id.image_View)
    private ImageView image_view;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //設置沒有標題,以下兩行代碼順序注意
        requestWindowFeature(Window.FEATURE_NO_TITLE);//設置歡迎界面
        setContentView(R.layout.activity_splash);


//      JSONObject json = new JSONObject();

        /**
         * 獲取包的管理者
         * <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.itheima.phonesafeguard"
    android:versionCode="1"
    android:versionName="1.0"
    android:installLocation="auto" >
         */
        PackageManager pm = getPackageManager();

        try {
            //獲取到安裝包的基本信息
//          PackageInfo packageinfo = pm.getPackageInfo("com.itheima.phonesafeguard", 0);
            //可以寫活
            PackageInfo packageinfo = pm.getPackageInfo(getPackageName(), 0);

            //獲取版本號
            int versionCode  = packageinfo.versionCode;
            System.out.println("版本號"+versionCode);

            //解析服務器下載下來的json數據，解析版本號
            //加上聯網權限
            checkVersion();

        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }

    }

    private void checkVersion() {
        //這也是一種獲取線程的方法:開啓線程池：比我們用的一般開啓線程的方法優點多
//      ExecutorService Executorpool =  Executors.newFixedThreadPool(nThreads);

        //寫子線程來聯網
        new Thread(){


            public void run(){
                //寫業務邏輯
                try {
                    //初始化url連接
                    URL url = new URL("http://192.168.1.100:8080/info.json");
                    //獲取聯網的conn
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    //設置請求方法
                    conn.setRequestMethod("GET");
                    //設置請求超時時間
                    conn.setConnectTimeout(5000);//5秒
                    //獲取服務器返回的code編碼
                    int code = conn.getResponseCode();
                    //如果code等於200的話，成功
                    if(code == 200){
                        //獲取服務器的流數據
                        InputStream is = conn.getInputStream();

                        //獲取服務器返回的數據
                        String json = StreamUtils.readStream(is);
                        //解析從服務器獲取的數據
                        JSONObject obj = new JSONObject(json);

                        //解析json
                        /*
                         * {"downloadurl":"http://192.168.1.100:8080/xxx.apk","Version":"2","desc":"下載安裝送大禮包"}
                         *key是唯一的
                         */
                        //獲取到下載到的url地址
                        downloadurl = obj.getString("downloadurl");
                        //獲取到描述信息
                        desc = obj.getString("desc");
                        //獲取版本信息
                        version = obj.getInt("version");

                        //打印測試
                        System.out.println("downloadurl--->"+downloadurl);
                        System.out.println("desc--->"+desc);
                        System.out.println("version--->"+version);

                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            };
        }.start();
    }

}

課4

google-gson下載

使用gson

在xutils裏配合使用，效率很高

完成課3的邏輯

SplashActivity.java

public class SplashActivity extends Activity {
    //展示對話框
    protected static final int SHOW_DIALOG = 0;
    //進入主界面
    protected static final int ENTERMAIN = 1;
    protected String downloadurl;
    protected String desc;
    protected int version;
    //演示xUtils
    //這種方式就可以直接使用image_view去讀取網絡路徑的圖片
    @ViewInject(R.id.image_View)
    private ImageView image_view;

    private Handler handler  = new Handler(){
        public void handleMessage(android.os.Message msg) {
            //做彈框操作
            switch(msg.what){
            case SHOW_DIALOG:
                AlertDialog.Builder builder = new Builder(SplashActivity.this);
                builder.setTitle("有新版本");
                builder.setMessage("穩定性很好");
                builder.setPositiveButton("更新", new OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub

                    }
                });
                builder.setNegativeButton("取消", new OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
                builder.show();
                break;
            case ENTERMAIN:
                mainUI();
                break;
            }
        };
    };
    private int versionCode;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //設置沒有標題,以下兩行代碼順序注意
        requestWindowFeature(Window.FEATURE_NO_TITLE);//設置歡迎界面
        setContentView(R.layout.activity_splash);


//      JSONObject json = new JSONObject();

        /**
         * 獲取包的管理者
         * <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.itheima.phonesafeguard"
    android:versionCode="1"
    android:versionName="1.0"
    android:installLocation="auto" >
         */
        PackageManager pm = getPackageManager();

        try {
            //獲取到安裝包的基本信息
//          PackageInfo packageinfo = pm.getPackageInfo("com.itheima.phonesafeguard", 0);
            //可以寫活
            PackageInfo packageinfo = pm.getPackageInfo(getPackageName(), 0);

            versionCode = packageinfo.versionCode;
            System.out.println("版本號"+versionCode);

            //解析服務器下載下來的json數據，解析版本號
            //加上聯網權限
            checkVersion();//不推薦！實際中效率會很低，我們不可能手動去導出海量的json數據
            //Xtils的解析json方法
//          checkVersion2();//效率高，但黑馬課程大綱不做要求


        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }

    }

    //使用xUtil來獲取版本號
    private void checkVersion2(){
        HttpUtils httpUtils = new HttpUtils();
        //這裏的URL最好不要寫死，因爲我們要測試
        httpUtils.send(HttpMethod.GET, HMAPI.url, new RequestCallBack<String>() {

            @Override
            public void onFailure(HttpException arg0, String arg1) {

            }

            @Override
            public void onSuccess(ResponseInfo<String> arg0) {
                //自動解析json
                System.out.println("result:"+arg0);
                /**
                 * google-gson下載

使用gson

在xutils裏配合使用，效率很高
                 */
//              Gson gson = new Gson();
//              mobileInfo info = gson.fromJson(arg0.result,mobileInfo.class);
//              System.out.println("result:"+arg0);

            }

        });

    }

    private void checkVersion() {
        //這也是一種獲取線程的方法:開啓線程池：比我們用的一般開啓線程的方法優點多
//      ExecutorService Executorpool =  Executors.newFixedThreadPool(nThreads);

        //寫子線程來聯網
        new Thread(){
//          Message msg = new Message();
            Message msg = Message.obtain();//從池中拿消息

            public void run(){
                //寫業務邏輯
                try {
                    //初始化url連接
                    URL url = new URL(HMAPI.url);
                    //獲取聯網的conn
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    //設置請求方法
                    conn.setRequestMethod("GET");
                    //設置請求超時時間
                    conn.setConnectTimeout(5000);//5秒
                    //獲取服務器返回的code編碼
                    int code = conn.getResponseCode();
                    //如果code等於200的話，成功
                    if(code == 200){
                        //獲取服務器的流數據
                        InputStream is = conn.getInputStream();

                        //獲取服務器返回的數據
                        String json = StreamUtils.readStream(is);

                        if(!TextUtils.isEmpty(json)){

                            //解析從服務器獲取的數據
                            JSONObject obj = new JSONObject(json);

                            //解析json
                            /*
                             * {"downloadurl":"http://192.168.1.100:8080/xxx.apk","Version":"2","desc":"下載安裝送大禮包"}
                             *key是唯一的
                             */
                            //獲取到下載到的url地址
                            downloadurl = obj.getString("downloadurl");
                            //獲取到描述信息
                            desc = obj.getString("desc");
                            //獲取版本信息
                            version = obj.getInt("version");

                            System.out.println("-----------------------------------");

                            //打印測試
                            System.out.println("downloadurl--->"+downloadurl);
                            System.out.println("desc--->"+desc);
                            System.out.println("version--->"+version);

                            //判斷本地的版本號和服務器返回的版本號做對比
                            if(version == versionCode){
                                //跳刀
                                mainUI();
                                System.out.println("版本號相同");
                                msg.what = ENTERMAIN;
                                handler.sendMessage(msg);
                            }else{
                                System.out.println("版本號不同");

                                msg.what = SHOW_DIALOG;
                                handler.sendMessage(msg);
                            }
                        }


                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }


        }.start();
    }
    protected void mainUI() {
        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
        startActivity(intent);
        finish();
    };

}

mobileInfo.java

package com.itheima.phonesafeguard.bean;

public class mobileInfo {
    private String downloadurl;
    private int version;
    private String desc;
    public String getDownloadurl() {
        return downloadurl;
    }
    public void setDownloadurl(String downloadurl) {
        this.downloadurl = downloadurl;
    }
    public int getVersion() {
        return version;
    }
    public void setVersion(int version) {
        this.version = version;
    }
    public String getDesc() {
        return desc;
    }
    public void setDesc(String desc) {
        this.desc = desc;
    }
    @Override
    public String toString() {
        return "mobileInfo [downloadurl=" + downloadurl + ", version="
                + version + ", desc=" + desc + "]";
    }

}

HMAPI.java

package com.itheima.Utils;

public class HMAPI {
    //如果不需要再改的東西儘量封裝起來，爲以後大量的信息修改提供查看便捷

    public static String BASEURL = "http://192.168.1.100:8080/";

    public static String url = BASEURL+"info.json";

}

StreamUtils.java

public class StreamUtils {
    public static String readStream(InputStream is){
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len = -1;
            while ((len = is.read(buffer)) != -1) {
                baos.write(buffer, 0, len);
            }
            is.close();
            return new String(baos.toByteArray());
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}

課5

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >



    <TextView
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:background="@drawable/ic_launcher"
        android:gravity="center"
        android:text="主界面" />

    <!--android:ellipsize="marquee" 表示可以讓textview移動 -->
    <com.itheima.mobile47.view.CustomTextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:singleLine="true"
        android:ellipsize="marquee"
        android:focusableInTouchMode="true"
        android:textColor="#E2DED8"
        android:text="歡迎使用我的手機衛士，只要您使用了我爲您親身定製了的手機衛士，一定會感覺自己萌萌噠噠噠噠噠噠！！！"

        />


    <GridView
        android:id="@+id/grid_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="10dp"
        android:verticalSpacing="10dp"
        android:numColumns="3" >
    </GridView>

</LinearLayout>

itemmaingridview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
   android:gravity="center"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/iv_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/ic_launcher" />


    <TextView 
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="手機殺毒"
        />

</LinearLayout>

CustomTextView.java

package com.itheima.phonesafeguard.view;

public class CustomTextView extends TextView {

    public CustomTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        // TODO Auto-generated constructor stub
    }

    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }

    public CustomTextView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    @Override
    @ExportedProperty(category = "focus")
    public boolean isFocused() {
        // TODO Auto-generated method stub
        return true;
    }

}

MainActivity.java

package com.itheima.phonesafeguard;

public class MainActivity extends Activity {
    private String[] names = {"手機防盜","通訊衛視","軟件管家","進程管理","流量統計","手機殺毒","緩存清理","高級工具","設置中心"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        //初始化界面
        initView();
    }


    private void initView() {
        GridView grid_view = (GridView) findViewById(R.id.grid_view);
        MainAdapter adapter = new MainAdapter();
        grid_view.setAdapter(adapter);
    }

    //適配器
    private class MainAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return names.length;
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return names[position];
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = View.inflate(MainActivity.this, R.layout.item_main_gridview, null);
            TextView tv_name = (TextView) view.findViewById(R.id.tv_name);
            tv_name.setText(names[position]);
            return view;
        }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

SplashActivity.java

package com.itheima.phonesafeguard;

public class SplashActivity extends Activity {
    //展示對話框
    protected static final int SHOW_DIALOG = 0;
    //進入主界面
    protected static final int ENTERMAIN = 1;
    protected String downloadurl;
    protected String desc;
    protected int version;
    //演示xUtils
    //這種方式就可以直接使用image_view去讀取網絡路徑的圖片
    @ViewInject(R.id.image_View)
    private ImageView image_view;
    private Handler handler  = new Handler(){
        public void handleMessage(android.os.Message msg) {
            //做彈框操作
            switch(msg.what){
            case SHOW_DIALOG:
                AlertDialog.Builder builder = new Builder(SplashActivity.this);
                builder.setTitle("有新版本");
                builder.setMessage("穩定性很好");
                builder.setPositiveButton("更新", new OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
//                      mainUI();
                        //下載apk方法
                        downloadapk();
                    }


                });
                builder.setNegativeButton("取消", new OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        mainUI();
                    }
                });
                builder.show();
                break;
            case ENTERMAIN:
                mainUI();
                break;
            }
        };
    };
    private int versionCode;

    private void downloadapk() {
        HttpUtils httpUtils = new HttpUtils();
        /**
         * 下載數據
         * 第一個參數是要下載的URL地址
         * 第二個參數表示下載之後放置的位置
         */
        httpUtils.download(downloadurl, "/mnt/sdcard/temp.apk", new RequestCallBack<File>() {

            @Override
            public void onFailure(HttpException arg0, String arg1) {
                Toast.makeText(SplashActivity.this, "下載失敗", 0).show();
                mainUI();
            }

            @Override
            public void onSuccess(ResponseInfo<File> arg0) {
                Toast.makeText(SplashActivity.this, "下載成功", 0).show();
                System.out.println("下載成功");

                //加入安裝的代碼
                // 啓動安裝的隱式意圖
                Intent intent = new Intent();
                intent.setAction("android.intent.action.VIEW");
                intent.addCategory("android.intent.category.DEFAULT");
                intent.setDataAndType(Uri.fromFile(new File(Environment
                        .getExternalStorageDirectory(), "temp.apk")),
                        "application/vnd.android.package-archive");
                startActivity(intent);
            }

        });
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //設置沒有標題,以下兩行代碼順序注意
        requestWindowFeature(Window.FEATURE_NO_TITLE);//設置歡迎界面
        setContentView(R.layout.activity_splash);
        ViewUtils.inject(this);

//      JSONObject json = new JSONObject();

        /**
         * 獲取包的管理者
         * <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.itheima.phonesafeguard"
    android:versionCode="1"
    android:versionName="1.0"
    android:installLocation="auto" >
         */
        PackageManager pm = getPackageManager();

        try {
            //獲取到安裝包的基本信息
//          PackageInfo packageinfo = pm.getPackageInfo("com.itheima.phonesafeguard", 0);
            //可以寫活
            PackageInfo packageinfo = pm.getPackageInfo(getPackageName(), 0);

            versionCode = packageinfo.versionCode;
            System.out.println("版本號"+versionCode);

            //解析服務器下載下來的json數據，解析版本號
            //加上聯網權限
            checkVersion();//不推薦！實際中效率會很低，我們不可能手動去導出海量的json數據
            //Xtils的解析json方法
//          checkVersion2();//效率高，但黑馬課程大綱不做要求


        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }

    }

    //使用xUtil來獲取版本號
    private void checkVersion2(){
        HttpUtils httpUtils = new HttpUtils();
        //這裏的URL最好不要寫死，因爲我們要測試
        httpUtils.send(HttpMethod.GET, HMAPI.url, new RequestCallBack<String>() {

            @Override
            public void onFailure(HttpException arg0, String arg1) {

            }

            @Override
            public void onSuccess(ResponseInfo<String> arg0) {
                //自動解析json
                System.out.println("result:"+arg0);
                /**
                 * google-gson下載

使用gson

在xutils裏配合使用，效率很高
                 */
//              Gson gson = new Gson();
//              mobileInfo info = gson.fromJson(arg0.result,mobileInfo.class);
//              System.out.println("result:"+arg0);

            }

        });

    }

    private void checkVersion() {
        //這也是一種獲取線程的方法:開啓線程池：比我們用的一般開啓線程的方法優點多
//      ExecutorService Executorpool =  Executors.newFixedThreadPool(nThreads);

        //寫子線程來聯網
        new Thread(){
//          Message msg = new Message();
            Message msg = Message.obtain();//從池中拿消息

            public void run(){
                //寫業務邏輯
                try {
                    //初始化url連接
                    URL url = new URL(HMAPI.url);
                    //獲取聯網的conn
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    //設置請求方法
                    conn.setRequestMethod("GET");
                    //設置請求超時時間
                    conn.setConnectTimeout(5000);//5秒
                    //獲取服務器返回的code編碼
                    int code = conn.getResponseCode();
                    //如果code等於200的話，成功
                    if(code == 200){
                        //獲取服務器的流數據
                        InputStream is = conn.getInputStream();

                        //獲取服務器返回的數據
                        String json = StreamUtils.readStream(is);

                        if(!TextUtils.isEmpty(json)){

                            //解析從服務器獲取的數據
                            JSONObject obj = new JSONObject(json);

                            //解析json
                            /*
                             * {"downloadurl":"http://192.168.1.100:8080/xxx.apk","Version":"2","desc":"下載安裝送大禮包"}
                             *key是唯一的
                             */
                            //獲取到下載到的url地址
                            downloadurl = obj.getString("downloadurl");
                            //獲取到描述信息
                            desc = obj.getString("desc");
                            //獲取版本信息
                            version = obj.getInt("version");

                            System.out.println("-----------------------------------");

                            //打印測試
                            System.out.println("downloadurl--->"+downloadurl);
                            System.out.println("desc--->"+desc);
                            System.out.println("version--->"+version);

                            //判斷本地的版本號和服務器返回的版本號做對比
                            if(version == versionCode){
                                //調到
                                mainUI();
                                System.out.println("版本號相同");
                                msg.what = ENTERMAIN;
                                handler.sendMessage(msg);
                            }else{
                                System.out.println("版本號不同");

                                msg.what = SHOW_DIALOG;
                                handler.sendMessage(msg);
                            }
                        }


                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }


        }.start();
    }
    protected void mainUI() {
        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
        startActivity(intent);
        finish();
    };

}

課6

準備給手機衛士的開始界面嵌入訊飛的語音識別代碼

首先要導入包瞭解老師的語音識別代碼例子：記住複製代碼到這裏來把代碼嵌入到手機衛士工程中導入金山的按鈕圖片到drawable-hdpi中 bitmap:只jpg，png等等，即只是單純的圖片 drawable：還包括所有的資源

這節課主要是修改按鈕點擊風格。在drawable目錄下新建selector.xml 在裏面通過item去設置點擊還有其他動作的資源反應並一次生成9個xml 每個xml所對應的圖片資源要自定義好然後在MainActivity裏導入這些資源來使用icon[] 在MyAdapter裏的getView方法裏調用然後修改界面邊幅

selector_1.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
     <item android:state_pressed="true"
          android:drawable="@drawable/main_start_item_manager_icon_pressed" /> <!-- pressed -->
    <item android:state_focused="true"
          android:drawable="@drawable/main_start_item_manager_icon_pressed" /> <!-- focused -->

    <item android:drawable="@drawable/main_start_item_manager_icon" /> <!-- default -->

</selector>

MainActivity.java

private int[] icons = { R.drawable.selector_1, R.drawable.selector_2,
        R.drawable.selector_3, R.drawable.selector_4,
        R.drawable.selector_5, R.drawable.selector_6,
        R.drawable.selector_7, R.drawable.selector_8,
        R.drawable.selector_9, };

private void initView() {
    GridView grid_view = (GridView) findViewById(R.id.grid_view);

    grid_view.setOnItemClickListener(this);
    MainAdapter adapter = new MainAdapter();
    grid_view.setAdapter(adapter);
}


private class MainAdapter extends BaseAdapter {

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return names.length;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return names[position];
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = View.inflate(MainActivity.this,
                R.layout.item_main_gridview, null);
        TextView tv_name = (TextView) view.findViewById(R.id.tv_name);
        tv_name.setText(names[position]);
        ImageView iv_icon = (ImageView) view.findViewById(R.id.iv_icon);
        iv_icon.setImageResource(icons[position]);
        return view;
    }

}

繼續實現手機防盜功能

給按鈕添加點擊事件（GridView的點擊事件）

public class MainActivity extends Activity implements OnItemClickListener { 點擊功能後彈出一個對話框

MainActivity.java

/**
 * gridview的點擊事件
 */
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
        long id) {
    switch (position) {
    case 0:

        //判斷當前是否設置過防盜的密碼
        if(TextUtils.isEmpty(isPwd())){
            //說明沒有設置
            setSetupPwd();
        }else{
            //說明設置了密碼
            setEnterUpPwd();
        }



        break;

    default:
        break;
    }

}
/**
 * 已經設置過密碼
 */
private void setEnterUpPwd() {
     AlertDialog.Builder builder = new Builder(MainActivity.this);
        View dialog_view = View.inflate(MainActivity.this, R.layout.dialog_enter_pwd_main, null);
        et_pwd = (EditText) dialog_view.findViewById(R.id.et_pwd);


        Button bt_ok = (Button) dialog_view.findViewById(R.id.bt_ok);
        Button bt_cancel = (Button) dialog_view.findViewById(R.id.bt_cancel);

        bt_ok.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                //獲取密碼裏面的值。然後判斷2次輸入的值是否一樣
                String et_password = et_pwd.getText().toString().trim();


                if(TextUtils.isEmpty(et_password) ){
                    return ;
                }
                String pwd = sp.getString("pwd", "");

                //如果sp裏面緩存的密碼和輸入的密碼一樣的話。那麼就進入防盜的引導界面
                if(et_password.equals(pwd)){
                    Intent intent = new Intent(MainActivity.this,GuideActivity1.class);
                    startActivity(intent);
                    finish();
                }else{
                    Toast.makeText(MainActivity.this, "2次密碼不一致", 0).show();
                }

            }
        });
        bt_cancel.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                dialog.dismiss();

            }
        });
       builder.setView(dialog_view);


        dialog = builder.show();

}

新建dialogsetuppwd_main.xml佈局新界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#88ff0000"
        android:gravity="center"
        android:text="請輸入防盜密碼"
        android:textColor="#000"
        android:textSize="24sp" />

    <EditText
        android:id="@+id/et_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="請輸入密碼"
        android:inputType="phone"
        android:password="true" />

     <EditText
        android:id="@+id/et_queren"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:hint="請確認密碼"
        android:inputType="phone"
        android:password="true"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/bt_ok"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/btn_selector"
            android:text="確定" />

        <Button
            android:id="@+id/bt_cancel"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/btn_selector"
            android:text="取消" />
    </LinearLayout>

</LinearLayout>

該界面是設置防盜密碼

給確定和取消按鈕添加選擇器（選擇器放在drawable）

MainActivity.java

/**
     * gridview的點擊事件
     */
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        switch (position) {
        case 0:

            //判斷當前是否設置過防盜的密碼
            if(TextUtils.isEmpty(isPwd())){
                //說明沒有設置
                setSetupPwd();
            }else{
                //說明設置了密碼
                setEnterUpPwd();
            }



            break;

        default:
            break;
        }

    }

private String isPwd() {
    String str = sp.getString("pwd", "");

    return str;
}

btn_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
       <item android:state_pressed="true"
          android:drawable="@drawable/btn_green_pressed" /> <!-- pressed -->
    <item android:state_focused="true"
          android:drawable="@drawable/btn_green_pressed" /> <!-- focused -->

    <item android:drawable="@drawable/btn_green_normal" /> <!-- default -->

</selector>

課7

給確定和取消按鈕添加功能

如果輸入正確，就把密碼存在緩存裏，使用sharedPreference存儲再dialog.dismiss();

MainActivity.java

  /**
     * 第一次進來的時候。如果沒有設置密碼。請設置密碼界面
     */
    private void setSetupPwd() {
          AlertDialog.Builder builder = new Builder(MainActivity.this);
            View dialog_view = View.inflate(MainActivity.this, R.layout.dialog_setup_pwd_main, null);
            et_pwd = (EditText) dialog_view.findViewById(R.id.et_pwd);
            et_queren = (EditText) dialog_view.findViewById(R.id.et_queren);


            Button bt_ok = (Button) dialog_view.findViewById(R.id.bt_ok);
            Button bt_cancel = (Button) dialog_view.findViewById(R.id.bt_cancel);

            bt_ok.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    //獲取密碼裏面的值。然後判斷2次輸入的值是否一樣
                    String et_password = et_pwd.getText().toString().trim();

                    String et_querenPassword = et_queren.getText().toString().trim();

                    if(TextUtils.isEmpty(et_password) ){
                        return ;
                    }
                    if(TextUtils.isEmpty(et_querenPassword)){
                        return;
                    }
                    if(et_password.equals(et_querenPassword)){
                        Editor edit = sp.edit();
                        edit.putString("pwd", et_password);
                        edit.commit();
                        dialog.dismiss();
                    }else{
                        Toast.makeText(MainActivity.this, "2次密碼不一致", 0).show();
                    }

                }
            });
            bt_cancel.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    dialog.dismiss();

                }
            });
           builder.setView(dialog_view);


            dialog = builder.show();

    }

取消鍵就dialog.dismiss();//關閉對話框

在存儲了密碼後就判斷sp裏面是否有值，即每次打開手機防盜功能時都檢查sp裏面是否有值，沒有就彈出設置密碼框(執行setSetUpPwd方法)：進入dialogenterpwdmain.xml，有就彈出進入到另一個界面(執行setEnterUpPwd方法)：dialogsetuppwdmain.xml該界面會判斷sp裏的密碼和用戶輸入的密碼是否一樣，一樣就進入新的界面(引導界面)：GuideActivity1（新建+配置清單文件）

dialogenterpwd_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#88ff0000"
        android:gravity="center"
        android:text="請輸入防盜密碼"
        android:textColor="#000"
        android:textSize="24sp" />

    <EditText
        android:id="@+id/et_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:hint="請輸入密碼"
        android:inputType="phone"
        android:password="true"/>



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/bt_ok"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="確定" 
            android:background="@drawable/btn_selector"/>

        <Button
            android:id="@+id/bt_cancel"
            android:layout_width="0dp"
            android:layout_height="wrap_content" 
            android:layout_weight="1"
            android:text="取消"
            android:background="@drawable/btn_selector"/>
    </LinearLayout>

</LinearLayout>

MainActivity.java

/**
 * 已經設置過密碼
 */
private void setEnterUpPwd() {
     AlertDialog.Builder builder = new Builder(MainActivity.this);
        View dialog_view = View.inflate(MainActivity.this, R.layout.dialog_enter_pwd_main, null);
        et_pwd = (EditText) dialog_view.findViewById(R.id.et_pwd);


        Button bt_ok = (Button) dialog_view.findViewById(R.id.bt_ok);
        Button bt_cancel = (Button) dialog_view.findViewById(R.id.bt_cancel);

        bt_ok.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                //獲取密碼裏面的值。然後判斷2次輸入的值是否一樣
                String et_password = et_pwd.getText().toString().trim();


                if(TextUtils.isEmpty(et_password) ){
                    return ;
                }
                String pwd = sp.getString("pwd", "");

                //如果sp裏面緩存的密碼和輸入的密碼一樣的話。那麼就進入防盜的引導界面
                if(et_password.equals(pwd)){
                    Intent intent = new Intent(MainActivity.this,GuideActivity1.class);
                    startActivity(intent);
                    finish();
                }else{
                    Toast.makeText(MainActivity.this, "2次密碼不一致", 0).show();
                }

            }
        });
        bt_cancel.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                dialog.dismiss();

            }
        });
       builder.setView(dialog_view);


        dialog = builder.show();

}

繼續設置引導界面（有四個，新建4個引導界面：GuideActivity1、GuideActivity2、GuideActivity3、GuideActivity4）配清單文件

<application
    android:allowBackup="true"
    android:icon="@drawable/main_icon"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.itheima.mobile47.SplashActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.itheima.mobile47.MainActivity"
        android:screenOrientation="portrait" >
    </activity>
    <activity
        android:name="com.itheima.mobile47.GuideActivity1"
        android:screenOrientation="portrait" >
    </activity>
    <activity
        android:name="com.itheima.mobile47.GuideActivity2"
        android:screenOrientation="portrait" >
    </activity>
    <activity
        android:name="com.itheima.mobile47.GuideActivity3"
        android:screenOrientation="portrait" >
    </activity>
    <activity
        android:name="com.itheima.mobile47.GuideActivity4"
        android:screenOrientation="portrait" >
    </activity>
</application>

修改小bug，手機返回鍵點擊會使界面一直停留在開機界面

取消返回鍵：builder.setCancelable(false);//但這樣用戶體驗不好，所以取消這種方法

我們採用另外一種方式，使用監聽器來監聽返回鍵，但點擊返回鍵也可以跳到主界面（bug修好）把開機的setMessage改成json傳來的描述信息，這樣可以不讓軟件寫死

MainActivity.class

private Handler handler = new Handler() {
        public void handleMessage(android.os.Message msg) {

            switch (msg.what) {
            case SHOW_DIALOG:

                AlertDialog.Builder builder = new Builder(SplashActivity.this);
                builder.setTitle("有新版本");
                builder.setMessage(desc);
                //屏蔽後退按鈕
//              builder.setCancelable(false);
                builder.setOnCancelListener(new OnCancelListener() {

                    @Override
                    public void onCancel(DialogInterface dialog) {
                        mainUI();

                    }
                });

技巧總結

技巧回顧

如何使用提示框來彈出已經提前準備好了的佈局xml文件這是已經準備好的xml文件：dialogsetuppwd_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#88007573"
        android:gravity="center"
        android:text="請輸入防盜密碼"
        android:textColor="#000"
        android:textSize="24sp" />

    <EditText
        android:id="@+id/et_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="請輸入密碼"
        android:inputType="phone"
        android:password="true" />

     <EditText
        android:id="@+id/et_queren"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:hint="請確認密碼"
        android:inputType="phone"
        android:password="true"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/bt_ok"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/btn_selector"
            android:text="確定" />

        <Button
            android:id="@+id/bt_cancel"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/btn_selector"
            android:text="取消" />
    </LinearLayout>

</LinearLayout>

MainActivity.class

/**
 * 第一次進來的時候。如果沒有設置密碼。請設置密碼界面
 */
private void setSetupPwd() {
    AlertDialog.Builder builder = new Builder(MainActivity.this);
    View dialog_view = View.inflate(MainActivity.this, R.layout.dialog_setup_pwd_main, null);
    //在這裏爲佈局文件裏的控件添加邏輯
    builder.setView(dialog_view);
    dialog = builder.show();

}

style風格的使用

activitylistview_contact.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        style="@style/textview_title_style"
        android:gravity="center"
        android:text="選擇聯繫人" />

    <include layout="@layout/list_view" />

</LinearLayout>

styles.xml

<!--      <TextView -->
<!--         android:layout_width="match_parent" -->
<!--         android:layout_height="40dp" -->
<!--         android:background="#4400ff00" -->
<!--         android:text="歡迎使用手機防盜" -->
<!--         android:textSize="24sp" /> -->


    <style name="textview_title_style">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">40dp</item>
         <item name="android:background">#4400ff00</item>
         <item name="android:textSize">24sp</item>
    </style>

資料下載

手機衛士-01

手機衛士-01

課1

課2

課3

課4

課5

課6

課7

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24-5-18 X

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極客學院Android之2048遊戲開發全過程

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https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

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