這只是初步的實現,並沒有加入自動編譯等功能。需要手動更改更新的xml文件和最新的apk。
共涉及到四個文件!
一、客戶端
AndroidUpdateTestActivity.cs:程序首頁
main.xml:首頁佈局
Update.cs:更新類
softupdate_progress:更新等待界面
Updage.cs
package majier.test;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
public class Update {
private static final int DOWNLOAD = 1;
private static final int DOWNLOAD_FINISH = 2;
private static final int CONNECT_FAILED = 0;
private static final int CONNECT_SUCCESS = 1;
HashMap<String, String> mHashMap;
private String mSavePath;
private int progress;
private boolean cancelUpdate = false;
private Context mContext;
private ProgressBar mProgress;
private Dialog mDownloadDialog;
private String mXmlPath; // 服務器更新xml存放地址
public Update(Context context, String xmlPath, String savePath) {
this.mContext = context;
this.mXmlPath = xmlPath;
this.mSavePath = savePath;
}
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case DOWNLOAD:
mProgress.setProgress(progress);
break;
case DOWNLOAD_FINISH:
installApk();
break;
default:
break;
}
};
};
/**
* 檢查更新
*/
public void checkUpdate() {
new Thread(new Runnable() {
@Override
public void run() {
try {
URL url = new URL(mXmlPath);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setConnectTimeout(5000);
InputStream inStream = conn.getInputStream();
mHashMap = parseXml(inStream);
Message msg = new Message();
msg.what = CONNECT_SUCCESS;
handler.sendMessage(msg);
} catch (Exception e) {
Message msg = new Message();
msg.what = CONNECT_FAILED;
handler.sendMessage(msg);
}
}
}).run();
}
/**
* 訪問服務器更新XML
*/
Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case CONNECT_FAILED:
Toast.makeText(mContext, "訪問服務器失敗!", Toast.LENGTH_SHORT).show();
break;
case CONNECT_SUCCESS:
if (null != mHashMap) {
int serviceCode = Integer.valueOf(mHashMap.get("version"));
if (serviceCode > getVersionCode(mContext)) {
showNoticeDialog();
}
}
break;
}
}
};
/**
* 獲取程序版本號
*/
private int getVersionCode(Context context) {
int versionCode = 0;
try {
versionCode = context.getPackageManager().getPackageInfo(
mContext.getPackageName(), 0).versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return versionCode;
}
/**
* 是否更新提示窗口
*/
private void showNoticeDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("軟件更新");
builder.setMessage("檢測到新版本,是否更新?");
builder.setPositiveButton("更新",
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
showDownloadDialog();
}
});
builder.setNegativeButton("取消",
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
Dialog noticeDialog = builder.create();
noticeDialog.show();
}
/**
* 下載等待窗口
*/
private void showDownloadDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("正在更新");
final LayoutInflater inflater = LayoutInflater.from(mContext);
View v = inflater.inflate(R.layout.softupdate_progress, null);
mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
builder.setView(v);
builder.setNegativeButton("取消下載",
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
cancelUpdate = true;
}
});
mDownloadDialog = builder.create();
mDownloadDialog.show();
downloadApk();
}
/**
* 涓嬭澆apk鏂囦歡
*/
private void downloadApk() {
new downloadApkThread().start();
}
/**
* 下載程序
*/
private class downloadApkThread extends Thread {
@Override
public void run() {
try {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
URL url = new URL(mHashMap.get("url"));
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.connect();
int length = conn.getContentLength();
InputStream is = conn.getInputStream();
File file = new File(mSavePath);
if (!file.exists()) {
file.mkdir();
}
File apkFile = new File(mSavePath, mHashMap.get("name"));
FileOutputStream fos = new FileOutputStream(apkFile);
int count = 0;
byte buf[] = new byte[1024];
do {
int numread = is.read(buf);
count += numread;
progress = (int) (((float) count / length) * 100);
mHandler.sendEmptyMessage(DOWNLOAD);
if (numread <= 0) {
mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
break;
}
fos.write(buf, 0, numread);
} while (!cancelUpdate);
fos.close();
is.close();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mDownloadDialog.dismiss();
}
};
/**
* 安裝apk
*/
private void installApk() {
File apkfile = new File(mSavePath, mHashMap.get("name"));
if (!apkfile.exists()) {
return;
}
Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file://" + apkfile.toString()),
"application/vnd.android.package-archive");
mContext.startActivity(i);
}
private HashMap<String, String> parseXml(InputStream inStream)
throws Exception {
HashMap<String, String> hashMap = new HashMap<String, String>();
// 實例化一個文檔構建器工廠
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
// 通過文檔構建器工廠獲取一個文檔構建器
DocumentBuilder builder = factory.newDocumentBuilder();
// 通過文檔通過文檔構建器構建一個文檔實例
Document document = builder.parse(inStream);
// 獲取XML文件根節點
Element root = document.getDocumentElement();
// 獲得所有子節點
NodeList childNodes = root.getChildNodes();
for (int j = 0; j < childNodes.getLength(); j++) {
// 遍歷子節點
Node childNode = (Node) childNodes.item(j);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
Element childElement = (Element) childNode;
// 版本號
if ("version".equals(childElement.getNodeName())) {
hashMap.put("version", childElement.getFirstChild()
.getNodeValue());
}
// 軟件名稱
else if (("name".equals(childElement.getNodeName()))) {
hashMap.put("name", childElement.getFirstChild()
.getNodeValue());
}
// 下載地址
else if (("url".equals(childElement.getNodeName()))) {
hashMap.put("url", childElement.getFirstChild()
.getNodeValue());
}
}
}
return hashMap;
}
}
AndroidUpdateTestActivity.cs
package majier.test;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
public class AndroidUpdateTestActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
update();
}
private void update() {
String sdpath = Environment.getExternalStorageDirectory() + "/";
String mSavePath = sdpath + "boiler/";
Update updateManager = new Update(this,
"http://localhost:8011/abcd.xml", mSavePath);
updateManager.checkUpdate();
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
</LinearLayout>
softupdate_progress.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ProgressBar
android:id="@+id/update_progress"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleHorizontal" />
</LinearLayout>
每次生成新的apk前,需要修改系統的版本號。
修改version code 和version name。上面的代碼可以看出,系統是根據version code來判斷是否需要更新的。version name作爲一個版本名稱
這裏我建議version code從10開始,這樣方面名稱修改(1.1、1.2)。
修改完成後,生成系統。然後將apk文件放在服務端的文件下。
二、服務端
服務端主要是建立一個網址供用戶下載apk。在IIS上新建網站
http://localhost:8011/。將更新文件和更新的xml放在目錄下。
version.xml格式
<update>
<version>12</version>
<name>BoilerAndroid_1.1</name>
<url>http://192.168.0.33:8011/boilerandroid.apk</url>
</update>
version對應着新程序的version code;
name隨便起名;
url對應apk的下載路徑。
在這裏有可能會遇見一個問題,訪問url路徑時IIS報錯。主要是因爲IIS並不認識apk,不知道如何處理。
這裏我們在IIS中新增安卓程序的MIME類型,來使apk支持下載。
在“IIS管理器”中查看所建立的網站——MIME類型——添加。
文件擴展名:.apk
MIME類型:application/vnd.android.package-archive
這樣就可以下載了。
目前只是一個簡單的自動更新程序。我們可以看出,其中版本號需要自己填寫,而且要與xml中的對應,apk需要生成後放在更新網址下。
這麼的人爲操作,很容易造成失誤。因此,接下來我們要研究下自動發佈更新版本,並且版本號與svn對應,在提交svn後,自動改變程序的版本號。