1.添加依賴：
compile 'org.xutils:xutils:3.5.0' compile 'com.google.code.gson:gson:2.8.1' 2.初始化xutils
public class BaseApplication extends Application { @Override public void onCreate() { super.onCreate(); x.Ext.init(this); x.Ext.setDebug(BuildConfig.DEBUG); } }
3.定義一個獲取version的工具類：
public class VersionUtils { /** * 獲取應用的版本 */ public static int getVersionCode(Context context) { int versionCode = 0; try { PackageManager packageManager = context.getPackageManager(); String packageName = context.getPackageName(); PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0); versionCode = packageInfo.versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return versionCode; } } 4.Bean類
public class MessageBean<T> { private boolean success; private String message; private T result; public boolean isSuccess() { return success; } public void setSuccess(boolean success) { this.success = success; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public T getResult() { return result; } public void setResult(T result) { this.result = result; } }
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public class Version { @SerializedName("has_new_version") private boolean hasNewVersion; @SerializedName("must_update") private boolean mustUpdate; private String url; public boolean isHasNewVersion() { return hasNewVersion; } public void setHasNewVersion(boolean hasNewVersion) { this.hasNewVersion = hasNewVersion; } public boolean isMustUpdate() { return mustUpdate; } public void setMustUpdate(boolean mustUpdate) { this.mustUpdate = mustUpdate; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } }
5.MainActivity 頁面代碼
public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button check; private String url="http://172.18.47.57/checkversion.php"; private static final String TAG = "MainActivity"; private ProgressDialog progressDialog; // 文件保存地址 private String targetPath = ""; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); x.view().inject(this); check= (Button) findViewById(R.id.btn_check_version); //版本更新的監聽事件 check.setOnClickListener(this); //設置sdcard的根路徑 if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { File file = Environment.getExternalStorageDirectory(); targetPath = file.getAbsolutePath() + File.separator; } progressDialog = new ProgressDialog(this); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); } @Override public void onClick(View v) { //檢查版本號 checkVersion(); } private void checkVersion() { //獲得自己app當前的版本號，用來和服務器的版本進行對比 final int code = VersionUtils.getVersionCode(this); RequestParams params=new RequestParams(url); params.addQueryStringParameter("version",String.valueOf(code)); x.http().get(params, new Callback.CommonCallback<String>() { @Override public void onSuccess(String result) { if (result!=null){ Log.i(TAG, "onSuccess: " + result); Gson gson = new Gson(); Type type = new TypeToken<MessageBean<Version>>() { }.getType(); MessageBean<Version> messageBean = gson.fromJson(result, type); if (messageBean.isSuccess()){ final Version version = messageBean.getResult(); //強制更新 if(version.isMustUpdate()){ //強制更新 new AlertDialog.Builder(MainActivity.this) .setTitle("版本更新") .setMessage("強制更新到最新版本！") .setPositiveButton("確定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { updateVersion(version.getUrl()); dialog.dismiss(); } }) //不可取消 .setCancelable(false) .create().show(); }else if(version.isHasNewVersion()){ //選擇更新 new AlertDialog.Builder(MainActivity.this) .setTitle("版本更新") .setMessage("是否要升級到最新版本") .setPositiveButton("確定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { updateVersion(version.getUrl()); dialog.dismiss(); } }) .setNegativeButton("下次再說", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }) .create().show(); }else{ //無可用更新 Toast.makeText(MainActivity.this, "當前已經是最新版本", Toast.LENGTH_SHORT).show(); } } } } @Override public void onError(Throwable ex, boolean isOnCallback) { } @Override public void onCancelled(CancelledException cex) { } @Override public void onFinished() { } }); } private void updateVersion(String url) { //下載的app文件名：當前時間.apk targetPath = targetPath + System.currentTimeMillis() + ".apk"; RequestParams params = new RequestParams(url); // 設置下載保存路徑 params.setSaveFilePath(targetPath); // xutils的文件下載 x.http().get(params, new Callback.ProgressCallback<File>() { @Override public void onSuccess(File result) { if (progressDialog.isShowing()) { progressDialog.dismiss(); } //自動安裝app的方法 installApk(result); } @Override public void onError(Throwable ex, boolean isOnCallback) { if (progressDialog.isShowing()) { progressDialog.dismiss(); } Toast.makeText(MainActivity.this, "下載失敗", Toast.LENGTH_SHORT).show(); } @Override public void onCancelled(CancelledException cex) { } @Override public void onFinished() { } @Override public void onWaiting() { } @Override public void onStarted() { } @Override public void onLoading(long total, long current, boolean isDownloading) { if (isDownloading) { progressDialog.setMessage("正在下載..."); progressDialog.show(); progressDialog.setMax((int) total); progressDialog.setProgress((int) current); } } }); } private void installApk(File file) { Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); startActivity(intent); android.os.Process.killProcess(android.os.Process.myPid()); } }