android更新問題

Android更新問題

• 問題描述：
  在Android更新包下載成功後，安裝替換取消，如果取消了，再次運行後
  dialog彈出的context丟失，出現以下錯誤：

06-02 15:53:05.010: E/CrashHandler(23076): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@42e6c540 is not valid; is your activity running?
06-02 15:53:05.010: E/CrashHandler(23076):  at android.view.ViewRootImpl.setView(ViewRootImpl.java:637)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:261)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.app.Dialog.show(Dialog.java:290)
06-02 15:53:05.010: E/CrashHandler(23076):  at com.deppon.express.common.dialog.CustomProgressDialog.show(CustomProgressDialog.java:173)
06-02 15:53:05.010: E/CrashHandler(23076):  at com.deppon.express.login.update.service.SmartPgmVerUpdateManager$1.checkUpdateCompleted(SmartPgmVerUpdateManager.java:964)
06-02 15:53:05.010: E/CrashHandler(23076):  at com.deppon.express.login.update.service.SmartPgmVerUpdateManager$2.handleMessage(SmartPgmVerUpdateManager.java:215)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.os.Handler.dispatchMessage(Handler.java:110)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.os.Looper.loop(Looper.java:193)
06-02 15:53:05.010: E/CrashHandler(23076):  at android.app.ActivityThread.main(ActivityThread.java:5292)
06-02 15:53:05.010: E/CrashHandler(23076):  at java.lang.reflect.Method.invokeNative(Native Method)
06-02 15:53:05.010: E/CrashHandler(23076):  at java.lang.reflect.Method.invoke(Method.java:515)
06-02 15:53:05.010: E/CrashHandler(23076):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
06-02 15:53:05.010: E/CrashHandler(23076):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
06-02 15:53:05.010: E/CrashHandler(23076):  at dalvik.system.NativeStart.main(Native Method)

• 原因
  再次啓動後的dialog依然持有上次啓動的Activity的Context，而上次Activity的Context會被銷燬，所以造成dialog的Context丟失，出現以上問題

• 解決辦法

  在進行更新安裝時，把本次啓動的舊版本應用kill掉，完美解決
  代碼如下：

Intent i = new Intent(Intent.ACTION_VIEW);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.setDataAndType(Uri.parse("file://" + filePath),
                "application/vnd.android.package-archive");
activity.startActivity(i);
//下面這句是關鍵
android.os.Process.killProcess(android.os.Process.myPid());