为什么我的应用程序有时在早期启动时出错？

我有一些问题。有时当我尝试运行我的应用程序时，它会被迫关闭。我不知道为什么会发生。这里是我的源代码。为什么我的应用程序有时在早期启动时出错？

AlertDialog.Builder alert = new AlertDialog.Builder(this); 
     alert.setCancelable(false); 
     //AlertDialog.Builder alert = new AlertDialog.Builder(this); 
     ..... 
     alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int whichButton) { 
       no_pasien = no_pas.getText().toString(); 
       new LoginProses().execute(); 
       ..... 
     alert.show(); 

class LoginProses extends AsyncTask<String, String, String> { 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     ...... 
    } 

    protected String doInBackground(String... args) { 
     List<NameValuePair> params = new ArrayList<NameValuePair>(); 
     params.add(new BasicNameValuePair("no_pasien", no)); 

     JSONObject json = jsonParser.makeHttpRequest(url_login, 
       "POST", params); 
     try { 
      int success = json.getInt(TAG_SUCCESS); 

      if (success == 1) { 
       // successfully created product 
       pasien = json.getJSONArray("pasien"); 
       JSONObject c = pasien.getJSONObject(0); 
       int id = c.getInt("id"); 

       new Temporary().setIdPasien(id); 

       Intent goMainAct = new Intent(); 
//     goMainAct.putExtra("id", id); 
       goMainAct.setClass(Login.this, MainActivity.class); 
       finish(); 
       startActivity(goMainAct); 
      } else { 
       // failed to create product 
       Intent getReload = getIntent(); 
       getReload.putExtra("status", 1); 
       finish(); 
       startActivity(getReload); 
      } 

     } catch (JSONException e) { 
      if(pDialog.isShowing()){ pDialog.dismiss(); } 
     } 

     return null; 
    } 
    protected void onPostExecute(String file_url) { 
     // dismiss the dialog once done 
     pDialog.dismiss(); 
    } 
}

这里是我的问题的日志错误：

//HERE IS THE LOG: 
06-25 22:57:23.836: E/WindowManager(7630): Activity com.iteadstudio.Login has leaked window [email protected] that was originally added here 
06-25 22:57:23.836: E/WindowManager(7630): android.view.WindowLeaked: Activity com.iteadstudio.Login has leaked window  [email protected] that was originally added here 
06-25 22:57:23.836: E/WindowManager(7630): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:344) 
06-25 22:57:23.836: E/WindowManager(7630): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:267) 
06-25 22:57:23.836: E/WindowManager(7630): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215) 
06-25 22:57:23.836: E/WindowManager(7630): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140) 
06-25 22:57:23.836: E/WindowManager(7630): at android.view.Window$LocalWindowManager.addView(Window.java:537) 
06-25 22:57:23.836: E/WindowManager(7630): at android.app.Dialog.show(Dialog.java:278) 
06-25 22:57:23.836: E/WindowManager(7630): at com.iteadstudio.Login$LoginProses.onPreExecute(Login.java:122) 
06-25 22:57:23.836: E/WindowManager(7630): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:561) 
06-25 22:57:23.836: E/WindowManager(7630): at android.os.AsyncTask.execute(AsyncTask.java:511) 
06-25 22:57:23.836: E/WindowManager(7630): at com.iteadstudio.Login$3.onClick(Login.java:95) 
06-25 22:57:23.836: E/WindowManager(7630): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:166) 
06-25 22:57:23.836: E/WindowManager(7630): at android.os.Handler.dispatchMessage(Handler.java:99) 
06-25 22:57:23.836: E/WindowManager(7630): at android.os.Looper.loop(Looper.java:137) 
06-25 22:57:23.836: E/WindowManager(7630): at android.app.ActivityThread.main(ActivityThread.java:4441) 
06-25 22:57:23.836: E/WindowManager(7630): at java.lang.reflect.Method.invokeNative(Native Method) 
06-25 22:57:23.836: E/WindowManager(7630): at java.lang.reflect.Method.invoke(Method.java:511) 
06-25 22:57:23.836: E/WindowManager(7630): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823) 
06-25 22:57:23.836: E/WindowManager(7630): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590) 
06-25 22:57:23.836: E/WindowManager(7630): at dalvik.system.NativeStart.main(Native Method) 
06-25 22:57:23.946: D/dalvikvm(7630): GC_CONCURRENT freed 782K, 6% free 14319K/15203K, paused 4ms+3ms 
06-25 22:57:23.976: D/AndroidRuntime(7630): Shutting down VM 
06-25 22:57:23.976: W/dalvikvm(7630): threadid=1: thread exiting with uncaught exception  (group=0x40ab4210) 
06-25 22:57:23.986: E/AndroidRuntime(7630): FATAL EXCEPTION: main 
06-25 22:57:23.986: E/AndroidRuntime(7630): java.lang.IllegalArgumentException: View not attached to window manager 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:587) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:324) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.view.WindowManagerImpl$CompatModeWrapper.removeView(WindowManagerImpl.java:151) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.app.Dialog.dismissDialog(Dialog.java:321) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.app.Dialog$1.run(Dialog.java:119) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.app.Dialog.dismiss(Dialog.java:306) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at com.iteadstudio.Login$LoginProses.onPostExecute(Login.java:177) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at com.iteadstudio.Login$LoginProses.onPostExecute(Login.java:1) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.os.AsyncTask.finish(AsyncTask.java:602) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.os.AsyncTask.access$600(AsyncTask.java:156) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.os.Handler.dispatchMessage(Handler.java:99) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.os.Looper.loop(Looper.java:137) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at android.app.ActivityThread.main(ActivityThread.java:4441) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at java.lang.reflect.Method.invokeNative(Native Method) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at java.lang.reflect.Method.invoke(Method.java:511) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590) 
06-25 22:57:23.986: E/AndroidRuntime(7630):  at dalvik.system.NativeStart.main(Native Method)

来源

2013-06-25 Hendra

是这段代码在你的onCreate？ –

检查这[问题]（http://stackoverflow.com/questions/2850573/activity-has-leaked-window-that-was-originally-added） –

@ Mr.Me关于警报生成器是的。 – Hendra

你可能会得到JSONException

catch (JSONException e) { 
     if(pDialog.isShowing()){ pDialog.dismiss(); }

解雇的对话，你不能在onPostExecute再次驳回。

来源

2013-06-25 16:27:01 Gustek

所以在onPostExecute我必须添加相同的代码？我的意思是像 if（pDialog.isShowing（））{pDialog.dismiss（）; } – Hendra

PostExecute将总是被调用，所以它只是在那里，catch块应该用来处理异常，例如通知用户有问题。 – Gustek

看起来您正试图在您的活动处于前景中之前显示一个对话框。确保您的活动位于前台后显示对话框。您可以尝试在mainActivity的onResume（）之后启动asyncTask。

来源

2013-06-25 17:35:30 deepdroid

我如何知道或确定该对话框处于前景？ – Hendra

您正在将alertDialog附加到您的活动，并且该活动不在foreground，直到OnResume被调用。由于您在onCreate（）中启动了asyncTask，因此它会尝试在尚未附加窗口的窗口上显示alertDialog。 – deepdroid

所以，我需要移动onResume（）中的警报对话框？ – Hendra

的问题是，你要附加到一个窗口，还没有准备好，将你的警告对话框代码添加到您的onResume功能，你应该罚款

@Override 
protected void onResume(){ 
     super.onResume(); 
     AlertDialog.Builder alert = new AlertDialog.Builder(this); 
     alert.setCancelable(false); 
     ..... 
     alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int whichButton) { 
      no_pasien = no_pas.getText().toString(); 
      new LoginProses().execute(); 
      ..... 
     alert.show(); 
}

来源

2013-06-26 07:55:51

为什么我的应用程序有时在早期启动时出错？

回答

相关问题