Android 4.1上的AlertDialog问题

使用警报对话框时出现一些错误。我使用4.1果冻豆sdk。我想检查用户的互联网连接和gps是否可用。Android 4.1上的AlertDialog问题

错误行：

myAlertDialog = alertDialog.create();

我的控制功能：

public void kontrol(){ 

      LocationManager locManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

      if (locManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){ 

       if(isConn()){ 

       { 
        startActivity(new Intent (MainActivity.this,GPSanasayfa.class)); 
       } 
      } 
       else{ 
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this); 

        alertDialog.setMessage("Uygulamayı kullanabilmek için internet bağlantınızın aktif olması gerekmektedir"); 
        alertDialog.setPositiveButton("Tamam", new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dialog, int which) { 
          System.exit(0); 
         } 
        }); 

        myAlertDialog = alertDialog.create(); //I get error this line 
        myAlertDialog.show(); 
       } 

     } 

      else{ 
        startActivity(new Intent (MainActivity.this,NormalAnasayfa.class)); 
      } 

     }

错误日志：

09-12 09:06:28.685: E/AndroidRuntime(825): FATAL EXCEPTION: Thread-93 
09-12 09:06:28.685: E/AndroidRuntime(825): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() 
09-12 09:06:28.685: E/AndroidRuntime(825): at android.os.Handler.<init>(Handler.java:121) 
09-12 09:06:28.685: E/AndroidRuntime(825): at android.app.Dialog.<init>(Dialog.java:107) 
09-12 09:06:28.685: E/AndroidRuntime(825): at android.app.AlertDialog.<init>(AlertDialog.java:114) 
09-12 09:06:28.685: E/AndroidRuntime(825): at android.app.AlertDialog$Builder.create(AlertDialog.java:913) 
09-12 09:06:28.685: E/AndroidRuntime(825): at com.minor.cepcadisiv3.MainActivity.kontrol(MainActivity.java:55) 
09-12 09:06:28.685: E/AndroidRuntime(825): at com.minor.cepcadisiv3.MainActivity$2.run(MainActivity.java:78) 
09-12 09:06:28.685: E/AndroidRuntime(825): at java.lang.Thread.run(Thread.java:856)

我调用这个函数中的onCreate：

@Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     pdialog = ProgressDialog.show(MainActivity.this, "Kontrol Ediliyor...", "İnternet ve GPS erişiminiz kontrol ediliyor.",true); 

     new Thread(new Runnable() { 
      public void run() { 
       try { 
        Thread.sleep(2000); 
        kontrol(); 
        pdialog.dismiss(); 
       } catch (InterruptedException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 

       return; 
      } 
     }).start(); 

}

来源

2012-09-12 Melih Mucuk

什么是错误的代码？发布它 –

请参阅本文http://stackoverflow.com/questions/5810084/android-alertdialog-single-button –

我添加了错误日志 –

我解决了这样的问题。

public Activity activity = MainActivity.this;

，这里是功能

activity.runOnUiThread(new Runnable() { 
        public void run() { 
         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); 
       builder.setMessage("Uygulamayı kullanabilmek için internet bağlantınızın aktif olması gerekmektedir") 
         .setCancelable(false) 
         .setPositiveButton("Tamam", new DialogInterface.OnClickListener() { 
          public void onClick(DialogInterface dialog, int id) { 
           System.exit(0); 
          } 
         }); 
       AlertDialog alert = builder.create(); 
       alert.show(); 
        } 
       });

来源

2012-09-12 11:13:58

试试这个......

AlertDialog myAlertDialog = new AlertDialog.Builder(MainActivity.this).create(); 
alertDialog.setMessage("Uygulamayı kullanabilmek için internet bağlantınızın aktif olması gerekmektedir"); 
alertDialog.setPositiveButton("Tamam", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog, int which) { 
     System.exit(0); 
    } 
}); 

myAlertDialog.show();

来源

2012-09-12 09:27:09 Talha

没有任何改变。 –

Android 4.1上的AlertDialog问题

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