showDialog按鈕doesent調用方法我告訴他

Question

好吧我有活動，doesent有他的佈局，它只是在那裏採取GPS座標，如果他成功，然後默認相機意圖開始，如果不是我顯示他對話，用戶有2按鈕一個取消並返回到開始活動，第二個是嘗試再次獲取圖片（調用方法獲取gps，然後發送到相機意圖）。

的問題是，有時當我打重試按鈕，它doesent調用Getpicture中（）methond只是繼續像按鈕從來沒有打，也沒有顯示出對話框，這個問題經常發生

這裏是我的代碼：

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    getPicture(); 
} 

public void getPicture(){ 



    LocationManager locationManager = null; 

    locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 
    locationListener = new MyLocationListener(); 

    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener); 

    if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){ 
     if(MyLocationListener.latitude>0){ 
      Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 

      startActivityForResult(cameraIntent, CAMERA_REQUEST); 


     } else { 

      showDialog(GPS_CANT_CONNECT); 
     } 
    }else{ 

     showDialog(GPS_OFF); 
    } 
} 

@Override 
protected Dialog onCreateDialog(int id) { 
     Dialog d = null; 
     switch (id){ 

     case GPS_OFF: { 
      AlertDialog.Builder builder = new AlertDialog.Builder(this); 
      builder.setTitle("Please turn on your GPS before taking picture"); 
      builder.setNeutralButton("Try Again", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        getPicture(); 
       } 
      }); 
      builder.setNegativeButton("Cancel", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        Intent intent = new Intent(StartCameraActivity.this, MainActivity.class); 
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        startActivity(intent); 

       } 
      }); 
      d = builder.create(); 
      break; 
     } 
     case GPS_CANT_CONNECT: { 
      AlertDialog.Builder builder = new AlertDialog.Builder(this); 
      builder.setTitle("GPS cant get coordinates! Please make sure that you are outside"); 
      builder.setNeutralButton("Try Again", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        getPicture(); 
       } 
      }); 
      builder.setNegativeButton("Cancel", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        Intent intent = new Intent(StartCameraActivity.this, MainActivity.class); 
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        startActivity(intent); 

       } 
      }); 

      d = builder.create(); 
      break; 
     } 

      return d; 
} 

Answer 1

只需添加：

d.show(); 

每d = builder.create();行之後。

因爲你只有創建對話框不顯示這就是爲什麼它沒有顯示。

喜歡：

case GPS_CANT_CONNECT: { 
      AlertDialog.Builder builder = new AlertDialog.Builder(this); 
      builder.setTitle("GPS cant get coordinates! Please make sure that you are outside"); 
      builder.setNeutralButton("Try Again", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        getPicture(); 
       } 
      }); 
      builder.setNegativeButton("Cancel", new OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        Intent intent = new Intent(StartCameraActivity.this, MainActivity.class); 
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        startActivity(intent); 

       } 
      }); 

      d = builder.create(); 
      d.show(); 
      break; 
     }