无法调用onActivityResult方法

Question

嗨，我不能在下面的代码后调用方法onActivityResult。

private void ImageChooseOptionDialog() { 

    Log.i(TAG, "Inside ImageChooseOptionDialog"); 
    String[] photooptionarray = new String[] { "Take a photo", 
      "Choose Existing Photo" }; 

    Builder alertDialog = new AlertDialog.Builder(TabSample.tabcontext) 
      .setItems(photooptionarray, 
        new DialogInterface.OnClickListener() { 
         @Override 
         public void onClick(DialogInterface dialog, 
           int which) { 
          if (which == 0) { 
           Log.i(TAG, "Which" + which); 
           Log.i(TAG, 
             "Inside ImageChooseOptionDialog Camera"); 
           _path = Environment 
             .getExternalStorageDirectory() 
             + File.separator 
             + "TakenFromCamera.png"; 

           Log.d(TAG, "----- path ----- " + _path); 
           media = _path; 
           // File file = new File(_path); 
           // Uri outputFileUri = Uri.fromFile(file); 
           // Intent intent = new Intent(
           // android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
           // intent.putExtra(MediaStore.EXTRA_OUTPUT, 
           // outputFileUri); 
           // startActivityForResult(intent, 1212); 

          } else if (which == 1) { 
           Log.i(TAG, "Which" + which); 
           Log.i(TAG, 
             "Inside ImageChooseOptionDialog Gallary"); 
           // Intent intent = new Intent(); 
           // intent.setType("image/*"); 
           // intent.setAction(Intent.ACTION_GET_CONTENT); 
           // startActivityForResult(Intent 
           // .createChooser(intent, 
           // "Select Picture"), 1); 

           Intent intent = new Intent(
             Intent.ACTION_GET_CONTENT); 
           intent.setType("image/*"); 
           // intent.setAction(Intent.ACTION_GET_CONTENT); 
           startActivityForResult(Intent 
             .createChooser(intent, 
               "Select Picture"), 1); 

           Log.i(TAG, "end" + which); 

          } 
         } 
        }); 
    alertDialog.setNeutralButton("Cancel", 
      new DialogInterface.OnClickListener() { 
       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        dialog.dismiss(); 
       } 
      }); 
    alertDialog.create().show(); 
} 

，这是我的onActivityResult方法：

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    Log.i(TAG, "Inside Onactivity Result"); 
    if (resultCode == RESULT_OK) { 
     if (requestCode == 1) { 
      Log.i(TAG, "Inside if else Onactivity Result"); 
      // currImageURI is the global variable I’m using to hold the 
      // content:// URI of the image 
      Uri currImageURI = data.getData(); 
      String path = getRealPathFromURI(currImageURI); 
      Log.i(TAG, "Inside Onactivity Result Image path" + path); 

     } 
    } 
} 

请让我知道我在哪里做错了。我打电话onActivityResult方法从对话框出现后= 1。 但在logcat中没有获取任何内部onActivityResult方法的日志。

Answer 1

这是因为，您可能没有获得RESULT_OK。总是先检查请求代码，然后检查结果代码。如果您检索从库图像，请尝试以下内onActivityResult（）代码：

if (requestCode == TAKE_PICTURE_GALLERY) { 
      if (resultCode == RESULT_OK) { 

       final Uri selectedImage = data.getData(); 
       final String[] filePathColumn = { MediaStore.Images.Media.DATA }; 

       final Cursor cursor = getContentResolver().query(selectedImage, 
         filePathColumn, null, null, null); 
       cursor.moveToFirst(); 

       final int columnIndex = cursor 
         .getColumnIndex(filePathColumn[0]); 
       final String filePath = cursor.getString(columnIndex); 
       cursor.close(); 
      } 
} 

而且无论你想使用的文件路径。 我希望这可以解决您的问题。谢谢:)

UPDATE： 使用此代码，开始您的画廊活动：

imagePathURI = Uri.fromFile(new File(<your image path>)); 
     final Intent intent = new Intent(Intent.ACTION_PICK, imagePathURI); 
       intent.setType("image/*"); 
       intent.putExtra(MediaStore.EXTRA_OUTPUT, imagePathURI); 
       startActivityForResult(intent, TAKE_PICTURE_GALLERY); 

当你想要从画廊形象，MediaStore.EXTRA_OUTPUT指Intent-的名称额外用于指示内容解析器Uri用于存储请求的图像或视频。所以在这里，你必须通过图像路径，你会收到你的图像。 imagePathURI = Uri.fromFile(new File(<your image path>)); //这里将从您的图像路径创建一个文件。当你收到图像时，你可以从这个图像路径访问图像。