如何在 onActivityResult 中调用 startActivityForResult？

Posted 2023-02-19

【中文标题】如何在 onActivityResult 中调用 startActivityForResult？

【英文标题】：How to call startActivityForResult inside onActivityResult?

【发布时间】：2012-08-27 05:45:02

【问题描述】：

打电话给startActivityForResult 给我ActivityNotFoundException。我想知道是否可以在onActivityResult 中调用startActivityForResult？如果是，那么我的代码可能有什么问题：

代码如下：

OnPreferenceClickListener selectListener = new OnPreferenceClickListener() 

        public boolean onPreferenceClick(Preference preference) 
            Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
            photoPickerIntent.setType("image/*");
            photoPickerIntent.putExtra("crop","true");
            startActivityForResult(photoPickerIntent, 123);
            return false;
        

    ;

    protected void onActivityResult(int requestCode, int resultCode, Intent resultIntent)  
        super.onActivityResult(requestCode, resultCode, resultIntent);

        if(requestCode == 123)
            if(resultCode == RESULT_OK)
                Uri selectedImage = resultIntent.getData(); // uri from user selection.
                File tempFile; // temporary File
                Uri tempUri; // temporary Uri

                try 
                    // initializing File
                    tempFile = File.createTempFile("crop", ".png", Environment.getExternalStorageDirectory());
                 catch (IOException e1) 
                    tempFile = null;
                

                if(tempFile != null)
                    // initializing Uri
                tempUri = Uri.fromFile(tempFile);   
                else
                    tempUri = selectedImage;
                

                Display display = getWindowManager().getDefaultDisplay(); 
                int width = display.getWidth();
                int height = display.getHeight();

                // creating new crop intent
                final Intent cropIntent = new Intent("com.android.camera.action.CROP");
                cropIntent.setData(selectedImage); // original image Uri
                cropIntent.putExtra("outputX", width);
                cropIntent.putExtra("outputY", height);
                cropIntent.putExtra("aspectX", width);
                cropIntent.putExtra("aspectY", height);
                cropIntent.putExtra("scale", true);
                cropIntent.putExtra("noFaceDetection", true);
                cropIntent.putExtra("output", tempUri);  // cropped image Uri
                cropIntent.putExtra("outputFormat", "png");
                startActivityForResult(cropIntent, 456);
            

        if(requestCode == 456)
            if(resultCode == RESULT_OK)
                System.out.println("inside request code 456");
            
        

【参考方案1】：

我已经通过删除photoPickerIntent.putExtra("crop","true");解决了这个错误。