android - StartActivityForResult 未将数据返回给父 Activity

Question

有三个 Activity A、B、C，在 Activity A 中一个 Intent 打开 Activity B。在 Activity B 上调用 startActivityForResult 并打开 C。但是在 C 中调用 setResult 之后，它返回到 Activity A 而不是 B我正在复制我的 Activity 代码，我正在调用开始 Activity 创建事件

     @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == SELECT_FILE) {
        if (resultCode == Activity.RESULT_OK) {

            alertDialogBox.dismiss();
            Intent image = new Intent(CreateEventActivity.this, CropImageActivity.class);
            image.putExtra("data", data.getData().toString());
            startActivityForResult(image, 2);

        }

    }
    if (requestCode == 2) {
        if (resultCode == Activity.RESULT_OK) {
            String bt = data.getStringExtra("result");
            file_path = data.getStringExtra("filepath");
            testPath = new File(file_path);
            Log.e("desti", testPath.toString());
            Log.e("destpat", testPath.getAbsolutePath());
            try {
                testPath.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }

            try {
                byte[] encodeByte = Base64.decode(bt, Base64.DEFAULT);
                bitmap2 = BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);

                //  imageforUpload = getStringImage(bitmap2);
                BitmapFactory.Options options = new BitmapFactory.Options();

                // down sizing image as it throws OutOfMemory Exception for larger
                // images
                options.inSampleSize = 8;

                final Bitmap bitmaptest = BitmapFactory.decodeFile(file_path, options);

                imgCropped.setVisibility(View.VISIBLE);
                imgCropped.setImageBitmap(bitmaptest);


            } catch (Exception e) {
                e.getMessage();

            }
        }
    }
}

第二个 Activity cropActivity，我将数据返回给父级

     private final CropCallback mCropCallback = new CropCallback() {
    @Override
    public void onSuccess(Bitmap cropped) {
        int height = cropped.getHeight();
        int width = cropped.getWidth();
        if (height<400||width<400){
            Toast.makeText(getApplicationContext(),"this image cat be cropped",Toast.LENGTH_SHORT).show();
        }else {

            Bitmap bitmap = Bitmap.createBitmap(cropped, 0, 0, 400, 400);


            imgtest.setImageBitmap(bitmap);
            SaveImage(bitmap);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
            byte[] b = baos.toByteArray();
            String temp = Base64.encodeToString(b, Base64.DEFAULT);


            Intent returnIntent = new Intent();
            returnIntent.putExtra("result", temp);
            returnIntent.putExtra("filepath", filePath);
            setResult(Activity.RESULT_OK, returnIntent);
            finish();
        }
    }

请帮我解决这个问题，返回页面是另一个 Activity

Answer 1

希望你必须更正你的requestCode

Intent returnIntent = new Intent();
returnIntent.putExtra("result", temp);
returnIntent.putExtra("filepath", filePath);
setResult(2, returnIntent);
finish();

因为你在这里提到了同样的

Intent image = new Intent(CreateEventActivity.this, CropImageActivity.class);
image.putExtra("data", data.getData().toString());
startActivityForResult(image, 2);