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我得到了以下代码,我需要知道“返回数据”的含义。我找不到任何这些参数的文档

编辑:我正在从股票 android 库中检索图像

Intent photoPickerIntent = new Intent(Intent.ACTION_PICK,
    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    photoPickerIntent.setType("image/*");
    photoPickerIntent.putExtra("aspectX", 2);
    photoPickerIntent.putExtra("aspectY", 1);
    photoPickerIntent.putExtra("scale", true);
    photoPickerIntent.putExtra("crop", "true");
    photoPickerIntent.putExtra("outputX", 600);
    photoPickerIntent.putExtra("outputY", 300);
    photoPickerIntent.putExtra("return-data", true);
    photoPickerIntent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());
    photoPickerIntent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
    startActivityForResult(photoPickerIntent, 100);
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