无法在片段中的 onActivityResult 更新视图

Question

我有一个片段，我在 onActivityResult 从我的自定义画廊获取图像数据然后我需要更新我的 TextView 和 ImageView 在 onActivityResult 调用.我从 Whosebug 和 GitHub 尝试了几种方法，但 none 对我有用。我在日志中检查了我使用这样的路径成功获取图像 /storage/emulated/0/DCIM/Camera/IMG_20190430_221429.jpg 我还检查了它是否有效。

上传图片片段

public class UploadImage_Fragment extends Fragment implements View.OnClickListener {
    public static final String TAG="###Upload Image###";
    TextView uploadText;
    ImageView uploadImage;
    Button uploadButton;
    App_Functions functions;
    String cmpImage,Base64Image;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View v=inflater.inflate(R.layout.upload_profile_cover_registration,container,false);

        uploadText = v.findViewById(R.id.textViewImageUpload);
        uploadImage = v.findViewById(R.id.uploadImage);
        uploadButton = v.findViewById(R.id.uploadButton);

        uploadButton.setEnabled(false);

        Glide.with(getActivity()).load(R.drawable.cam_icon).into(uploadImage);

        uploadImage.setOnClickListener(this);
        uploadButton.setOnClickListener(this);

        setHasOptionsMenu(true);
        return v;
    }

    @Override
    public void onClick(View view) {
        int clickID=view.getId();
        switch (clickID){
            case R.id.uploadImage:
                Media_Gallery gallery = new Media_Gallery();
                gallery.setTargetFragment(this,101);
                FragmentTransaction fragmentTrasaction=getFragmentManager().beginTransaction();
                fragmentTrasaction.addToBackStack("Chat");
                fragmentTrasaction.replace(R.id.FragmentLoginRegistration,gallery,"Chat");
                fragmentTrasaction.commit();

                break;
            case R.id.uploadButton:
                if (uploadButton.isEnabled()){
                    Log.d(TAG,"Button Is Enable Upload Image Here");
                    uploadButton.setEnabled(false);
                }else {
                    Toast.makeText(getActivity(), "Select Image To Upload", Toast.LENGTH_SHORT).show();
                }
                break;

        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        functions=new App_Functions(getActivity());
        if (requestCode==301 && resultCode== Activity.RESULT_OK){
            Uri uri = data.getData();

            cmpImage = functions.compressImage(uri,true);
            Glide.with(getActivity()).load(cmpImage).apply(RequestOptions.circleCropTransform()).into(uploadImage);
            uploadButton.setEnabled(true);
            Log.d(TAG,"Image "+uri+" Compress Image "+cmpImage);
            Bitmap bitmap = BitmapFactory.decodeFile(cmpImage);
            Base64Image=functions.Convert_To_Base64(bitmap);

        }else if (requestCode == 101 && resultCode == Activity.RESULT_OK){
            ArrayList<String> imagePath = data.getStringArrayListExtra("Profile");
            if (imagePath!=null){
                String image = imagePath.get(0);
                Log.d(TAG,"Image Path "+image);

                uploadText.setText("Hey I am New Test"); // Not working

                uploadImage.setImageDrawable(null);
                uploadImage.invalidate();

                File file = new File(image);
                Uri newPath = Uri.fromFile(file);

                Log.d(TAG,"Check File "+file);
                Log.d(TAG,"Check Uri  "+newPath);
                Log.d(TAG,"Check ImageView  "+uploadImage);

                Glide.with(getActivity()).load(image).into(uploadImage); // Not working
            }
        }
    }




    @Override
    public void onResume() {
        super.onResume();
        uploadImage.setImageDrawable(null);
        uploadImage.invalidate();
    }
}

我尝试了一些方法，例如使无效、设置图像 view.setBitmapImage(null) 但 none 对我也有效我也尝试更新 textview 但它对我也不起作用。请帮助

Answer 1

您不应该直接从 onActivityResult 方法更新视图，因为它可以在您的 activity 即将被销毁和重新创建之前调用。

Tal Kanel对此提供了很好的解释：

无法在片段中的 onActivityResult 更新视图

Not able to update views at onActivityResult in fragment

java

android

android-fragments

onactivityresult