我正在尝试使用片段中的Ucrop。我面临的问题是onActivityresult没有收到requestCode == UCrop.REQUEST_CROP因此没有执行我需要对图像执行的操作。我已经四处搜索了教程，但我没有找到任何教程。
以下是使用 UCrop 的片段的代码：
public class FragmentSettingsTabImage extends Fragment {
private String TAG = "----->";
Tools t;
private String currentPhotoPath;
private final int REQUEST_TAKE_PHOTO = 1;
private final int CAMERA_PERMISSIONS = 2;
private ImageView imgTabImageDriver;
private Button btnSettingsSaveImage;
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == CAMERA_PERMISSIONS) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// All good so launch take picture from here
dispatchTakePictureIntent();
} else {
// Permission denied. Warn the user and kick out of app
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.permsDeniedCameraTitle);
builder.setMessage(R.string.permsDeniedCameraMessage);
builder.setCancelable(false);
builder.setPositiveButton(R.string.close, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Objects.requireNonNull(getActivity()).finishAffinity();
}
});
builder.create().show();
}
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_TAKE_PHOTO && resultCode == Activity.RESULT_OK) {
Uri starturi = Uri.fromFile(new File(currentPhotoPath));
Uri destinationuri = Uri.fromFile(new File(currentPhotoPath));
UCrop.Options options = AppConstants.makeUcropOptions(Objects.requireNonNull(getActivity()));
UCrop.of(starturi, destinationuri).withOptions(options).start(getActivity());
}
Log.d(TAG, "onActivityResult: CCCCCCC" + resultCode + " " + requestCode);
// On result from cropper add to imageview
getActivity();
if (resultCode == Activity.RESULT_OK && requestCode == UCrop.REQUEST_CROP) {
final Uri resultUri = UCrop.getOutput(data);
assert resultUri != null;
File imgFile = new File(resultUri.getPath());
Picasso.Builder builder = new Picasso.Builder(Objects.requireNonNull(getActivity()));
builder.listener(new Picasso.Listener() {
@Override
public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
exception.printStackTrace();
}
});
builder.build().load(imgFile).into(imgTabImageDriver, new Callback() {
@Override
public void onSuccess() {
btnSettingsSaveImage.setEnabled(true);
}
@Override
public void onError(Exception e) {
e.printStackTrace();
}
});
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
SharedPreferences preferences = Objects.requireNonNull(this.getActivity()).getSharedPreferences("mykago-driver", Context.MODE_PRIVATE);
final SharedPreferences.Editor editor = preferences.edit();
View view = inflater.inflate(R.layout.fragment_settings_tab_image, container, false);
imgTabImageDriver= view.findViewById(R.id.imgTabImageDriver);
ImageView imgTakeSettingsDriverPicture = view.findViewById(R.id.imgTakeSettingsDriverPicture);
btnSettingsSaveImage = view.findViewById(R.id.btnSettingsSaveImage);
imgTakeSettingsDriverPicture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dispatchTakePictureIntent();
}
});
imgTabImageDriver.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dispatchTakePictureIntent();
}
});
btnSettingsSaveImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
editor.putString("driver_picture", currentPhotoPath);
editor.apply();
}
});
Picasso.Builder builder = new Picasso.Builder(Objects.requireNonNull(getContext()));
builder.listener(new Picasso.Listener() {
@Override
public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
exception.printStackTrace();
}
});
Log.d(TAG, "onCreateView: " + preferences.getString("driver_picture", ""));
builder.build().load(new File(preferences.getString("id_picture", ""))).into(imgTabImageDriver);
return view;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(Objects.requireNonNull(getActivity()).getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
Log.d("IMAGE CREATION", ex.toString());
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(getActivity(),
"com.mytestapp.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
String imageFileName = "didimage_" + timeStamp + "_";
File storageDir = Objects.requireNonNull(getActivity()).getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName,
".png",
storageDir
);
// Save a file: path for use with ACTION_VIEW intents
currentPhotoPath = image.getAbsolutePath();
return image;
}
}
来自正常活动的相同代码可以正常工作。任何帮助表示赞赏。
设法
解决了这个问题。要将 UCrop 活动的结果传递给片段而不是托管活动，您需要调用 UCrop....start() 方法，如下所示：
UCrop.of(starturi, destinationuri).withOptions(options).start(getActivity().getApplicationContext(), getFragmentManager().findFragmentByTag("your_fragment_tag"));
所以
.start(Context, Fragment)
这将确保调用片段的onActivityResult，而不是托管活动的。
这也有效：
UCrop.of(sourceUri，destinationUri( .withOptions(options( .start(getActivity((，YourFragment.this(;
如果你想
从片段开始uCrop活动，请使用这个。
UCrop.of(uri, destinationFileName)
.withAspectRatio(1, 1)
.start(getContext(), this, UCrop.REQUEST_CROP);