Demi Dimitrova :
Im using the next camera code in several activities and I would like to make a class that encapsulate the methods for using the camera in Android.
What I am trying to get is the Activity class be something like:
Public class Myfragment extends Fragment{
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.profile_fragment, container, false);
mButtonProfilePhoto = v.findViewById(R.id.buttonProfilePhoto);
mButtonProfilePhoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Here I call the camera intent.
Camera.dispatchTakePictureIntent(getActivity(), mPhotoFile);
}
});
return v;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
//handle the camera result
}
The Camera class looks something like this:
public class Camera{
public static void dispatchTakePictureIntent(Activity activity, File file) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(activity.getPackageManager()) != null) {
// Create the File where the photo should go
file = null;
try {
file = Camera.createImageFile(activity);
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (file != null) {
Uri photoURI = FileProvider.getUriForFile(activity,
"com.itcom202.weroom.fileprovider",
file );
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult( takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
}
}
The issue that I have right now is that I never get a call back from onActivityResult from the fragment.
Xavier Rubio Jansana :
OS has no support to send onActivityResult() to Fragment's. Support library, though, has a mechanism to do that, that registers the call to a special table in the AppCompatActivity. The trick here is that you have to use Fragment's own startActivityForResult(), not Activity's one.
So, your Camera class code should look like:
public class Camera{
public static void dispatchTakePictureIntent(Activity activity, Fragment fragment, File file) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(activity.getPackageManager()) != null) {
// Create the File where the photo should go
file = null;
try {
file = Camera.createImageFile(activity);
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (file != null) {
Uri photoURI = FileProvider.getUriForFile(activity,
"com.itcom202.weroom.fileprovider",
file );
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
fragment.startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
}
}
Notice last line is using Fragment's startActivityForResult()