片段onActivityResult方法执行调用活动onActivityResult

Question

In my fragment I have started startActivityforresult intent for photo capture.I have overridden onActivityResult callback method in fragment class. I have implemented onActivityResult callback in main activity for some other intent. My problem is fragment onActivityResult after execution calls activities onActivityResult method and returns null pointer exception. Fragment onactivityresult method

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) 
{
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == Activity.RESULT_OK) 
    {
        prof_bitmap = null;
        if (requestCode == 0) 
        {
            Log.e("" ,"entered activity Result Code 0");
            Uri photoUri = data.getData();
            if (photoUri != null) 
            {
                String[] filePathColumn = { MediaStore.Images.Media.DATA };
                Cursor cursor = getActivity().getContentResolver().query(
                        photoUri, filePathColumn, null, null, null);
                cursor.moveToFirst();
                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                String filePath = cursor.getString(columnIndex);
                cursor.close();
                Log.e("" ,"File Path" +filePath);
                prof_bitmap = setImage(filePath);
            }
        }
        if (requestCode == 1) 
        {
            Log.e("" ,"entered activity Result Code 1");
            Bitmap bitmap = (Bitmap) data.getExtras().get("data"); 
            prof_bitmap = bitmap;
            Log.e("" ,"entered activity Result Code 1"+bitmap);
            profile_pic.setImageBitmap(bitmap);
        }
    }
}

Activity onActivityResult

  @Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
    super.onActivityResult(requestCode, resultCode, data);
    Log.e("" ,"called onActivityResult in main");
    Session.getActiveSession().onActivityResult(this, requestCode,
            resultCode, data);
}

how to call only fragment onactivityresult method?

MY Logcat

Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data dat=content://media/external/images/media/222 (has extras) }} to activity {com.mobiotics.tvbuddydemo/com.mobiotics.tvbuddydemo.TVBuddyMainActivity}: java.lang.NullPointerException

Answer 1

If you have onActivityResult defined in your Activity, you can't skip it and go directly to the Fragment. You can however redirect it to the Fragment if the Activity does not know how to handle it. Use unique requestCodes to differentiate between who handles the result.

public void onActivityResult(int requestCode, int resultCode, Intent data) 
{
    boolean processed = true;

    if (resultCode == Activity.RESULT_OK) 
    {
        if (requestCode == 0) {
            // Something
        } else if (requestCode == 1) {
            // Something
        } else {
            processed = false;
        }
    } else { // Error
        if (requestCode == 0) {
            // Handle error 
        } else {
            processed = false;
        }
    }

    if (!processed) {
        fragment1.onActivityResult(requestCode, resultCode, data);
        fragment2.onActivityResult(requestCode, resultCode, data);
        ...
        super.onActivityResult(requestCode, resultCode, data);
    }
}

Note: Make sure to call getActivity().startActivityForResult() from your fragment and not simply using this.startActivityForResult()

public void something(Intent intent) {
    getActivity().startActivityForResult(intent);
    // or if you are using SherlockActionBar/Support package
    getSupportActivity().startActivityForResult(intent);
}

Hope this helps.

Answer 2

Try remove the line super.onActivityResult(requestCode, resultCode, data); in your fragment onActivityResult() .

Answer 3

当您使用startActivityForResult启动的Activity调用finish()时，将调用public void onActivityResult

Answer 4

将首先调用Activity中的onActivityResult，您不应该删除处理Activity中的结果，而是通过检查requestCode来执行您想要的操作。

Answer 5

I aslo face this problem.

Calling of an activity from fragment

((Activity)context).startActivityForResult(photoPickerIntent, 100);

here "context" from FragmentActivity. Now the result comes in FargmentActivity onActivityResult method. to switch this result you have to declare a static variable of fragment class in fragmetn activity class.

static ActivityUploadPhotos activityUploadPhotos;

...
ActivityUploadPhotos f = new ActivityUploadPhotos();
ActivityHome.activityUploadPhotos=f;
......

if(activityUploadPhotos!=null)
{
           activityUploadPhotos.onActivityResult(requestCode, resultCode, data);
}