Question

在我的片段中，我已经启动了startActivityforresult意图进行照片捕获。我已经在片段类中重写了onActivityResult回调方法。我已经在主要活动中实现了onActivityResult回调以实现其他一些意图。在执行调用活动onActivityResult方法并返回空指针异常后，我的问题是片段onActivityResult。片段onactivityresult方法

@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);
        }
    }
}

活动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);
}

如何只调用片段onactivityresult方法？

我的Logcat

未能提供结果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

如果您在Activity中定义了onActivityResult，则不能跳过它并直接转到Fragment。但是，如果Activity不知道如何处理它，您可以将其重定向到Fragment。使用唯一的requestCodes来区分处理结果的人。

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);
    }
}

注意：确保从片段中调用getActivity（）。startActivityForResult（），而不是简单地使用this.startActivityForResult（）

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

希望这有帮助。

Answer 2

尝试删除片段super.onActivityResult(requestCode, resultCode, data);中的行onActivityResult()。

Answer 3

当您public void onActivityResult Activity开始调用startActivityForResult

时，会调用{p> finish()

Answer 4

首先调用Activity中的onActivityResult，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

我也面临这个问题。

从片段

调用活动

（（活动）上下文）.startActivityForResult（photoPickerIntent，100）;

来自FragmentActivity的“上下文”。现在结果出现在FargmentActivity onActivityResult方法中。要切换此结果，您必须在fragmetn活动类中声明片段类的静态变量。

static ActivityUploadPhotos activityUploadPhotos;

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

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

片段onActivityResult方法执行调用活动onActivityResult

5 个答案: