当相机活动返回时,承载这个片段的活动有它的onActivityResult被调用。

我的片段开始一个活动的结果与意图发送给相机拍照。图片应用程序加载正常,拍摄照片并返回。然而onActivityResult从未被击中。我设置了断点,但什么都没有触发。一个片段可以有onActivityResult吗?我想是的,因为它是一个已提供的函数。为什么这个没有被触发?

ImageView myImage = (ImageView)inflatedView.findViewById(R.id.image);
myImage.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(cameraIntent, 1888);
    }
});

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if( requestCode == 1888 ) {
        Bitmap photo = (Bitmap) data.getExtras().get("data");
        ((ImageView)inflatedView.findViewById(R.id.image)).setImageBitmap(photo);
    }
}

当前回答

对于那些使用Android导航组件的人来说,Kotlin版本的灵感来自Mohit Mehta的答案

 override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    supportFragmentManager.primaryNavigationFragment?.childFragmentManager?.fragments?.forEach { fragment ->
        fragment.onActivityResult(requestCode, resultCode, data)
    }
}

其他回答

我想你调用了getActivity(). startactivityforresult(意图,111);。你应该调用startActivityForResult(intent,111);。

对于嵌套片段(例如,当使用ViewPager时)

在你的主要活动:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
}

在你的主顶级片段(ViewPager片段)中:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    YourFragment frag = (YourFragment) getChildFragmentManager().getFragments().get(viewPager.getCurrentItem());
    frag.yourMethod(data);  // Method for callback in YourFragment
    super.onActivityResult(requestCode, resultCode, data);
}

在YourFragment(嵌套片段)中:

public void yourMethod(Intent data){
    // Do whatever you want with your data
}

我在使用ChildFragmentManager时有同样的问题。管理器不会将结果传递给嵌套片段,您必须在基本片段中手动执行此操作。

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    Fragment fragment = (Fragment) getChildFragmentManager().findFragmentByTag(childTag);
    if (fragment != null) {
        fragment.onActivityResult(requestCode, resultCode, intent);
    }
}

只需简单地调用:

startActivityForResult(intent, "1");

首先你需要在Activity中重写这段代码;

 @Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
}

之后,在你的片段中,

startActivityForResult(intent,GALLERY_REQUEST_CODE);

在你的片段中,

@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    // Result code is RESULT_OK only if the user selects an Image
    if (resultCode == Activity.RESULT_OK) {

    }

}