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

You can simply override BaseActivity onActivityResult on fragment baseActivity.startActivityForResult . On BaseActivity add interface and override onActivityResult. private OnBaseActivityResult baseActivityResult; public static final int BASE_RESULT_RCODE = 111; public interface OnBaseActivityResult{ void onBaseActivityResult(int requestCode, int resultCode, Intent data); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(getBaseActivityResult() !=null && requestCode == BASE_RESULT_RCODE){ getBaseActivityResult().onBaseActivityResult(requestCode, resultCode, data); setBaseActivityResult(null); } On Fragment implements OnBaseActivityResult @Override public void onBaseActivityResult(int requestCode, int resultCode, Intent data) { Log.d("RQ","OnBaseActivityResult"); if (data != null) { Log.d("RQ","OnBaseActivityResult + Data"); Bundle arguments = data.getExtras(); } }

这个变通方法会奏效。

其他回答

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
}

我只是做了一个变通方法:

public static Fragment _tempFragment = null;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(_tempFragment != null)
        _tempFragment.onActivityResult(requestCode, resultCode, data);
}

在Fragment中,在startActivityResult之前,设置

MainActivity._tempFragment = this;

在片段中的onActivityResult <——之后

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

     // Do your job
     {

     }
     MainActivity._tempFragment = null;
}

在我的案例中,我在开发人员选项中打开了“不保留活动”,这导致了这个问题。

说不定能帮到别人。

宿主活动覆盖onActivityResult(),但它没有为未处理的结果代码调用super.onActivityResult()。显然,即使片段是执行startActivityForResult()调用的片段,活动也会首先处理结果。当您考虑片段的模块化时,这是有意义的。一旦我为所有未处理的结果实现了super.onActivityResult(),片段就有机会处理结果。

还有来自@siqing的回答:

为了在你的片段中得到结果,确保你调用startActivityForResult(intent,111);代替getActivity().startActivityForResult(intent,111);在你的碎片里。

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) {

    }

}