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

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) {

    }

}

其他回答

我也面临着同样的问题,一旦我把这段代码从一个片段转移到一个实用工具类,将parentActivity作为参数传递,

Intent intent = new Intent(parentActivity, CameraCaptureActivity.class);
parentActivity.startActivityForResult(intent,requestCode);

然后我没有得到任何值在onActivityResult方法的片段, 之后,我把参数改为Fragment,所以修改后的method定义是这样的,

Intent intent = new Intent(fragment.getContext(), CameraCaptureActivity.class);
fragment.startActivityForResult(intent,requestCode);

在那之后,我能够在片段上的onActivityResult中获得值

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
}

最简单的方法之一是从你的片段开始一个活动。

startActivity(ActivityName);

然后,添加你调用startActivityForResult(intent,"1");在你的Activity中添加onActivityResult

startActivityForResult(intent,"1");

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.dualPane);
    fragment.onActivityResult(requestCode, resultCode, data);
// perform other activity result like fetching from Uris or handling cursors

finish(); // finish the activity will  get to back to your fragment.
}

只需简单地调用:

startActivityForResult(intent, "1");

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