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);
}
}
其他答案中没有描述的另一个用例:
当使用exception.startResolutionForResult()时，在fragment中声明的onActivityResult()不会被调用:
if (exception is ResolvableApiException) {
exception.startResolutionForResult(activity!!, MY_REQUEST_CODE)
}
在这种情况下，将exception.startResolutionForResult()替换为fragment的startIntentSenderForResult():
if (exception is ResolvableApiException) {
startIntentSenderForResult(exception.resolution.intentSender, MY_REQUEST_CODE, null, 0, 0, 0, null)
}
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
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。
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.
}
其他答案中没有描述的另一个用例:
当使用exception.startResolutionForResult()时，在fragment中声明的onActivityResult()不会被调用:
if (exception is ResolvableApiException) {
exception.startResolutionForResult(activity!!, MY_REQUEST_CODE)
}
在这种情况下，将exception.startResolutionForResult()替换为fragment的startIntentSenderForResult():
if (exception is ResolvableApiException) {
startIntentSenderForResult(exception.resolution.intentSender, MY_REQUEST_CODE, null, 0, 0, 0, null)
}
