java 片段中是否有像 setResult() 这样的方法？
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Is there a method like setResult() in fragment?
提问by PersianBlue
I am using a fragment. I am getting an error in the onResult()method. I need a substitute method for setResult(RESULT_OK, data)that I can use in my fragment. Please help.
我正在使用一个片段。我在onResult()方法中遇到错误。我需要一个setResult(RESULT_OK, data)可以在我的片段中使用的替代方法。请帮忙。
CalendarFragment:
日历片段：
package app.pal.study.samplestudy;
import android.app.Fragment;
import android.content .Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import java.util.Date;
import java.util.List;
public class CalendarFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_calendar, container, false);
return rootView;
}
@Override
public void onResume() {
super.onResume();
refresh();
}
private void refresh() {
CalendarEventDataSource dataSource = new CalendarEventDataSource(getActivity());
dataSource.openReadOnlyDB();
final List<CalendarEvent> calendarEvents = dataSource.getAllEvents();
dataSource.close();
CalAllEventsListAdapter adapter = new CalAllEventsListAdapter(calendarEvents);
ListView listView = (ListView) getView().findViewById(R.id.all_event_list);
listView.setAdapter(adapter);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
end();
return true;
}
return super.onOptionsItemSelected(item);
}
public void onBackPressed() {
end();
}
private void end() {
Intent data = new Intent();
data.putExtra(Constants.DATE_KEY, (Date)(getArguments().get(Constants.DATE_KEY)));
setResult(RESULT_OK, data);
}
}
回答by marcinj
You should call it on your fragment owning activity:
您应该在拥有片段的活动中调用它：
getActivity().setResult(Activity.RESULT_OK, data)
also you might want to finish your activity:
你也可能想完成你的活动：
getActivity().finish();
回答by G_Artem
If you starting your fragment from another fragment.
如果你从另一个片段开始你的片段。
You need to use:
您需要使用：
/**
* Optional target for this fragment. This may be used, for example,
* if this fragment is being started by another, and when done wants to
* give a result back to the first. The target set here is retained
* across instances via {@link FragmentManager#putFragment
* FragmentManager.putFragment()}.
*
* @param fragment The fragment that is the target of this one.
* @param requestCode Optional request code, for convenience if you
* are going to call back with {@link #onActivityResult(int, int, Intent)}.
*/
public void setTargetFragment(Fragment fragment, int requestCode) {
}
When starting your Fragment.
启动 Fragment 时。
Like this:
像这样：
Fragment newFragment = new YourFragment();
newFragment .setTargetFragment(this, SOME_REQUEST_INT);
And then, in YourFragment
然后，在YourFragment 中
Intent data = new Intent();
data.putExtra(Constants.DATE_KEY, (Date)(getArguments().get(Constants.DATE_KEY)));
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, intent);
Or
或者
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_CANCELED, null);
回答by Ragesh Ramesh
Use
利用
getActivity().setResult(Activity.RESULT_OK, data);
回答by Abhishek Patel
Use this it may be help to you..
使用这个它可能对你有帮助..
getActivity().setResult(Activity.RESULT_OK, data);
