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Is there a method like setResult() in fragment?

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.
CalendarFragment:
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);
}
}

You should call it on your fragment owning activity:
getActivity().setResult(Activity.RESULT_OK, data)
also you might want to finish your activity:
getActivity().finish();

If you starting your fragment from another fragment.
You need to use:
/**
* 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.
Like this:
Fragment newFragment = new YourFragment();
newFragment .setTargetFragment(this, SOME_REQUEST_INT);
And then, in YourFragment
Intent data = new Intent();
data.putExtra(Constants.DATE_KEY, (Date)(getArguments().get(Constants.DATE_KEY)));
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, intent);
Or
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_CANCELED, null);

Use this it may be help to you..
getActivity().setResult(Activity.RESULT_OK, data);

Use
getActivity().setResult(Activity.RESULT_OK, data);

Open activity on button click in NavigationDrawer

I have created project in Android Studio with Navigation Drawer Activity and I have successfully created it,On navigation drawer activity I have created 3 section, In 1st section I put Button and I want to setOnClickListener method on that button which lead to start new Activity (ex. "xyz.class") I have used code
startActivity(new Intent(this,xyz.class));
but "this" keyword is not working and gives me error.
So, I changed code like
Context c;
startActivity(new Intent(c,xyz.class));
which gives NullPointerException,
My Section1 code is
import android.app.Fragment;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.Toast;
import com.example.pratik.crm50.R;
import com.gc.materialdesign.views.ButtonFloat;
public class Dashboard extends Fragment implements View.OnClickListener {
View rootView;
Context c;
private ButtonFloat float_btn;
private Button but;
private Button btn;
Context c;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View v;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
v = inflater.inflate(R.layout.dashboard_layout,container, false);
} else {
v = super.onCreateView(inflater,container, savedInstanceState);
}
View vv=v.findViewById(R.id.button_simple);
vv.setOnClickListener(this);
return v;
}
#Override
public void onClick(View v) {
// Toast.makeText(c,"Float Button",Toast.LENGTH_SHORT).show();
Log.e("ssas","sasafa");
//startActivity(new Intent(c,xyz.class));
}
}
and I can get successfully log Log.e("ssas","sasafa") on above code.
So how to do this?

Fragment does not extend Context while the Intent constructor expects the first parameter to be exactly that.
The Context c variable is redundant because a Fragment saves the parent activity by default.
You need to use the activity (class that extends Context) that the fragment is attached to:
startActivity(new Intent(getActivity(), xyz.class));

You get a NullPointerException, because you´re never assining a value to Context c.
So as user3249477 also mentioned use the method getActivity() to assign a value to c like c=getActivity();
Or call it directly while starting the Intent. This would look like this: startActivity(new Intent(getActivity(),xyz.class));

Constructor within activity is undefined

I have been fighting with this error for a couple of hours and I am not able to continue. I need your help here!
I am trying to replace my previous TabNavigation at ActionBar by a ViewPager in SDK21, looking at comments within StackOverflow I found this webpage, where the use of PagerTabStrip is described with an example, so I tried to implement it in my activity, however I am getting an strange error.
I tried to google the problem and all the suggestions are not really applicable to my problem (wrong parameters in the constructor are the usual errors) . I also reproduced the error with a simple Activity in order to avoid anything I have in my previous activity, but the error keeps. I attach you here the code I replicated isolated:
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class TestActivity extends Activity {
CustomPagerAdapter mCustomPagerAdapter;
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.adding_users_to_list);
mCustomPagerAdapter = new CustomPagerAdapter(getFragmentManager(), this.getApplicationContext());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mCustomPagerAdapter);
}
class CustomPagerAdapter extends FragmentPagerAdapter {
Context mContext;
public CustomPagerAdapter(FragmentManager fm, Context context) {
super(fm);
mContext = context;
}
#Override
public Fragment getItem(int position) {
// Create fragment object
Fragment fragment = new DemoFragment();
// Attach some data to the fragment
// that we'll use to populate our fragment layouts
Bundle args = new Bundle();
args.putInt("page_position", position + 1);
// Set the arguments on the fragment
// that will be fetched in the
// DemoFragment#onCreateView
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
return "Page " + (position + 1);
}
}
class DemoFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout resource that'll be returned
View rootView = inflater.inflate(R.layout.fragment_users, container, false);
// Get the arguments that was supplied when
// the fragment was instantiated in the
// CustomPagerAdapter
Bundle args = getArguments();
((TextView) rootView.findViewById(R.id.text_option)).setText("Page " + args.getInt("page_position"));
return rootView;
}
}
}
I am getting in the call to the constructor the following error:
"The constructor TestActivity.CustomePageAdapter(FragmentManager, Context) is undefined"
In here:
mCustomPagerAdapter = new CustomPagerAdapter(getFragmentManager(), this.getApplicationContext());
I have tried to introduce the Adapter outside and inside the activity definition and is still not working. Is likely to be something simple, but... I can't see it and I need other eyes. Any idea what I am doing wrong?

change the import of the activity to:
import android.support.v4.app.FragmentActivity;
Also change constructor to:
mCustomPagerAdapter = new CustomPagerAdapter(getSupportFragmentManager(), this.getApplicationContext());

The reason is that your activity is used from the ADT:
import android.app.Activity;
and the Fragments used from the support package:
import android.support.v4.app.FragmentManager;
change the import of the activity to:
import android.support.v4.app.FragmentActivity;

Android Fragment Code issue

I'm wondering how I can get the code below to work with my project as to combine the two so that it could work. What I have is an implemented Navigation Drawer in the app
1st Java Code Using Fragment:
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class PagesFragment extends Fragment {
public PagesFragment(){}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_pages, container, false);
return rootView;
}
}
2nd Java Code Using Activity:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class AppointmentActivity extends Activity {
Button sendEmail;
EditText msg;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.appointment_layout);
sendEmail = (Button) findViewById(R.id.sndBtn);
sendEmail.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
msg = (EditText) findViewById(R.id.msgTxt);
String message = msg.getText().toString();
sendEmail(message);
}
});
}
protected void sendEmail(String message) {
String[] to=new String[]{"Shop#email.com"};
String subject=("Shop Appointment");
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.putExtra(Intent.EXTRA_EMAIL, to);
emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
emailIntent.putExtra(Intent.EXTRA_TEXT, message);
emailIntent.setType("message/rfc822");
startActivity(Intent.createChooser(emailIntent, "Gmail"));
}
}
I've tried to combine the two myself but I don't have a lot of experience dealing with android to know how to make both of these codes work side by side and not give me a force close. Anything would be helpful!

To combine these codes, you need to declare your Activity like a FragmentActivity (it will be "host" your Fragment). See this answer: https://stackoverflow.com/a/10609839/2668136
And Google training Fragment
Also Google documentation FragmentActivity
Hope this help.

tabhost inside actionbar using fragment

I have used actionbar and it is working fine. I have four fragment in the actionbar. I want to implement tabhost in one of the fragment. I have used the following code.
package com.main.udebate;
import android.support.v4.app.Fragment;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
import android.widget.TextView;
public class Info extends Fragment {
public Info() {
}
public static final String ARG_SECTION_NUMBER = "section_number";
private TabHost mTabHost;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Intent i = new Intent(Info.this, about.class);
View view = inflater.inflate(R.layout.info, container, false);
mTabHost = (TabHost) view.findViewById(android.R.id.tabhost);
mTabHost.setup();
TabHost.TabSpec tab = mTabHost.newTabSpec("my tab content");
tab.setIndicator("my tab content");
tab.setContent(i);
mTabHost.addTab(tab);
mTabHost = (TabHost) view.findViewById(android.R.id.tabhost);
return view;
}
}
I am getting error on Intent i = new Intent(Info.this, about.class); line as The constructor Intent(Info, Class) is undefined.
About.java
package com.main.udebate;
import android.app.Activity;
import android.os.Bundle;
public class about extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
}
}
Can someone pls help me to set tabhost inside fragment.
Thanks,

try to use this
Intent i = new Intent(getActivity(), about.class);
instead of this line
Intent i = new Intent(Info.this, about.class);
As Info.this does not mean any context thats why you get "The constructor Intent(Info, Class) is undefined." this error.
In fragment where you use this reference you should instead use getActivity() reference