该方法在

 FragmentActivity 

中定义>。请参阅 http://developer.android.com/reference/android/support /v4/app/FragmentActivity.html#getSupportFragmentManager（） [ ^ ]。

DroidGap是否从FragmentActivity扩展？

I try to integrate phonegap in android using eclipse IDE. I am getting the following error. Please help me.

Error:

The method getSupportFragmentManager() is undefined for
the type MainActivity
- Line breakpoint:MainActivity [line: 25] - onCreate(Bundle)


program:

package com.example.hellogap;

import org.apache.cordova.DroidGap;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;


public class MainActivity extends DroidGap {
//ActionBarActivity
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}

/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {

public PlaceholderFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}

}



Thanks in advance

The method is defined in

FragmentActivity

. See http://developer.android.com/reference/android/support/v4/app/FragmentActivity.html#getSupportFragmentManager()[^].
Is DroidGap extended from FragmentActivity?