相关疑难解决方法(0)

我一直在使用API​​ 14开发应用程序,但我不得不降级到API 10.应用程序有片段和活动片段,我已经导入了库并使用了getFragmentSupportManager它,因为它是v4.但是,我有以下错误:

我从头开始创建了一个带有Drawer布局和API 10的虚拟应用程序,它在MyActivity文件中有相同的行,并且不是错误.这是我的代码:

package az.test2;

import android.app.Activity;
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.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.view.Gravity;


public class MyActivity extends ActionBarActivity
    implements NavigationDrawerFragment.NavigationDrawerCallbacks {

    /**
     * Fragment managing the behaviors, interactions and presentation of the navigation drawer.
     */
    private NavigationDrawerFragment mNavigationDrawerFragment;

    /**
     * Used to store the last screen title. For use in {@link #restoreActionBar()}.
     */
    private CharSequence mTitle; …