由网友(被门挤了的核桃还能补脑么)分享简介：我使用的支持库 android.support.v7.app.actionbar ，因为我想在 API级别8 ，然后上面的操作栏不过，下面这句话给了我这样的变化mActionBar错误动作条I am using support library android.support.v7.app.actionbar bec...

我使用的支持库 android.support.v7.app.actionbar ，因为我想在 API级别8 ，然后上面的操作栏 不过，下面这句话给了我这样的变化mActionBar错误动作条

I am using support library android.support.v7.app.actionbar because i want action bar in api level 8 and above But following sentence gives me error like change mActionBar to ActionBar

mActionBar=getActionBar();

我的 FragmentActivity 中，我wnat要使用动作条标签如下：

My FragmentActivity in which I wnat to use ActionBar Tab is as follows

import com.example.bottomtabadapter.TabPageAdapter;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBar.Tab;
import android.support.v7.app.ActionBarActivity;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.Menu;

public class TabFragmentActivity extends FragmentActivity implements ActionBar.TabListener{

private ViewPager mViewPager;
private ActionBar mActionBar;
private TabPageAdapter mAdapter;

private String[] tabs={"Chat","Groups","Contacts"};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_tab_fragment);

    mViewPager=(ViewPager)findViewById(R.id.pager);
    mActionBar=getActionBar();  // here is the error
    mAdapter=new TabPageAdapter(getSupportFragmentManager());

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.tab, menu);
    return true;
}

@Override
public void onTabReselected(Tab arg0, FragmentTransaction arg1) {
    // TODO Auto-generated method stub

}

@Override
public void onTabSelected(Tab arg0, FragmentTransaction arg1) {
    // TODO Auto-generated method stub

}

@Override
public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {
    // TODO Auto-generated method stub

}

}

推荐答案

如果你想拥有从API 7旧设备行动起来吧，最多你也许应该延长ActionBarActiviy

If you want to have action bar for old devices from API 7 and up you should maybe extend ActionBarActiviy