方法调用mActionBar = getActionBar()给出错误 [英] Method call mActionBar=getActionBar() gives error
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问题描述
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<一href="http://developer.android.com/reference/android/support/v7/app/ActionBarActivity.html">ActionBarActiviy
If you want to have action bar for old devices from API 7 and up you should maybe extend ActionBarActiviy
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