ActionBar之Tab的使用

ActionBar的使用常見於4.0系統，其Tab的使用挺廣泛的，在此介紹使用方法：

1、如同TabHost控制項，每個tab下需要新增內容，這個內容需要結合fragment來顯示，因此需建立fragment類

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class AFragmentTab extends Fragment{

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  return inflater.inflate(R.layout.main, container, false); 
 }
}

 

2、將fragment添加至ActionBar Tab上，並添加tab監聽

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.SearchView;

public class ActionBarTestActivity extends Activity {

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ActionBar bar = this.getActionBar();
       bar.setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP, ActionBar.DISPLAY_HOME_AS_UP);
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
        ActionBar.Tab tabA = bar.newTab().setText("A Tab"); 
        ActionBar.Tab tabB = bar.newTab().setText("B Tab"); 
        ActionBar.Tab tabC = bar.newTab().setText("C Tab"); 
        Fragment fragmentA = new AFragmentTab(); 
        Fragment fragmentB = new BFragmentTab(); 
        Fragment fragmentC = new CFragmentTab(); 
        tabA.setTabListener(new MyTabsListener(fragmentA)); 
        tabB.setTabListener(new MyTabsListener(fragmentB)); 
        tabC.setTabListener(new MyTabsListener(fragmentC)); 
        bar.addTab(tabA); 
        bar.addTab(tabB); 
        bar.addTab(tabC); 

    }
  
    protected class MyTabsListener implements ActionBar.TabListener 
    { 
        private Fragment fragment; 
        public MyTabsListener(Fragment fragment) 
        { 
            this.fragment = fragment; 
        } 
        @Override 
        public void onTabSelected(Tab tab, FragmentTransaction ft) 
        { 
            ft.add(R.id.fragment_place, fragment, null); 
        }
  @Override
  public void onTabReselected(Tab arg0, FragmentTransaction arg1) {
   // TODO Auto-generated method stub
   
  }
  @Override
  public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {
   // TODO Auto-generated method stub
   
  } 
    } 

}