ActionBar Tab主要用于Fragment之间的切换，其必须要设置ActionBar.TabListener，详细代码如下ActionBarActivity.java：
import android.app.ActionBar;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.app.ActionBar.Tab;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.MotionEvent;
import android.view.Window;
public class ActionBarActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//使ActionBar变得透明
requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
setContentView(R.layout.main);
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// remove the activity title to make space for tabs
actionBar.setDisplayShowTitleEnabled(false);
AFragment aFragment = new AFragment();
actionBar.addTab(actionBar.newTab().setText("Tab-A")
.setTabListener(new ListenerA(aFragment)));
BFragment bFragment = new BFragment();
actionBar.addTab(actionBar.newTab().setText("Tab-B")
.setTabListener(new ListenerB(bFragment)));
}
//点击显示or隐藏ActionBar
public boolean onTouchEvent(MotionEvent event){
ActionBar bar = getActionBar();
switch(event.getAction()){
case MotionEvent.ACTION_UP:
if(bar.isShowing()) bar.hide();
else bar.show();
break;
default:
break;
}
return true;
}
private class ListenerA implements ActionBar.TabListener {
private AFragment mFragment;
// Called to create an instance of the listener when adding a new tab
public ListenerA(AFragment fragment) {
mFragment = fragment;
}
public void onTabSelected(Tab tab, FragmentTransaction ft) {
ft.add(R.id.fragment, mFragment, null);
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
ft.remove(mFragment);
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// do nothing }
}
}
private class ListenerB implements ActionBar.TabListener {
private BFragment mFragment;
// Called to create an instance of the listener when adding a new tab
public ListenerB(BFragment fragment) {
mFragment = fragment;
}
public void onTabSelected(Tab tab, FragmentTransaction ft) {
ft.add(R.id.fragment, mFragment, null);
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
ft.remove(mFragment);
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// do nothing }
}
}
}
其中涉及到两个Fragment，在前面Fragment的笔记中讲过，这里就不再赘述。类AFragment实现如下，BFragment实现与这类似：
public class AFragment extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.alayout, container, false);
}
}
