ActionBar点击弹出下拉框操作

首先：

getActionBar().setDisplayShowTitleEnabled(false);

ActionBar.LayoutParams lp = new ActionBar.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
lp.gravity = lp.gravity & ~Gravity.HORIZONTAL_GRAVITY_MASK | Gravity.LEFT;
ActionBarPopupButton popupButton = new ActionBarPopupButton(this);
popupButton.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

@Override
public boolean onMenuItemClick(MenuItem item) {
Intent intent = new Intent();
intent.setClass(MainActivity.this, cls[item.getOrder()]);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
if (item.getOrder() == 0) {
intent.putExtra(Extras.DATE, mDates.get(mViewPager.getCurrentItem()));
}
startActivity(intent);
return false;
}
});
getActionBar().setCustomView(popupButton, lp);
int change = getActionBar().getDisplayOptions() ^ ActionBar.DISPLAY_SHOW_CUSTOM;
getActionBar().setDisplayOptions(change, ActionBar.DISPLAY_SHOW_CUSTOM);

private Class<?>[] cls = new Class[] { HistoryActivity.class, VibrateActivity.class, CircleActivity.class, PersonalActivity.class, DeviceActivity.class };

第二：

public class ActionBarPopupButton extends Button implements OnClickListener {

private PopupMenu mPopupMenu;

public ActionBarPopupButton(Context context) {
super(context);
setBackgroundResource(R.drawable.abc_spinner_ab_holo_dark);
setTextAppearance(getContext(), android.R.style.Widget_Spinner);
setText(getContext().getString(R.string.title_activity_detail));
setTextColor(getResources().getColor(R.color.white));
setOnClickListener(this);
mPopupMenu = new PopupMenu(getContext(), this);
mPopupMenu.inflate(R.menu.main_navigation_list);
}

@Override
public void onClick(View v) {
mPopupMenu.show();
}

public void setOnMenuItemClickListener(OnMenuItemClickListener listener) {
mPopupMenu.setOnMenuItemClickListener(listener);
}
}

setBackgroundResource 图片

setTextAppearance 样式

setText 文本内容

setTextColor 颜色

main_navigation_list XML

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
android:orderInCategory="0"
android:showAsAction="never"
android:title="@string/title_activity_history"/>
<item
android:orderInCategory="1"
android:showAsAction="never"
android:title="@string/title_activity_vibrate"/>
<item
android:orderInCategory="2"
android:showAsAction="never"
android:title="@string/title_activity_circle_2"/>
<item
android:orderInCategory="3"
android:showAsAction="never"
android:title="@string/title_activity_personal"/>
<item
android:orderInCategory="4"
android:showAsAction="never"
android:title="@string/title_activity_device"/>

</menu>