getSupportActionBar().setDisplayHomeAsUpEnabled(true);
  // 如果你的minSdkVersion屬性是11或更高, 應(yīng)該這么用:
  // getActionBar().setDisplayHomeAsUpEnabled(true);

 @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case android.R.id.home:
        ToastUtils.show(this, "home");
        Intent upIntent = NavUtils.getParentActivityIntent(this);
        //判斷當(dāng)前Activity在向上導(dǎo)航到目標(biāo)Intent upIntent是否需要重建新的任務(wù)棧，
        if (NavUtils.shouldUpRecreateTask(this, upIntent)) {
          //重建新的任務(wù)棧
          TaskStackBuilder.create(this)
              .addNextIntentWithParentStack(upIntent)
              .startActivities();
        } else {
          //使用當(dāng)前任務(wù)棧
          upIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//清空任務(wù)棧中目標(biāo)Activity實例之上的所有實例
          NavUtils.navigateUpTo(this, upIntent);//直接在同一個任務(wù)棧跳轉(zhuǎn)
        }
        return true;//消費掉事件
    }
    return super.onOptionsItemSelected(item);
  }

 /*設(shè)置左上角Logo Icon*/
    actionBar.setLogo(R.drawable.go_back_64px);//(單獨設(shè)置沒作用)
    actionBar.setDisplayShowHomeEnabled(true);//是否顯示Logo,必須為他setLogo()才起作用
    actionBar.setDisplayUseLogoEnabled(true);//是否使用Activity的Logo，即setLogo()方法設(shè)置的Logo
 
    actionBar.setDisplayHomeAsUpEnabled(false);//是否顯示左上角默認(rèn)的返回按鈕
    actionBar.setHomeButtonEnabled(false);//按鈕是否可以點擊（實測無用，false下依然可以點擊--已經(jīng)設(shè)置了該Activity的父級Activity）

<!--設(shè)置標(biāo)題的顏色，注意使用兼容包下的屬性-->
    <item name="android:titleTextStyle">@style/MyTheme.ActionBar.TitleTextStyle</item>
    <item name="titleTextStyle">@style/MyTheme.ActionBar.TitleTextStyle</item>
 <style name="MyTheme.ActionBar.TitleTextStyle" parent="@android:style/TextAppearance.Holo.Widget.ActionBar.Title">
    <item name="android:textColor">@color/blue</item>
    <item name="android:textSize">16sp</item>
  </style>

 @Override
  public boolean onTouchEvent(MotionEvent event) {
    Log.d("debug", "onTouchEvent");
    if (actionBar == null) {
      actionBar = getSupportActionBar();
    }
    switch (event.getAction()) {
      case MotionEvent.ACTION_UP:
//        if (actionBar != null) {
        if (actionBar.isShowing()) {
          //隱藏
          actionBar.hide();
        } else {
          //顯示
          actionBar.show();
        }
//        }
        break;
    }
    return super.onTouchEvent(event);
  }

 <item name="android:windowActionBarOverlay">true</item>
    <!-- 兼容支持庫 -->
    <item name="windowActionBarOverlay">true</item>

 <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">true</item>
//除此之外還可以設(shè)置系統(tǒng)狀態(tài)欄的顏色：適用于頁面是單純顏色：
<item name="android:windowTranslucentStatus">false</item>
    <item name="android:windowTranslucentNavigation">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>

<!--設(shè)置menu菜單不遮擋actionbar-->
    <item name="actionOverflowMenuStyle">@style/OverflowMenu</item>
//創(chuàng)建這個主題，繼承自主題Widget.AppCompat.PopupMenu
 <style name="OverflowMenu" parent="Widget.AppCompat.PopupMenu.Overflow">
    <!--兼容Api 21之前的版本 -->
    <item name="overlapAnchor">true</item>
 
    <!-- Api 21-->
    <!--<item name="android:overlapAnchor">false</item>-->
  </style>

 <!--設(shè)置menu的文字顏色-->
    <!--<item name="actionMenuTextColor">@color/yellow</item>-->
    <!--<item name="android:actionMenuTextColor">@color/yellow</item>-->
    <!--上面兩個設(shè)置是無效的-->
    <item name="android:itemTextAppearance">@style/myCustomMenuTextApearance</item>
 <style name="myCustomMenuTextApearance" parent="@android:style/TextAppearance.Widget.IconMenu.Item">
    <!--文字顏色-->
    <item name="android:textColor">@color/blue</item>
    <!--文字大小-->
    <item name="android:textSize">16sp</item>
  </style>

 <!--s設(shè)置Menu菜單的背景色-->
    <item name="android:itemBackground">@color/black_light</item>

<item android:id="@+id/action_search"
   android:title="@string/action_search"
   android:icon="@drawable/ic_search"
   app:showAsAction="ifRoom|collapseActionView"
   app:actionViewClass="android.support.v7.widget.SearchView" />

 @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    //找到ActionBar上所添加的UI組件的方法:
    mSearchView = (SearchView) menu.findItem(R.id.searchItem).getActionView();
    mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
      @Override
      public boolean onQueryTextSubmit(String string) {
        Toast.makeText(ShowImageActivity.this, "查詢:" + string, Toast.LENGTH_SHORT).show();
        return false;
      }
 
      @Override
      public boolean onQueryTextChange(String string) {
        return true;
      }
    });
}

<item
    android:id="@+id/custom_search"
    android:icon="@drawable/ic_action_search"
    android:title="custom_search"
    app:actionLayout="@layout/search_layout"
    app:showAsAction="collapseActionView|always|withText" />

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="200dp"
  android:layout_height="wrap_content"
  android:gravity="center_vertical"
  android:orientation="horizontal"
  android:padding="5dp">
 
  <ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="5dp"
    android:src="@drawable/ic_action_search" />
 
  <EditText
    android:layout_width="200dp"
    android:layout_height="wrap_content"
    android:layout_weight="1" />
</LinearLayout>

MenuItem collapseActionView = menu.findItem(R.id.searchItem);
    // Define the listener
    MenuItemCompat.OnActionExpandListener expandListener = new MenuItemCompat.OnActionExpandListener() {
      @Override
      public boolean onMenuItemActionCollapse(MenuItem item) {
        // Do something when action item collapses
        ToastUtils.show(ShowImageActivity.this, "action item collapses");
        return true; // Return true to collapse action view
 
      }
 
      @Override
      public boolean onMenuItemActionExpand(MenuItem item) {
        // Do something when expanded
        ToastUtils.show(ShowImageActivity.this, "action item expanded");
        return true; // Return true to expand action view
      }
    };
    MenuItemCompat.setOnActionExpandListener(collapseActionView, expandListener);