Android ActionBar使用

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

V4包和V7包

1.添加左侧返回按钮：

 /*设置左上角Logo Icon*/
        actionBar.setLogo(R.drawable.go_back_64px);//(单独设置没作用)
        actionBar.setDisplayShowHomeEnabled(true);//是否显示Logo,必须为他setLogo()才起作用
        actionBar.setDisplayUseLogoEnabled(true);//是否使用Activity的Logo，即setLogo()方法设置的Logo
 
        actionBar.setDisplayHomeAsUpEnabled(false);//是否显示左上角默认的返回按钮
        actionBar.setHomeButtonEnabled(false);//按钮是否可以点击（实测无用，false下依然可以点击--已经设置了该Activity的父级Activity）

设置标题的颜色：

<!--设置标题的颜色，注意使用兼容包下的属性-->
        <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>

设置Actionbar浮动:

  @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()) {
                    //隐藏
                    actionBar.hide();
                } else {
                    //显示
                    actionBar.show();
                }
//                }
                break;
        }
        return super.onTouchEvent(event);
    }

getWindow().setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

<item name="android:windowTranslucentStatus">true</item>

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

 <item name="android:windowTranslucentStatus">true</item>
        <item name="android:windowTranslucentNavigation">true</item>

<item name="android:windowTranslucentStatus">false</item>
        <item name="android:windowTranslucentNavigation">true</item>
        <item name="android:statusBarColor">@android:color/transparent</item>

设置Menu菜单不遮挡AcionBar：

<!--设置menu菜单不遮挡actionbar-->
        <item name="actionOverflowMenuStyle">@style/OverflowMenu</item>

 <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>

消除左侧按钮的遗留空白：

 <!--设置menu的文字颜色-->
        <!--<item name="actionMenuTextColor">@color/yellow</item>-->
        <!--<item name="android:actionMenuTextColor">@color/yellow</item>-->
        <!--上面两个设置是无效的-->
        <item name="android:itemTextAppearance">@style/myCustomMenuTextApearance</item>

 <style name="myCustomMenuTextApearance" parent="@android:style/TextAppearance.Widget.IconMenu.Item">
        <!--文字颜色-->
        <item name="android:textColor">@color/blue</item>
        <!--文字大小-->
        <item name="android:textSize">16sp</item>
    </style>

设置Menu菜单的背景色：

 <!--s设置Menu菜单的背景色-->
        <item name="android:itemBackground">@color/black_light</item>

actionViewClass: The class of a widget that implements the action.
actionLayout: A layout resource describing the action‘s components.

<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组件的方法:
        mSearchView = (SearchView) menu.findItem(R.id.searchItem).getActionView();
        mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String string) {
                Toast.makeText(ShowImageActivity.this, "查询:" + 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);