系统去掉 Android 4.4.2 的StatusBar和NavigationBar

转自http://blog.csdn.net/myarrow/article/details/25706781

1. System Bar简介

    在Android4.0 (API Level 14)及更高版本中，System Bar由Status Bar<位于顶部>和Navigation Bar<位于底部>组成。

    在Android的官方网站已经详细讲解了如何Hdie Status Bar和Navigation Bar。

   本文化讲述如何在系统中Hide Status Bar和Navigation Bar，使之永远不会出现。本文以Android 4.4.2为例。

   

    上图中的1为：StatusBar

    上图中的2为：NavigationBar

2. 系统Hide Status Bar

    frameworks/base/core/res/res/values/dimens.xml

   把  <dimen name="status_bar_height">25dip</dimen> 修改为<dimen name="status_bar_height">0dip</dimen>

3. 系统Hide Navigation Bar

       frameworks/base/packages/SystemUI/src/com/android/systemui/

         statusbar/phone/PhoneStatusBar.java

       在start函数中注释掉 "addNavigationBar();"

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修改build.prop文件方法：

如果想全部隐藏虚拟按键，只需要在build.prop中增加qemu.hw.mainkeys=1即可。

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1. 隐藏当前Activity标题栏

    在当前Activity中调用：this.requestWindowFeature(Window.FEATURE_NO_TITLE);

2. 隐藏当前Activity状态栏(Status Bar)

2.1 Android 4.0 and Lower

 public class MainActivity extends Activity {

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         // If the Android version is lower than Jellybean, use this call to hide
         // the status bar.
         if (Build.VERSION.SDK_INT < 16) {
             getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
         }
         setContentView(R.layout.activity_main);
     }
     ...
 }

2.2 Android 4.1 and Higher

 View decorView = getWindow().getDecorView();
 // Hide the status bar.
 int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
 decorView.setSystemUiVisibility(uiOptions);
 // Remember that you should never show the action bar if the
 // status bar is hidden, so hide that too if necessary.
 ActionBar actionBar = getActionBar();
 actionBar.hide();

3. 隐藏当前Activity界面的导航栏(NavigationBar)

    在Android4.0及以后版本中，可通过以下方法隐藏NavigationBar

 View decorView = getWindow().getDecorView();
 // Hide both the navigation bar and the status bar.
 // SYSTEM_UI_FLAG_FULLSCREEN is only available on Android 4.1 and higher, but as
 // a general rule, you should design your app to hide the status bar whenever you
 // hide the navigation bar.
 int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
               | View.SYSTEM_UI_FLAG_FULLSCREEN;
 decorView.setSystemUiVisibility(uiOptions);

4. 隐藏所有Activity界面的标题栏

　修改AndroidManifest.xml 
　在application 标签中添加a
    android:theme="@android:style/Theme.NoTitleBar"

5. 隐藏所有Activity界面的TitleBar 和StatusBar 

　　修改AndroidManifest.xml 
　　在application 标签中添加 

　　android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

http://developer.android.com/training/system-ui/status.html#40

http://developer.android.com/training/system-ui/index.html