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public class MainActivity extends Activity
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
// 隐藏标题栏
requestWindowFeature(Window.FEATURE_NO_TITLE);
// 隐藏状态栏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
&!-- 同时隐藏状态栏和标题栏 &--&
& & android:name="com.ysj.demo.MainActivity"
& & android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
& & android:label="@string/app_name" &
& & &intent-filter&
& & & & &action android:name="android.intent.action.MAIN" /&
& & & & &category android:name="android.intent.category.LAUNCHER" /&
& & &/intent-filter&
&/activity&
&!-- Application theme. --&
&style name="AppTheme" parent="AppBaseTheme"&
&!-- All customizations that are NOT specific to a particular API-level can go here. --&
&!-- 隐藏状态栏 --&
&item name="android:windowFullscreen"&true&/item&
&!-- 隐藏标题栏 --&
&item name="android:windowNoTitle"&true&/item&
1、方法一中的两段要在setContentView()之前。
2、方法二只能同时隐藏状态栏和标题栏。
3、方法一和方法二都只应用于单个Activity。方法三应用于整个。
对于运行Android 4.0以上系统的平板电脑，以上三种方法都不会隐藏屏幕下方的状态栏，须做如下处理。
public class StartupActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_startup);
* 隐藏运行Android 4.xxx系统的平板的屏幕下方的状态栏需要root权限
closeBar();
protected void onDestroy() {
showBar();
super.onDestroy();
* 关闭Android导航栏，实现全屏
private void closeBar() {
command = "LD_LIBRARY_PATH=/vendor/lib:/system/lib service call activity 42 s16 com.android.systemui";
ArrayList&String& envlist = new ArrayList&String&();
Map&String, String& env = System.getenv();
for (String envName : env.keySet()) {
envlist.add(envName + "=" + env.get(envName));
String[] envp = envlist.toArray(new String[0]);
Process proc = Runtime.getRuntime().exec(
new String[] { "su", "-c", command }, envp);
proc.waitFor();
} catch (Exception ex) {
// Toast.makeText(getApplicationContext(), ex.getMessage(),
// Toast.LENGTH_LONG).show();
* 显示导航栏
public static void showBar() {
command = "LD_LIBRARY_PATH=/vendor/lib:/system/lib am startservice -n com.android.systemui/.SystemUIService";
ArrayList&String& envlist = new ArrayList&String&();
Map&String, String& env = System.getenv();
for (String envName : env.keySet()) {
envlist.add(envName + "=" + env.get(envName));
String[] envp = envlist.toArray(new String[0]);
Process proc = Runtime.getRuntime().exec(
new String[] { "su", "-c", command }, envp);
proc.waitFor();
} catch (Exception e) {
e.printStackTrace();
由于没有了状态栏，须在程序中提供退出程序的方法。
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