http://www.xuebuyuan.com/558284.html
方法一
public class MainActivity extends Activity { @Override 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); } }
方法二
<!-- 同时隐藏状态栏和标题栏 --> <activity 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>
方法三
<!-- 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> </style>
注:
1、方法一中的两段代码要在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。方法三应用于整个程序。
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 { @Override 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(); } @Override protected void onDestroy() { showBar(); super.onDestroy(); } /** * 关闭Android导航栏,实现全屏 */private void closeBar() { try { String command; 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() { try { String command; 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。