Android4.0平板开发之隐藏底部任务栏的方法

public static void showBar() {   try {      Process proc = Runtime.getRuntime().exec(        new String[] { "am", "startservice", "-n",          "com.android.systemui/.SystemUIService" });      proc.waitFor();    } catch (Exception e) {      e.printStackTrace();    }  }  public static void closeBar(Context context) {    try {     // 需要root 权限      Build.VERSION_CODES vc = new Build.VERSION_CODES();      Build.VERSION vr = new Build.VERSION();      String ProcID = "79"; if (vr.SDK_INT >= vc.ICE_CREAM_SANDWICH) {        ProcID = "42"; // ICS AND NEWER     }    // 需要root 权限     Process proc = Runtime.getRuntime().exec(  new String[] {         "su",         "-c",         "service call activity " + ProcID           + " s16 com.android.systemui" }); // WAS 79     proc.waitFor();    } catch (Exception ex) {      Toast.makeText(context, ex.getMessage(), Toast.LENGTH_LONG).show();    } }

<activity android:name="Demo"   android:label="@string/app_name"   android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > <intent-filter>  <action android:name="android.intent.action.MAIN" />  <category android:name="android.intent.category.LAUNCHER" /> </intent-filter></activity>

getWindow().getDecorView().setSystemUiVisibility (View.SYSTEM_UI_FLAG_LOW_PROFILE); 

getWindow().getDecorView().setSystemUiVisibility (View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);

# kill com.android.systemui# service call activity 79 s16 com.android.systemui

Process proc = Runtime.getRuntime().exec(new String[]{"su","-c","service call activity 79 s16 com.android.systemui"});proc.waitFor();Process proc = Runtime.getRuntime().exec(new String[]{"am","startservice","-n","com.android.systemui/.SystemUIService"});proc.waitFor();