Android全屏(包含3种隐藏顶部状态栏及标题栏和一种隐藏Android 4.0平板底部状态栏的方法)
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。


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