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)

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 4.0以上系统的平板的屏幕下方的状态栏
		 */
		try  
	    {  
	        String ProcID = "79";  
	        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) ProcID = "42"; // ICS  
	        // 需要root 权限  
	        Process proc = Runtime.getRuntime().exec(new String[] { "su", "-c", "service call activity " + ProcID + " s16 com.android.systemui" }); // WAS  
	        proc.waitFor();  
	    }  
	    catch (Exception ex)  
	    {  
	        Toast.makeText(getApplicationContext(), ex.getMessage(), Toast.LENGTH_LONG).show();  
	    }  
	}

	@Override
	protected void onDestroy()
	{
		// TODO Auto-generated method stub
		/*
		 * 恢复运行Android 4.0以上系统的平板的屏幕下方的状态栏
		 */
		try  
	    {  
	        Process proc = Runtime.getRuntime().exec(new String[] { "am", "startservice", "-n", "com.android.systemui/.SystemUIService" });  
	        proc.waitFor();  
	    }  
	    catch (Exception e)  
	    {  
	        e.printStackTrace();  
	    }  
		super.onDestroy();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu)
	{
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.startup, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item)
	{
		// TODO Auto-generated method stub
		switch (item.getItemId())
		{
			case R.id.action_exit:
				finish();
				break;
		}
		return true;
	}

}

由于没有了状态栏,须在程序中提供退出程序的方法。

http://www.xuebuyuan.com/558284.html

原文地址:https://www.cnblogs.com/Pynix/p/android.html