Android 去除状态栏和隐藏虚拟按键

//取消状态栏getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,        WindowManager.LayoutParams.FLAG_FULLSCREEN);

一定得在setContentView()上面

隐藏虚拟按键：

protected void hideBottomUIMenu() {    //隐藏虚拟按键，并且全屏    if (Build.VERSION.SDK_INT > 11 && Build.VERSION.SDK_INT < 19) { // lower api        View v = this.getWindow().getDecorView();        v.setSystemUiVisibility(View.GONE);    } else if (Build.VERSION.SDK_INT >= 19) {        //for new api versions.        View decorView = getWindow().getDecorView();        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;        decorView.setSystemUiVisibility(uiOptions);    }}

这个也可以：

public void hideNavigationBar() {        int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar                | View.SYSTEM_UI_FLAG_FULLSCREEN; // hide status bar

if (android.os.Build.VERSION.SDK_INT >= 19) {            uiFlags |= View.SYSTEM_UI_FLAG_IMMERSIVE;//0x00001000; // SYSTEM_UI_FLAG_IMMERSIVE_STICKY: hide        } else {            uiFlags |= View.SYSTEM_UI_FLAG_LOW_PROFILE;        }

try {            getWindow().getDecorView().setSystemUiVisibility(uiFlags);        } catch (Exception e) {            // TODO: handle exception        }

}