Android设置全屏的两种方法

1.在*Activity.java中

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main);       
    }

并在res->values->styles.xml中

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

2.彻底的全面屏，在*Activity.java中

@Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        View decorView = getWindow().getDecorView();
        if(hasFocus){
            decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    |View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                    |View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    |View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    |View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
        }
    }