Question

我在我的活动代码（不是xml）中创建了系统范围的全屏叠加布局。问题是布局不占据屏幕的整个高度。顶部和底部有间隙。知道如何使布局适合整个屏幕高度吗？

mFrameLayout = new FrameLayout(this);
mFrameLayout.setBackgroundColor(getResources().getColor(R.color.black));
mFrameLayout.getBackground().setAlpha(50);

WindowManager.LayoutParams params = new WindowManager.LayoutParams(
    WindowManager.LayoutParams.FLAG_FULLSCREEN,
    WindowManager.LayoutParams.FLAG_FULLSCREEN,
    WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
    PixelFormat.TRANSLUCENT
    );
WindowManager windowManager = (WindowManager) getApplicationContext().getSystemService(WINDOW_SERVICE);
windowManager.addView(mFrameLayout, params);

Answer 1

简单地改变＆＃39; FLAG_FULLSCREEN＆＃39;到＆＃39; MATCH_PARENT＆＃39;。

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);

或者从视图中删除系统ui（Status＆amp; Nav Bar）：

    int KitKatFlags = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY 
        | View.SYSTEM_UI_FLAG_LOW_PROFILE
        | View.SYSTEM_UI_FLAG_FULLSCREEN
        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

getWindow().getDecorView().setSystemUiVisibility(KitKatFlags);

如何使系统覆盖全高度

1 个答案: