設置導航條和狀態欄透明度效果

這是核心代碼，相信大家一看就懂了

private void initWindows() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
}
}