【Android 7.0 沉浸式状态栏实现！！ 】

    /**
     * 解决7.0沉浸式状态栏灰色
     */
    protected void setSystem7Gray() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            try {
                Class decorViewClazz = Class.forName("com.android.internal.policy.DecorView");
                Field field = decorViewClazz.getDeclaredField("mSemiTransparentStatusBarColor");
                field.setAccessible(true);
                field.setInt(getWindow().getDecorView(), Color.TRANSPARENT);  //改为透明
            } catch (Exception e) {
                LogUtil.e("设置7.0沉浸式状态栏失败");
            }
        }
    }

    /**
     * 设置透明导航栏
     */
    protected void setTransNavigation() {
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
            //getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);//设置透明状态栏
            //getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);//设置透明导航栏
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            //注意要清除 FLAG_TRANSLUCENT_STATUS flag
            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            getWindow().setStatusBarColor(getResources().getColor(android.R.color.transparent));
            getWindow().getDecorView().setSystemUiVisibility(/*View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | */View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        }
    }