//第一种 简单的方式，直接把状态栏顶掉。为透明色。

//在Activity里使用：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
    int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
    int flagTranslucentNavigation = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Window window = getWindow();
        WindowManager.LayoutParams attributes = window.getAttributes();
        attributes.flags |= flagTranslucentNavigation;
        window.setAttributes(attributes);
        getWindow().setStatusBarColor(Color.TRANSPARENT);
    } else {
        Window window = getWindow();
        WindowManager.LayoutParams attributes = window.getAttributes();
        attributes.flags |= flagTranslucentStatus | flagTranslucentNavigation;
        window.setAttributes(attributes);
    }
}

//第二种，给状态栏设置颜色，小米手机可设置状态栏文字颜色。

 //设置状态栏颜色在Activity里使用：

//因为不是所有的系统都可以设置颜色的，在4.4以下就不可以。。有的说4.1，所以在设置的时候要检查一下系统版本是否是4.1以上
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    Window window = getWindow();
    window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
    window.setStatusBarColor(getResources().getColor(R.color.Red));
}

//也可以这样设置：

SystemBarTintManager tintManager = new SystemBarTintManager(this);
tintManager.setStatusBarTintEnabled(true);
tintManager.setStatusBarTintResource(R.color.white);

//------------------------------------------------以下是小米手机给状态栏设置字体颜色------------------------------------------------
//如果你的小米手机是6.0以上的系统，那就需要加上：

this.getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN|View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);

//小米手机设置状态栏字体颜色为黑色
private void setStatusBarLightMode() {
    if (this.getWindow() != null) {
        Class clazz = this.getWindow().getClass();
        try {
            int darkModeFlag = 0;
            Class layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");
            Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");
            darkModeFlag = field.getInt(layoutParams);
            Method extraFlagField = clazz.getMethod("setExtraFlags", int.class, int.class);
            extraFlagField.invoke(this.getWindow(), darkModeFlag, darkModeFlag);//状态栏透明且黑色字体
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

//取消状态栏：

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

//设置状态栏字体颜色  第二种方式：

  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            setTranslucentStatus(true);
        }
        SystemBarTintManager tintManager = new SystemBarTintManager(this);
        tintManager.setStatusBarTintEnabled(true);
        tintManager.setStatusBarTintResource(R.color.white);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
//获取窗口区域
            Window window = getWindow();
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            //设置状态栏颜色
            window.setStatusBarColor(getColor(R.color.white));

//设置显示为白色背景，黑色字体
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        }

@TargetApi(19)
private void setTranslucentStatus(boolean on) {
    Window win = getWindow();
    WindowManager.LayoutParams winParams = win.getAttributes();
    final int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
    if (on) {
        winParams.flags |= bits;
    } else {
        winParams.flags &= ~bits;
    }
    win.setAttributes(winParams);
}

/**
 * 隐藏虚拟按键，并且全屏
 */
private void hideBottomMenu() {
    //隐藏虚拟按键，并且全屏
    if (Build.VERSION.SDK_INT < 19) {
        View v = this.getWindow().getDecorView();
        v.setSystemUiVisibility(View.GONE);
    } else {
        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);
    }
}

//--------------------------------------------------------------------完---------------------------------------------------------------------------