StatusBarUtil.transparencyBar(this); //设置状态栏全透明
StatusBarUtil.StatusBarLightMode(this); //设置白底黑字

public class StatusBarUtil {

 /**
  * 修改状态栏为全透明
  *
  * @param activity
  */
 @TargetApi(19)
 public static void transparencyBar(Activity activity) {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   Window window = activity.getWindow();
   window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
   window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
     | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
   window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
   window.setStatusBarColor(Color.TRANSPARENT);

  } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   Window window = activity.getWindow();
   window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
     WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
  }
 }

 /**
  * 状态栏亮色模式，设置状态栏黑色文字、图标，
  * 适配4.4以上版本MIUIV、Flyme和6.0以上版本其他Android
  *
  * @param activity
  * @return 1:MIUUI 2:Flyme 3:android6.0
  */
 public static int StatusBarLightMode(Activity activity) {
  int result = 0;
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   if (MIUISetStatusBarLightMode(activity, true)) {
    //小米
    result = 1;
   } else if (FlymeSetStatusBarLightMode(activity.getWindow(), true)) {
    //魅族
    result = 2;
   } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    //6.0以上
    activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
    result = 3;
   } else {
    //其他的都设置状态栏成半透明的,以下设置半透明是调用第三方的，根据个人需求更改
//    ImmersionBar.with(activity).statusBarDarkFont(true, 0.5f).init();
   }
  }
  return result;
 }

 /**
  * 设置状态栏图标为深色和魅族特定的文字风格
  * 可以用来判断是否为Flyme用户
  *
  * @param window 需要设置的窗口
  * @param dark 是否把状态栏文字及图标颜色设置为深色
  * @return boolean 成功执行返回true
  */
 public static boolean FlymeSetStatusBarLightMode(Window window, boolean dark) {
  boolean result = false;
  if (window != null) {
   try {
    WindowManager.LayoutParams lp = window.getAttributes();
    Field darkFlag = WindowManager.LayoutParams.class
      .getDeclaredField("MEIZU_FLAG_DARK_STATUS_BAR_ICON");
    Field meizuFlags = WindowManager.LayoutParams.class
      .getDeclaredField("meizuFlags");
    darkFlag.setAccessible(true);
    meizuFlags.setAccessible(true);
    int bit = darkFlag.getInt(null);
    int value = meizuFlags.getInt(lp);
    if (dark) {
     value |= bit;
    } else {
     value &= ~bit;
    }
    meizuFlags.setInt(lp, value);
    window.setAttributes(lp);
    result = true;
   } catch (Exception e) {

   }
  }
  return result;
 }

 /**
  * 需要MIUIV6以上
  *
  * @param activity
  * @param dark  是否把状态栏文字及图标颜色设置为深色
  * @return boolean 成功执行返回true
  */
 public static boolean MIUISetStatusBarLightMode(Activity activity, boolean dark) {
  boolean result = false;
  Window window = activity.getWindow();
  if (window != null) {
   Class clazz = window.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);
    if (dark) {
     extraFlagField.invoke(window, darkModeFlag, darkModeFlag);//状态栏透明且黑色字体
    } else {
     extraFlagField.invoke(window, 0, darkModeFlag);//清除黑色字体
    }
    result = true;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
     //开发版 7.7.13 及以后版本采用了系统API，旧方法无效但不会报错，所以两个方式都要加上
     if (dark) {
      activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
     } else {
      activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
     }
    }
   } catch (Exception e) {

   }
  }
  return result;
 }
}