关于这个版本8.0以上获取通知栏状态 大部分手机都ok的 主要是国产的OPPO vivo 怎么拿都是true 下面的方法是找了好久的综合解决版本  终于成功搞掉了vivo和OPPO

public static boolean isNotificationEnabled(Context context) {

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

NotificationManager manager = (NotificationManager)context. getSystemService(NOTIFICATION_SERVICE);

NotificationChannel channel = manager.getNotificationChannel(ANDROID_CHANNEL_ID);

if (channel != null){

/**

* 这里是应用总通知开关已经打开 但是你注册的单个通知开关关闭了

*/

if (channel.getImportance() == NotificationManager.IMPORTANCE_NONE) {

return false;

}else {

try {

/**

* 这是应用总通知开关关闭了

*/

ApplicationInfo appInfo = context.getApplicationInfo();

String pkg = context.getApplicationContext().getPackageName();

int uid = appInfo.uid;

NotificationManager notificationManager = (NotificationManager)

context.getSystemService(Context.NOTIFICATION_SERVICE);

Method sServiceField = notificationManager.getClass().getDeclaredMethod("getService");

sServiceField.setAccessible(true);

Object sService = sServiceField.invoke(notificationManager);

Method method = sService.getClass().getDeclaredMethod("areNotificationsEnabledForPackage"

, String.class, Integer.TYPE);

method.setAccessible(true);

return (boolean) method.invoke(sService, pkg, uid);

} catch (Exception e) {

return true;

}

}

}else {

return true;

}

}else {

AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);

ApplicationInfo appInfo = context.getApplicationInfo();

String pkg = context.getApplicationContext().getPackageName();

int uid = appInfo.uid;

Class appOpsClass = null;

try {

appOpsClass = Class.forName(AppOpsManager.class.getName());

Method checkOpNoThrowMethod =

appOpsClass.getMethod(

CHECK_OP_NO_THROW,

Integer.TYPE,

Integer.TYPE,

String.class

);

Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);

int value = (int) opPostNotificationValue.get(Integer.class);

int invoke = (int) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg);

return (invoke == AppOpsManager.MODE_ALLOWED);

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (NoSuchMethodException e) {

e.printStackTrace();

} catch (NoSuchFieldException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

}

return false;

}

}