跳转到应用通知设置界面 - xiaoniudonghe2015/Android-Java-Code-Style GitHub Wiki

android 检查通知是否开启代码

只有api19以上可以判断,19以下返回都是true
public static boolean isNotificationEnabled(Context context) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            return isEnableV26(context);
        } else {
            return isEnableV19(context);
        }
    }

    public static boolean isEnableV19(Context context) {
        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;

        /* Context.APP_OPS_MANAGER */
        try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                appOpsClass = Class.forName(AppOpsManager.class.getName());
            }

            Method checkOpNoThrowMethod =
                    appOpsClass.getMethod("checkOpNoThrow",
                            Integer.TYPE, Integer.TYPE, String.class);

            Field opPostNotificationValue = appOpsClass.getDeclaredField("OP_POST_NOTIFICATION");
            int value = (Integer) opPostNotificationValue.get(Integer.class);

            return ((Integer) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) ==
                    AppOpsManager.MODE_ALLOWED);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    public static boolean isEnableV26(Context context) {
        try {
            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;
        }
    }

跳转到通知页面

public static void gotoNotificationSetting(Activity activity) {
        ApplicationInfo appInfo = activity.getApplicationInfo();
        String pkg = activity.getApplicationContext().getPackageName();
        int uid = appInfo.uid;
        try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                Intent intent = new Intent();
                intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
                //**这种方案适用于 API 26, 即8.0（含8.0）以上可以用**
                intent.putExtra(Settings.EXTRA_APP_PACKAGE, pkg);
                intent.putExtra(Settings.EXTRA_CHANNEL_ID, uid);
                //**这种方案适用于 API21——25，即 5.0——7.1 之间的版本可以使用**
                intent.putExtra("app_package", pkg);
                intent.putExtra("app_uid", uid);
                activity.startActivity(intent);
            } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
                Intent intent = new Intent();
                intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                intent.addCategory(Intent.CATEGORY_DEFAULT);
                intent.setData(Uri.parse("package:" + BuildConfig.APPLICATION_ID));
                activity.startActivity(intent);
            } else {
                Intent intent = new Intent(Settings.ACTION_SETTINGS);
                activity.startActivity(intent);
            }
        } catch (Exception e) {
            Intent intent = new Intent(Settings.ACTION_SETTINGS);
            activity.startActivity(intent);
        }
    }

https://stackoverflow.com/questions/11649151/android-4-1-how-to-check-notifications-are-disabled-for-the-application