獲取是否開啟通知許可權：

public static boolean isNotificationEnabled(Context context, NotificationManager mNotificationManager) {
    if (Build.VERSION.SDK_INT >= 24) {
        return mNotificationManager.areNotificationsEnabled();
    } else if (Build.VERSION.SDK_INT >= 19) {
        AppOpsManager appOps =
                (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
        ApplicationInfo appInfo = context.getApplicationInfo();
        String pkg = context.getApplicationContext().getPackageName();
        int uid = appInfo.uid;
        try {
            Class<?> 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);
            return ((int) checkOpNoThrowMethod.invoke(appOps, value, uid, pkg)
                    == AppOpsManager.MODE_ALLOWED);
        } catch (ClassNotFoundException | NoSuchMethodException | NoSuchFieldException
                | InvocationTargetException | IllegalAccessException | RuntimeException e) {
            return true;
        }
    } else {
        return true;
    }
}

跳轉到應用資訊頁面：

Intent localIntent = new Intent();
localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= 9) {
    localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
    localIntent.setData(Uri.fromParts("package", getPackageName(), null));
} else if (Build.VERSION.SDK_INT <= 8) {
    localIntent.setAction(Intent.ACTION_VIEW);
    localIntent.setClassName(“包名”, "com.android.settings.InstalledAppDetails");
    localIntent.putExtra("com.android.settings.ApplicationPkgName", getPackageName());
}
startActivity(localIntent);