突破 oppo等手机安装软件后通知权限默认关闭的问题

先说场景，公司在app上集成推送功能，可是在OPPO手机上一直接收不到推送消息，debug一下发现推送消息可以接受到但是没有吊起通知栏。去设置一看通知栏没给权限。又去oppo开放平台咨询，oppo官方回答如下

咋办呢。。。。。。

首先想到是不是和运行时权限一样，用到时申请一下呢，便尝试了以下方法。

方案一：

通过反射检查通知是否打开，没打开便去申请。

package com.example.jpushdemo;import android.app.AppOpsManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.net.Uri;
import android.provider.Settings;import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;/***/
public class NotificationsUtils {private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";//检测 通知状态 是否已打开public static boolean isNotificationEnabled(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 {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(mAppOps, value, uid, pkg) ==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;}/*** 跳转设置页面 去设置通知权限* @param context*/public static void toNotificationSetting(Context context) {if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {Intent intent = new Intent();intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");intent.putExtra("app_package", context.getApplicationContext().getPackageName());intent.putExtra("app_uid", context.getApplicationInfo().uid);context.startActivity(intent);} else if (android.os.Build.VERSION.SDK_INT == android.os.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:" + context.getApplicationContext().getPackageName()));context.startActivity(intent);}}
}