Android 应用获取通知栏权限

工具类 NotificationsUtils：

package com.xxx.ua.utils;import android.annotation.SuppressLint;import android.app.AppOpsManager;import android.content.Context;import android.content.pm.ApplicationInfo;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;/** * Created by chitty on 2017/8/3. * 获取通知栏权限是否开启 */public class NotificationsUtils {    private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";    private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";    @SuppressLint("NewApi")    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 = (Integer) opPostNotificationValue.get(Integer.class);            return ((Integer) 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;    }}

在 Activity 中适当位置调用：

 if (NotificationsUtils.isNotificationEnabled(this)){    LogUtils.i(TAG, "--> showPromptDialog -- 通知权限 已开启 = "); }else {    LogUtils.i(TAG, "--> showPromptDialog -- 通知权限 未开启 = ");    // TODO 弹框提示用户去设置，跳转到应用信息界面 }

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