Android开发检查是否开启通知栏权限

Android开发检查是否开启通知栏权限

检查通知权限很场景，几乎每个app都有。 顺便提供跳到设置里面开启通知栏

一、查询是否有通知栏权限：

@RequiresApi(api = Build.VERSION_CODES.KITKAT)
    public static boolean isNotificationEnabled(Context context) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            //8.0手机以上
            if (((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).getImportance() == NotificationManager.IMPORTANCE_NONE) {
                return false;
            }
        }

        String CHECK_OP_NO_THROW = "checkOpNoThrow";
        String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";

        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 (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

二、跳到设置里面开启通知

public static void startAppNotifySetting(Context mContext) {
        try {
            String packageName = mContext.getPackageName();
            int uid = mContext.getApplicationInfo().uid;
            Intent intent = new Intent();
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
                intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
                intent.putExtra(Settings.EXTRA_APP_PACKAGE, packageName);
                intent.putExtra(Settings.EXTRA_CHANNEL_ID, uid);
            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
                intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
                intent.putExtra("app_package", packageName);
                intent.putExtra("app_uid", uid);
            } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT){
                intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                intent.addCategory(Intent.CATEGORY_DEFAULT);
                intent.setData(Uri.fromParts("package", packageName, null));
            } else {
                intent.setAction(Settings.ACTION_SETTINGS);
            }
            mContext.startActivity(intent);
        } catch (Exception e){
            e.printStackTrace();
            Intent intent = new Intent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
            intent.setData(Uri.fromParts("package", mContext.getPackageName(), null));
            mContext.startActivity(intent);
        }

    }