未调用的UIApplicationDelegate方法

Question

我正在尝试创建一个用于区域监控的插件。区域监控启动正常，但函数未完成启动和didrecievelocalnotification通知未被调用。我不确定为什么会发生这种情况。

regionMonitoring.h

 #import <Foundation/Foundation.h>
    #import <CoreLocation/CoreLocation.h>


    @interface RegionMonitoringPlugin : NSObject <UIApplicationDelegate,CLLocationManagerDelegate>
    {
        CLLocationManager *locationManager; 
    }

    -(void)enterRegionNotify;
    -(void)leaveRegionNotify;
    -(void)startMonitor:(float)latitude longitude:(float)longitude radius:(float)raduis;

    @end

regionMonitoring.mm

#import "RegionMonitoringPlugin.h"

@implementation RegionMonitoringPlugin

- (id) init
{
    //if ( init == [super init]){
    if (locationManager==nil){
        locationManager = [[CLLocationManager alloc] init];
        locationManager.delegate = self;
        [locationManager setDistanceFilter:kCLDistanceFilterNone];
        [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
    }

    return self;
}

-(void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
    {
        [self enterRegionNotify];
    }

-(void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
    {
        [self leaveRegionNotify];
    }

- (void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)regionwithError:(NSError *)error
    {
        NSLog(@"Location error %@, %@", error, @"Fill in the reason here");
    }

-(void)leaveRegionNotify
{
    NSLog(@"Starting region monitoring - check point 3");

    UILocalNotification *note = [[UILocalNotification alloc] init];
    note.alertBody= @"Region Left"; // ToAsk: What should be displayed
    note.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication] presentLocalNotificationNow:note];
    [note release];

}


-(void)enterRegionNotify
{
    UILocalNotification *note = [[UILocalNotification alloc] init];
    note.alertBody= @"Region Left"; //ToAsk: what should be displayed ? 
    note.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication] presentLocalNotificationNow:note];
    [note release];

}

-(void)startMonitor:(float)latitude longitude:(float)longitude radius:(float)radius
{ 
    NSLog(@"Starting region monitoring - check point 2");
    [self leaveRegionNotify];
    CLLocationCoordinate2D home;
    home.latitude = latitude;
    home.longitude = longitude;
    CLRegion* region = [[CLRegion alloc] initCircularRegionWithCenter:home radius:radius identifier:@"region"];
    [locationManager startMonitoringForRegion:region desiredAccuracy:kCLLocationAccuracyBest];
    [region release];    
}

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification 
{ 
    NSLog(@"Starting region monitoring - checkpoint 4");

    if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive) {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Region Monitor Notification" message:notification.alertBody delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
        [alertView show]; 
        [alertView release];
    } 
}


- (BOOL)application:(UIApplication *) application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      NSLog(@"Test");
    return TRUE;
}


@end


extern "C" {
        static RegionMonitoringPlugin *regionMonitor;

        // Unity callable function to start region monitoring
        BOOL _startRegionMonitoring(float m_latitude,float m_longitude, float m_radius)
        {

            NSLog(@"Starting region monitoring");
            if (![CLLocationManager regionMonitoringAvailable] || ![CLLocationManager regionMonitoringEnabled] )
                return NO;

            if (regionMonitor == nil){
                regionMonitor = [[RegionMonitoringPlugin alloc]  init] ;
            }
            [regionMonitor startMonitor:m_latitude longitude:m_longitude radius:m_radius];
            return YES;

        }
}

插件统一代码: RegionMonitorMediater.h

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;

public class RegionMonitoringMediator {

    /*Interface to native implementation */
    [DllImport ("__Internal")]
    private static extern bool _startRegionMonitoring (float m_latitude,float m_longitude, float m_radius);

    public static bool startRegionMonitoring (float latitude,float longitude, float radius)
    {
         /*Call plugin only when running on real device*/
        if (Application.platform != RuntimePlatform.OSXEditor)
            return _startRegionMonitoring ( latitude , longitude , radius);
        else return false;

    }
}

主叫区域监听

我做的OnPress事件

bool startedRM = RegionMonitoringMediator.startRegionMonitoring(77.0f,28.0f,10.0f);

Answer 1

每个应用程序只允许一个UIApplicationDelegate。当Unity3D为iPhone player构建应用程序时，会生成一个AppController类，它充当接口。

这个类是插入代码来调用RegionMonitoringPlugin的地方。

Answer 2

init应该在开始时包含一个对super的调用：

- (id) init
{
    if (self = [super init])
    {
        // initialize everything else
    }
    return self;
}

注意，我们使用的是赋值(=)运算符，而不是比较(==)运算符。