Erreichbarkeitsbenachrichtigung nie aufgerufen

Question

Es fällt mir schwer, die Erreichbarkeit in meinem Code zu verwenden. Ich möchte es sehr einfach halten, indem ich beim Start einen Beobachter initiiere und dann nur Änderungsbenachrichtigungen erhalte. Im folgenden Code wird die reachabilityChanged-Methode nie aufgerufen. Ich habe viele Wiederholungen ausprobiert, aber dies ist die einfachste Version. Es kompiliert und läuft. Bitte helfen ...

** * * AppDelegate.h Code * ** *

#import <UIKit/UIKit.h> 

#ifdef PHONEGAP_FRAMEWORK 
    #import <PhoneGap/PGViewController.h> 
    #import <PhoneGap/PGURLProtocol.h> 
    #import <PhoneGap/Reachability.h> 
#else 
    #import "PGViewController.h" 
    #import "PGURLProtocol.h" 
    #import "Reachability.h" 

#endif 

@interface AppDelegate : NSObject < UIApplicationDelegate, UIWebViewDelegate, PGCommandDelegate> { 
    NSString* invokeString; 
} 

@property (nonatomic, copy) NSString* invokeString; 
@property (nonatomic, strong) IBOutlet UIWindow* window; 
@property (nonatomic, strong) IBOutlet PGViewController* viewController; 

@end 

** * * AppDelegate.m Code-Snippet * ** *

#import "AppDelegate.h" 

#import "MainViewController.h" 

#ifdef PHONEGAP_FRAMEWORK 
    #import <PhoneGap/PGPlugin.h> 
    #import <PhoneGap/PGURLProtocol.h> 
    #import <PhoneGap/Reachability.h> 
#else 
    #import "PGPlugin.h" 
    #import "PGURLProtocol.h" 
    #import "Reachability.h" 

#endif 

@implementation AppDelegate 
@synthesize invokeString, window, viewController; 

- (void) reachabilityChanged:(NSNotification *)notice 
{ 

    NSLog(@"???????? CODE NEVER GETS HERE ??????????"); 

    Reachability *reach = [notice object]; 
    NSParameterAssert([reach isKindOfClass: [Reachability class]]); 
    NetworkStatus remoteHostStatus = [reach currentReachabilityStatus]; 

    if(remoteHostStatus == NotReachable) {NSLog(@"**** Not Reachable ****");} 
    else if (remoteHostStatus == ReachableViaWiFi) {NSLog(@"**** wifi ****"); } 
    else if (remoteHostStatus == ReachableViaWWAN) {NSLog(@"**** cell ****"); } 
} 

- (BOOL) application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions 
{  

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil]; 

    Reachability *reach = [Reachability reachabilityForInternetConnection]; 
    [reach startNotifier]; 

    NetworkStatus remoteHostStatus = [reach currentReachabilityStatus]; 

    NSLog(@”???? ALWAYS INITS WITH Not Reachable ????”); 
    if(remoteHostStatus == NotReachable) {NSLog(@"init **** Not Reachable ****");} 
    else if (remoteHostStatus == ReachableViaWiFi) {NSLog(@"int **** wifi ****"); } 
    else if (remoteHostStatus == ReachableViaWWAN) {NSLog(@"init **** cell ****"); } 

    // ... 

} 

@end 

Answer 1

Ihr Objekt Erreichbarkeits ist Autorelease so es dealloc ist und nicht mehr arbeiten.

ich versuchen, Ihren Code und es funktioniert für mich:

AppDelegate.h Code

[...] 
@property (retain, nonatomic) Reachability* reach; 
[...] 

AppDelegate.m Code-Schnipsel

[...] 
@synthesize reach; 

- (void) reachabilityChanged:(NSNotification *)notice 
{ 

    NSLog(@"!!!!!!!!!! CODE IS CALL NOW !!!!!!!!!!"); 

    NetworkStatus remoteHostStatus = [reach currentReachabilityStatus]; 

    if(remoteHostStatus == NotReachable) {NSLog(@"**** Not Reachable ****");} 
    else if (remoteHostStatus == ReachableViaWiFi) {NSLog(@"**** wifi ****"); } 
    else if (remoteHostStatus == ReachableViaWWAN) {NSLog(@"**** cell ****"); } 
} 

- (BOOL) application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions 
{  

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil]; 

    self.reach = [Reachability reachabilityForInternetConnection]; //retain reach 
    [reach startNotifier]; 

    NetworkStatus remoteHostStatus = [reach currentReachabilityStatus]; 

    NSLog(@"???? ALWAYS INITS WITH Not Reachable ????"); 
    if(remoteHostStatus == NotReachable) {NSLog(@"init **** Not Reachable ****");} 
    else if (remoteHostStatus == ReachableViaWiFi) {NSLog(@"int **** wifi ****"); } 
    else if (remoteHostStatus == ReachableViaWWAN) {NSLog(@"init **** cell ****"); } 

    // ... 

} 

[...] 
-(void)dealloc{ 
    [reach release]; 
    [super dealloc]; 
} 

@end