与NSUserDefaults的QUOT;暂停＆QUOT; /崩溃iOS8上 [英] NSUserDefaults "Pause" / Crash on iOS8

问题描述

好了，我上周推出一个应用程序iOS8上出来之前。一切工作正常在iOS7及以下。但现在因为人们已经更新到iOS8上我的应用程序被暂停/崩溃没有理由。

我来而言，这是当我设置一个NSMutableArray到NSUserDefaults的，它会暂停。

请注意，是NSMutableArray里的NSString的数组。

但（这是奇怪的），如果我断点通过$ C $跳过步骤c它的工作原理和我没有得到任何的停顿。

下面是它吹起来的功能...

   - （无效）UpdateMyAgenda：（* NSString的）的SessionID删除：（BOOL）{删除如果（！删除）{
    //不要删除    * NSUserDefaults的preFS = [NSUserDefaults的standardUserDefaults]
    _MyAgenda = [[NSMutableArray里的alloc]初始化];
    _MyAgenda = [preFS mutableArrayValueForKey：@MyAgenda];    [_MyAgenda ADDOBJECT：的SessionID];    [preFS的setObject：_MyAgenda forKey：@MyAgenda];    [preFS同步]。}其他{
    //去掉    * NSUserDefaults的preFS = [NSUserDefaults的standardUserDefaults]    _MyAgenda = [[NSMutableArray里的alloc]初始化];
    _MyAgenda = [preFS mutableArrayValueForKey：@MyAgenda];    [_MyAgenda的removeObject：的SessionID];    [preFS的setObject：_MyAgenda forKey：@MyAgenda];    [preFS同步]。}对于（的NSString *在_MyAgenda项）{
    的NSLog（@％@，项目）;
}的NSLog（@-----------）;
}
 

解决方案

好了，所以这里的交易，或者现在​​修复。它看起来像设置在播放器preFS一个可变数组是打破，但设置一个NSArray是没有的。

所以你的数组转换为一个可变的，添加对象，那么你的可变数组转换为一个NSArray，然后设置用户默认设置。

下面是一个例子....

  * NSUserDefaults的preFS = [NSUserDefaults的standardUserDefaults]
    NSArray的* ARR = preFS arrayForKey：@MyAgenda];    _MyAgenda = [NSMutableArray的arrayWithArray：ARR];
    [_MyAgenda ADDOBJECT：的SessionID];    ARR = [NSArray的arrayWithArray：_MyAgenda];    [preFS的setObject：ARR forKey：@MyAgenda];
    [preFS同步]。
 

Ok, so I launched an app last week before iOS8 came out. Everything was working fine in iOS7 and below. But now since people have updated to iOS8 my app is pausing/crashing for no reason.

I came to terms that it is when I set an NSMutableArray to the NSUserDefaults, it pauses.

Please note, the NSMutableArray is an array of NSStrings.

BUT (this is weird) if I breakpoint skip through the code it works and I get no pause.

Here is the function that it is blowing up...

-(void)UpdateMyAgenda:(NSString*)SessionID Remove:(BOOL)Remove{

if(!Remove){
    //Do not Remove

    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];


    _MyAgenda = [[NSMutableArray alloc]init];
    _MyAgenda = [prefs mutableArrayValueForKey:@"MyAgenda"];

    [_MyAgenda addObject:SessionID];

    [prefs setObject:_MyAgenda forKey:@"MyAgenda"];

    [prefs synchronize];

}else{
    //Remove

    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];

    _MyAgenda = [[NSMutableArray alloc]init];
    _MyAgenda = [prefs mutableArrayValueForKey:@"MyAgenda"];

    [_MyAgenda removeObject:SessionID];

    [prefs setObject:_MyAgenda forKey:@"MyAgenda"];

    [prefs synchronize];

}

for (NSString *item in _MyAgenda) {
    NSLog(@"%@", item);
}

NSLog(@"-----------");
}

解决方案

Ok so here is the deal, or a fix for now. It looks like setting a mutable array in the player prefs is breaking, but setting an NSArray is not.

So convert your array to a mutable one, add the object, then convert your mutable array to an nsarray and then set the user default.

Here is an example....

    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    NSArray *arr = [prefs arrayForKey:@"MyAgenda"];

    _MyAgenda = [NSMutableArray arrayWithArray:arr];
    [_MyAgenda addObject:SessionID];

    arr = [NSArray arrayWithArray:_MyAgenda];

    [prefs setObject:arr forKey:@"MyAgenda"];
    [prefs synchronize];

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