iOS 错误锦集
从今天开始，我打算把自己所有遇到的错误，无论大大小小，都保存下来，以供自己反思，少点粗心才能提高效率
1、This application is modifying the autolayout engine from a background thread after the engine was accessed from the main thread. This can lead to engine corruption and weird crashes.
2017-12-20 21:29:03.954058+0800 SwiftLive[3749:2123191] This application is modifying the autolayout engine from a background thread after the engine was accessed from the main thread. This can lead to engine corruption and weird crashes.
Stack:(
0 CoreFoundation 0x000000018cbbaff8 + 148
1 libobjc.A.dylib 0x000000018b61c538 objc_exception_throw + 56
2 CoreFoundation 0x000000018cbbaf28 + 0
3 Foundation 0x000000018d7ad378 + 128
4 Foundation 0x000000018d7ad0f8 + 76
5 Foundation 0x000000018d5f9b48 + 132
6 Foundation 0x000000018d7abd80 + 112
7 UIKit 0x0000000192ce9eac + 1692
8 QuartzCore 0x000000018feda274 + 148
9 UIKit 0x000000019333a234 + 64
10 QuartzCore 0x000000018fecede8 + 292
11 QuartzCore 0x000000018fececa8 + 32
12 QuartzCore 0x000000018fe4a34c + 252
13 QuartzCore 0x000000018fe713ac + 504
14 QuartzCore 0x000000018fe716d8 + 244
15 libsystem_pthread.dylib 0x000000018bc7be20 + 572
16 libsystem_pthread.dylib 0x000000018bc7bb48 + 200
17 libsystem_pthread.dylib 0x000000018bc7b1d8 _pthread_wqthread + 1312
18 libsystem_pthread.dylib 0x000000018bc7acac start_wqthread + 4
) 从上面的报错信息可以看出，线程在运行的时候子线程修改了主线程UI的布局约束，在iOS开发中，所有的有关界面UI的更新操作必须要在主线程中完成。
在需要的时候，加上下面这句吧：
dispatch_async(dispatch_get_main_queue(), ^{
//inset code....
});
2、attempting to add unsupported attribute: (null)
2017-12-22 16:31:25.357 SwiftLive[3878:2402908] : [BLYLog] Trapped uncaught exception 'NSInternalInconsistencyException', reason: 'attempting to add unsupported attribute: (null)'
(
0 CoreFoundation 0x000000018cbbaff8 + 148
1 libobjc.A.dylib 0x000000018b61c538 objc_exception_throw + 56
2 CoreFoundation 0x000000018cbbaeb4 + 0
3 Foundation 0x000000018d653760 + 112
4 SwiftLive 0x00000001007c47d0 -[MASViewConstraint setSecondViewAttribute:] + 772
5 SwiftLive 0x00000001007c5730 __40-[MASViewConstraint equalToWithRelation]_block_invoke + 1756
6 SwiftLive 0x00000001007be424 __24-[MASConstraint equalTo]_block_invoke + 100
7 SwiftLive 0x000000010017741c __29-[FLGiftSendView configureUI]_block_invoke.66 + 516
8 SwiftLive 0x00000001007cbfd8 -[UIView(MASAdditions) mas_makeConstraints:] + 132
9 SwiftLive 0x0000000100175b7c -[FLGiftSendView configureUI] + 752
10 SwiftLive 0x00000001001757c4 -[FLGiftSendView initWithFrame:] + 332
11 SwiftLive 0x000000010045eb2c -[FLChooseGiftsView setupUI] + 3680
12 SwiftLive 0x000000010045dbb4 -[FLChooseGiftsView init] + 136
13 SwiftLive 0x0000000100291570 -[FLLiveMainInterfaceViewController setupContentView] + 4680
14 SwiftLive 0x000000010028f3bc -[FLLiveMainInterfaceViewController setupUI] + 2708
15 SwiftLive 0x00000001002881e0 -[FLLiveMainInterfaceViewController viewDidLoad] + 344
16 UIKit 0x0000000192cecb04 + 1036
17 UIKit 0x0000000192d04590 + 132
18 UIKit 0x0000000192e88e18 + 1144
19 UIKit 0x0000000192da37bc + 676
20 UIKit 0x0000000192da3424 + 64
21 UIKit 0x0000000192da3388 + 188
22 UIKit 0x0000000192ce9cc0 + 1200
23 QuartzCore 0x000000018feda274 + 148
24 QuartzCore 0x000000018fecede8 + 292
25 QuartzCore 0x000000018fececa8 + 32
26 QuartzCore 0x000000018fe4a34c + 252
27 QuartzCore 0x000000018fe713ac + 504
28 QuartzCore 0x000000018fe71e78 + 120
29 CoreFoundation 0x000000018cb689a8 + 32
30 CoreFoundation 0x000000018cb66630 + 372
31 CoreFoundation 0x000000018cb66a7c + 956
32 CoreFoundation 0x000000018ca96da4 CFRunLoopRunSpecific + 424
33 GraphicsServices 0x000000018e501074 GSEventRunModal + 100
34 UIKit 0x0000000192d51c9c UIApplicationMain + 208
35 SwiftLive 0x0000000100437dd8 main + 312
36 libdyld.dylib 0x000000018baa559c + 4
) 从上面的报错信息，没有什么意外,就是上一个控件布局有问题,或者是布局的顺序有问题，也有可能是约束冲突，或者约束不全。
使用Masonry要注意约束的完整性。否则就会出现上述报错。
3、今天很坑的一个事情，我想写一个不固定高度的View，View里面放一些控件,我还要给View描边，整个布局布局好以后，发现View里面的控件没有出来,然后我各种看小面包，左边显示控件是存在的，右边的界面却和真机一样没有出来，苦了我又是设置背景颜色调试，又是各种检查布局的，下面是我布局的代码：
约束检查了一遍又一遍，还是没有任何思路，这里要感谢师父一直给我提示，给我一些调试的方法，我就感觉，应该还是布局的问题，于是我改了如下代码：
我将
make.height.mas_lessThanOrEqualTo(33 * ScreenHeightRatio);
make.height.mas_equalTo(33 * ScreenHeightRatio);结果就可以了，说明用masorny布局，不确定高度的View，是不可以描边等操作的，会出现一系列的问题，可怜我太菜，这个问题调试了很久
4、关于IOS开发之关于UIButton点击没有响应问题
在做UI界面的时候，确认butten 是最后添加的呀，但是，怎么就不响应点击方法呢？小面包查了一遍又一遍，真的是粗心误大事，
感谢在网上找到的资料，保存一下：
1、如果一个UIButton的frame超出父视图的frame，UIButton还是可以显现的，但响应不了点击事件了，当开发中，遇到UIButton点击没有响应问题时，我们需要输出btn及它父视图的frame，看看btn.frame是否超出view
2、还可以通过Debug--->View Debugging--->show ViewFrames查看按钮上层是否有透明视图。
我的是第一种：UIButten控件大小超出了父控件的大小，所以响应不了点击事件了。
5、-[__NSCFDictionary length]: unrecognized selector sent to instance 0x171c60980'
出错在类型上面，我定义的是nsnumber类型，而拿到的是后天返回的是nsstring类型，直接赋值了，小白果然效率低，哎。。。。。。。。。。
2017-12-23 19:29:41.451 SwiftLive[4057:2610494] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary length]: unrecognized selector sent to instance 0x171c60980'
(
0 CoreFoundation 0x000000018cbbaff8 + 148
1 libobjc.A.dylib 0x000000018b61c538 objc_exception_throw + 56
2 CoreFoundation 0x000000018cbc1ef4 + 0
3 CoreFoundation 0x000000018cbbef54 + 916
4 CoreFoundation 0x000000018cabad4c _CF_forwarding_prep_0 + 92
5 UIKit 0x0000000192cf66c8 + 312
6 SwiftLive 0x000000010014f574 -[FLGiftSendView tableView:didSelectRowAtIndexPath:] + 900
7 UIKit 0x0000000192e17a9c + 1200
8 UIKit 0x0000000192ec7820 + 268
9 UIKit 0x0000000192f79594 + 292
10 UIKit 0x0000000192f6b630 + 528
11 UIKit 0x0000000192cdf28c + 132
12 CoreFoundation 0x000000018cb689a8 + 32
13 CoreFoundation 0x000000018cb66630 + 372
14 CoreFoundation 0x000000018cb66a7c + 956
15 CoreFoundation 0x000000018ca96da4 CFRunLoopRunSpecific + 424
16 GraphicsServices 0x000000018e501074 GSEventRunModal + 100
17 UIKit 0x0000000192d51c9c UIApplicationMain + 208
18 SwiftLive 0x000000010040ba24 main + 312
19 libdyld.dylib 0x000000018baa559c + 4
) 解决：NSString 转 NSNumber ：
lastSeletNum = @([self.comeShowArray[indexPath.row][@"gift_num"] integerValue]);6、不能同时比较：
我将一个string类型的字符串转换成int 类型，然后对齐比较大小，结果报了如下警告：
Comparison of constant 10 with boolean expression is always true
呼呼，不开森，iOS不能同时比较耶，要用&& 链接去比较
错误的代码如下：
if (1 <= [listModle.liver_grade integerValue] <= 10) {
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel1_10"];
}else if (11 <= [listModle.liver_grade integerValue] <= 20){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel11_20"];
}else if (21 <= [listModle.liver_grade integerValue] <= 30){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel21_30"];
}else if (31 <= [listModle.liver_grade integerValue] <= 40){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel31_40"];
}else if (41 <= [listModle.liver_grade integerValue] <= 50){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel41_50"];
}正确的代码如下：
NSInteger grade = [listModle.liver_grade integerValue];
if (1 <= grade && grade <= 10) {
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel1_10"];
}else if (11 <= grade && grade <= 20){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel11_20"];
}else if (21 <= grade && grade <= 30){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel21_30"];
}else if (31 <= grade && grade <= 40){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel31_40"];
}else if (41 <= grade && grade <= 50){
self.popularityImg.image = [UIImage imageNamed:@"icon_little_anchorlevel41_50"];
}7、应用在iPhone5 iPhone5s 上不全屏，上下各有黑块
在网上找到如下原因：
a、 没有添加适配iPhone的 640 * 1136 分辨率的图片
b、
整个工程中，有没有一个地方在设置画面高度时候使用了固定值480或568等，一般都是直接获取屏幕大小，然后再设置画面大小的。
c、如果用的有xib，就在xib里面设置一下view的自动布局；如果用的是纯代码，就手动设置UIView的autoLayout
d、UI给的图片有问题，或者自己没有把图片的位置放好
我就是属于第四种，各种办法试了试，如下配置正确：
启动图也都有：
结果就是有如下问题：
我就把启动图都删了，换上上家公司的启动图片，结果没有问题，所有就是现在UI给的启动图有问题喽，让UI重新学习iOS启动图切图，放上，就木有问题啦！
8、CollectionView 上拉加载更多 刷新闪屏
在网上找了很多方法，不过好像并没有特别有用，最后采取的办法有如下几种，不过都感觉效果一般，先记下来，后面再试试：
方法一：
[UIView setAnimationsEnabled:NO];
[collectionView performBatchUpdates:^{
[collectionView reloadData];
} completion:^(BOOL finished) {
[UIView setAnimationsEnabled:YES];
}];方法二：
[UIView animateWithDuration:0 animations:^{
[collectionView performBatchUpdates:^{
[collectionView reloadData];
} completion:nil];
}];注意：performBatchUpdates 这个方法是collectionView原来有数据的时候，上拉刷新才能用，第一次 reloaData 就调用这个方法，会崩溃的呦 QAQ
方法三：
NSMutableArray*indexPaths = [[NSMutableArray alloc] init];
for ( inti =0; i < model.mediumArr.count; i ++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow: self.dataSource.count+ i in Section: 0];
[indexPaths addObject: indexPath];
}
[self.dataSource addObjectsFromArray: model.mediumArr];
[self.collectionView insertItemsAtIndexPaths: indexPaths];
[UIView performWithoutAnimation:^{
[self.collectionView reloadItemsAtIndexPaths: indexPaths];
}];注：model.mediumArr为加载进来的新数据源,也就是上啦加载出来的数据(数组)
具体想用哪个方法，自己试试看看拿个更好一些，后面找到更好的方法，会持续更新
9、图片填充方式：
1、UIViewContentModeScaleAspectFit, //这个图片都会在view里面显示，并且比例不变 这就是说 如果图片和view的比例不一样 就会有留白
2、UIViewContentModeScaleAspectFill, // 这是整个view会被图片填满，图片比例不变 ，这样图片显示就会大于view
3、Scale to Fill: 缩放图片,使图片充满容器。没有aspect，图片未必保持长宽比例协调，有可能会拉伸至变形。
4、
UIViewContentModeCenter 中间为中心
5、UIViewContentModeTop 以上面为主
6、UIViewContentModeBottom 以下面为主
7、UIViewContentModeLeft 以左边为主
8、UIViewContentModeRight
9、UIViewContentModeTopLeft
10、UIViewContentModeTopRight
11、UIViewContentModeBottomLeft
12、UIViewContentModeBottomRight
13、UIViewContentModeLeft
14、UIViewContentModeLeft
15、UIViewContentModeLeft
10、'-[__NSCFString objectForKeyedSubscript:]: unrecognized selector sent to instance 0x102288570'
报错信息如下：
2017-12-28 19:38:14.259 SwiftLive[1327:1606209] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectForKeyedSubscript:]: unrecognized selector sent to instance 0x102288570'
(
0 CoreFoundation 0x0000000186d461d8 + 148
1 libobjc.A.dylib 0x000000018578055c objc_exception_throw + 56
2 CoreFoundation 0x0000000186d4d278 + 0
3 CoreFoundation 0x0000000186d4a278 + 916
4 CoreFoundation 0x0000000186c4459c _CF_forwarding_prep_0 + 92
5 SwiftLive 0x00000001001a1e3c -[FLAttentionViewController collectionView:didSelectItemAtIndexPath:] + 476
6 UIKit 0x000000018cdb9ad4 + 596
7 UIKit 0x000000018cdb9468 + 596
8 UIKit 0x000000018cd34e84 + 336
9 UIKit 0x000000018cd7f500 + 60
10 UIKit 0x000000018cd34e84 + 336
11 UIKit 0x000000018cd7f500 + 60
12 UIKit 0x000000018cd34e84 + 336
13 UIKit 0x000000018cd7f500 + 60
14 UIKit 0x000000018d166c90 + 4484
15 UIKit 0x000000018d162d28 + 1164
16 UIKit 0x000000018d162848 + 408
17 UIKit 0x000000018d161b04 + 268
18 UIKit 0x000000018cbd0a44 + 2960
19 UIKit 0x000000018cba152c + 340
20 UIKit 0x000000018d38ea54 + 2736
21 UIKit 0x000000018d3884bc + 784
22 CoreFoundation 0x0000000186cf4278 + 24
23 CoreFoundation 0x0000000186cf3bc0 + 524
24 CoreFoundation 0x0000000186cf17c0 + 804
25 CoreFoundation 0x0000000186c20048 CFRunLoopRunSpecific + 444
26 GraphicsServices 0x00000001886a6198 GSEventRunModal + 180
27 UIKit 0x000000018cc0c2fc + 684
28 UIKit 0x000000018cc07034 UIApplicationMain + 208
29 SwiftLive 0x000000010037b6d0 main + 312
30 libdyld.dylib 0x0000000185c045b8 + 4
) 刚一开始看，以为是数据解析错误，但是明明是看着打印出的数据解析的，没有问题啊，郁闷的宝宝又去找师傅，师父说，肯定是你没字典转模型啊
确实，后台返的数组里面嵌套有字典，然后忘了写：
- (void)setValue:(id)value forKey:(NSString *)key
{
if ([key isEqualToString:@"live_info"])
{
[super setValue:value forKey:key];
}else
{
NSString *string = [NSString stringWithFormat:@"%@", value];
[super setValue:string forKey:key];
}
}师父果然腻害，笨笨的我，总是丢三落四
11、大家新年快乐，今天继续上班，遇到了一个小小的问题：
*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil
2018-01-02 14:43:32.923 SwiftLive[1046:427525] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil'
(
0 CoreFoundation 0x0000000181f2aff8 + 148
1 libobjc.A.dylib 0x000000018098c538 objc_exception_throw + 56
2 CoreFoundation 0x0000000181e0c898 CFStringConvertNSStringEncodingToEncoding + 0
3 SwiftLive 0x000000010018e110 -[FLRefreshHeaderView imagesArr] + 336
4 SwiftLive 0x000000010018e684 -[FLRefreshHeaderView setRefreshState:] + 60
5 SwiftLive 0x000000010018da74 -[FLRefreshHeaderView refreshView] + 792
6 SwiftLive 0x000000010018f178 -[FLRefreshHeaderView setState:] + 1516
7 SwiftLive 0x00000001007c1aa0 -[MJRefreshComponent initWithFrame:] + 200
8 SwiftLive 0x000000010018d700 -[FLRefreshHeaderView init] + 76
9 SwiftLive 0x00000001007c524c +[MJRefreshHeader headerWithRefreshingTarget:refreshingAction:] + 92
10 SwiftLive 0x000000010021bd20 -[FLLiveListViewController setUpRefreshView] + 88
11 SwiftLive 0x000000010021bb40 -[FLLiveListViewController viewDidLoad] + 876
12 UIKit 0x000000018805cb04 + 1036
13 UIKit 0x000000018805c6e0 + 28
14 SwiftLive 0x000000010012b0ec -[FLHomeViewController collectionView:cellForItemAtIndexPath:] + 436
15 UIKit 0x00000001889564a0 + 448
16 UIKit 0x00000001880bd3f0 + 3820
17 UIKit 0x00000001880b8018 + 300
18 UIKit 0x0000000188059cc0 + 1200
19 QuartzCore 0x000000018524a274 + 148
20 QuartzCore 0x000000018523ede8 + 292
21 QuartzCore 0x000000018523eca8 + 32
22 QuartzCore 0x00000001851ba34c + 252
23 QuartzCore 0x00000001851e13ac + 504
24 UIKit 0x00000001882f4840 + 140
25 CoreFoundation 0x0000000181ed930c + 20
26 CoreFoundation 0x0000000181ed8b28 + 288
27 CoreFoundation 0x0000000181ed6998 + 728
28 CoreFoundation 0x0000000181e06da4 CFRunLoopRunSpecific + 424
29 GraphicsServices 0x0000000183871074 GSEventRunModal + 100
30 UIKit 0x00000001880c1c9c UIApplicationMain + 208
31 SwiftLive 0x000000010044771c main + 312
32 libdyld.dylib 0x0000000180e1559c + 4
) 这个出错的原因主要是，我们的一个帧动画需要替换，UI直接用我原来的图的名称命名的，便于我替换，不过帧的多少是不一样的，我把图片直接拉进去，代码里面的帧数改了，多余的帧的图片却忘记拉进项目，找不到对应的图，自然崩溃
12、-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000643
2018-01-03 14:39:38.703 SwiftLive[1681:2148751] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000643'
(
0 CoreFoundation 0x0000000186d461d8 + 148
1 libobjc.A.dylib 0x000000018578055c objc_exception_throw + 56
2 CoreFoundation 0x0000000186d4d278 + 0
3 CoreFoundation 0x0000000186d4a278 + 916
4 CoreFoundation 0x0000000186c4459c _CF_forwarding_prep_0 + 92
5 UIKit 0x000000018cbab7bc + 108
6 UIKit 0x000000018cbab6b4 + 128
7 UIKit 0x000000018cca1afc + 96
8 UIKit 0x000000018cca18f0 + 52
9 UIKit 0x000000018cca1458 + 488
10 UIKit 0x000000018d4f3b78 + 76
11 UIKit 0x000000018d4f289c + 192
12 UIKit 0x000000018d4f2be4 + 632
13 UIKit 0x000000018d4f2b6c + 512
14 UIKit 0x000000018d4f2b6c + 512
15 UIKit 0x000000018d4f2b6c + 512
16 UIKit 0x000000018d4f2b6c + 512
17 UIKit 0x000000018d4f2b6c + 512
18 UIKit 0x000000018d4f2b6c + 512
19 Foundation 0x0000000187775480 + 168
20 UIKit 0x000000018d4f338c + 84
21 UIKit 0x000000018d4f254c + 136
22 UIKit 0x000000018d4f2f94 + 164
23 UIKit 0x000000018d4f3f00 + 364
24 UIKit 0x000000018ce9add4 + 180
25 UIKit 0x000000018cb9e220 + 1196
26 QuartzCore 0x000000018a05e188 + 148
27 QuartzCore 0x000000018a052e64 + 292
28 QuartzCore 0x000000018a052d24 + 32
29 QuartzCore 0x0000000189fcf7ec + 252
30 QuartzCore 0x0000000189ff6c58 + 512
31 QuartzCore 0x0000000189ff7678 + 120
32 CoreFoundation 0x0000000186cf37dc + 32
33 CoreFoundation 0x0000000186cf140c + 372
34 CoreFoundation 0x0000000186cf189c + 1024
35 CoreFoundation 0x0000000186c20048 CFRunLoopRunSpecific + 444
36 GraphicsServices 0x00000001886a6198 GSEventRunModal + 180
37 UIKit 0x000000018cc0c2fc + 684
38 UIKit 0x000000018cc07034 UIApplicationMain + 208
39 SwiftLive 0x00000001003f7454 main + 312
40 libdyld.dylib 0x0000000185c045b8 + 4
) 每次从后台拿到值的时候，总忘判断后天传过来的值的类型，呢，又出错了，后台的给我的是长整型的变量，我赋值给了string类型。
13、the view returned from -collectionView:viewForSupplementaryElementOfKind:atIndexPath (UICollectionElementKindSectionHeader, {length = 2, path = 0 - 0}) was not retrieved by calling -dequeueReusableSupplementaryViewOfKind:withReuseIdentifier:forIndexPath: or is nil ((null))
2018-01-03 16:00:21.895 SwiftLive[1712:2166430] : [BLYLog] Trapped uncaught exception 'NSInternalInconsistencyException', reason: 'the view returned from -collectionView:viewForSupplementaryElementOfKind:atIndexPath (UICollectionElementKindSectionHeader, {length = 2, path = 0 - 0}) was not retrieved by calling -dequeueReusableSupplementaryViewOfKind:withReuseIdentifier:forIndexPath: or is nil ((null))'
(
0 CoreFoundation 0x0000000186d461d8 + 148
1 libobjc.A.dylib 0x000000018578055c objc_exception_throw + 56
2 CoreFoundation 0x0000000186d46094 + 0
3 Foundation 0x00000001877d379c + 112
4 UIKit 0x000000018cd24044 + 932
5 UIKit 0x000000018cc02678 + 3868
6 UIKit 0x000000018cbfd0a4 + 288
7 UIKit 0x000000018cb9e220 + 1196
8 QuartzCore 0x000000018a05e188 + 148
9 QuartzCore 0x000000018a052e64 + 292
10 QuartzCore 0x000000018a052d24 + 32
11 QuartzCore 0x0000000189fcf7ec + 252
12 QuartzCore 0x0000000189ff6c58 + 512
13 QuartzCore 0x0000000189ff7678 + 120
14 CoreFoundation 0x0000000186cf37dc + 32
15 CoreFoundation 0x0000000186cf140c + 372
16 CoreFoundation 0x0000000186cf189c + 1024
17 CoreFoundation 0x0000000186c20048 CFRunLoopRunSpecific + 444
18 GraphicsServices 0x00000001886a6198 GSEventRunModal + 180
19 UIKit 0x000000018cc0c2fc + 684
20 UIKit 0x000000018cc07034 UIApplicationMain + 208
21 SwiftLive 0x0000000100397478 main + 312
22 libdyld.dylib 0x0000000185c045b8 + 4
) 14、-[__NSSingleObjectArrayI objectForKey:]: unrecognized selector sent to instance 0x174011cd0
2018-01-03 16:12:37.485 SwiftLive[1725:2170098] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSSingleObjectArrayI objectForKey:]: unrecognized selector sent to instance 0x174011cd0'
(
0 CoreFoundation 0x0000000186d461d8 + 148
1 libobjc.A.dylib 0x000000018578055c objc_exception_throw + 56
2 CoreFoundation 0x0000000186d4d278 + 0
3 CoreFoundation 0x0000000186d4a278 + 916
4 CoreFoundation 0x0000000186c4459c _CF_forwarding_prep_0 + 92
5 Foundation 0x00000001877ea800 + 212
6 SwiftLive 0x000000010036ac88 -[FLDiscoveryViewController dealRequestDataErrorWithOffset:] + 1092
7 SwiftLive 0x000000010036a5c4 -[FLDiscoveryViewController refreshData] + 404
8 SwiftLive 0x00000001006eac0c __47-[MJRefreshComponent executeRefreshingCallback]_block_invoke + 372
9 libdispatch.dylib 0x0000000101f1925c _dispatch_call_block_and_release + 24
10 libdispatch.dylib 0x0000000101f1921c _dispatch_client_callout + 16
11 libdispatch.dylib 0x0000000101f1e284 _dispatch_main_queue_callback_4CF + 1200
12 CoreFoundation 0x0000000186cf3f2c + 12
13 CoreFoundation 0x0000000186cf1b18 + 1660
14 CoreFoundation 0x0000000186c20048 CFRunLoopRunSpecific + 444
15 GraphicsServices 0x00000001886a6198 GSEventRunModal + 180
16 UIKit 0x000000018cc0c2fc + 684
17 UIKit 0x000000018cc07034 UIApplicationMain + 208
18 SwiftLive 0x000000010036f4a0 main + 312
19 libdyld.dylib 0x0000000185c045b8 + 4
)
字典：
{
avatar = "http://tx-upload.hk.ufileos.com/c229b79525a8a1e276d8e7c6817aab26.jpg";
"avatar_small" = "http://tx-upload.hk.ufileos.com/cca6661843afcd4953539a0dc220da50.jpg";
country = "";
"create_time" = 1514957449;
"current_count" = 0;
"end_time" = 0;
gender = 0;
"great_sort" = 0;
"hls_endpoint" = "http://hls.ylive.avazuinc.com:9090/hls/av3598/index.m3u8";
"hot_sort" = 0;
"like_sort" = 0;
"live_id" = 3598;
"live_pic" = "";
"liver_exp" = 208080;
"liver_grade" = 4;
"liver_next_exp" = 319300;
"new_sort" = 0;
nick = test123;
"people_count" = 300;
signature = "";
status = 2;
"streaming_endpoint" = "rtmp://source.publish.olivestream.tv/live/av3598";
title = "test123 on live";
uid = 828;
"update_time" = 1514957449;
"viewing_endpoint" = "http://rtmp.pull.olivestream.tv/live/av3598.flv";
}数组：
(
{
avatar = "http://tx-upload.hk.ufileos.com/c229b79525a8a1e276d8e7c6817aab26.jpg";
"avatar_small" = "http://tx-upload.hk.ufileos.com/cca6661843afcd4953539a0dc220da50.jpg";
country = "";
"create_time" = 1514957449;
"current_count" = 0;
"end_time" = 0;
gender = 0;
"great_sort" = 0;
"hls_endpoint" = "http://hls.ylive.avazuinc.com:9090/hls/av3598/index.m3u8";
"hot_sort" = 0;
"like_sort" = 0;
"live_id" = 3598;
"live_pic" = "";
"liver_exp" = 208080;
"liver_grade" = 4;
"liver_next_exp" = 319300;
"new_sort" = 0;
nick = test123;
"people_count" = 300;
signature = "";
status = 2;
"streaming_endpoint" = "rtmp://source.publish.olivestream.tv/live/av3598";
title = "test123 on live";
uid = 828;
"update_time" = 1514957449;
"viewing_endpoint" = "http://rtmp.pull.olivestream.tv/live/av3598.flv";
}
)
原来代码如下：
感谢师父告诉我，这样是不对滴，
改成
感谢师父！
timeoutInterval 已经没有了作用。不管是同步还是异步。
这个问题只有在3.0以及之后的os中才有的，而且只有在当调用了setHTTPBody之后才会出现timeout失效。这个是苹果公司对URL Loading System的在iOS3.0中的一个改动,所有要改代码：
[request setTimeoutInterval:10.0f];改成
[self.manager.requestSerializer setTimeoutInterval:10.0f];感谢师父！
16、-[__NSCFNumber boundingRectWithSize:options:attributes:context:]: unrecognized selector sent to instance 0xb000000000d33a13
2018-01-04 21:03:39.929 SwiftLive[1935:2427284] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber boundingRectWithSize:options:attributes:context:]: unrecognized selector sent to instance 0xb000000000d33a13'
(
0 CoreFoundation 0x0000000186d461d8 + 148
1 libobjc.A.dylib 0x000000018578055c objc_exception_throw + 56
2 CoreFoundation 0x0000000186d4d278 + 0
3 CoreFoundation 0x0000000186d4a278 + 916
4 CoreFoundation 0x0000000186c4459c _CF_forwarding_prep_0 + 92
5 SwiftLive 0x000000010023cb50 -[FLChatRoomInfoView stringRect:fontSize:constraintWidth:constraintHeight:] + 288
6 SwiftLive 0x00000001002354b0 -[FLChatRoomInfoView updateUIWithAnchor:liveRoomInfo:isFollow:] + 2736
7 SwiftLive 0x00000001001e1cd0 -[FLLiveMainInterfaceViewController setupContentView] + 3844
8 SwiftLive 0x00000001001dfe60 -[FLLiveMainInterfaceViewController setupUI] + 2708
9 SwiftLive 0x00000001001d8be0 -[FLLiveMainInterfaceViewController viewDidLoad] + 372
10 UIKit 0x000000018cba10b0 + 1056
11 UIKit 0x000000018cbb8c44 + 132
12 UIKit 0x000000018cd41190 + 1136
13 UIKit 0x000000018cc59858 + 676
14 UIKit 0x000000018cc594c0 + 64
15 UIKit 0x000000018cc59424 + 188
16 UIKit 0x000000018cb9e220 + 1196
17 QuartzCore 0x000000018a05e188 + 148
18 QuartzCore 0x000000018a052e64 + 292
19 QuartzCore 0x000000018a052d24 + 32
20 QuartzCore 0x0000000189fcf7ec + 252
21 QuartzCore 0x0000000189ff6c58 + 512
22 QuartzCore 0x0000000189ff7678 + 120
23 CoreFoundation 0x0000000186cf37dc + 32
24 CoreFoundation 0x0000000186cf140c + 372
25 CoreFoundation 0x0000000186cf189c + 1024
26 CoreFoundation 0x0000000186c20048 CFRunLoopRunSpecific + 444
27 GraphicsServices 0x00000001886a6198 GSEventRunModal + 180
28 UIKit 0x000000018cc0c2fc + 684
29 UIKit 0x000000018cc07034 UIApplicationMain + 208
30 SwiftLive 0x000000010038e380 main + 312
31 libdyld.dylib 0x0000000185c045b8 + 4
) boundingRectWithSize:options:attributes:context:
是计算字符串宽度的方法，而后台传过来的是nsnumber类型的，所以出错了，你没看错，我每天都在出错中度过
17、在 UIScrollView上面添加了一个View，点击View的时候，页面上滑了一下，测试过来提bug，emmmm，可是宝宝看了层级关系，没有可点击的东西啊，QAQ
师父快来救我：
方法三：更改cell属性selectedBackgroundView 的背景色
这个错误可能是因为
把整形变量直接赋值给NSString类型变量，没有进行转化。
关于scrollView点击状态栏列表回到顶部的说明，想要禁用掉此功能将scrollsToTop属性设置为NO即可。
18、去除cell的点击后的选中背景：
方法一：自定义cell里面：
- (void)awakeFromNib {
[super awakeFromNib];
self.selectionStyle = UITableViewCellSelectionStyleNone;
}- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 就不会执行 ,所以如果需要有cell点击事件的 不要用此方法
tableView.allowsSelection = NO; 方法三：更改cell属性selectedBackgroundView 的背景色
我们选中cell时有灰色效果就是因为selectedBackgroundView这个家伙,所以,我们可以通过设置改View的背景色来改变选中颜色
self.selectedBackgroundView = [[UIView alloc] initWithFrame:cell.frame];
self.selectedBackgroundView.backgroundColor = [UIColor redColor]; 注意点:
1, 在storyboard设置tableView属性的时候 如果这样设置 selection: NoSelection
会导致点击cell的时候没反应 不会调用 didSelectRowAtIndexPath 方法
要想有点击方法应设置成 selection: SingleSelection
19、-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000033
2018-01-18 18:17:17.217 SwiftLive[1168:493865] : [BLYLog] Trapped uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000033'
(
0 CoreFoundation 0x00000001818a2ff8 + 148
1 libobjc.A.dylib 0x0000000180304538 objc_exception_throw + 56
2 CoreFoundation 0x00000001818a9ef4 + 0
3 CoreFoundation 0x00000001818a6f54 + 916
4 CoreFoundation 0x00000001817a2d4c _CF_forwarding_prep_0 + 92
5 UIKit 0x00000001879de58c + 108
6 UIKit 0x00000001879de484 + 124
7 UIKit 0x0000000187ad29c0 + 272
8 UIKit 0x0000000187ad2704 + 52
9 UIKit 0x0000000187ad2230 + 488
10 UIKit 0x0000000188335ca0 + 112
11 UIKit 0x000000018833492c + 192
12 UIKit 0x0000000188334c74 + 624
13 UIKit 0x0000000188334bfc + 504
14 UIKit 0x0000000188334bfc + 504
15 UIKit 0x0000000188334bfc + 504
16 UIKit 0x0000000188334bfc + 504
17 UIKit 0x0000000188334bfc + 504
18 UIKit 0x0000000188334bfc + 504
19 UIKit 0x0000000188334bfc + 504
20 Foundation 0x00000001822dca7c + 168
21 UIKit 0x0000000188335410 + 88
22 UIKit 0x0000000188334340 + 116
23 UIKit 0x0000000188335024 + 164
24 UIKit 0x0000000188336070 + 432
25 UIKit 0x00000001879e596c + 892
26 SwiftLive 0x000000010022f88c __69-[FLLiveMainInterfaceViewController showDialogWithUserInfo:withType:]_block_invoke.1225 + 84
27 UIKit 0x0000000187a093dc + 644
28 UIKit 0x0000000187b4da24 + 100
29 SwiftLive 0x000000010022f518 -[FLLiveMainInterfaceViewController showDialogWithUserInfo:withType:] + 620
30 SwiftLive 0x0000000100234a58 -[FLLiveMainInterfaceViewController chatMessageShowUserDetail:withType:] + 84
31 SwiftLive 0x00000001000f3cb4 -[FLChatMessageView getUserDetails:] + 1920
32 SwiftLive 0x00000001000f3ef0 -[FLChatMessageView showUserInfo:] + 444
33 UIKit 0x0000000187fa5d38 + 64
34 UIKit 0x0000000187fa956c + 124
35 UIKit 0x0000000187b63470 + 252
36 UIKit 0x0000000187a05380 + 720
37 UIKit 0x0000000187f99810 + 988
38 UIKit 0x0000000187f993e0 + 404
39 UIKit 0x0000000187f9868c + 268
40 UIKit 0x0000000187a0370c + 3164
41 UIKit 0x00000001879d433c + 340
42 UIKit 0x00000001881ce014 + 2400
43 UIKit 0x00000001881c8770 + 4268
44 UIKit 0x00000001881c8b9c + 148
45 CoreFoundation 0x000000018185142c + 24
46 CoreFoundation 0x0000000181850d9c + 540
47 CoreFoundation 0x000000018184e9a8 + 744
48 CoreFoundation 0x000000018177eda4 CFRunLoopRunSpecific + 424
49 GraphicsServices 0x00000001831e8074 GSEventRunModal + 100
50 UIKit 0x0000000187a39058 UIApplicationMain + 208
51 SwiftLive 0x00000001003dc848 main + 312
52 libdyld.dylib 0x000000018078d59c + 4
)
我错在了，拿到后台的数据是Int类型，赋值给了我自己定义的String类型QAQ