1.轮播图：UIScrollView UICollectionView
2.UITextField leftView属性
UILabel userInteractionEnabled属性
NSAttributeString
3.OC-JS jscontext.evaluateScript
4.微信支付返回结果：UIApplication
5.100个用户验证，客户端与服务器端
6.
NSLog(@"%lu",sizeof(int));
NSLog(@"%lu",sizeof(int*));
NSLog(@"%lu",sizeof(char[3]));
7.
dispatch_queue_t queue = dispatch_queue_create("com.dispatch.serial", DISPATCH_QUEUE_SERIAL);
dispatch_async(queue, ^{
NSLog(@"1");
[NSThread sleepForTimeInterval:5.0f];
dispatch_async(queue, ^{
NSLog(@"5");
});
[NSThread sleepForTimeInterval:5.0f];
dispatch_async(queue, ^{
NSLog(@"6");
});
NSLog(@"2");
dispatch_suspend(queue);
NSLog(@"3");
[NSThread sleepForTimeInterval:10.0f];
dispatch_resume(queue);
NSLog(@"4");
});
8.监听网络状态
（1）Reachability
（2）AFNetworking
（3）从状态栏中获取网络类型
NSArray *children = [[[[UIApplication sharedApplication] valueForKeyPath:@"statusBar"]valueForKeyPath:@"foregroundView"]subviews];