Objective-C 字符串
2015-11-26 23:00
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#import <UIKit/UIKit.h> #import "AppDelegate.h" int main(int argc, char * argv[]) { NSString *str = @"hello OC"; NSString *str1 = [NSString stringWithFormat:@"Number is %d",100]; NSString *str2 = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://baidu.com"] encoding:NSUTF8StringEncoding error:nil]; // 同步加载网页内容 NSLog(@"%@",str2); // [str substringFromIndex:<#(NSUInteger)#>] 截取字符串 @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); } } /* 在iOS9 beta1中,苹果将原http协议改成了https协议,使用 TLS1.2 SSL加密请求数据。 解决办法: 在info.plist中添加 <key>NSAppTransportSecurity</key><dict> <key>NSAllowsArbitraryLoads</key> <true/></dict> */
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