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5.转换证书格式分别将推送证书和证书私钥导出为p12 5.1. 转换推送证书为pem格式（推送证书） 5.2.加密转换（私钥）转换私钥为pem格...
在iOS系统中，系统分配了16byte(16字节)内存空间，可通过malloc_size()函数获取字节数，class_getInstanceS...
AppDelegate delegate=(AppDelegate)[[UIApplication sharedApplication] del...
(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(...
//后台定位self.locationManager.showsBackgroundLocationIndicator=YES;
//获取系统是24小时制或者12小时制NSString *formatStringForHours = [NSDateFormatter dat...
MQTTCFSocketTransport *transport=[[MQTTCFSocketTransport alloc]init];tra...
NSMutableArray *countriesArray = [[NSMutableArray alloc] init];NSLocale ...
必须要这样写 才行NSString *tempStr=@"37.3";NSNumber * tempNumber = @([tempStr do...