查看EXC_BAD_ACCESS或SIGABRT的方法
本文出自：http://blog.csdn.net/linhanmin/article/details/8117808
1.打开XCode -> Product -> Edit Scheme
2.选择Arguements的Environment Varibles中添加NSZombieEnabled YES
测试代码
UILabel *label = [[UILabelalloc]initWithFrame:CGRectMake(0,0,102,102)];
[label release];
[self.view addSubview:label];
使用前结果：
-[NSPathStore2 frame]: unrecognized selector sent to instance 0x1f55eff0
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSPathStore2 frame]: unrecognized selector sent to instance 0x1f55eff0'
代码跳回main函数
使用后：
-[UILabel superview]: message sent to deallocated instance 0x1fd30540
