1.服务器返回的数据类型
{
responseMessage = {
accountid = “”;
data = “”;
errorCode = 0000;
msg = success;
“msg_help” = “”;
“msg_other” = “”;
“msg_statistics” = (
);
sourceCode = “”;
token = “”;
};
responseType = 1;
}
2.崩溃日志
*** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[__NSCFConstantString objectForKey:]: unrecognized selector sent to instance 0x10b15a470’
3.崩溃原因
打印
[info objectForKey:@”responseMessage”]，可以正常打印，但是打印字典responseMessage下的key为 [@”data”],程序就会崩溃,仔细分析后发现原因是我解析的后台数据中responseMessage 字典下的 data这个 value 一共有三种类型 :1.字典,2.空字典,3.字符串.
4.解决办法
NSString *imgString = @””;
if ([[[info objectForKey:@”responseMessage”] objectForKey:@”data”] isKindOfClass:[NSDictionary class]]) {
imgString = [[[info objectForKey:@”responseMessage”] objectForKey:@”data”]objectForKey:@”imageName”];
}
对 data 进行判断,
a.如果data 的类型为字典,则对数据进行相应的处理
b.如果data 的类型为非字典,则对数据进行其他操作.