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ios reason: '-[__nsarraym objectforkeyedsubscript:]: unrecognized selector sent to instance 0x60800。
一、源代码
nsdictionary * dic = [nsjsonserialization jsonobjectwithdata:responseobject options:nsjsonreadingmutablecontainers error:nil];
nslog(@"dic === %@",dic);
打印结果:dic === {
len = 69;
list = (
{//是字段数据
}
for (nsdictionary * subdic in dic[@"list"]) {
nslog(@“遍历数据”);
}
如果后台数据格式修改不是dic[@"list”]),就是崩溃报错如下:
reason: '-[__nsarraym objectforkeyedsubscript:]: unrecognized selector sent to instance 0x60800025e840'
二、解决方案
解决方法一:
nsmutablearray *toplevelarray = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingmutablecontainers error:nil];
nsdictionary *dict = toplevelarray[0];
for (nsdictionary * subdic in dict) {
nslog(@“遍历数据”);
}
解决方法二:
如果您想要检查你的什么，你可以使用 iskindofclass:像这样：
id jso = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingmutablecontainers error:nil];
if (jso == nil) {
// error. you should probably have passed an nserror ** as the error
// argument so you could log it.
} else if ([jso iskindofclass:[nsarray class]]) {
nsarray *array = jso;
// process array elements
} else if ([jso iskindofclass:[nsdictionary class]]) {
nsdictionary *dict = jso;
// process dictionary elements
} else {
// shouldn't happen unless you use the nsjsonreadingallowfragments flag.
}
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