前言
*** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[__NSCFConstantString count]: unrecognized selector sent to instance 0x63b2490’
由于保存到到KeychainItemWrapper 的value是字符串，因此采用保存json 格式的字符串保存到其中，间接的相当于保存字典数据到钥匙串
例子
- (NSMutableDictionary *)Wrapperdic {
//
if (_Wrapperdic == nil) {
CMPayKeychainItemWrapper *wrapper = [[CMPayKeychainItemWrapper alloc] initWithIdentifier:keyChainwrapinitWithIdentifierkey accessGroup:nil];
NSString *strtmpwrapper = [wrapper objectForKey:(__bridge id)kSecValueData];// 这个保存的只能字符串。 因此我要使用 字典转字符串，到时候再转一次回字典
//2018-08-06 14:33:22.689 WeChat[4790:562979] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFConstantString count]: unrecognized selector sent to instance 0x63b2490'
// NSDictionary *tmp =
NSMutableDictionary * tmpwrapper = nil;
NSLog(@"strtmpwrapper :%@ strtmpwrapperlength:%d",strtmpwrapper,strtmpwrapper.length);
if (strtmpwrapper == nil ) {
tmpwrapper = nil;
}else {
//2018-08-06 15:02:05.432 WeChat[4918:567786] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[__NSCFDictionary setObject:forKey:]: mutating method sent to immutable object'
tmpwrapper = [NSMutableDictionary dictionaryWithDictionary:[KNconvertHexStrToString dicWithJsonstr:strtmpwrapper]];
}
NSLog(@"读出tmpwrapper:%@",tmpwrapper);
if (tmpwrapper == nil || tmpwrapper.count == 0)
{
// 如果是模拟器
if (TARGET_IPHONE_SIMULATOR){
}else{
// 保存字段对象
tmpwrapper = [NSMutableDictionary dictionaryWithCapacity:2];
// 转为json 字符串
[tmpwrapper setValue:@"ss" forKey:@"test"];// 防止//2018-08-06 16:01:55.264 WeChat[5121:581395] json 解析错误: --- error Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (No value.) UserInfo=0x1959bb00 {NSDebugDescription=No value.}
NSLog(@"保存一个null 字典 tmpwrapper:%@",tmpwrapper);
[wrapper setObject:[KNconvertHexStrToString dictionnaryObjectToString:tmpwrapper] forKey:(__bridge id)kSecValueData];// reason: '*** setObjectForKey: key cannot be nil'
}
NSLog(@"写入tmpwrapper :%@",tmpwrapper);
}
_Wrapperdic = tmpwrapper;
}
NSLog(@"_Wrapperdic:%@", _Wrapperdic);
return _Wrapperdic;
}
initWithIdentifier
这个值不能随便修改，最好和bid 一致。获取xx+bid: UVXCYJX.KNcom.tencent.xin
推荐： teamid+ bid
想保存更多信息，除了采用json 字符串，当然好可以使用更多的
initWithIdentifier
See Also
/Users/devzkn/bin//knpost saveDictionaryToKeyChain 保存字典字符串到钥匙串 -t objc #原来""的参数，需要自己加上""
转载请注明：张坤楠的博客 > saveDictionaryToKeyChain
