1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
| - (void)yc_setValue:(nullable id)value forKey:(NSString *)key {
if (key == nil || key.length == 0) {
return;
}
NSString *Key = key.capitalizedString; //首字母大写
// 拼接相关的方法名
NSString *setKey = [NSString stringWithFormat:@"set%@:",Key];
NSString *_setKey = [NSString stringWithFormat:@"_set%@:",Key];
NSString *setIsKey = [NSString stringWithFormat:@"setIs%@:",Key];
// 按顺序判断是否实现三个实例方法
if ([self yc_performSelectorWithMethodName:setKey value:value]) {
NSLog(@"___ %@ ___",setKey);
return;
} else if ([self yc_performSelectorWithMethodName:_setKey value:value]) {
NSLog(@"___ %@ ___",_setKey);
return;
} else if ([self yc_performSelectorWithMethodName:setIsKey value:value]) {
NSLog(@"___ %@ ___",setIsKey);
return;
}
if (![self.class accessInstanceVariablesDirectly] ) {
@throw [NSException exceptionWithName:@"yc_UnknownKeyException" reason:[NSString stringWithFormat:@"****[%@ valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.****",self] userInfo:nil];
}
// 获取所有实例变量的名字
NSMutableArray *mArray = [self getIvarListName];
// 拼接出需要的实例变量名字
NSString *_key = [NSString stringWithFormat:@"_%@",key];
NSString *_isKey = [NSString stringWithFormat:@"_is%@",Key];
NSString *isKey = [NSString stringWithFormat:@"is%@",Key];
// 依次判断拼接的实例变量名字是否在实例变量数组中，存在则获取实例变量并赋值
if ([mArray containsObject:_key]) {
Ivar ivar = class_getInstanceVariable([self class], _key.UTF8String);
object_setIvar(self , ivar, value);
return;
} else if ([mArray containsObject:_isKey]) {
Ivar ivar = class_getInstanceVariable([self class], _isKey.UTF8String);
object_setIvar(self , ivar, value);
return;
} else if ([mArray containsObject:key]) {
Ivar ivar = class_getInstanceVariable([self class], key.UTF8String);
object_setIvar(self , ivar, value);
return;
} else if ([mArray containsObject:isKey]) {
Ivar ivar = class_getInstanceVariable([self class], isKey.UTF8String);
object_setIvar(self , ivar, value);
return;
}
// 如果找不到相关实例变量，就抛出异常
@throw [NSException exceptionWithName:@"yc_UnknownKeyException" reason:[NSString stringWithFormat:@"****[%@ %@]: this class is not key value coding-compliant for the key name.****",self, NSStringFromSelector(_cmd)] userInfo:nil];
}
- (BOOL)yc_performSelectorWithMethodName:(NSString *)methodName value:(id)value{
// 判断方法是否能响应，
if ([self respondsToSelector:NSSelectorFromString(methodName)]) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
// 能响应则调用
[self performSelector:NSSelectorFromString(methodName) withObject:value];
#pragma clang diagnostic pop
return YES;
}
return NO;
}
// 获取实例变量的名字
- (NSMutableArray *)getIvarListName{
NSMutableArray *mArray = [NSMutableArray arrayWithCapacity:1];
unsigned int count = 0;
Ivar *ivars = class_copyIvarList([self class], &count);
for (int i = 0; i<count; i++) {
Ivar ivar = ivars[i];
const char *ivarNameChar = ivar_getName(ivar);
NSString *ivarName = [NSString stringWithUTF8String:ivarNameChar];
NSLog(@"ivarName == %@",ivarName);
[mArray addObject:ivarName];
}
free(ivars);
return mArray;
}
|
