unsigned int count = 0;
Ivar *ivars = class_copyIvarList([UIAlertAction class], &count);
for (int i = 0; i<count; i++) {
// 取出成员变量
// Ivar ivar = *(ivars + i);
Ivar ivar = ivars[i];
// 打印成员变量名字
NSLog(@"%s------%s", ivar_getName(ivar),ivar_getTypeEncoding(ivar));
}
获取了成员变量的名字之后,再去设置颜色
[alertAction setValue:titleColor forKey:@"titleTextColor"];
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