谁能帮我告诉我如何访问 NSMutableArray 中的对象。
对象的创建是这样的:
View Controller :
Students *studens =[[Students alloc] initWithDictionary:data]; //where data is NSDictionary
[self.studentData addObject:studens]; //where studentData is a NSMutableArray
在 Students 中是一个 NSObject 类。在学生类中:
-(id)initWithDictionary:(NSDictionary *)studenDictionary
self = [super init];
if (self)
{
self.studentName= [stateDictionary objectForKey:@"name"];
self.studenLastName= [stateDictionary objectForKey:@"lastName"];
self.StundenAddress= [stateDictionary objectForKey:@"address"];
}
return self;
}
如果我 nslog nsmutablearray 我会得到这个输出:
"<studens: 0x756b970>",
"<studens: 0xf46f9a0>"
例如,我的问题是如何访问学生姓名 John 的信息?
最佳答案
在您的Students
类中实现description
方法:
- (NSString *)description {
return [NSString stringWithFormat:@"Students: name: %@, lastName: %@, address: %@", self.studentName, self.studentLastNAme, self.studentAddress];
}
现在,当您记录数组时,您将看到有关数组中每个 Students
对象的有用信息。
关于iphone - iOS:如何查询nsmutablearray对象中的对象,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17418181/