ios中NSMutableArray可变数组add新数组

[jeffa]

各位我最近在做类似QQ聊天记录的一个列表功能。服务端那边反馈给我的是根据我传的页数返回给我一个数据。我在代码中创建了一个可变数组NSMutableArray来接受服务器传过来的数据。用for循环进行遍历接收服务器传过来的数据。可是我如何将每次获取得到的数据add到我之前的数组前面，比如我现在翻到了第一页数组是这样[{name:john},{name:john},{name:john},{name:john}]；这个时候我下来得到第二页数据的时候如何将第二页得到的数组数组[{name:john2},{name:john2},{name:john2},{name:john2}]；add到第一页数组的前面变成这样的一个新数组[[{name:john2},{name:john2},{name:john2},{name:john2},{name:john},{name:john},{name:john},{name:john}]；

[Bannings]

    NSMutableArray *items = [NSMutableArray new];
    NSArray *page1 = @[@"1", @"1", @"1"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page1.count - 1)]];
    NSArray *page2 = @[@"2", @"2", @"2"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page2.count - 1)]];

[jeffa]

引用 1 楼 zhangao0086 的回复:

    NSMutableArray *items = [NSMutableArray new];
    NSArray *page1 = @[@"1", @"1", @"1"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page1.count - 1)]];
    NSArray *page2 = @[@"2", @"2", @"2"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page2.count - 1)]];

老大直接报错了

[Bannings]

引用 3 楼 jeffa 的回复:

[quote=引用 1 楼 zhangao0086 的回复:]

    NSMutableArray *items = [NSMutableArray new];
    NSArray *page1 = @[@"1", @"1", @"1"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page1.count - 1)]];
    NSArray *page2 = @[@"2", @"2", @"2"];
    [items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page2.count - 1)]];

老大直接报错了[/quote] 忘了，不用减1：

NSMutableArray *items = [NSMutableArray new];
NSArray *page1 = @[@"1", @"1", @"1"];
[items insertObjects:page1 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page1.count)]];
NSArray *page2 = @[@"2", @"2", @"2"];
[items insertObjects:page2 atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, page2.count)]];

[诚实可靠小码农]

留名，以后有用

[xxf6842]

NSMutableArray *arrM = [[NSMutableArray alloc] init]; [arrM addObjectsFromArray:self.modelArray]; [arrM addObjectsFromArray:tmpM.copy]; self.modelArray = arrM; ​ 这样