将项目从NSMutableArray复制到另一个

Question

我尝试将项目从NSMutableArray复制到另一个.

我在我的两个第一个MutableArray(storiesRSS1和storiesRSS2)中添加了项目:

[item setObject:currentTitle forKey:@"title"];
[item setObject:currentLink forKey:@"link"];
[item setObject:currentSummary forKey:@"summary"]; 
[item setObject:currentDate forKey:@"date"];
[item setObject:currentImage forKey:@"image"];
[item setObject:currentMovie forKey:@"movie"];
[storiesRSS1 addObject:[item copy]];


[item setObject:currentTitle forKey:@"title"];
[item setObject:currentLink forKey:@"link"];
[item setObject:currentSummary forKey:@"summary"]; 
[item setObject:currentDate forKey:@"date"];
[item setObject:currentImage forKey:@"image"];
[item setObject:currentMovie forKey:@"movie"];
[storiesRSS2 addObject:[item copy]];

对于这两个阵列,它可以工作.

之后我想在第三个数组中混合(stories).

int i=0;
int nbElement=[storiesRSS1 count]+[storiesRSS2 count];
while (i<nbElement) {
    if (i<[tempArrayTed count]) {
        [stories addObject:[storiesRSS1 objectAtIndex:i]];
    }
    if (i<[tempArrayYoutube count]) {
        [stories addObject:[storiesRSS2 objectAtIndex:i]];
    }
    i++;
}

但是,当我试图展示每件物品时,它总是如此null!

你能帮助我吗,谢谢.

Answer 1

NSMutableArray有一个addObjectsFromArray: 方法，您可能会发现有用。

[stories addObjectsFromArray:storiesRSS1];
[stories addObjectsFromArray: storiesRSS2];

顺便说一句，当你这样做时，你就会泄漏内存：

[storiesRSS1/2 addObject:[item copy]];