Question

我想知道如何构建具有随机背景图像的动态UItable？例如我有6张图像叫做back1.png，back2.png，back3.png ...... back6.png。

“cellForRowAtIndexPath”

中要添加的代码

我只能按顺序为每个单元格分配特定图像，

if(indexPath.row == 0){
    newView.backgroundColor = [UIColor [UIColor colorWithPatternImage:[UIImage imageNamed:@"lightwood1.jpg"]];
}
if(indexPath.row == 1){
    newView.backgroundColor = [UIColor [UIColor colorWithPatternImage:[UIImage imageNamed:@"lightwood2.jpg"]];
}
if(indexPath.row == 2){
    newView.backgroundColor = [UIColor [UIColor colorWithPatternImage:[UIImage imageNamed:@"lightwood3.jpg"]];
}

但是我怎么能在UITableView中随意改变它无限行？

Answer 1

试试这个......

int lowerBound = 1;
int upperBound = 7;
int randomValue = lowerBound + arc4random() % (upperBound - lowerBound);

newView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:[NSString stringWithFormat:@"lightwood%d.jpg", randomValue]]];

Answer 2

试试这个，可能会有所帮助

newView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:[NSString stringWithFormat:@"lightwood%d.jpg", indexPath.row]]];

indexPath.row逐个增加，你的图片名称也逐一增加.... 谢谢

UITableviewCell中的随机背景图像

2 个答案: