xcode 将 NSString 插入到 NSBundle 的 pathForResource 中？
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Inserting an NSString into NSBundle's pathForResource?
提问by user128526
This animates the UIImageView in the impactdrawarray:
这会为 Impactdrawarray 中的 UIImageView 设置动画：
if ( ((impact *) [impactarray objectAtIndex:iv]).animframe == 70){
((UIImageView *) [impactdrawarray objectAtIndex:iv]).image =
[UIImage imageWithContentsOfFile:
[[NSBundle mainBundle] pathForResource:@"explosionA71"
ofType:@"png"]];
}
if ( ((impact *) [impactarray objectAtIndex:iv]).animframe == 71){
((UIImageView *) [impactdrawarray objectAtIndex:iv]).image =
[UIImage imageWithContentsOfFile:[[NSBundle mainBundle]
pathForResource:@"explosionA72"
ofType:@"png"]];
}
Nothing appears with this:
什么都没有出现：
NSString *myString2 =
[NSString stringWithFormat:@"A%d",
((impact *) [impactarray objectAtIndex:iv]).animframe;
((UIImageView *) [impactdrawarray objectAtIndex:iv]).image =
[UIImage imageWithContentsOfFile:[[NSBundle mainBundle]
pathForResource:(@"explosion%d", myString2)
ofType:@"png"]];
My reference for using NSString (example)
我使用 NSString 的参考（示例）
NSString *myString23 = [NSString stringWithFormat:@"$%d", money];
moneylabel.text = myString23;
How can I use a variable in the file name? Is there a way to load an image in a resource folder by index? something like imageByIndex:currentanimationframe? I didn't see anything in the UIImage documentation.
如何在文件名中使用变量？有没有办法通过索引在资源文件夹中加载图像？像imageByIndex:currentanimationframe什么？我在 UIImage 文档中没有看到任何内容。
Response to comments:
对评论的回应：
NSString *myString2 = [NSString stringWithFormat:@"A%d", ((impact *) [impactarray objectAtIndex:iv]).animframe];
((UIImageView *) [impactdrawarray objectAtIndex:iv]).image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"explosion%d", myString2] ofType:@"png"]];
and
和
NSString *imagename = [NSString stringWithFormat:@"A%d", ((impact *) [impactarray objectAtIndex:iv]).animframe];
UIImage *myImage = [UIImage imageNamed:imagename];
((UIImageView *) [impactdrawarray objectAtIndex:iv]).image = myImage;
Both compile and run, but the image does not show.
两者都编译并运行，但图像不显示。
回答by Jim Puls
Use +stringWithFormat:, just as in your example:
使用+stringWithFormat:，就像在您的示例中一样：
[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"explosion%d", myString2] ofType:@"png"];
回答by slf
NSString* imageName = [self dynamicallyCalculateImageNameUsingCrazyMath];
UIImage* myImage = [UIImage imageNamed:imageName];
