插入一个NSString到NSBundle的pathForResource中？(Inserting an NSString into NSBundle's pathForResource?)

这为impactdrawarray中的UIImageView设置了动画：

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"]]; }

没有出现这样的情况：

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"]];

我使用NSString的参考（示例）

NSString *myString23 = [NSString stringWithFormat:@"$%d", money]; moneylabel.text = myString23;

如何在文件名中使用变量？有没有办法通过索引加载资源文件夹中的图像？像imageByIndex:currentanimationframe ？我在UIImage文档中没有看到任何内容。

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"]];

和

NSString *imagename = [NSString stringWithFormat:@"A%d", ((impact *) [impactarray objectAtIndex:iv]).animframe]; UIImage *myImage = [UIImage imageNamed:imagename]; ((UIImageView *) [impactdrawarray objectAtIndex:iv]).image = myImage;

既编译和运行，但图像不显示。

This animates the UIImageView in the impactdrawarray:

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:

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)

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.

Response to comments:

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

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.