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我在C4应用程序的画布上添加了42个形状。我如何确定用户触摸了哪一个形状?C4点击了哪个形状?
我添加形状如下:
#import "C4Workspace.h"
@implementation C4WorkSpace{
C4Shape *greyRect;
}
-(void)setup {
int imageWidth=53.53;
int imageHeight=65.1;
for (int i=0; i<42; i++) {
int xMultiplier=(i)%6;
int yMultiplier= (i)/6;
int xPos=xMultiplier*imageWidth;
int yPos=yMultiplier*imageHeight;
greyRect=[C4Shape rect:CGRectMake(xPos, yPos, imageWidth, imageHeight)];
greyRect.fillColor=[UIColor colorWithRed:0 green:0 blue:0 alpha:0];
greyRect.lineWidth=2;
greyRect.strokeColor=[UIColor colorWithRed:0.7 green:0 blue:0 alpha:1];
[self listenFor:@"touchesBegan" fromObject:greyRect andRunMethod:@"highlightLetter"];
[self.canvas addShape:greyRect];
}
}
-(void)highlightLetter{
C4Log(@"highlightLetter");
}
@end
我几乎只需要知道哪个号码[I]点击的矩形了。
但我不知道如何访问运行该行之后:[self listenFor:@"touchesBegan" fromObject:greyRect andRunMethod:@"highlightLetter"];
有什么建议?
这是做的伎俩,我适应了我需要的方式!谢谢!! – suMi