我试图使用不同颜色绘制UIBezierPath线条,但是失败了。所有的线都会变成当前所选颜色。我的路径和信息都存储在一个名为pathInfo的NSMutableArray中。在pathInfo中,我放置了一个包含路径、颜色、宽度和线条类型的数组。这个方法很好用,只是所有的线都变成了用户选择的颜色。非常感谢任何帮助!
- (void)drawRect:(CGRect)rect {
UIBezierPath *drawPath = [UIBezierPath bezierPath];
drawPath.lineCapStyle = kCGLineCapRound;
drawPath.miterLimit = 0;
for (int i = 0; i < [pathInfo count]; i++){
NSArray *row = [[NSArray alloc] initWithArray:[pathInfo objectAtIndex:i]];
NSLog(@"Path: %@",[row objectAtIndex:0]);
NSLog(@"Color: %@",[row objectAtIndex:1]);
NSLog(@"Width: %@",[row objectAtIndex:2]);
NSLog(@"Type: %@",[row objectAtIndex:3]);
//width
drawPath.lineWidth = [[row objectAtIndex:2] floatValue];
//color
[[row objectAtIndex:1] setStroke];
//path
[drawPath appendPath:[row objectAtIndex:0]];
}
UIBezierPath *path = [self pathForCurrentLine];
if (path)
[drawPath appendPath:path];
[drawPath stroke];
}
- (UIBezierPath*)pathForCurrentLine {
if (CGPointEqualToPoint(startPoint, CGPointZero) && CGPointEqualToPoint(endPoint, CGPointZero)){
return nil;
}
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:startPoint];
[path addLineToPoint:endPoint];
return path;
}