我想将颜色添加到UIButton CAShape图层。是否可以根据 url 中的参考渐变颜色效果对 CAShapeLayer .. 我们可以将颜色添加到图层。我UIButton CAShape可以看到按钮笔划的颜色，但我想要渐变颜色到按钮CAShape层。请帮助将颜色设置为UIButton CAShape层。代码是
-(void)changeColour:(id)sender
{
@try{
if(m_cObjbuttonPtr1.layer.sublayers.count > 0){for(CALayer *layer in m_cObjbuttonPtr1.layer.sublayers){if([layer isKindOfClass:[CAShapeLayer class]]) [layer removeFromSuperlayer];}}if (m_cObjbuttonPtr2.layer.sublayers.count > 0){ for(CALayer *layer in m_cObjbuttonPtr2.layer.sublayers){if([layer isKindOfClass:[CAShapeLayer class]])[layer removeFromSuperlayer];}}if(m_cObjbuttonPtr3.layer.sublayers.count > 0){for(CALayer *layer in m_cObjbuttonPtr3.layer.sublayers){if([layer isKindOfClass:[CAShapeLayer class]]) [layer removeFromSuperlayer];}}if (m_cObjbuttonPtr4.layer.sublayers.count > 0){ for(CALayer *layer in m_cObjbuttonPtr4.layer.sublayers){if([layer isKindOfClass:[CAShapeLayer class]])[layer removeFromSuperlayer];}}if(m_cObjbuttonPtr5.layer.sublayers.count > 0){ for(CALayer *layer in m_cObjbuttonPtr5.layer.sublayers){if([layer isKindOfClass:[CAShapeLayer class]])[layer removeFromSuperlayer];}}}@catch (NSException *exception){}
UIButton *tempButton =(UIButton *)sender;
UIBezierPath *aPath = [UIBezierPath bezierPath];
[aPath moveToPoint:CGPointMake(0.0, 0.0)];
[aPath addLineToPoint:CGPointMake(0.0, 35.0)];
[aPath moveToPoint:CGPointMake(0.0, 35.0)];
[aPath addLineToPoint:CGPointMake(80.0, 55.0)];
[aPath moveToPoint:CGPointMake(80.0, 55.0)];
[aPath addLineToPoint:CGPointMake(180.0, 35.0)];
[aPath moveToPoint:CGPointMake(180.0, 35.0)];
[aPath addLineToPoint:CGPointMake(180.0, 0.0)];
[aPath moveToPoint:CGPointMake(180.0, 0.0)];
[aPath addLineToPoint:CGPointMake(0.0, 0.0)];
[aPath closePath];
CAShapeLayer *shapeLayer = [CAShapeLayer layer];
if(tempButton.tag == 1)
shapeLayer.frame = m_cObjbuttonPtr1.bounds;
if(tempButton.tag == 2)
shapeLayer.frame = m_cObjbuttonPtr2.bounds;
if(tempButton.tag == 3)
shapeLayer.frame = m_cObjbuttonPtr3.bounds;
if(tempButton.tag == 4)
shapeLayer.frame = m_cObjbuttonPtr4.bounds;
if(tempButton.tag == 5)
shapeLayer.frame = m_cObjbuttonPtr5.bounds;
shapeLayer.path = aPath.CGPath;
[shapeLayer setStrokeColor:[[UIColor redColor] CGColor]];
shapeLayer.fillColor = [[UIColor redColor] CGColor];
shapeLayer.lineWidth = 2;
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
if(tempButton.tag == 1)
gradientLayer.frame = m_cObjbuttonPtr1.bounds;
if(tempButton.tag == 2)
gradientLayer.frame = m_cObjbuttonPtr2.bounds;
if(tempButton.tag == 3)
gradientLayer.frame = m_cObjbuttonPtr3.bounds;
if(tempButton.tag == 4)
gradientLayer.frame = m_cObjbuttonPtr4.bounds;
if(tempButton.tag == 5)
gradientLayer.frame = m_cObjbuttonPtr5.bounds;
gradientLayer.colors = [NSArray arrayWithObjects:
(id)[UIColor colorWithRed:0.98f green:0.31f blue:0.46f alpha:0.0].CGColor,
(id)[UIColor colorWithRed:0.98f green:0.31f blue:0.14f alpha:0.0].CGColor,nil];
gradientLayer.locations = [NSArray arrayWithObjects:
[NSNumber numberWithFloat:0.0f],
[NSNumber numberWithFloat:1.0f],
nil];
if(tempButton.tag == 1){
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.startPoint = CGPointMake(0.5,1.0);
gradientLayer.endPoint = CGPointMake(0.5,0.0);
gradientLayer.frame = CGRectMake(0, 0, shapeLayer.frame.size.width, shapeLayer.frame.size.height);
NSMutableArray *colors = [NSMutableArray array];
for (int i = 0; i < 10; i++) {
[colors addObject:(id)[[UIColor colorWithHue:(0.1 * i) saturation:1 brightness:.8 alpha:1] CGColor]];
}
gradientLayer.colors = colors;
[gradientLayer setMask:shapeLayer];
[shapeLayer setFillRule:kCAFillRuleEvenOdd];
[shapeLayer setFillColor:[[UIColor orangeColor] CGColor]];
[m_cObjbuttonPtr1.layer addSublayer:shapeLayer];
}
if(tempButton.tag == 2){
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.startPoint = CGPointMake(0.5,1.0);
gradientLayer.endPoint = CGPointMake(0.5,0.0);
gradientLayer.frame = CGRectMake(0, 0, m_cObjbuttonPtr2.layer.frame.size.width, m_cObjbuttonPtr2.layer.frame.size.height);
NSMutableArray *colors = [NSMutableArray array];
for (int i = 0; i < 10; i++) {
[colors addObject:(id)[[UIColor colorWithHue:(0.1 * i) saturation:1 brightness:.8 alpha:1] CGColor]];
}
gradientLayer.colors = [NSArray arrayWithObjects:
(id)[UIColor colorWithRed:0.98f green:0.31f blue:0.46f alpha:0.0].CGColor,
(id)[UIColor colorWithRed:0.98f green:0.31f blue:0.14f alpha:0.0].CGColor,
nil];
[gradientLayer setMask:shapeLayer];
[m_cObjbuttonPtr2.layer addSublayer:shapeLayer];
}
if(tempButton.tag == 3){
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.startPoint = CGPointMake(0.5,1.0);
gradientLayer.endPoint = CGPointMake(0.5,0.0);
gradientLayer.frame = CGRectMake(0, 0, m_cObjbuttonPtr3.layer.frame.size.width, m_cObjbuttonPtr3.layer.frame.size.height);
NSMutableArray *colors = [NSMutableArray array];
for (int i = 0; i < 10; i++) {
[colors addObject:(id)[[UIColor colorWithHue:(0.1 * i) saturation:1 brightness:.8 alpha:1] CGColor]];
}
gradientLayer.colors = colors;
[gradientLayer setMask:shapeLayer];
[m_cObjbuttonPtr3.layer addSublayer:shapeLayer];
}
if(tempButton.tag == 4){
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.startPoint = CGPointMake(0.5,1.0);
gradientLayer.endPoint = CGPointMake(0.5,0.0);
gradientLayer.frame = CGRectMake(0, 0, m_cObjbuttonPtr4.layer.frame.size.width, m_cObjbuttonPtr4.layer.frame.size.height);
NSMutableArray *colors = [NSMutableArray array];
for (int i = 0; i < 10; i++) {
[colors addObject:(id)[[UIColor colorWithHue:(0.1 * i) saturation:1 brightness:.8 alpha:1] CGColor]];
}
gradientLayer.colors = colors;
[gradientLayer setMask:shapeLayer];
[m_cObjbuttonPtr4.layer addSublayer:shapeLayer];
}
if(tempButton.tag == 5){
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.startPoint = CGPointMake(0.5,1.0);
gradientLayer.endPoint = CGPointMake(0.5,0.0);
gradientLayer.frame = CGRectMake(0, 0, m_cObjbuttonPtr5.layer.frame.size.width, m_cObjbuttonPtr5.layer.frame.size.height);
NSMutableArray *colors = [NSMutableArray array];
for (int i = 0; i < 10; i++) {
[colors addObject:(id)[[UIColor colorWithHue:(0.1 * i) saturation:1 brightness:.8 alpha:1] CGColor]];
}
gradientLayer.colors = colors;
[gradientLayer setMask:shapeLayer];
[m_cObjbuttonPtr5.layer addSublayer:shapeLayer];
}
}