因为公司要求,对view添加了许多手势,但是对于捏合手势有个问题.
如果view过小,捏合手势无法触发. 所以选择通过touched方法来进一步实现 具体代码如下
@property (nonatomic,nullable, strong)UIView * respondsView; /// <--------手势响应的View
@property (nonatomic,assign)CGPoint beginPoint;/// <--------手势响应的起始点
@property (nonatomic,assign)CGPoint changePoint;/// <--------手势响应的变更点
@property (nonatomic, assign)CGAffineTransform transform;///< ------缓存出事from
@property(nonatomic,assign)CGFloat startDistance;//< ------缓存起始点
@property(nonatomic,assign)CGFloat scale; /// < ------缓存缩放比例
@property(nonatomic,assign)BOOL isSet; /// < ------是否设置过transform
@property(nonatomic,assign)BOOL isPan; ///<---是否是刚刚触发了拖动手势
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
//如果响应view存在,说明现在beginPoint有值
if(self.respondsView){
UITouch * touch = [touches anyObject];
CGPoint point = [touch locationInView:self.view];
self.changePoint=point;
// 计算起始位置的距离
self.startDistance = hypot (self.beginPoint.x - self.changePoint.x, self.beginPoint.y - self.changePoint.y);
// 初始化scale值
self.scale = 1.0;
}
}
-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
if(self.respondsView){
UITouch * touch = [touches anyObject];
CGPoint point = [touch locationInView:self.view];
//表示起始位置的距离，
CGFloat currentDistance = hypot (self.beginPoint.x - point.x, self.beginPoint.y - point.y);
self.scale = (currentDistance / self.startDistance) * 1.0;
if(!self.isSet){
self.transform=self.respondsView.transform;
self.isSet=YES;
}
self.respondsView.transform = CGAffineTransformScale(self.transform, self.scale, self.scale);
self.scale = 1.0;
}
}
-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
if(self.respondsView){
self.transform=self.respondsView.transform;
}
}
-(void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
DLog(@"结束了");
}
#pragma mark --clickFunc
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
-(void)tapClick:(UITapGestureRecognizer *)tap{
[self beginEditTextWithClickView:tap.view];
}
-(void)panClick:(UIPanGestureRecognizer*)sender{
CGPoint curtPoint = [sender locationInView:self.view];
self.beginPoint=curtPoint;
// 偏移点
CGPoint translation = [sender translationInView:self.view];
int minY = self.deleteBtn.top;
int minX = self.deleteBtn.left;
int MaxY = self.deleteBtn.top+self.deleteBtn.height;
int MaxX = self.deleteBtn.left+self.deleteBtn.width;
if(self.editAlertView){
[self.editAlertView remove];
}
if(!self.respondsView){
self.respondsView=sender.view;
}else{
if(![sender.view isEqual:self.respondsView]){
return;
}
}
if(sender.state==UIGestureRecognizerStateBegan){
self.bottomView.hidden=YES;
self.deleteBtn.hidden=NO;
beginPoint=CGPointMake(sender.view.center.x, sender.view.center.y);
DLog(@"pint x:%f,y:%f",sender.view.center.x,sender.view.center.y);
}
if (sender.state == UIGestureRecognizerStateChanged) {
if(curtPoint.x>=minX && curtPoint.x<=MaxX && curtPoint.y>minY && curtPoint.y<=MaxY){
if(!self.deleteBtn.selected){
[UtilTools playSystemSound];
}
self.deleteBtn.selected=YES;
}else{
if(self.deleteBtn.selected){
[UtilTools playSystemSound];
self.deleteBtn.selected=NO;
}
}
sender.view.center = CGPointMake(sender.view.center.x + translation.x, sender.view.center.y + translation.y);
[sender setTranslation:CGPointZero inView:self.backImg];
self.isPan=YES;
}
if(sender.state ==UIGestureRecognizerStateEnded ){
//删除操作
if(curtPoint.x>=minX && curtPoint.x<=MaxX && curtPoint.y>minY && curtPoint.y<=MaxY){
[self deleteSubViewWithData:sender.view];
self.deleteBtn.selected=NO;
}else if(curtPoint.y>WIDTH+kNavHeight){
[UIView animateWithDuration:0.2 animations:^{
sender.view.center=self->beginPoint;
}];
}
[UIView animateWithDuration:0.2 animations:^{
self.bottomView.hidden=NO;
self.deleteBtn.hidden=YES;
}];
[self touchCanle];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
self.isPan=NO;
});
}
}
-(void)longClick:(UILongPressGestureRecognizer*)sender{
CGPoint point = [sender locationInView:self.view];
//这里要加三重判断
if(!self.editAlertView && !self.respondsView && !self.isPan){
}
}
-(void)pinClick:(UIPinchGestureRecognizer*)sender{
UIView * senderView = sender.view;
DLog(@"senderScanle:%f",sender.scale);
senderView.transform = CGAffineTransformScale(senderView.transform, sender.scale, sender.scale);
sender.scale = 1.0;
if(!self.respondsView){
self.respondsView=sender.view;
}else{
if(![sender.view isEqual:self.respondsView]){
return;
}
}
if(sender.state==UIGestureRecognizerStateEnded){
if(self.respondsView){
self.transform=self.respondsView.transform;
self.isSet=YES;
}
[self touchCanle];
}
}
-(void)rotationClick:(UIRotationGestureRecognizer*)sender{
//获取旋转的角度
CGFloat scale = sender.rotation;
// 设置view的角度,使用transform设置
sender.view.transform = CGAffineTransformRotate(sender.view.transform, scale);
if(self.respondsView){
self.transform=sender.view.transform;
self.isSet=YES;
}
[sender setRotation:0];
if(sender.state==UIGestureRecognizerStateEnded){
[self touchCanle];
}
}
重要的问题在于对于计算位置的缓存,和transform的刷新.刚写完,在此记录一下
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