有兩種方式 (TBD)
- UIResponder的四種方法，可以讓使用者自行設計手勢
- (void)touch esBegan:(NSSet *)touches withEvent:(UIEvent *)event
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
- UIGestureRecognizer的方式，不用再自己一個一個去設計/解析，目前有6種
- UILongPressGestureRecognizer
- UIPanGestureRecognizer
- UIPinchGestureRecognizer
- UIRotationGestureRecognizer
- UISwipeGestureRecognizer
- UITapGestureRecognizer - 第一種方式的用法
參考 iOS: how do you get the touchesBegan coordinates when a UIButton is triggered?
UIButton *mouse = [UIButton buttonWithType:UIButtonTypeCustom];
[mouse setFrame:CGRectMake(90.0f, 55.0f, 118.0f, 118.0f)];
[mouse setBackgroundImage:[UIImage imageNamed:@"mouse.png"] forState:UIControlStateNormal];
[mouse setTitle:@"Mouse" forState:UIControlStateNormal];
[mouse.titleLabel setFont:[UIFont fontWithName:@"Arial-BoldMT" size:20]];
[mouse setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[mouse addTarget: self action: @selector(mouseClick:) forControlEvents: UIControlEventTouchDown];
[parent addSubview:mouse];[mouse addTarget:self action:@selector(touchesBegan:withEvent:) forControlEvents: UIControlEventTouchDown];
[mouse addTarget:self action:@selector(touchesMoved:withEvent:) forControlEvents: UIControlEventTouchDragInside];
[mouse addTarget:self action:@selector(touchesEnded:withEvent:) forControlEvents: UIControlEventTouchUpInside | UIControlEventTouchUpOutside];-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"touchesBegan");
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchPoint = [touch locationInView:parent];
NSLog(@"Touch x : %f y : %f", touchPoint.x, touchPoint.y);
}-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"touchesMoved");
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchPoint = [touch locationInView:parent];
NSLog(@"Touch x : %f y : %f", touchPoint.x, touchPoint.y);
mouse.center = CGPointMake(touchPoint.x,touchPoint.y);
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"touchesEnded");
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchPoint = [touch locationInView:parent];
NSLog(@"Touch x : %f y : %f", touchPoint.x, touchPoint.y);
}
