Question

我使用下面的代码来处理我的应用程序中的触摸并且我在touchesBegan中用于循环同时进行handel 2次触摸，但问题是如果用户用两根手指拖动只需一次工作我可以让2个工作正常吗？

代码：

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

touchesMoved code：

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    MainViewController *Note = [[MainViewController alloc] init];
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView:touch.view];
    NSLog(@"pointx: %f pointy:%f", location.x, location.y);

    if(CGRectContainsPoint(b_do.frame , location)) 
    {
        if (![b_do isHighlighted]){
            [Note playNote:[b_do currentTitle] type:@"wav"];
            [self b_do];
            [b_do setHighlighted:YES];
            NSLog(@"Doooo");
        }
    }else {
        [b_do setHighlighted:NO];
        NSLog(@"Not Do");
    }

    if(CGRectContainsPoint(b_re.frame, location)) 
    {
        if (!b_re.isHighlighted){
            [self b_re];
            [Note playNote:[b_re currentTitle] type:@"wav"];
            [b_re setHighlighted:YES];
        }
    }else {
        [b_re setHighlighted:NO];
    }
    if(CGRectContainsPoint(b_me.frame, location))
    {
        if (!b_me.isHighlighted){
            [self b_me];
            [Note playNote:[b_me currentTitle] type:@"wav"];
            [b_me setHighlighted:YES];
        }
    }else {
        [b_me setHighlighted:NO];
    }
    if (CGRectContainsPoint(b_fa.frame, location)) 
    {
        if (!b_fa.isHighlighted){
            [self b_fa];
            [Note playNote:[b_fa currentTitle] type:@"wav"];
            [b_fa setHighlighted:YES];
        }
    }else {
        [b_fa setHighlighted:NO];
    }
    if (CGRectContainsPoint(b_sol.frame, location)) 
    {
        if (!b_sol.isHighlighted){
            [self b_sol];
            [Note playNote:[b_sol currentTitle] type:@"wav"];
            [b_sol setHighlighted:YES];
        }
    }else {
        [b_sol setHighlighted:NO];
    }
    if (CGRectContainsPoint(b_la.frame, location)) 
    {
        if (!b_la.isHighlighted){
            [self b_la];
            [Note playNote:[b_la currentTitle] type:@"wav"];
            [b_la setHighlighted:YES];
        }
    }else {
        [b_la setHighlighted:NO];
    }
    if (CGRectContainsPoint(b_ci.frame, location))
    {
        if (!b_ci.isHighlighted){
            [self b_la];
            [Note playNote:[b_ci currentTitle] type:@"wav"];
            [b_ci setHighlighted:YES];
        }
    }else {
        [b_ci setHighlighted:NO];
    }
    if (CGRectContainsPoint(b_doo.frame, location)) 
    {
        if (!b_doo.isHighlighted){
            [self b_doo];
            [Note playNote:[b_doo currentTitle] type:@"wav"];
            [b_doo setHighlighted:YES];
        }
    }else {
        [b_doo setHighlighted:NO];
    }
}

Answer 1

如果您使用的是3.2或更高版本，我建议您将其更改为使用GestureRecognizer，这比使用touchesBegan更容易使用和理解。

2触动拖动问题

1 个答案: