IOS开发实现按钮长按连续触发效果
2020-02-25 本文已影响0人
perfect_coding
实现的效果就像是我们平时玩游戏的时候,长按发射按钮,飞机一直发射子弹一样
如上图,我按住向右的按钮,让角色移动一段距离。
实现代码:
- 第一步:先生成一个视图,用来接收长按事件
self.customView = [[UIView alloc] initWithFrame:CGRectMake(20, 300, 200, 200)];
[self.view addSubview:self.customView];
self.customView.backgroundColor = [UIColor greenColor];
[self.customView addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)]];
- 第二步:增加调用目的函数的定时器
- (void)longPressAction:(UILongPressGestureRecognizer *)gesture {
if (gesture.state == UIGestureRecognizerStateBegan) {
self.timer = [NSTimer timerWithTimeInterval:0.1 target:self selector:@selector(moveMethod) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
}
if (gesture.state == UIGestureRecognizerStateEnded) {
[self.timer invalidate];
self.timer = nil;
}
}
+第三步:设置要连续执行的函数
int count = 0;
- (void)moveMethod {
NSLog(@"移动距离:%d",count++);
}