我有一个按住按钮的按钮。我使用UILongPressGestureRecognizer
。我希望从持有动作中获得最大值。
执行按钮时,我已开始CABasicAnimation
30秒,并开始录制视频最长30秒。如果按钮在30秒之前没有释放,我想要UIGestureRecognizerStateEnded
的执行方法。请问一些想法?谢谢!
这是我的代码的一部分:
UILongPressGestureRecognizer *btn_LongPress_gesture = [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleBtnLongPressGesture:)];
[self.snapButton addGestureRecognizer:btn_LongPress_gesture];
长按法:
- (void)handleBtnLongPressGesture:(UILongPressGestureRecognizer *)recognizer {
//as you hold the button this would fire
if (recognizer.state == UIGestureRecognizerStateBegan) {
if(!self.camera.isRecording) {
self.flashlightButton.hidden = YES;
self.flshlightLabel.hidden=YES;
self.switchCameraButton.hidden = YES;
self.switchImage.hidden=YES;
self.FlashImage.hidden=YES;
self.BackImage.hidden=YES;
// start recording
NSURL *outputURL = [[[self applicationDocumentsDirectory]
URLByAppendingPathComponent:@"test1"] URLByAppendingPathExtension:@"mov"];
[self.camera startRecordingWithOutputUrl:outputURL];
// self.snapImage.hidden=YES;
circle = [CAShapeLayer layer];
// Make a circular shape
circle.path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 73, 73)
cornerRadius:37].CGPath;
circle.frame=CGRectMake(self.snapImage.frame.origin.x + 3, self.snapImage.frame.origin.y + 3, 74, 74);
// Configure the apperence of the circle
circle.fillColor = [UIColor clearColor].CGColor;
circle.strokeColor = [UIColor colorWithRed:149.0/256.0 green:153.0/256.0 blue:150.0/256.0 alpha:247.0/256.0].CGColor;
circle.lineWidth = 8;
// Add to parent layer
[self.view.layer addSublayer:circle];
drawAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
drawAnimation.duration = 30.0; // "animate over 10 seconds or so.."
// "animate over 10 seconds or so.."
drawAnimation.repeatCount = 1.0; // Animate only once..
// drawAnimation.removedOnCompletion = YES; // Remain stroked after the animation...
// Animate from no part of the stroke being drawn to the entire stroke being drawn
drawAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
drawAnimation.toValue = [NSNumber numberWithFloat:1.0f];
// Experiment with timing to get the appearence to look the way you want
drawAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
// Add the animation to the circle
[circle addAnimation:drawAnimation forKey:@"drawCircleAnimation"];
[self.view bringSubviewToFront:self.snapImage];
}
}
// as you release the button this would fire
if (recognizer.state == UIGestureRecognizerStateEnded) {
if(self.camera.isRecording) {
self.flashlightButton.hidden = NO;
self.flshlightLabel.hidden=NO;
self.switchCameraButton.hidden = NO;
self.switchImage.hidden=NO;
self.FlashImage.hidden=NO;
self.BackImage.hidden=NO;
[circle removeAnimationForKey:@"drawCircleAnimation"];
[circle removeFromSuperlayer];
[self.camera stopRecording:^(LLSimpleCamera *camera, NSURL *outputFileUrl, NSError *error) {
VideoViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:@"VideoVC"];
vc.urlVideo=outputFileUrl;
[self presentViewController:vc animated:YES completion:nil];
}];
}
}
}
答案 0 :(得分:1)
创建一个名为timer:@property (nonatomic, strong) NSTimer *timer;
还有一个柜台:@property (nonatomic, strong) int counter;
- (void)incrementCounter {
self.counter++;
}
- (void)handle:(UILongPressGestureRecognizer)gesture {
if (gesture.state == UIGestureRecognizerStateBegan) {
self.counter = 0;
self.timer = [NSTimer scheduledTimerWithTimeInterval:30 target:self selector:@selector(incrementCounter) userInfo:nil repeats:yes];
}
if (gesture.state == UIGestureRecognizerStateEnded) {
[self.timer invalidate];
}
}
30秒后删除手势
longPressgesture.enable = NO;