(ios)屏幕觸摸總結(jié)

2019-11-14 20:44:06

字體：大中小

供稿：網(wǎng)友

1 屏幕觸控實現(xiàn)（單擊雙擊）

  [self becomeFirstResponder];     //允許多點互動     self.view.multipleTouchEnabled=TRUE;

實現(xiàn)事件部分

#PRagma mark-#pragma mark touch - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{     //觸摸開始   }- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{    //移動    }- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{  //結(jié)束 UITouch *atouch=[touches anyObject];    if(atouch.tapCount>=2)    {        //雙擊    }    else if(atouch.tapCount==1)    {           //單擊    }}- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{}

2 手勢識別（UIlabel 點擊事件實現(xiàn)）

  //設(shè)置圖片的點擊事件    UITapGestureRecognizer *recongnizer=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleTapFrom:)];recongnizer.numberOfTapsRequired=1;     self.img.userInteractionEnabled=YES;    [self.img addGestureRecognizer:recongnizer];}-(void)handleTapFrom:(UITapGestureRecognizer *)recognizer{      [self updateDisplayValuesWithTip:@"tap" tapCount:1 touchCount:1];}

3 屏幕晃動實現(xiàn)

//AppDelegate 中實現(xiàn)- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    application.applicationSupportsShakeToEdit = YES;}//或者代碼中實現(xiàn) [[UIApplication sharedApplication] setApplicationSupportsShakeToEdit:YES];//ViewController 中實現(xiàn)下面方法- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event NS_AVAILABLE_IOS(3_0);{}- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event NS_AVAILABLE_IOS(3_0){    if (event.subtype == UIEventSubtypeMotionShake) {                //搖一搖 行為             }}- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event NS_AVAILABLE_IOS(3_0){}

4 圖片滑動換頁

UISwipeGestureRecognizer *recognizer;       self.img.userInteractionEnabled=YES;    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];    [[self img] addGestureRecognizer:recognizer];            }-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {    NSLog(@"Swipe received.");        if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {        NSLog(@"swipe down");        [UIView beginAnimations:nil context:nil];        [UIView setAnimationDuration:2.0f];        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];        [UIView setAnimationRepeatAutoreverses:NO];        [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];        //界面變化部分       //........                [UIView commitAnimations];    }}