[IOS UI advanced, iosui advanced

[IOS UI advanced, iosui advanced
A. Gesture Recognition provided by the system1-(void) testTap {2 // create gesture reader 3 UITapGestureRecognizer * tapRec = [[using alloc] initWithTarget: self action: @ selector (tapRun :)]; 4 tapRec. numberOfTapsRequired = 3; // number of times you need to click 5 tapRec. numberOfTouchesRequired = 2; // number of points to be clicked at the same time: 6 7 // configure the gesture reader to control 8 [self. hvwView addGestureRecognizer: tapRec]; 9} 10 11/** method of event handling for the tap gesture */12-(void) tapRun :( UITapGestureRecognizer *) tapRec {13 NSLog (@ "tapRun"); 14}

 

2. long-press gesture seek: Long-press effective time numberOfTouchesRequired: required simultaneous clicks numberOfTapsRequired: Required clicks allowableMovement: Long-press valid range (starting from the click, long-Press the permitted range) ps: the target method will be continuously called when moving

1-(void) testLongPress {2 UILongPressGestureRecognizer * longRec = [[UILongPressGestureRecognizer alloc] initWithTarget: self action: @ selector (longPressRun :)]; 3 4 longRec. minimumPressDuration = 2; // long press time 5 longRec. allowableMovement = 50; // long-pressed allowed range, unit: px6 7 [self. hvwView addGestureRecognizer: longRec]; 8}

3. UISwipeGestureRecognizerdirection

1 typedef enum {2    UISwipeGestureRecognizerDirectionRight = 1 << 0,3    UISwipeGestureRecognizerDirectionLeft  = 1 << 1,4    UISwipeGestureRecognizerDirectionUp    = 1 << 2,5    UISwipeGestureRecognizerDirectionDown  = 1 << 36 } UISwipeGestureRecognizerDirection;

 

1-(void) testSwipe {2 UISwipeGestureRecognizer * swipeRec = [[delealloc] initWithTarget: self action: @ selector (swipeRun :)]; 3 swipeRec. direction = UISwipeGestureRecognizerDirectionRight; // sweep direction 4 5 [self. hvwView addGestureRecognizer: swipeRec]; 6}

 

4. kneading gesture UIPinchGestureRecognizerscale: the kneading distance.

1-(void) testPinch {2 UIPinchGestureRecognizer * rec = [[UIPinchGestureRecognizer alloc] initWithTarget: self action: @ selector (pinchRun :)]; 3 4 [self. hvwView addGestureRecognizer: rec]; 5} 6 7-(void) pinchRun :( UIPinchGestureRecognizer *) rec {8 rec. view. transform = CGAffineTransformScale (rec. view. transform, rec. scale, rec. scale); 9 10 // be sure to reset !!! Otherwise, press and hold the pinch button to add the multiples of 11 rec. scale = 1; 12}

1-(void) testRotation {2 UIRotationGestureRecognizer * rotationRec = [[UIRotationGestureRecognizer alloc] initWithTarget: self action: @ selector (rotationRun :)]; 3 4 [self. hvwView addGestureRecognizer: rotationRec]; 5} 6 7-(void) rotationRun :( UIRotationGestureRecognizer *) rec {8 rec. view. transform = CGAffineTransformRotate (rec. view. transform, rec. rotation); 9 10 // be sure to reset !!! Otherwise, the rotation11 rec. rotation = 0; 12}1-(void) testPan {2 UIPanGestureRecognizer * rec = [[UIPanGestureRecognizer alloc] initWithTarget: self action: @ selector (panRun :)]; 3 4 [self. hvwView addGestureRecognizer: rec]; 5} 6 7-(void) panRun :( UIPanGestureRecognizer *) rec {8 // get the drag distance from 9 CGPoint movedDistance = [rec translationInView: rec. view]; 10 CGPoint viewCenter = rec. view. center; 11 viewCenter. x + = movedDistance. x; 12 viewCenter. y + = movedDistance. y; 13 rec. view. center = viewCenter; 14 15 // reset drag distance 16 [rec setTranslation: CGPointZero inView: rec. view]; 17}1 @ interface ViewController () <UIGestureRecognizerDelegate>2. Set a proxy for the gesture reader that needs to be recognized at the same time

1 rec.delegate = self;

3. How to Implement the simultaneous use of the gesture Reader

1-(BOOL) gestureRecognizer :( UIGestureRecognizer *) gestureRecognizer combined :( UIGestureRecognizer *) combined {2 3 // All two gesture identifiers can use 4 return YES; 5}

 

1 // 2 // ViewController. m 3 // GestureRecognizerTest 4 // 5 // Created by hellovoidworld on 15/1/13. 6 // Copyright (c) 2015 hellovoidworld. all rights reserved. 7 // 8 9 # import "ViewController. h "10 11 @ interface ViewController () <UIGestureRecognizerDelegate> 12 13 @ property (weak, nonatomic) IBOutlet UIView * hvwView; 14 15 @ end 16 17 @ implementation ViewController 18 19-(void) viewDidLoad {20 [super viewDidLoad]; 21 // Do any additional setup after loading the view, typically from a nib. 22 23 // [self testTap]; 24 // [self testLongPress]; 25 // [self testSwipe]; 26 [self testRotation]; 27 [self testPinch]; 28 [self testPan]; 29} 30 31-(void) testTap {32 // create gesture reader 33 UITapGestureRecognizer * tapRec = [[UITapGestureRecognizer alloc] initWithTarget: self action: @ selector (tapRun :)]; 34. tapRec. numberOfTapsRequired = 3; // number of times to be clicked 35 tapRec. numberOfTouchesRequired = 2; // number of points to be clicked 36 at the same time // configure the gesture reader to control 38 [self. hvwView addGestureRecognizer: tapRec]; 39} 40 41/** method of event handling for the tap gesture */42-(void) tapRun :( UITapGestureRecognizer *) tapRec {43 NSLog (@ "tapRun"); 44} 45 46-(void) testLongPress {47 UILongPressGestureRecognizer * longRec = [[UILongPressGestureRecognizer alloc] ini TWithTarget: self action: @ selector (longPressRun :)]; 48 49 longRec. minimumPressDuration = 2; // long press effective time 50 longRec. allowableMovement = 50; // The allowable moving range of a long press. Unit: px 51 52 [self. hvwView addGestureRecognizer: longRec]; 53} 54 55-(void) longPressRun :( UILongPressGestureRecognizer *) rec {56 NSLog (@ "longPress"); 57} 58 59-(void) testSwipe {60 UISwipeGestureRecognizer * swipeRec = [UISwipeGestureRecognizer Alloc] initWithTarget: self action: @ selector (swipeRun :)]; 61 swipeRec. direction = uiswipegesturerecognizerdireright; // the direction of the Light sweep 62 63 [self. hvwView addGestureRecognizer: swipeRec]; 64} 65 66-(void) swipeRun :( UISwipeGestureRecognizer *) rec {67 NSLog (@ "swipe"); 68} 69 70-(void) testRotation {71 UIRotationGestureRecognizer * rotationRec = [[UIRotationGestureRecognizer alloc] initWithTarget: s Elf action: @ selector (rotationRun :)]; 72 rotationRec. delegate = self; 73 74 [self. hvwView addGestureRecognizer: rotationRec]; 75} 76 77-(void) rotationRun :( UIRotationGestureRecognizer *) rec {78 rec. view. transform = CGAffineTransformRotate (self. hvwView. transform, rec. rotation); 79 80 // be sure to reset !!! Otherwise, the rotation 81 rec will be added continuously when you press and hold the rotation. rotation = 0; 82} 83 84-(void) testPinch {85 UIPinchGestureRecognizer * rec = [[using alloc] initWithTarget: self action: @ selector (pinchRun :)]; 86 rec. delegate = self; 87 88 [self. hvwView addGestureRecognizer: rec]; 89} 90 91-(void) pinchRun :( UIPinchGestureRecognizer *) rec {92 rec. view. transform = CGAffineTransformScale (rec. view. transform, re C. scale, rec. scale); 93 94 // be sure to reset !!! Otherwise, press and hold the kneading button to overlay 95 rec. scale = 1; 96} 97 98-(void) testPan {99 UIPanGestureRecognizer * rec = [[UIPanGestureRecognizer alloc] initWithTarget: self action: @ selector (panRun :)]; 100 rec. delegate = self; 101 102 [self. hvwView addGestureRecognizer: rec]; 103} 104 105-(void) panRun :( UIPanGestureRecognizer *) rec {106 // get the drag distance from 107 CGPoint movedDistance = [rec translationInView: rec. view]; 108 CGPoint viewCenter = rec. view. center; 109 viewCenter. x + = movedDistance. x; 110 viewCenter. y + = movedDistance. y; 111 rec. view. center = viewCenter; 112 113 // reset the drag distance from 114 [rec setTranslation: CGPointZero inView: rec. view]; 115} 116 117-(void) didReceiveMemoryWarning {118 [super didReceiveMemoryWarning]; 119 // Dispose of any resources that can be recreated.120} 121 122-(BOOL) gestureRecognizer :( UIGestureRecognizer *) gestureRecognizer failed :( UIGestureRecognizer *) failed {123 124 // both gesture identifiers can use 125 return YES; 126} 127 128 @ end at the same time

  # Mark:Because the transform deformation is used for scaling and rotation, it cannot be normally used for dragging.