UIView的Touch事件UIControlEvents详解

来源：互联网发布：举报淘宝店铺会怎么样编辑：程序博客网时间：2024/04/29 17:49

http://blog.csdn.net/heng615975867/article/details/39321081

首先，UIControlEvents有这个几种：

UIControlEventTouchDown = 1 << 0, // on all touch downs

UIControlEventTouchDownRepeat = 1 << 1, // on multiple touchdowns (tap count > 1)

UIControlEventTouchDragInside = 1 << 2,

UIControlEventTouchDragOutside = 1 << 3,

UIControlEventTouchDragEnter = 1 << 4,

UIControlEventTouchDragExit = 1 << 5,

UIControlEventTouchUpInside = 1 << 6,

UIControlEventTouchUpOutside = 1 << 7,

UIControlEventTouchCancel = 1 << 8,

---------------------------------------------------------------------------------------------------UIControlEventValueChanged = 1 << 12, // sliders, etc.

UIControlEventEditingDidBegin = 1 << 16, // UITextField

UIControlEventEditingChanged = 1 << 17,

UIControlEventEditingDidEnd = 1 << 18,

UIControlEventEditingDidEndOnExit = 1 << 19, // 'return key' ending editing

UIControlEventAllTouchEvents = 0x00000FFF, // for touch events

UIControlEventAllEditingEvents = 0x000F0000, // for UITextField

UIControlEventApplicationReserved = 0x0F000000, // range available for application use

UIControlEventSystemReserved = 0xF0000000, // range reserved for internal framework use

UIControlEventAllEvents = 0xFFFFFFFF

http://blog.163.com/cz_jdton/blog/static/92732504201282543017312/

在这个网友的日志里看到一些内容，大体如下：

UIControlEventTouchDown

单点触摸按下事件：用户点触屏幕，或者又有新手指落下的时候。

UIControlEventTouchDownRepeat

多点触摸按下事件，点触计数大于1：用户按下第二、三、或第四根手指的时候。

UIControlEventTouchDragInside

当一次触摸在控件窗口内拖动时。

UIControlEventTouchDragOutside

当一次触摸在控件窗口之外拖动时。

UIControlEventTouchDragEnter

当一次触摸从控件窗口之外拖动到内部时。

UIControlEventTouchDragExit

当一次触摸从控件窗口内部拖动到外部时。

UIControlEventTouchUpInside

所有在控件之内触摸抬起事件。

UIControlEventTouchUpOutside

所有在控件之外触摸抬起事件(点触必须开始与控件内部才会发送通知)。

UIControlEventTouchCancel

所有触摸取消事件，即一次触摸因为放上了太多手指而被取消，或者被上锁或者电话呼叫打断。

UIControlEventTouchChanged

当控件的值发生改变时，发送通知。用于滑块、分段控件、以及其他取值的控件。你可以配置滑块控件何时发送通知，在滑块被放下时发送，或者在被拖动时发送。

UIControlEventEditingDidBegin

当文本控件中开始编辑时发送通知。

UIControlEventEditingChanged

当文本控件中的文本被改变时发送通知。

UIControlEventEditingDidEnd

当文本控件中编辑结束时发送通知。

UIControlEventEditingDidOnExit

当文本控件内通过按下回车键（或等价行为）结束编辑时，发送通知。

UIControlEventAlltouchEvents

通知所有触摸事件。

UIControlEventAllEditingEvents

通知所有关于文本编辑的事件。

UIControlEventAllEvents

通知所有事件。

为了验证下，做了一个实验：

001//
002//  ViewController.m
003//  UIControlEvents
004//
005//  Created by WeiZhen_Liu on 13-4-27.
006//  Copyright (c) 2013年 WeiZhen_Liu. All rights reserved.
007//
008 
009#import "ViewController.h"
010 
011@interface ViewController ()
012 
013@end
014 
015@implementation ViewController
016 
017- (void)viewDidLoad
018{
019    [super viewDidLoad];
020    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
021    [button setFrame:CGRectMake(10, 100, 300, 40)];
022    [button setTitle:@"Test" forState:UIControlStateNormal];
023    [button addTarget:self action:@selector(TouchDown:) forControlEvents:UIControlEventTouchDown];
024    [button addTarget:self action:@selector(TouchDownRepeat:) forControlEvents:UIControlEventTouchDownRepeat];
025    [button addTarget:self action:@selector(TouchDragInside:) forControlEvents:UIControlEventTouchDragInside];
026    [button addTarget:self action:@selector(TouchDragOutside:) forControlEvents:UIControlEventTouchDragOutside];
027    [button addTarget:self action:@selector(TouchDragEnter:) forControlEvents:UIControlEventTouchDragEnter];
028    [button addTarget:self action:@selector(TouchDragExit:) forControlEvents:UIControlEventTouchDragExit];
029    [button addTarget:self action:@selector(TouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
030    [button addTarget:self action:@selector(TouchUpOutside:) forControlEvents:UIControlEventTouchUpOutside];
031    [button addTarget:self action:@selector(TouchCancel:) forControlEvents:UIControlEventTouchCancel];
032    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(buttonLongPress:)];
033    longPress.minimumPressDuration = 3;
034    [button addGestureRecognizer:longPress];
035    [longPress release];
036    [self.view addSubview:button];
037}
038 
039- (void)TouchDown:(id)sender
040{
041    NSLog(@"%@", NSStringFromSelector(_cmd));
042}
043 
044 
045- (void)TouchDownRepeat:(id)sender
046{
047    NSLog(@"%@", NSStringFromSelector(_cmd));
048}
049 
050- (void)TouchDragInside:(id)sender
051{
052    NSLog(@"%@", NSStringFromSelector(_cmd));
053}
054 
055- (void)TouchDragOutside:(id)sender
056{
057    NSLog(@"%@", NSStringFromSelector(_cmd));
058}
059 
060- (void)TouchDragEnter:(id)sender
061{
062    NSLog(@"%@", NSStringFromSelector(_cmd));
063}
064 
065- (void)TouchDragExit:(id)sender
066{
067    NSLog(@"%@", NSStringFromSelector(_cmd));
068}
069 
070- (void)TouchUpInside:(id)sender
071{
072    NSLog(@"%@", NSStringFromSelector(_cmd));
073}
074 
075- (void)TouchUpOutside:(id)sender
076{
077    NSLog(@"%@", NSStringFromSelector(_cmd));
078}
079 
080- (void)TouchCancel:(id)sender
081{
082    NSLog(@"%@", NSStringFromSelector(_cmd));
083}
084 
085- (void)didReceiveMemoryWarning
086{
087    [super didReceiveMemoryWarning];
088    // Dispose of any resources that can be recreated.
089}
090 
091- (void)buttonLongPress:(UILongPressGestureRecognizer *)gestureRecognizer
092{
093    if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
094        NSLog(@"%@", NSStringFromSelector(_cmd));
095    }
096}
097 
098@end
099 
100/**
101 * UIControlEventTouchDown           = 1 <<  0,      // on all touch downs
102 * UIControlEventTouchDownRepeat     = 1 <<  1,      // on multiple touchdowns (tap count > 1)
103 * UIControlEventTouchDragInside     = 1 <<  2,
104 * UIControlEventTouchDragOutside    = 1 <<  3,
105 * UIControlEventTouchDragEnter      = 1 <<  4,   // 注：我在模拟器上找了好久没找到这个东西什么时候触法
106 * UIControlEventTouchDragExit       = 1 <<  5,
107 * UIControlEventTouchUpInside       = 1 <<  6,
108 * UIControlEventTouchUpOutside      = 1 <<  7,
109 * UIControlEventTouchCancel         = 1 <<  8,  
110 * 按下松开，依次触发：   TouchDown:      TouchUpInside:
111 * 按下并在按钮内部拖动最后松开，依次触发：  TouchDown:    TouchDragInside:(多次)    TouchUpInside:
112 * 按着按钮拖动到按钮外不远处，依次触发： TouchDown:    TouchDragInside:(多次)    TouchUpInside:
113 * 按着按钮拖动到按钮外很远处，依次触发： TouchDown:    TouchDragInside:(多次)    TouchDragExit:    TouchDragOutside:(多次)    TouchUpOutside:
114 * 快速双击两下，依次触发： TouchDown:    TouchUpInside:    TouchDown:    TouchDownRepeat:    TouchUpInside:
115 * 快速击三下，依次触发： TouchDown:    TouchUpInside:    TouchDown:    TouchDownRepeat:    TouchUpInside:    TouchDown:    TouchDownRepeat:    TouchUpInside:
116 * 长按会依次触发： TouchDown:    buttonLongPress:    TouchCancel:
117 */
118------------------------------------------------------------------------------------------------------------

说到UIControlEvent,再谈下UIControl, UIControl继承于UIView，可以接收事件响应，看Demo:

01- (void)viewDidLoad
02{
03    [super viewDidLoad];
04    // UIControl : UIView
05    UIControl *control = [[UIControl alloc] initWithFrame:CGRectMake(100, 100, 200, 50)];
06    control.backgroundColor = [UIColor blueColor];
07    [control addTarget:self action:@selector(controlViewClick_1) forControlEvents:UIControlEventTouchUpInside];
08    [control addTarget:self action:@selector(controlViewClick_2) forControlEvents:UIControlEventTouchUpInside];
09    [control addTarget:self action:@selector(controlViewClick_3) forControlEvents:UIControlEventTouchUpInside];
10    [self.view addSubview:control];
11    [control release];
12}
13 
14- (void)controlViewClick_1
15{
16    NSLog(@"%@", NSStringFromSelector(_cmd));
17}
18 
19- (void)controlViewClick_2
20{
21    NSLog(@"%@", NSStringFromSelector(_cmd));
22}
23 
24- (void)controlViewClick_3
25{
26    NSLog(@"%@", NSStringFromSelector(_cmd));
27}

程序打印：

2013-05-01 12:36:28.119 UIControlEventsTestDemo[1152:c07] controlViewClick_1

2013-05-01 12:36:28.122 UIControlEventsTestDemo[1152:c07] controlViewClick_2

2013-05-01 12:36:28.122 UIControlEventsTestDemo[1152:c07] controlViewClick_3

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