iPhone開發筆記──手勢操作：…
阿新 • • 發佈：2019-02-02
1.手指點選事件
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//單指單擊
UITapGestureRecognizer *singleFingerOne = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleSingleFingerEvent:)];
singleFingerOne.numberOfTouchesRequired = 1; //手指數
singleFingerOne.numberOfTapsRequired = 1; //tap次數
singleFingerOne.delegate = self;
//單指雙擊
UITapGestureRecognizer *singleFingerTwo = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleSingleFingerEvent:)];
singleFingerTwo.numberOfTouchesRequired = 1;
singleFingerTwo.numberOfTapsRequired = 2;
singleFingerTwo.delegate = self;
//雙指單擊
UITapGestureRecognizer *doubleFingerOne = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleDoubleFingerEvent:)];
doubleFingerOne.numberOfTouchesRequired = 2;
doubleFingerOne.numberOfTapsRequired = 1;
doubleFingerOne.delegate = self;
UITapGestureRecognizer *doubleFingerTwo = [[UITapGestureRecognizer
alloc] initWithTarget:self
action:@selector(handleDoubleFingerEvent:)];
doubleFingerTwo.numberOfTouchesRequired = 2;
doubleFingerTwo.numberOfTapsRequired = 2;
doubleFingerTwo.delegate = self;
//如果不加下面的話，當單指雙擊時，會先呼叫單指單擊中的處理，再呼叫單指雙擊中的處理
[singleFingerOne requireGestureRecognizerToFail:singleFingerTwo];
//同理雙指亦是如此
[doubleFingerOne requireGestureRecognizerToFail:doubleFingerTwo];
[self.view addGestureRecognizer:singleFingerOne];
[self.view addGestureRecognizer:singleFingerTwo];
[self.view addGestureRecognizer:doubleFingerOne];
[self.view addGestureRecognizer:doubleFingerTwo];
[singleFingerOne release];
[singleFingerTwo release];
[doubleFingerOne release];
[doubleFingerTwo release];
//處理單指事件
- (void)handleSingleFingerEvent:(UITapGestureRecognizer *)sender
{
if
(sender.numberOfTapsRequired == 1) {
//單指單擊
NSLog(@"單指單擊");
}else
if(sender.numberOfTapsRequired == 2){
//單指雙擊
NSLog(@"單指雙擊");
}
}
//處理雙指事件
- (void)handleDoubleFingerEvent:(UITapGestureRecognizer *)sender
{
if
(sender.numberOfTapsRequired == 1) {
//雙指單擊
NSLog(@"雙指單擊");
}else
if(sender.numberOfTapsRequired == 2){
//雙指雙擊
NSLog(@"雙指雙擊");
}
}
2.手指滑動事件
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UISwipeGestureRecognizer *recognizer;
recognizer =
[[UISwipeGestureRecognizer alloc]initWithTarget:self
action:@selector(handleSwipeFrom:)];
[recognizer
setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view]
addGestureRecognizer:recognizer];
[recognizer release];
recognizer =
[[UISwipeGestureRecognizer alloc]initWithTarget:self
action:@selector(handleSwipeFrom:)];
[recognizer
setDirection:(UISwipeGestureRecognizerDirectionLeft)];
[[self view]
addGestureRecognizer:recognizer];
[recognizer release];
recognizer =
[[UISwipeGestureRecognizer alloc]initWithTarget:self
action:@selector(handleSwipeFrom:)];
[recognizer
setDirection:(UISwipeGestureRecognizerDirectionUp)];
[[self view]
addGestureRecognizer:recognizer];
[recognizer release];
recognizer =
[[UISwipeGestureRecognizer alloc]initWithTarget:self
action:@selector(handleSwipeFrom:)];
[recognizer
setDirection:(UISwipeGestureRecognizerDirectionDown)];
[[self view]
addGestureRecognizer:recognizer];
[recognizer release];
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer
{
if(recognizer.direction==UISwipeGestureRecognizerDirectionLeft||recognizer.direction==UISwipeGestureRecognizerDirectionDown)
{
NSLog(@"swipe left");
//執行程式
[self ReadNextPage];
}
if(recognizer.direction==UISwipeGestureRecognizerDirectionRight||recognizer.direction
== UISwipeGestureRecognizerDirectionUp) {
NSLog(@"swipe right");
//執行程式
[self ReadLastPage];
}
}