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[英]when I am adding Long Press Gesture on uiimageview in Table View Cell .Uiimageview Is not showing With correct Image
[英]Long Press gesture and movement of uiimageview?
我有一個帶有UILongPressGestureRecognizer
的UIImageView
,當檢測到長UILongPressGestureRecognizer
發送動作。
我確實在UIImageView
上啟用了用戶交互。 但是,我也有一種手動滾動,可以使用touchesBegan
和touchesMoved
方法移動UIImageView
。
禁用用戶交互時,僅滾動工作。 啟用用戶交互時,只有長按手勢識別器才能工作。
我怎樣才能使它們同時工作?
如有必要,可以共享代碼,但我不認為這個問題需要它。
UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] init];
[gestureRecognizer addTarget:self action:@selector(imgLongPressed:)];
gestureRecognizer.delegate = self;
[imgview addGestureRecognizer: gestureRecognizer];
- (void) imgLongPressed:(UILongPressGestureRecognizer*)sender
{
UIImageView *view_ =(UIImageView*) sender.view;
CGPoint point = [sender locationInView:view_.superview];
if (sender.state == UIGestureRecognizerStateBegan)
{
}
else if (sender.state == UIGestureRecognizerStateChanged)
{
}
else if (sender.state == UIGestureRecognizerStateEnded)
{
}
}
手勢識別器總是優先考慮並覆蓋touchesBegan:
style events。 您必須使用相同的API /技術實現這兩種行為。
首先,您必須使用手勢來移動圖像,如下所示。
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[panRecognizer setDelegate:self];
[vwBigImage addGestureRecognizer:panRecognizer];
將被調用的函數如下所示..
-(void)move:(id)sender {
CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:yourview];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) {
_firstX = [yourimageview center].x;//declare CGFloat _firstX; in .h file
_firstY = [yourimageview center].y;//declare CGFloat _firstY; in .h file
}
translatedPoint = CGPointMake(_firstX+translatedPoint.x, _firstY+translatedPoint.y);
[yourimageview setCenter:translatedPoint];
}
現在你的兩個手勢都會被調用。
讓我知道它的工作與否!
快樂的編碼!!!!
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