How to get the coordinate of a UIView - ios

Question

In my app, I use PanGesture.
Now, I have a UIImageView within my main view and I can drag my UIImageView within the main view.
To which axis in the main view I have to drag my UIImageView?

Answer 1

Try this to move your object
or link for best tutorials http://www.raywenderlich.com/6567/uigesturerecognizer-tutorial-in-ios-5-pinches-pans-and-more
- (IBAction)handlePan:(UIPanGestureRecognizer *)recognizer {
CGPoint translation = [recognizer translationInView:self.view];
recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,
recognizer.view.center.y + translation.y);
[recognizer setTranslation:CGPointMake(0, 0) inView:self.view];
if (recognizer.state == UIGestureRecognizerStateEnded) {
CGPoint velocity = [recognizer velocityInView:self.view];
CGFloat magnitude = sqrtf((velocity.x * velocity.x) + (velocity.y * velocity.y));
CGFloat slideMult = magnitude / 200;
NSLog(#"magnitude: %f, slideMult: %f", magnitude, slideMult);
float slideFactor = 0.1 * slideMult; // Increase for more of a slide
CGPoint finalPoint = CGPointMake(recognizer.view.center.x + (velocity.x * slideFactor),
recognizer.view.center.y + (velocity.y * slideFactor));
finalPoint.x = MIN(MAX(finalPoint.x, 0), self.view.bounds.size.width);
finalPoint.y = MIN(MAX(finalPoint.y, 0), self.view.bounds.size.height);
[UIView animateWithDuration:slideFactor*2 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
recognizer.view.center = finalPoint;
} completion:nil];
}
}

Answer 2

you can use frame property of a UIView class.which gives you top,left,width and height of the view.
NSLog(#"view.frame.origin.x : %f",view.frame.origin.x);
NSLog(#"view.frame.origin.y : %f",view.frame.origin.y);
NSLog(#"view.frame.size.width : %f",view.frame.size.width);
NSLog(#"view.frame.size.height : %f",view.frame.size.height)

Answer 3

You can use below APIs to translate your points from one view to other and vice versa.
- (CGPoint)convertPoint:(CGPoint)point toView:(UIView *)view;
- (CGPoint)convertPoint:(CGPoint)point fromView:(UIView *)view;

Answer 4

- (IBAction)panGestureReceived:(UIPanGestureRecognizer *)gesture {
if ([gesture state] == UIGestureRecognizerStateBegan) {
myVarToStoreTheBeganPosition = [gesture locationInView:self.view];
} else if ([gesture state] == UIGestureRecognizerStateEnded) {
CGPoint myNewPositionAtTheEnd = [gesture locationInView:self.view];
// and now handle it ;)
} else if ([gesture state] == UIGestureRecognizerStateChanged) {
CGPoint myNewPositionAtTheEnd = [gesture locationInView:self.view];
// and now handle it ;)
}
}