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我的應用程序處理圖像視圖,並且我想通過觸摸將圖像全部拖到視圖上。通過觸摸拖動圖像視圖
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{ // This gets you starting position of
UITouch *touch = [ [ event allTouches ] anyObject ] ;
float touchXBeginPoint = [ touch locationInView:touch.view ].x ;
float touchYBeginPoint = [ touch locationInView:touch.view ].y ;
// Calculate the offset between the current image center and the touched points.
touchOffset = hairImage.center.x - touchXBeginPoint;
touchOffset1=hairImage.center.y-touchYBeginPoint;
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [ [ event allTouches ] anyObject ] ;
float distanceMoved =([ touch locationInView:touch.view ].x + touchOffset) - hairImage.center.x ;
float distanceMoved1=([touch locationInView:touch.view].y+touchOffset)-hairImage.center.y;
float newX = hairImage.center.x + distanceMoved;//+distanceMoved1 ;
float newY=hairImage.center.y+distanceMoved1;
if(newX > 70 && newX < 150){ // setting the boundaries
hairImage.center = CGPointMake(newX, hairImage.center.y) ;}
if(newY>100 && newY<180){
hairImage.center=CGPointMake(newY, hairImage.center.x);
}}
這是代碼。在這裏,我可以沿着X方向成功移動imageview,但我的目標是將imageview全部移到視圖中。對您的問題