Call setDraggingEnabled: to make a UIView draggable.

You can restrict the dragging area throught setDraggingEdgeInsets:.

As Apple API docs said:

Positive values cause the frame to be inset (or shrunk) by the specified amount. Negative values cause the frame to be outset (or expanded) by the specified amount.

So, if you want to make UIView draggable to the left, restricting top and bottom, you can set your UIEdgeInsets as:

[self.myview setDraggingEdgeInsets:UIEdgeInsetsMake(0.f, -self.myview.frame.size.width, 0.f, 0.f)];

- (void)setDraggingEnabled:(BOOL)draggingEnabled;
- (BOOL)isDraggingEnabled;

- (void)setDraggingEdgeInsets:(UIEdgeInsets)edgeInsets;
- (UIEdgeInsets)draggingEdgeInsets;

TXDragAndDrop is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "TXDragAndDrop"

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