CODEWITHSUNDEEP
androidandroid-layout
Andrey Kon
Andrey Kon

Reputation: 1149

Moving a view with a finger

I began to study Android not so long ago and have a question relating to which approach I should use to solve the simple task. Let's suppose I have a view (maybe, a button) and I want user to be able to move it across the screen with a finger. Until AbsoluteLayout was deprecated, the right approach seamed obvious. I would've just changed position of my view based on corresponding events. But what is right now?

Upvotes: 3

Views: 11196

Answers (3)

ravyoli
ravyoli

Reputation: 718

Im using FrameLayout and update marginLeft and marginTop

You can add multiple children to frame layout, though this is not recommended because of multiple resolutions issues.

from the android docs:

FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other. You can, however, add multiple children to a FrameLayout and control their position within the FrameLayout by assigning gravity to each child, using the android:layout_gravity attribute.

This "warning" is not applicable in your case because you are explicitly setting the margins according to the user touch event.

Upvotes: 0

Sudarshan Bhat
Sudarshan Bhat

Reputation: 3772

Create a custom view of your own and add a onTouch event listener. It is very simple. Explained very well here.

Upvotes: 5

Sparky
Sparky

Reputation: 8477

If you're trying to move your views in order to navigate through your application or page through images in a gallery, Android provides a collection of widgets to do things like that. If you're trying to, say, pan across a large image, maybe this will help: Image in Canvas with touch events

Upvotes: 0

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