Gallery of Android UI control to realize drag picture browsing effect

We know that smart phones now have such a function, that is, when you are browsing pictures. It is not a hard click button, but can realize the drag and scratch effect of fingers. Enable users to have a better interactive experience, but how is this effect achieved?

In Android, the drag effect is realized through the gallery.

Various effects can be achieved through gallery. This article only briefly talks about its usage and some subsequent effects

Do a clean-up when you have a chance.

First look at its simple implementation! This example realizes the function of setting background by selecting pictures!

However, it should be noted that the picture should not be too large, otherwise it is easy to overflow memory, and Android does not support large pictures well!

Let's see the effect after switching

Look at resetting a background picture!

How about a simple effect!

The following is the specific implementation method:

XML file:

Mainactivity file:

Implement an imageadapter to inherit from baseadapter

Over! A simple picture drag display plus the small function of setting the background picture is realized.

The following is the complete code part of the project: Gallery realizes the drag picture browsing effect

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.