Android realizes slide picture browser

Let's implement a slide picture browser:

In the bottom gallery view, select the picture in the gallery and a large picture will be displayed in the imageswitcher control above.

The renderings are shown in the figure below

Implementation method:

Add picture switching control imageswitcher and gallery view control Gallery RES / layout / main.xml to the layout file:

In the RES / values directory, create a file named attr.xml, and define a styleable object in the file to combine multiple attributes. Only one Android: galleryitembackground property provided by the system is specified here to set the background of each option. The specific code is as follows: RES / values / attr.xml:

MainActivity：

By clicking a picture in this way, you can select the picture and display it in the center. You can also drag the picture with your fingers to move the picture and display the selected picture above. As shown in the figure, it is the effect of switching the moment

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