Android sets the zoom of the finger slide control through ImageView

ImageView sets the finger sliding and zooming effect. Please learn the specific implementation steps through this article!

Implementation steps

1. ImageView sets scaletype to Android: scaletype = "matrix"

2. Set the setontouchlistener of ImageView and rewrite the code inside

3. Create a new matrix,

In this way, the size of the image will change

It should be noted that the ImageView must set scaletype to matrix, otherwise the image cannot be scaled. In addition, the size of bitmap can also be changed through matrix

You can also use the custom control ImageView to override the ontouchevent. This article is implemented by using the custom control

code

Custom control code, mainly rewritten ontouchevent code

ImageView code

summary

The above is what Xiaobian introduced to you. Android sets finger sliding control scaling through ImageView. I hope it will be helpful to you. If you have any questions, please leave me a message, and Xiaobian will reply to you in time. Thank you very much for your support for the programming tips website!