Simple implementation of Android verification code

Simple implementation of Android verification code

We often require you to enter a verification code when logging in or registering. Here is a brief introduction to a method. The results are as follows

The first is to obtain the random combination of four letters. Here, I store 26 letters in an array, then randomly generate four subscript values, and take the letters corresponding to the four subscript values as the verification code.

Customize a CodeView to draw the verification code. It is mainly operated in the OnDraw method. It is not proficient in learning and can not control the size and position in onmeasure.

It is OK to set the control and pass in four characters. When verifying whether the input is correct, the case problem is taken into account, so all the input letters are converted to uppercase, which is generally case insensitive.

I think there are still many deficiencies. Continue to improve in the future!

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