Solve the problem of getting custom colors in Android custom view

Long time no see, I've been a little busy recently, and I haven't posted an article for a long time. The day before yesterday, a junior student encountered this problem while writing a project, so he wrote an article.

Project scenario:

Android Custom View Set Color in Layout

Question description: The following is the code of my junior

//attrs file <attr name="leftcolor" format="color"/>
 <attr name="rightcolor" format="color"/>
//Java file code, get color int leftcolor=("/apk/res-auto","leftcolor",);
 int rightcolor=("/apk/res-auto","rightcolor",);
//In the layout app:leftcolor="@color/colorPrimary"
 app:rightcolor="#ff0000"

Problem: Rightcolor can get color, but left can't. (You can get it by writing #ff0000)

analyze:

After writing a demo, there were indeed similar problems. I tried several methods myself but couldn't solve them. So I looked at the following Android source code controls and came up with the solution as follows

Solution:

//attrs file <attr name="leftcolor" format="reference|color"/>
 <attr name="rightcolor" format="reference|color"/>
//java file ---TaiJiView is a custom view name //Get custom properties. TypedArray ta = (attrs, );
 //Get color int leftcolor = (.TaiJiView_leftcolor, );
 int rightcolor=(.TaiJiView_rightcolor, );
 //Recycle ();
//In the layout app:leftcolor="@color/colorPrimary"
 app:rightcolor="#ff0000"

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