Building Android UIs with Custom Views

Creating a simple view from scratch

Now that we've seen how to modify an already existing View, we'll see a more complex example: how to create our own custom view from scratch!

Let's start by creating an empty class that extends from View:

package com.packt.rrafols.customview; 
 
import android.content.Context; 
import android.util.AttributeSet; 
import android.view.View; 
 
public class OwnCustomView extends View { 
     
    public OwnCustomView(Context context, AttributeSet attributeSet) { 
        super(context, attributeSet); 
    } 
     
} 

We will now add the same code as the previous example to draw a red background:

package com.packt.rrafols.customview; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.util.AttributeSet; ...