この投稿のアクティビティを表示する。. To retrieve the Phone Number hints, first, configure the hint selector dialog by creating a HintRequest object. We are using setCardBackgroundColor () method to set color dynamically on CardView. Color Opacity Using XML In Android. I've created a selector for that purpose, which is stored in res/color/selector.xml and roughly looks like that: Enabled button after adding tint: Disabled button after adding tint: Disabled button without adding tint: Setting background tint to a … The following code snippet shows how to set a specific background color for a Column. 2. android recyclerview change background color selected item programmatically. android:endColor: This is the ending color of the gradient. If you do not find a color folder just create a new folder named "color". The problem here is that you cannot define the background color using a color selector, you need a drawable selector. colorButtonNormal); final int originalAlpha = Color. Step 4: Inside MainActivity.kt write the following code. Must be a child of a