Next, from the “Common” category in the “Palette”, drag a TextView into the layout. Also, in the “Layout” section, change the three drop-downs surrounding the square to be 8dp, setting margins on those sides:Īndroid Studio Attributes Pane, Showing 8dp MarginsĪlso, clear out the “text” attribute, leaving that blank. In the “Attributes” tool, change the “id” to isCompleted. Use the round grab handles to drag connections from the CheckBox to the top, bottom, and start sides of the ConstraintLayout: So, drag a CheckBox from the “Buttons” category in the “Palette” into the preview area:Īndroid Studio Layout Designer, Showing CheckBox Widget With all that in mind… let’s start off by setting up the CheckBox. Then, we can distinguish between clicks on the box and clicks on anything else in the row. Instead, we will place a TextView next to the CheckBox and use that for the description. Unfortunately, CheckBox does not support that.Īs a result, what we are going to do is use a CheckBox but leave its caption empty. Ideally, we would have the user click the caption to navigate to the detail screen, with clicks on the box to check and uncheck it. In this case, though, we also want the user to be able to click on a row in our RecyclerView and be able to navigate to a screen with the full details of this to-do item. Both serve to check (or uncheck) the CheckBox. The downside of this approach is that CheckBox does not distinguish between click events on the box itself and clicks on the caption. In principle, we could use that caption to show the description of the to-do item. In Android, a CheckBox widget consists of the actual “box” plus an associated text caption. We can then arrange to allow the users to mark to-do items as completed by checking the CheckBox. Then, click “OK” to close the dialog and create the mostly-empty resource file. In the dialog that appears, fill in todo_row as the “File name” and ensure that the “Root element” is set to. Right-click over the res/layout/ directory and choose “New” > “Layout resource file” from the context menu. Next, we need to define a layout resource to use for the rows in our roster of to-do items. You can learn more about RecyclerView in the " Employing RecyclerView" chapter of Elements of Android Jetpack!
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