Changing background of a button in widget: Android

Question

I need to change background of a button programmatically. That button is placed in a widget.

I got an example of changing background color here , but this is only for changing color, and I want to use an image instead of a color.

Is there any way to apply a background image to a button programmatically?

Thank you

Answer 1

不用像您链接的示例那样使用setBackgroundColor ，您应该可以使用我认为的setBackgroundResource 。

Answer 2

In Your AppWidgetProvider class:

private RemoteViews v;
... in onUpdate:
v = new RemoteViews(context.getPackageName(), R.layout.widget);
...
icon = context.getResources().getIdentifier("ic_action_refresh_"+choosenTheme, "drawable", context.getPackageName());
v.setInt(R.id.wi_bu_refresh, "setBackgroundResource", icon);

Where:

icon is just resource id (found by getIdentifier method dynamically for every theme).

R.layout.widget is widget xml layout.

R.id.wi_bu_refresh is a button in widget layout, which background You want to change.

Hope it helps, cheers.

Answer 3

您可以使用此：

setInt(YouButtonId, "setBackgroundResource", YourImageResourceID); 

Answer 4

使用setBackgroundResource而不是setBackgroundColor 。

Answer 5

我认为您需要使用public void setBackgroundResource (int resid)