Dynamically change the name of the resource file to be used?

Question

It is possible to do something like:

if (colorScheme == 1)
    button.setBackgroundResource(R.drawable.button + "_1")

in order to use R.drawable.button_1 as the resource for this button in color scheme 1, if there are files named button_1.png, button_2.png, button_3.png in drawable folder. (dynamically use different resource file for the same UI element based on the color scheme being used?)

Thanks,

score 2 · Accepted Answer · answered May 18 '12 at 16:33

2

I've done something simular using getIdentifier():

int resId = context.getResources().getIdentifier("button_1","drawable",context.getPackageName());
button.setBackgroundResource(resId);

answered May 18 '12 at 16:33

wyoskibum

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That's a great idea! But do you know how could I do the same thing in xml file? – Jiechao Wang May 18 '12 at 18:41

score 1 · Answer 2 · answered May 19 '12 at 20:56

In order for it to be dynamic, there will be some code required. You can set up your layout in xml Like this:

<Button 
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Button" />

And then reference it in your code like this:

int resId = context.getResources().getIdentifier("button_1","drawable",context.getPackageName());
Button button = (Button view.findViewById(R.id.button1);
button.setBackgroundResource(resId);

I haven't tested this, but this should give you the idea.

score 0 · Answer 3 · answered May 18 '12 at 16:15

0

Put R.drawable.button_n in an array int res[] and then call them by button.setBackgroundResource(res[i])

answered May 18 '12 at 16:15

slybloty

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Dynamically change the name of the resource file to be used?

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