Question

I want to merge between layout file and xml file.
But, my problem, is how can I do it dynamically.

I mean that I have general toolbar file that contains: my app icon, the activity name and linearlayout space for button. I want to merge this toolbar to each activity, so that all activity could put its own buttons in the linearlayout in the toolbar.

I have try to do that, I wrote toolbar file that called toolbar.xml in the layout folder.
And each activity included this toobar like that: <include layout="@layout/toolbar.xml" />, but I do not know how to insert the buttons.

Can I do that with the xml of the activity only?

Answer 1

To add buttons from code (which I guess is what you want to do) you just need to have a container where your buttons shall be inserted into. You can just add <LinearLayout> to your layout XML file (ensure your layout got id, i.e.:

<LinearLayout>
   ...
   android:id="@+id/button_container"`
</LinearLayout>

Them, in your code create your button as any other object:

Button myButton = new Button( mContext );

then find your button container:

LinearLayout buttonContainer = findViewById(R.id.button_container);

and add your button to it:

buttonContainer.addView( myButton );

To find out more see ViewGroup documentation