CODEWITHSUNDEEP
androidandroid-layoutview
JuiCe
JuiCe

Reputation: 4201

How can I reference layout files other than the current one?

In my application I call setContentView( layout1.xml );, I want to access an element within a DIFFERENT layout file, lets call it layout2.xml.

I have tried 

view1 = (View) findViewById( R.layout.layout2 );

and also added an id to the layout and tried 

view1 = (View) findViewById( r.id.layout2 );

Neither of these work. They compile just fine but when I run it, as soon as i try to call something like

button1 = view1.findViewById( R.id.button1 );

I get a null pointer exception.

Upvotes: 0

Views: 93

Answers (3)

andro
andro

Reputation: 977

You can access an element from layout2 by inflating it first as follows:

    LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
    LinearLayout layout = (LinearLayout)inflater.inflate(R.layout.layout2, null);
    //or View view = (View)inflater.inflate(R.layout.layout2, null);
    Button button = (Button)layout.findViewById(R.id.button1);
    //add code for button

Upvotes: 2

askilondz
askilondz

Reputation: 3294

You need to use a layout inflater to get your second layout like so:

 View view = LayoutInflater.from(getBaseContext()).inflate(R.layout.layout2, null);

And then reference your button from that layout:

Button button1 = view.findViewById( R.id.button1 );

Upvotes: 2

codeMagic
codeMagic

Reputation: 44571

You may consider looking HERE. You can create layouts and reuse them in different layouts by using include in the XML

Upvotes: 0

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