CODEWITHSUNDEEP
androidandroid-layout
user1923613
user1923613

Reputation: 636

How does one reference a view programmatically?

I've created a layout. All done programmatically. Now I have a button that's set to change the VISIBILITY of a view when clicked. Frankly, I don't know how to reference the view.

Here's part of the code:

    //my button to show pop-up
    Button btn_showPop = new Button(this);
    btn_showPop.setText("Pop-up");
    btn_showPop.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
            LayoutParams.WRAP_CONTENT));
    btn_showPop.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            hsv.post(new Runnable() {

                @Override
                public void run() {
                    if (Menu_Displayed) {
                        //pop-up
                        li_pop.setVisibility(View.VISIBLE); //how do I reference li_pop
                    } else {
                        //do nothing
                    }
                }
            });
        }
    });

    // pop-up:
    final LinearLayout li_pop = new LinearLayout(this);
    li_pop.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
            LayoutParams.FILL_PARENT));
    li_pop.setOrientation(1);// 1 is vertical
    li_pop.setBackgroundColor(Color.LTGRAY);
    li_pop.setVisibility(View.GONE);
    li_pop.setClickable(true);

Upvotes: 2

Views: 822

Answers (2)

Henry
Henry

Reputation: 43728

Move the line

final LinearLayout li_pop = new LinearLayout(this);

before the reference.

Upvotes: 0

ρяσѕρєя K
ρяσѕρєя K

Reputation: 132972

Change your code as for getting reference to dynamically created View

first decalre li_pop at class level

 LinearLayout li_pop;

second set id for li_pop at time of creation as :

li_pop = new LinearLayout(this);
li_pop.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
        LayoutParams.FILL_PARENT));

 li_pop.setId(599980); // set LinearLayout id here

now you can reference li_pop LinearLayout as on button click :

@Override
        public void onClick(View v) {
            hsv.post(new Runnable() {

                @Override
                public void run() {
                    if (Menu_Displayed) {
                        //pop-up
                        li_pop.setVisibility(View.VISIBLE); 
                      //OR
                 LinearLayout li_popnew=(LinearLayout)findViewById(599980);
                    li_popnew.setVisibility(View.VISIBLE);


                    } else {
                        //do nothing
                    }
                }
            });

Upvotes: 1

Related Questions