按钮没有调用OnClickListener

Question

I've just created a ScrollView that has a LinearLayout inside. This LinearLayout has a button on the top, and there is nothing I can do. The button's onClickListener is never called.

I want to detect when a user presses the LinearLayout and when presses the Button.

Here is my code:

    LinearLayout layout = new LinearLayout(this);
    layout.setOrientation(LinearLayout.VERTICAL);
    scrollView.addView(layout);
    layout.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            layoutClick(v);
        }
    });

    LinearLayout.LayoutParams headerParam = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT,getDpFromPixel(50));

    //bottone per l'header
    Button headerButton = new Button(this);
    headerButton.setId(findId());
    headerButton.setLayoutParams(headerParam);
    //headerButton.setBackground(getResources().getColor(R.color.button_backgroud));
    //headerButton.setBackground(getResources().getColor(R.color.button_backgroud));
    Drawable d = getResources().getDrawable(R.color.button_backgroud);
    headerButton.setBackground(d);
    headerButton.setText(title);
    headerButton.setTextColor(getResources().getColor(R.color.white));
    headerButton.setGravity(Gravity.CENTER_VERTICAL);
    headerButton.setPadding(70, 0, 0, 0);
    headerButton.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_START);
    headerButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            buttonPressed(v);
            System.out.println("button pressed!!");
        }
    });
    layout.addView(headerButton);

The "layoutClick" function is working, the headerButton is never calling the "buttonPressed" function or printing to console..

Answer 1

Try making focusable the button

headerButton.setFocusable(true);
headerButton.setClickable(true);