Android：在“项目”上单击“侦听器”以实现列表视图基本适配器实现

Question

Can someone point give me an example of a On item click listener used for a list view with base adapter?

My list view contains two text views and a check box. I want to create an on item click listener so that when a item (or row) is pressed, it ticks the corresponding row check box.

I tried to Google it but could not find any examples of it

Thank you

Answer 1

So, the adapter does not really matter, but i believe what you are trying to do is pretty simple, first you need to get a refrence to your ListView which i will refer to as listView

after setting your adapter you can use setOnItemClickListener to create the click action,

    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public boolean onItemClick(AdapterView<?> parent, View view, int position, long id) {
            //here you can use the position to determine what checkbox to check
            //this assumes that you have an array of your checkboxes as well. called checkbox
            checkBox[position].setChecked(!checkBox.isChecked());
        }
    });

Answer 2

It's actually quite simple, after you perform the action "setAdapter" You have to do this:

list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 

Toast.makeText(getApplicationContext(), "You click on position:"+position, Toast.LENGTH_SHORT).show();

        }
    });

Answer 3

The following code works correctly:

list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

  @Override
  public void onItemClick(AdapterView<?> parent, 
                          View view, int position, long id) { 

    Toast.makeText(getApplicationContext(), 
                   "You click on position:"+position, Toast.LENGTH_SHORT).show();
  }
});

But when I clicked items then it goes to other activities. What should I do?

Answer 4

You can access all the elements of your listview row using View parameter of OnItemClick() method. eg

    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, 
                      View view, int position, long id) { 
    // second parameter View view entire row object that is clicked  - in your case 
    // two text views and the checkbox
    // supposing your checkbox is set up with an id in the xml as idchkbox
    // You can access it by findview by id and set it true or false;
        android.widget.CheckBox  chkbox = view.findViewbyId(R.id.idchkbox);
        chkbox.setChecked = true;
        return;
    });