如何在ListView中控制LinearLayout的子级？

Question

I just set up my ArrayAdapter to convertView to my favor , but now I wonder how to control the children of the LinearLayouts am using in that listview , lets say I have a TextView in the Linearlayout , I want to call setText , but I don't know how , or maybe I have a button which I want to call setOnClickListener , I don't know how !

Here is my getView code :

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        if (convertView == null){
            convertView = inf.inflate(R.layout.normal_row, parent , false);
        }
        switch(position){
        case(0):
            // here is where my first LinearLayout goes , containing an Image and Switch which I need to program in onCheckedChangeListener ...
            convertView = (LinearLayout) inf.inflate(R.layout.row_switch, parent,false);

            break;

        case(1)
        // here I need to set the Text for the following two options on some basis , they are both linearLayouts containing a single textView which I want to call setText for each case  1 and 2.
             break;
            case(2)

        }

Answer 1

Let's say your normal_row layout has a TextView in it with the id @id/my_text_view. Then you would set the text like

TextView view = (TextView) convertView.findViewById(R.id.my_text_view);
view.setText("Some text");

You can access anything in the layout you've inflated by its id in a similar way.

One thing to note though is there seem to be two types of views that you're inflating. Let's say that you try to use the code I gave you, but my_text_view is only in normal_row. Then if you've inflated the row_switch view, the findViewById() will return null because it can not find a view with the given id.

Answer 2

Use onItemClick and find your view by the view that the OnItemClickListener provides you!

For example: `mListView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {

        }

    });`

By the passed View find your textview or your button inside every listView children.

Example: TextView tempTextView = (TextView) arg1.findViewById(R.id.myTextView);

The id of the textview is the one you assigned to it in your inflated layout for every row!

Answer 3

TextView textview = (TextView) convertView.findById(R.id.txt); 
text.setText("textview");

Button btn  = (Button) convertView.findById(R.id.btn); 

btn.setTag(textview); 

btn.setOnClickListener(...)
{
   onClick(..){
      TextView t = (Textview)btn.getTag():
      t.setText("new value")

   }
}

i suggest you to look at the question which i replied before.