Question

I want to display ListPopupActivity on a button click but it is throwing this exception.

I have read thoroughly about this exception but couldn’t solve the problem
There is no jar file used in the project.

Here is the class:

public class MainActivity extends Activity {

    String[] listItems = {"item 1", "item 2 ", "list", "android", "item 3", "foobar", "bar", };
    Button btn;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn = (Button)findViewById(R.id.btn);
        btn.setOnClickListener(new View.OnClickListener() {

            @SuppressLint("NewApi")
            public void onClick(View v) {
                // TODO Auto-generated method stub
                  ListPopupWindow lpw = new ListPopupWindow(MainActivity.this);
                 lpw.setAdapter(new ArrayAdapter(MainActivity.this,  android.R.layout.simple_list_item_1, listItems));
                    lpw.setAnchorView(findViewById(R.id.btn));
                    lpw.setWidth(150);
                    lpw.setHeight(300);
                    lpw.show();
            }
        });
    }

Answer 1

The class ListPopupWindow was added in api level 11 (os version 3.0). I think you have set the targetSdkVersion to 11 in your manifest and trying to run your project in device that runs below api level 11.