I have been trying to figure out this problem since yesterday but I am not getting anywhere. The tutorials show the popupwindow dismiss function being called with a button however I have a MenuItem which creates the popup window, inside the window is a cancel button. I want the window to close when the cancel button is pressed. Here is the code
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent intent;
switch (item.getItemId()) {
case R.id.ResetP:
passwordWindow();
break;}
The code for the passwordWindow()
private void passwordWindow()
{
layoutInflater = (LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup container = (ViewGroup) layoutInflater.inflate(R.layout.password_layout,null);
popupWindow = new PopupWindow(container,(int)(width * .6),(int)(height*.3),false);
popupWindow.showAtLocation(relativeLayout, Gravity.NO_GRAVITY,(int)(width * .2),(int)(height *.3));
Button btn = (Button) findViewById(R.id.btn_cancel);//This button is in password_layout.xml file
btn.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View view) {
popupWindow.dismiss();
}
});
}
My Password window has a OK button and a cancel button, I want the window to close when the cancel button is pressed however I get this error
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
This is making me pull my hair out, can someone please help me Thanks
