Popup Window with dynamic content

This example show how to update content of popup window using Java code at run-time, instead of hard-coded in XML. The TextView (textOut) of Popup Window will be set according to another EditText (textIn) on main layout, before the Popup Window shown.

Popup Window with dynamic content

MainActivity.java

package com.example.androidpopupwindow;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.PopupWindow;
import android.widget.Spinner;
import android.widget.TextView;
import android.app.Activity;

public class MainActivity extends Activity {
 
 String[] DayOfWeek = {"Sunday", "Monday", "Tuesday", 
   "Wednesday", "Thursday", "Friday", "Saturday"};

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  final EditText textIn = (EditText)findViewById(R.id.textin);

  final Button btnOpenPopup = (Button) findViewById(R.id.openpopup);
  btnOpenPopup.setOnClickListener(new Button.OnClickListener() {

   @Override
   public void onClick(View arg0) {
    LayoutInflater layoutInflater = 
      (LayoutInflater)getBaseContext()
      .getSystemService(LAYOUT_INFLATER_SERVICE);
    View popupView = layoutInflater.inflate(R.layout.popup, null);
    final PopupWindow popupWindow = new PopupWindow(
      popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    
    //Update TextView in PopupWindow dynamically
    TextView textOut = (TextView)popupView.findViewById(R.id.textout);
    String stringOut = textIn.getText().toString();
    if(!stringOut.equals("")){
     textOut.setText(stringOut);
    }
    
    Button btnDismiss = (Button)popupView.findViewById(R.id.dismiss);
    
    Spinner popupSpinner = (Spinner)popupView.findViewById(R.id.popupspinner);
    
    ArrayAdapter<String> adapter = 
      new ArrayAdapter<String>(MainActivity.this, 
        android.R.layout.simple_spinner_item, DayOfWeek);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    popupSpinner.setAdapter(adapter);
    
    btnDismiss.setOnClickListener(new Button.OnClickListener(){

     @Override
     public void onClick(View v) {
      popupWindow.dismiss();
     }});
    
    popupWindow.showAsDropDown(btnOpenPopup, 50, -30);
    
    
   }

  });
 }

}

/res/layout/activity_main.xml, main layout.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold"
        android:layout_gravity="center_horizontal"
        android:autoLink="web" />
    
    <EditText
        android:id="@+id/textin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/openpopup"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open Popup Window" />
    
    <ImageView 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:src="@drawable/ic_launcher" />

</LinearLayout>

/res/layout/popup.xml, layout of the Popup Window.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/customborder"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="1dp"
        android:orientation="vertical" >
        
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="20dp"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/textout"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="It is a PopupWindow" />

            <ImageView
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_launcher" />

            <Spinner
                android:id="@+id/popupspinner"
                android:spinnerMode="dialog"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />

            <Button
                android:id="@+id/dismiss"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="Dismiss" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

/res/drawable/customborder.xml, define the custom border of the Popup Window.

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle">
  <corners
      android:topLeftRadius="0dp"
      android:topRightRadius="30dp"
      android:bottomRightRadius="30dp"
      android:bottomLeftRadius="30dp" />
  <stroke
      android:width="3dp"
      android:color="@android:color/background_dark" />
  <solid 
      android:color="#40300030"/>
</shape>

Download the files.