Custom dialog, with data passed in Bundle

In this example, a custom dialog is create in onCreateDialog(). The text in the EditText will be passed to the custom dialog via a bundle in onPrepareDialog(int, Dialog, Bundle).

If you use showDialog(int), the activity will call onCreateDialog() method the first time, and hang onto it thereafter. Any dialog that is created by this method will automatically be saved and restored for you, including whether it is showing.

If you would like an opportunity to prepare your dialog before it is shown, override onPrepareDialog(int, Dialog, Bundle). We will pass the text from main activity to our custom dialog, so we have to implement onPrepareDialog(int, Dialog, Bundle). And the text will be passed to dislog in bundle.

main activity

package com.AndroidCustomDialog;

import android.app.Activity;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class AndroidCustomDialogActivity extends Activity {
 
 EditText editTextPass;
 Button buttonOpenDialog;
 
 String KEY_TEXTPSS = "TEXTPSS";
 static final int CUSTOM_DIALOG_ID = 0;
 TextView dialog_TextView;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        editTextPass = (EditText)findViewById(R.id.textpass);
        buttonOpenDialog = (Button)findViewById(R.id.opendialog);
        buttonOpenDialog.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    Bundle bundle = new Bundle();
    bundle.putString(KEY_TEXTPSS, editTextPass.getText().toString());
    showDialog(CUSTOM_DIALOG_ID, bundle);
   }});
  
    }

 @Override
 protected Dialog onCreateDialog(int id) {

  Dialog dialog = null;
  
  switch(id) {
     case CUSTOM_DIALOG_ID:
      dialog = new Dialog(AndroidCustomDialogActivity.this);
      dialog.setContentView(R.layout.dialoglayout);
      dialog.setTitle("Custom Dialog");
      dialog_TextView = (TextView)dialog.findViewById(R.id.dialogtext);
      
      Button dialog_OK = (Button)dialog.findViewById(R.id.dialog_ok);
      dialog_OK.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View v) {
     // TODO Auto-generated method stub
     Toast.makeText(AndroidCustomDialogActivity.this, 
       "Dismiss by OK button", 
       Toast.LENGTH_LONG).show();
     dismissDialog(CUSTOM_DIALOG_ID);
    }});
      
      Button dialog_Cancel = (Button)dialog.findViewById(R.id.dialog_cancel);
      dialog_Cancel.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View v) {
     // TODO Auto-generated method stub
     Toast.makeText(AndroidCustomDialogActivity.this, 
       "Dismiss by Cancel button", 
       Toast.LENGTH_LONG).show();
     dismissDialog(CUSTOM_DIALOG_ID);
    }});
      
         break;
     }

  return dialog;
 }

 @Override
 protected void onPrepareDialog(int id, Dialog dialog, Bundle bundle) {
  // TODO Auto-generated method stub
  super.onPrepareDialog(id, dialog, bundle);

  switch(id) {
     case CUSTOM_DIALOG_ID:
      dialog_TextView.setText("Text passed to Dialog: " + bundle.getString(KEY_TEXTPSS));
         break;
     }
  
 }

}

main layout

<?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:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />
    <EditText
        android:id="@+id/textpass"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/opendialog"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open Dialog" />

</LinearLayout>

/res/layout/dialoglayout.xml, it's the layout of the custom dialog.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/customdialog"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="20dp">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"/>
    <TextView
        android:id="@+id/dialogtext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <Button
        android:id="@+id/dialog_ok"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="OK" />
    <Button
        android:id="@+id/dialog_cancel"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="cancel" />

</LinearLayout>

Next:
- Cancel and Dismiss Custom dialog