Dynamic Content Custom Dialog In Android Programming

July 24, 2013 /
Android /
By Chetana

Description: This example will show how you can put dynamic content on a dialog and capture the screen in android.

NOTE:

The screen is captured in the first time only. After that, every time call getDrawingCache() return the same first screen.

Algorithm:

1.) Create a new project by File-> New -> Android Project name it DynamicContentCustomDialog.

2.) Write following into activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/screen"
>
<Button
android:id="@+id/capturescreen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Capture Screen"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Enter some text here which you will see on captured screen"
/>
<EditText
android:id="@+id/textin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>

3.) Create and write following into layout/dialog.xml:

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout_root"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="10dip"
android:paddingRight="10dip"
>
<TextView
android:id="@+id/textout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<ImageView
android:id="@+id/image"
android:layout_width="300px"
android:layout_height="300px"
/>
<Button
android:id="@+id/okdialogbutton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="OK"
/>
</LinearLayout>

4.) Run for output.

Steps:

1.) Create a project named DynamicContentCustomDialog and set the information as stated in the image.

Build Target: Android 4.2
Application Name: DynamicContentCustomDialog
Package Name: com.example.DynamicContentCustomDialog
Activity Name: MainActivity
Min SDK Version: 2.2

2.) Open MainActivity.java file and write following code there:

package com.example.dynamiccontentcustomdialog;

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

public class MainActivity extends Activity {

Bitmap bmScreen;

Dialog screenDialog;
static final int ID_SCREENDIALOG = 1;

ImageView bmImage;
Button btnScreenDialog_OK;
TextView TextOut;

View screen;
EditText EditTextIn;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
screen = (View)findViewById(R.id.screen);
Button btnCaptureScreen = (Button)findViewById(R.id.capturescreen);
EditTextIn = (EditText)findViewById(R.id.textin);

btnCaptureScreen.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
screen.setDrawingCacheEnabled(true);
bmScreen = screen.getDrawingCache();
showDialog(ID_SCREENDIALOG);
}});
}

@Override
protected Dialog onCreateDialog(int id) {
// TODO Auto-generated method stub

screenDialog = null;
switch(id){
case(ID_SCREENDIALOG):
screenDialog = new Dialog(this);
screenDialog.setContentView(R.layout.dialog);
bmImage = (ImageView)screenDialog.findViewById(R.id.image);
TextOut = (TextView)screenDialog.findViewById(R.id.textout);
btnScreenDialog_OK = (Button)screenDialog.findViewById(R.id.okdialogbutton);
btnScreenDialog_OK.setOnClickListener(btnScreenDialog_OKOnClickListener);
}
return screenDialog;
}

@Override
protected void onPrepareDialog(int id, Dialog dialog) {
// TODO Auto-generated method stub
switch(id){
case(ID_SCREENDIALOG):
dialog.setTitle("Captured Screen");
TextOut.setText(EditTextIn.getText().toString());
bmImage.setImageBitmap(bmScreen);
break;
}
}

private Button.OnClickListener btnScreenDialog_OKOnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
screenDialog.dismiss();
}};
}

3.) Compile and build the project.

Output

Dynamic Content Custom Dialog In Android Programming

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