copy file from Assets to SDcard in Android Example
Definition : 16. Create an application to read file from asset folder and copy it in memory card.
File Name : E16.java
package bsr.exa;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
MediaPlayer Example in Android
Definition : 17) Create an application that will play a media file from the memory card.
File Name : E17Activity.java
package bsr.exa;
import bsr.exa.R;
import android.app.Activity;
import android.content.Context;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import bsr.exa.R;
import android.app.Activity;
import android.content.Context;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
read file from sdcard in android example
Definition : 19) Create an application to read file from the sdcard and display that file content to the screen.
File Name : E19Activity.java
package bsr.exa;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
onTouchEvent Example in Android
Definition : Create an application to draw line on the screen as user drag his finger.
File Name : E20.java
package bsr.exa;
import android.app.Activity;
import android.os.Bundle;
public class E20 extends Activity {
/** @author Bipin S Rupadiya , www.bipinrupadiya.blogspot.com
*
*
* 20) Create an application to draw line on the screen as user drag his finger.
*
* */
import android.app.Activity;
import android.os.Bundle;
public class E20 extends Activity {
/** @author Bipin S Rupadiya , www.bipinrupadiya.blogspot.com
*
*
* 20) Create an application to draw line on the screen as user drag his finger.
*
* */
Labels:
Android,
Mobile Computing
Android Sending SMS Example
Definition : Create an application to send message between two emulators
File Name : E21Activity.java
Camera Example in Android
Definition: Create an application to take picture using native application
File Name :
package bsr.exa;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class E22Activity extends Activity {
/** Called when the activity is first created. */
ImageView iv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
iv=(ImageView)findViewById(R.id.imageView1);
Button b =(Button)findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, 0);
}
});
}
protected void OnActivityResult(int requestCode,int resultcode,Intent data)
{
Bitmap bm=(Bitmap)data.getExtras().get("data");
iv.setImageBitmap(bm);
}
}
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class E22Activity extends Activity {
/** Called when the activity is first created. */
ImageView iv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
iv=(ImageView)findViewById(R.id.imageView1);
Button b =(Button)findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, 0);
}
});
}
protected void OnActivityResult(int requestCode,int resultcode,Intent data)
{
Bitmap bm=(Bitmap)data.getExtras().get("data");
iv.setImageBitmap(bm);
}
}
File Name : AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="bsr.exa"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.CAMERA"></uses-permission>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".E22Activity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="bsr.exa"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.CAMERA"></uses-permission>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".E22Activity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
MediaStore.Images Content Provider example in android
Definition: 23) Create an application to pick up any image from the native application gallery and display it on the screen
File Name : EX23.java
package bsr.exa;
import java.io.File;
import java.io.FileInputStream;
import android.app.Activity;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.provider.MediaStore.Images.Media;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class E23 extends Activity {
/**
*
* @author Bipin S Rupadiya , www.bipinrupadiya.com
*
* 23) Create an application to pick up any image from the native application gallery and display it on the screen.
*
* Note : First add a file to sdcard and check with media scanner (from dev tools)
**/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try
{
String[] projection={Media.DISPLAY_NAME, Media.DATA, Media.SIZE};
Cursor c=managedQuery(Media.EXTERNAL_CONTENT_URI, projection, null, null, null);
ImageView ivImage=(ImageView)findViewById(R.id.myImg);
File file = null;
String imgName = null ;
if(c.getCount()>0)
{
while(c.moveToNext())
{
file=new File(c.getString(1)); //after completing loop, it take last image from native Gallery to display.
imgName=c.getString(0);
}
c.close();
FileInputStream fis=new FileInputStream(file);
byte[] buffer=new byte[fis.available()];
fis.read(buffer);
Bitmap bm=BitmapFactory.decodeByteArray(buffer, 0, buffer.length);
TextView txtTitle=(TextView)findViewById(R.id.txtTitle);
txtTitle.setText(imgName.toString());
ivImage.setImageBitmap(bm);
}
}
catch(Exception e)
{
Toast.makeText(E23.this, "Error: "+e, Toast.LENGTH_LONG).show();
}
}
}
import java.io.File;
import java.io.FileInputStream;
import android.app.Activity;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.provider.MediaStore.Images.Media;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class E23 extends Activity {
/**
*
* @author Bipin S Rupadiya , www.bipinrupadiya.com
*
* 23) Create an application to pick up any image from the native application gallery and display it on the screen.
*
* Note : First add a file to sdcard and check with media scanner (from dev tools)
**/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try
{
String[] projection={Media.DISPLAY_NAME, Media.DATA, Media.SIZE};
Cursor c=managedQuery(Media.EXTERNAL_CONTENT_URI, projection, null, null, null);
ImageView ivImage=(ImageView)findViewById(R.id.myImg);
File file = null;
String imgName = null ;
if(c.getCount()>0)
{
while(c.moveToNext())
{
file=new File(c.getString(1)); //after completing loop, it take last image from native Gallery to display.
imgName=c.getString(0);
}
c.close();
FileInputStream fis=new FileInputStream(file);
byte[] buffer=new byte[fis.available()];
fis.read(buffer);
Bitmap bm=BitmapFactory.decodeByteArray(buffer, 0, buffer.length);
TextView txtTitle=(TextView)findViewById(R.id.txtTitle);
txtTitle.setText(imgName.toString());
ivImage.setImageBitmap(bm);
}
}
catch(Exception e)
{
Toast.makeText(E23.this, "Error: "+e, Toast.LENGTH_LONG).show();
}
}
}
File Name :AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0" package="bsr.exa">
<uses-sdk android:minSdkVersion="8" />
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:label="@string/app_name" android:name="E23">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0" package="bsr.exa">
<uses-sdk android:minSdkVersion="8" />
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:label="@string/app_name" android:name="E23">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Step by Step Android Examples for Beginners
This Post “Step by step Android Examples for Beginners” is the result of many request I got through the web. Here, I would like to provide, the step by step example on Android which can be helpful to the one who have just started the journey of Mobile Application Development using Android as Beginners.
How to access Resource String in Android
MainActivity.java
package com.example.r_stringdemo;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String nm=getApplicationContext().getString(R.string.un);
if(nm.equals("bipin"))
{
Toast.makeText(getApplicationContext(), "True", Toast.LENGTH_LONG).show();
}
}
}
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String nm=getApplicationContext().getString(R.string.un);
if(nm.equals("bipin"))
{
Toast.makeText(getApplicationContext(), "True", Toast.LENGTH_LONG).show();
}
}
}
Android Versions List with Code Name and API
Version | Code Name | API Level |
Android 1.0 | alpha | 1 |
Android 1.1 | beta | 2 |
Android 1.5 | Cupcake | 3 |
Android 1.6 | Donut | 4 |
Android 2.0 | Eclair | 5 |
Android 2.0.1 | Eclair | 6 |
Android 2.1 | Eclair | 7 |
Android 2.2–2.2.3 | Froyo | 8 |
Android 2.3–2.3.2 | Gingerbread | 9 |
Android 2.3.3–2.3.7 | Gingerbread | 10 |
Android 3.0 | Honeycomb | 11 |
Android 3.1 | Honeycomb | 12 |
Android 3.2 | Honeycomb | 13 |
Android 4.0–4.0.2 | Ice Cream Sandwich | 14 |
Android 4.0.3–4.0.4 | Ice Cream Sandwich | 15 |
Android 4.1 | Jelly Bean | 16 |
Android 4.2 | Jelly Bean | 17 |
Android 4.3 | Jelly Bean | 18 |
Android 4.4 | KitKat | 19 |
Android 5.0 | Lollipop | 21 |
Android 5.1 | Lollipop | 23 |
Android 6.0 | Marshmallow | 22 |
Android 7.0 | Nougat | 24 |
Android 7.1 | Nougat | 25 |
Android 8.0 | Oreo | 26 |
Android 8.1 | Oreo | 27 |
Android 9.0 | Pie | 28 |
Android 10.0 | Android 10 | 29 |
Labels:
Android
|
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GTU WTAD Important Questions Bank
Unit-1 HTML and JavaScript
- Give DOM hierarchy? Explain properties, methods and events for text element of Html form
- What is JavaScript? Explain the advantages of JavaScript.
- What is CSS? Explain the types of CSS.
- Explain function in JavaScript?
- Explain Date and Time functions in JavaScript
- Explain Object creation and modification in Javascript
- Explain Following HTML Tag with example: (1)
- (i) Title, Head
- (ii) OL, UL , DL
- (iii) Table with TH,TR,TD
- Write a java script to check whether a number entered in textbox is prime or not.
- In Javascript, eval("2 + 0.56") returns ______. (1)
- In HTML, <ol> tag is used to create list items with bullets. (True / False) (1)
- Write the advantages of JavaScript. Explain any three methods of Date and String objects of JavaScript. (7)
- Explain the various types of inputs provided by HTML. (7)
- Write a Javascript that changes background color to red if user presses the mouse button. (4)
- Write a JavaScript function to add two numbers when user presses submit button. (3)
- JavaScript is created by______ . (Sun, Microsoft, Netscape) (1)
- What will be assign in variable mca by following JavaScript var mca = parseInt(“0xff”); Ans:255 (1 mark)
- JavaScript is compiled and executed at client. (True / False) (1)
- _________ is only property of string object in JavaScript. (1)
- Java is _______________and JavaScript is ___________________. (2)
- True or False. JavaScript Ignores White Space. (1)
- What is the code in HTML so that someone can mail by just clicking on text? (1)
- Write a code for create a multiple list in HTML. (1)
- Which two methods are used for takes keyboard input and screen output in Java Script? (1)
- What is the correct JavaScript syntax to write “Hello World”? (1)
- HTML elements with no content are called _______ elements (1)
- Explain Array in JavaScript with Example (3)
- Write a JavaScript to input two numbers and find out max. Put validation - both value is not null. (7)
- The <select> tag allows multiple choice selection from list of choices that are offered. (True/False) (1)
- The Date object contains information about a particular date and time. (True/False) (1)
- Explain DOM hierarchy. List two important methods of Window and Document Object. (7)
- What is special about Math object? Explain any two methods of String, Date and Array object.(7)
- Which tag is used to write JavaScript in HTML? (1)
- Explain functionality of Join() & Reverse() function of array in JavaScript. (2)
- Explain basic structure of HTML document. (3)
- Explain various dialog box provided by JavaScript. (3)
- Explain Table tag of HTML with example. (7)
- We can save external JavaScript file with ____ extension. (1)
JavaScript Exercises
1. Write a JavaScript that shows how a variable’s type can be changed on-the-fly.
2. Write
a JavaScript that demonstrates the use of +=,-=,*=,/= operators.
3. Create
a Form in HTML with two fields, minimum and maximum, write JavaScript to
validate that only numeric value is entered in both, and the value entered in
minimum is less than the value entered in maximum.
4. Write
a JavaScript that finds out multiples of 10 in 0 to 10000. On the click of
button start the timer and stop the counter after 10 seconds. Display on the
screen how many multiples of 10 are found out within stipulated time.
5. Write
a JavaScript to generate two random numbers and find out maximum and minimum
out of it.
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