Hi,
In order to find whether a given string starts with a particular string or not in JAVA, use the following code.
public class Main {
public static void main(String[] args) {
String urStr = "Coderz Heaven";
if (urStr.startsWith("Coderz")) {
System.out.println("Yes! Your string starts with Coderz");
}
else {
System.out.println("No!");
}
}
}
Hello all..
ScrollBars are our basic needs in a UI if we have to show a content that do not fit fully into our layout.
A normal scrollBar doesn’t look so beautiful, but don’t worry ANDROID is so customizable that you can customize your scrollBar also.
Here is a simple demo to make a custom beautiful scrollBar.
Let’s start
package pack.coderzheaven;
import android.app.Activity;
import android.os.Bundle;
public class FancyScrollBarDemo extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fancyscrollbar);
}
}
Now the layout for the scrollbar “fancyscrollbar.xml”.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbarTrackVertical="@drawable/scrollbar_vertical_track"
android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb"
android:scrollbarSize="12dip">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="CoderzHeaven Fancy ScrollBar Demo"/>
</LinearLayout>
</ScrollView>
Now create an xml inside the drawable folder and name it “scrollbar_vertical_thumb.xml” and copyt his code into it.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient android:startColor="#3333FF" android:endColor="#8080FF"
android:angle="0"/>
<corners android:radius="6dp" />
</shape>
Now create another xml inside the drawable folder and name it “scrollbar_vertical_track.xml” and copyt his code into it.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient android:startColor="#505050" android:endColor="#C0C0C0"
android:angle="0"/>
</shape>
You are done, Now go on and run it.
Enjoy.
Please leave your valuable comments.
Fancy ScrollBar Demo
Merging layout is an excellent feature in android. Separate xml can be included in a single xml.
For this first i create a main.xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:text="Account"
android:id="@+id/account"
android:layout_below="@+id/title"
android:padding="10dip"
android:layout_alignParentLeft="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</TextView>
<EditText
android:id="@+id/youtube_feed_TF"
android:hint="Username"
android:layout_marginLeft="10dip"
android:inputType="textEmailAddress"
android:layout_below="@+id/account"
android:layout_centerHorizontal="true"
android:layout_width="fill_parent"
android:padding="10dip"
android:layout_height="wrap_content"
></EditText>
<include layout="@layout/footer2button"/>
</RelativeLayout>
In the bottom you can see that i have included a xml file named footer2button.xml
<merge xmlns:android="http://schemas.android.com/apk/res/android"> <LinearLayout android:layout_width="fill_parent" android:gravity="bottom" android:id="@+id/bottomlayout" android:layout_height="wrap_content" android:layout_alignParentBottom="true"> <Button android:layout_height="wrap_content" android:id="@+id/backbutton" android:text="Back" android:layout_width="wrap_content" android:layout_weight="1" android:layout_alignParentBottom="true"> </Button> <Button android:layout_height="wrap_content" android:id="@+id/nextbutton" android:text="Next" android:layout_width="wrap_content" android:layout_weight="1" android:layout_alignParentBottom="true"> </Button> </LinearLayout> </merge>
The Merged layout will be like this
Hello everyone..
In today’s tutorial I will show you how to use camera in ANDROID in your program.
In this tutorial we will be having a button which will open the camera and after taking the photo it will show it in an imageView.
Note: This program will work only in the real device not in the emulator. So make sure to test it in the device itself. Also make sure to add the permission while using camera as shown below in your AndroidManifest file.
<uses-feature android:name="android.hardware.camera"></uses-feature>
Here is the main java file code
package com.coderzheaven;
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 OpenCameraDemo extends Activity {
private static final int CAMERA_PIC_REQUEST = 2500;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b = (Button)findViewById(R.id.Button01);
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST) {
Bitmap image = (Bitmap) data.getExtras().get("data");
ImageView imageview = (ImageView) findViewById(R.id.ImageView01);
imageview.setImageBitmap(image);
}
}
}
Now the main.xml file which contains the button and the imageview.
<?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"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<ImageView
android:id="@+id/ImageView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ImageView>
<Button
android:text="Open Camera"
android:id="@+id/Button01"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</Button>
</LinearLayout>
The strings.xml file
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, OpenCameraDemo!</string>
<string name="app_name">OpenCamera</string>
</resources>
And the AndroidManifest.xml file.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.coderzheaven"
android:versionCode="1"
android:versionName="1.0">
<uses-feature android:name="android.hardware.camera"></uses-feature>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".OpenCameraDemo"
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>
Please leave your valuable comments on this post.
Hi,
For creating a new file using JAVA, use the following code.
import java.io.File;
public class MainClass {
public static void main(String[] a)throws Exception {
File myFile = new File("c:\temp\newText.txt");
myFile.createNewFile();
}
}
Hi,
Given below is a code snippet which will demonstrate an exception handling in Java with Divide by zero error.
public class MainClass {
public static void main(String args[]) {
int urAns, urDiv;
try {
urDiv = 0;
urAns = 25 / urDiv;
System.out.println("Do you really think this will print out? No! It won't!");
}
catch (ArithmeticException e) {
System.out.println("Division by zero not Possible!");
}
System.out.println("This will print out after Exception Handling");
}
}
Hi,
Given below is a simple concatenation example in JAVA where two strings are joined together to form a single string.
public class MainClass {
public static void main(String[] arg) {
String yourString = "Coderz" + "Heaven";
System.out.println(yourString);
}
}
And…the output will be.. “CoderzHeaven”
Hi,
For searching for a particular substring from a starting index of a string and get the starting index of it in JAVA, use the following sample of code.
public class MainClass{
public static void main(String[] arg){
String myStr = "coderzco";
int begIndex= 2;
int myIndex= 0;
myIndex = str.indexOf("co", begIndex);
System.out.println(myIndex);
}
}
It will print out the starting index of the substring ‘co’ (the second ‘co’), that is 6.
Hi,
For searching for a particular character from a string and getting the index of that particular character, use the following code.
public class MainClass{
public static void main(String[] arg){
String myStr = "Coderz";
int strIndex = 0;
strIndex = myStr.indexOf('o');
System.out.println(strIndex);
}
}
It will print out the index of ‘o’, that’s 1.
Hi,
In order to get the UUID of an iPhone, iPod or iPad, do the following in your code.
NSString *myUUIDStr= [UIDevice currentDevice].uniqueIdentifier;
Here ‘myUUIDStr’ will contain the UUID of your specified iOS device.
Hi,
In order to make a UITextField a Password Field / Password Mode do the following.
In your .h class file,
IBOutlet UITextField *urPassword;
In your .m class file,
urPassword.secureTextEntry = YES;
This will make your UITextField in a Password entry mode or a Password Field.
Hi,
In order to set the font type of UITextView, do the following.
In your .h class file,
IBOutlet UITextView *urTextView;
In your .m class file,
[urTextViewsetFont:[UIFont fontWithName:@"Arial Rounded MT Bold" size:18]];
This will set ‘urTextView’ with font name ‘Arial Rounded MT Bold’ with font size 18.
Hi,
In order to make a UITextField with out or no border, do like this.
In your .h class file,
IBOutlet UITextField *urTextField;
In your .m class file,
urTextField.borderStyle = UITextBorderStyleNone;
Thus you will get a UITextField named urTextField without border.
Hi,
In order to sort the elements in a string array in C Sharp/C#, we use the sort() method. Given below is a simple example using sort() method to sort the elements in a string array.
using System;
class MainClass
{
public static void Main()
{
string[] urStringArray = {"xylo", "apple", "zeebra", "coderz", "heaven123", "heaven777"};
Array.Sort(urStringArray );
Console.WriteLine("Sorted string Array:");
for (int i = 0; i < urStringArray.Length; i++)
{
Console.WriteLine("urStringArray[" + i + "] = " + urStringArray[i]);
}
}
}
It will print out,
Sorted string Array:
urStringArray[0] = apple
urStringArray[1] = coderz
urStringArray[2] = heaven123
urStringArray[3] = heaven777
urStringArray[4] = xylo
urStringArray[5] = zeebra
Here is a simple example to show how to use seek Bar in android.
Create a new project and place this code in it.
package com.coderzheaven;
import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;
public class SeekBarDemo extends Activity implements SeekBar.OnSeekBarChangeListener {
SeekBar mSeekBar;
TextView mProgressText;
TextView mTrackingText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mSeekBar = (SeekBar)findViewById(R.id.seek);
mSeekBar.setOnSeekBarChangeListener(this);
mProgressText = (TextView)findViewById(R.id.progress);
mTrackingText = (TextView)findViewById(R.id.tracking);
}
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
mProgressText.setText(progress + " " +
getString(R.string.seekbar_from_touch) + "=" + fromTouch);
}
public void onStartTrackingTouch(SeekBar seekBar) {
mTrackingText.setText(getString(R.string.seekbar_tracking_on));
}
public void onStopTrackingTouch(SeekBar seekBar) {
mTrackingText.setText(getString(R.string.seekbar_tracking_off));
}
}
The main.xml file
<?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">
<SeekBar android:id="@+id/seek"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="100"
android:progress="50"
android:secondaryProgress="75" />
<TextView android:id="@+id/progress"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView android:id="@+id/tracking"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
The strings.xml file.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">SeekBarDemo</string>
<string name="seekbar_tracking_on">Tracking on</string>
<string name="seekbar_tracking_off">Tracking off</string>
<string name="seekbar_from_touch">from touch</string>
</resources>
SeekBar Demo in ANDROID
Here is another example to show How to get the current progress on your SeekBar in android?
Please leave your valuable cmments
Hello….
In today’s tutorial I will show you how to style your text in ANDROID.
This is a simple example to show how styling is done using XML in android.
This will also show you how to get a string from the resources in java code.
First create a new project and name it “StyleTextDemo” and copy this code into it.
package pack.coderzheaven;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TextView;
public class StyleTextDemo extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.onCreate(savedInstanceState);
setContentView(R.layout.resources);
TextView tv;
CharSequence cs;
String str;
// Using the getString() conevenience method, retrieve a string
// resource that happens to have style information. Note the use of
// CharSequence instead of String so we don't lose the style info.
cs = getText(R.string.styled_text);
tv = (TextView)findViewById(R.id.styled_text);
tv.setText(cs);
// Use the same resource, but convert it to a string, which causes it
// to lose the style information.
str = getString(R.string.styled_text);
tv = (TextView)findViewById(R.id.plain_text);
tv.setText(str);
Context context = this;
// Get the Resources object from our context
Resources res = context.getResources();
// Get the string resource, like above.
cs = res.getText(R.string.styled_text);
tv = (TextView)findViewById(R.id.res1);
tv.setText(cs);
}
}
Now in the “main.xml” file copy the following code. This is simply for the 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:id="@+id/coderz"
android:text="@string/coderz"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textStyle="normal"
android:padding="10dip"
/>
<TextView
android:id="@+id/styled_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textStyle="normal"
/>
<TextView
android:id="@+id/plain_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textStyle="normal"
/>
<TextView
android:id="@+id/res1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textStyle="normal"
/>
</LinearLayout>
Now the third step in the strings.xml file, place this code.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="coderz"><b><i>Style Text Demo from CoderzHeaven, Enjoy</i></b></string>
<string name="styled_text">Plain, <b>bold</b>, <i>italic</i>, <b><i>bold-italic</i></b></string>
</resources>
You are done, Now go on and run it.
Enjoy
Please leave your comments on this post and encourage us.
Style Text Demo in android
Hi,
As you know an exception is an error that occurs during the runtime.
Here is a simple exception handling example using C Sharp/C#.
using System;
class MainClass{
public static void Main(){
int value= 0;
try {
int i = 7/value;
}
catch (DivideByZeroException e) // catching divide by zero exception
{
Console.WriteLine("DivideByZero {0}", e);
}
catch (Exception e) // catching any other exceptions
{
Console.WriteLine("Exception {0}", e);
}
}
}
Hi,
This is how you can simply rename a namespace in C Sharp/C#,
using urNamedClass = System.Console;
class MainClass
{
public static void Main()
{
urNamedClass.WriteLine("Hello");
}
}
This will print out ‘Hello’!
The program contains a class complex with two member variables x and y and a string class with one member variable. Two objects are created for complex class and string class and accepted values through read () function and their values are added using the operator overloaded function and assigned to the third object for each class. Values of the added object are displayed using the display () function. The + operator is overloaded here.
#include<iostream.h>
#include<string.h>
#include<conio.h>
class number
{
private:
int num1,num2;
public:
void input()
{
cout<<"nntEnter the real part:";
cin>>num1;
cout<<"ntEnter the imaginary part:";
cin>>num2;
cout<<"n";
}
number operator + (number x) /*Operator overloading*/
{
number temp;
temp.num1 = num1 + x.num1;
temp.num2 = num2 + x.num2;
return(temp);
}
void display()
{
cout<<"nntSum of two numbers is: "<<num1<<" + i "<<num2;
}
};
Output
First Number
Enter the real part: 5
Enter the imaginary part: 4Second Number
Enter the real part: 1
Enter the imaginary part: 2Sum of 2 no is : 6 + i 6
Three file objects are created using the fstream class one for first, second for second file and third for the appended file. The first two files are opened in the input mode and third in the append mode. The first file is opened and checked for error condition if the file exist its contents are written to the third file else the program is aborted with a message on the screen. This process is repeated for the second file also .If the two files exist ,the first file contents are written first and second file contents are written to the third file by appending to its present contents.
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<process.h>
void main()
{
fstream file1, file2,file3;
char ch;
file1.open("file1.txt",ios :: out);
file2.open("file2.txt",ios :: out);
cout << "n Enter data in file 1 n";
cin.get(ch);
while(ch != 'n')
{
file1.put(ch);
cin.get(ch);
}
cout << "n Enter data in file 2 n";
cin.get(ch);
while(ch != 'n')
{
file2.put(ch);
cin.get(ch);
}
file1.close(); file2.close();
file1.open("file1.txt",ios :: in);
file2.open("file2.txt",ios :: in);
file3.open("file3.txt",ios :: out | ios :: trunc | ios :: app);
if(!file1)
{
cout << "n First file not found ";
getch();
exit(0);
}
while(file1)
{
file1.get(ch);
file3.put(ch);
}
if(!file2)
{
cout << "n Second file not found ";
getch();
exit(0);
}
while(file2)
{
file2.get(ch);
file3.put(ch);
}
file1.close();
file2.close();
file3.close();
cout << "nt Appended file contents n";
file3.open("file3.txt",ios :: in);
while(file3)
{
file3.get(ch);
cout.put(ch);
}
getch();
}
Output :
Enter data in file 1
I am coder
Enter data in file 2
I am an student.
Appended file contents
I am coder. I am an student.
Two file objects are created using the fstream class for the two files, one for source file and another destination file. The first file is opened and its contents are copied to the second file using get ( ) and put ( ) function. Each time the source file is opened error checking is done to ensure that the file is existing else the program is aborted with a message.
If the contents are successfully copied, the destination file contents are displayed on the screen.
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<string.h>
#include<process.h>
void main()
{
fstream file1, file2;
char ch;
clrscr();
file1.open("file1.txt",ios :: out);
cout << "nt Press 'enter key' to quit nn";
cout << "n Enter the data n";
cin.get(ch);
while(ch != 'n')
{
file1.put(ch);
cin.get(ch);
}
file1.close();
file1.open("file1.txt",ios :: in);
if(!file1)
{
cout<< "n File1 not found !! n";
getch();
exit(0); // aborting…
}
cout << "n First file contents n";
while(file1)
{
file1.get(ch);
cout.put(ch);
}
file1.seekg(0); /* copying process..... */
file2.open("file2.txt",ios :: out );
cout << "nn First file contents copied to second file... n";
while(file1)
{
file1.get(ch);
file2.put(ch);
}
file1.seekg(0);
file2.close();
file2.open("file1.txt",ios :: in);
if(!file1)
{
cout<< "n File1 not found !! n";
getch();
exit(0); // aborting…
}
cout << "n Second file contents n";
while(file2)
{
file2.get(ch);
cout.put(ch);
}
file2.close();
getch();
}
The output is like this
Press ‘enter key’ to quit
Enter the data
I am an Indian
First file contents
I am an Indian
First file contents copied to second file…
Second file contents
I am an Indian
Hi,
For making non colliding bodies in Box2D, you may need to give SAME, NEGATIVE, group index to the b2FixtureDef of bodies you created. See the following code.
fixtureDefA.filter.groupIndex = -7; fixtureDefB.filter.groupIndex = -7;
The bodies with the above two fixture definitions won’t collide.
Hi,
For Pausing all schedulers and actions in Cocos2D, use this line.
[self pauseSchedulerAndActions];
For resuming the paused schedulers and actions, use this.
[self resumeSchedulerAndActions];
Hi,
For opening a Web Link/URL from an iPhone application, follow the two simple steps.
Step 1 :
Create an NSURL object and initialize it with your URL string
NSURL *myURL = [NSURL URLWithString:@"http://www.coderzheaven.com/"];
;
Step 2 :
Use the openURL method by passing your NSURL object
[[UIApplication sharedApplication] openURL: myURL];
Done.
Hi,
Some times while game building via Box2D Physics Engine, you may need to find out whether your bodies (from b2Body) are moving or not. Use the following sample of code to find out whether the given b2Body is moving or not.
b2Body *urBody;
if(urBody->IsAwake()
{
//urBbody is moving! It's not in rest!
}
else
{
//urBody is at rest!
}
