Monday, May 20, 2013

Splash Screen Android

Create Splash Screen In Android

Creating splash is a three step simple procedure

Create XML splash.xml and copy this code

<?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"

android:background="#FFFFFF"

android:layout_gravity="center">

<ImageView

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:src="@drawable/splash"

android:scaleType="centerInside"

android:gravity="center"/>

</LinearLayout>

2. Create JAVA file splash.java and copy this code

import android.app.Activity;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.os.Handler;

import android.preference.PreferenceManager;

import android.view.Window;

public class SplashActivity extends Activity {

private final int SPLASH_DISPLAY_LENGTH = 3000;

protected void onCreate(Bundle savedInstanceState)

{

this.requestWindowFeature(Window.FEATURE_NO_TITLE);

super.onCreate(savedInstanceState);

setContentView(R.layout.splash);

}

@Override

protected void onResume()

{

super.onResume();

SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);

// Obtain the sharedPreference, default to true if not available

boolean isSplashEnabled = sp.getBoolean("isSplashEnabled", true);

if (isSplashEnabled)

{

new Handler().postDelayed(new Runnable()

{

@Override

public void run()

{

//Finish the splash activity so it can't be returned to.

SplashActivity.this.finish();

// Create an Intent that will start the main activity.

Intent mainIntent = new Intent(splash.this, MainActivity.class);

SplashActivity.this.startActivity(mainIntent);

}

}, SPLASH_DISPLAY_LENGTH);

}

else

{

// if the splash is not enabled, then finish the activity immediately and go to main.

finish();

Intent mainIntent = new Intent(splash.this, MainActivity.class);

SplashActivity.this.startActivity(mainIntent);

}

3. Now third and final step open AndroidManifest.xml file and copy this code under application tag

<activity

android:name=".splash"

android:label="@string/app_name"

android:windowSoftInputMode="adjustResize">

<intent-filter>

</intent-filter>

</activity>

And your work is done, splash is ready to explode....

Please leave comment if any problem occurs...............................

Tuesday, April 23, 2013

Download a File In Android From Remote Server

In Your class file put add this code

package com.facebook.samples.sessionlogin;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.net.URL;

import java.net.URLConnection;

import android.app.Activity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class HTTPTest extends Activity {

String dwnload_file_path = "https://fbcdn-profile-a.akamaihd.net/hprofile-ak-snc6/187259_10000060421658402_744490318028_q.jpg";

String dest_file_path = "/sdcard/dwnloaded_file.png";

Button b1;

ProgressDialog dialog = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

b1 = (Button)findViewById(R.id.Button01);

b1.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

dialog = ProgressDialog.show(HTTPTest.this, "", "Downloading file...", true);

new Thread(new Runnable() {

public void run() {

downloadFile(dwnload_file_path, dest_file_path);

}

}).start();

}

});

}

public void downloadFile(String url, String dest_file_path) {

try {

File dest_file = new File(dest_file_path);

URL u = new URL(url);

URLConnection conn = u.openConnection();

int contentLength = conn.getContentLength();

DataInputStream stream = new DataInputStream(u.openStream());

byte[] buffer = new byte[contentLength];

stream.readFully(buffer);

stream.close();

DataOutputStream fos = new DataOutputStream(new FileOutputStream(dest_file));

fos.write(buffer);

fos.flush();

fos.close();

hideProgressIndicator();

} catch(FileNotFoundException e) {

hideProgressIndicator();

return;

} catch (IOException e) {

hideProgressIndicator();

return;

}

void hideProgressIndicator(){

runOnUiThread(new Runnable() {

public void run() {

dialog.dismiss();

}

});

}

In your manifestation file add permission for

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.READ_PHONE_STATE"/>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

In your xml file add

<?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="File Download Demo from Coderzheaven \n\nFile to download : http://coderzheaven.com/sample_folder/sample_file.png \n\nSaved Path : sdcard/\n"

<Button

android:text="Download File"

android:id="@+id/Button01"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

</Button>

</LinearLayout>

And you are good to go.........

Thursday, April 18, 2013

PHP: LOOP THROUGH EACH STRING LINE IN A TEXTAREA

To loop through all the string inputs entered on a new line for a textarea control is not particularly challenging and uses basic array functionality to achieve this.

To see the code in action:

//trim off excess whitespace off the whole
$text = trim($_POST['textareaname']);

//explode all separate lines into an array
$textAr = explode("\n", $text);

//trim all lines contained in the array.
$textAr = array_filter($textAr, 'trim');

//loop through the lines
foreach($textAr as $line){
echo "$line";
}

Uploading files to HTTP server using POST. Android SDK.

On Android Class just paste the code

HttpURLConnection connection = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;

String pathToOurFile = "/data/file_to_send.mp3";
String urlServer = "http://192.168.1.1/handle_upload.php";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary =  "*****";

int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;

try
{
FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile) );

URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();

// Allow Inputs & Outputs
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);

// Enable POST method
connection.setRequestMethod("POST");

connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

outputStream = new DataOutputStream( connection.getOutputStream() );
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + pathToOurFile +"\"" + lineEnd);
outputStream.writeBytes(lineEnd);

bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];

// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);

while (bytesRead > 0)
{
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}

outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

// Responses from the server (code and message)
serverResponseCode = connection.getResponseCode();
serverResponseMessage = connection.getResponseMessage();

fileInputStream.close();
outputStream.flush();
outputStream.close();
}
catch (Exception ex)
{
//Exception handling
}

Now on php(Server side) page paste the code

<?php
$target_path  = "./";
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
 echo "The file ".  basename( $_FILES['uploadedfile']['name']).
 " has been uploaded";
} else{
 echo "There was an error uploading the file, please try again!";
}
?>

Friday, April 12, 2013

Generate Hash Key For Facebook

In order to generate key hash you need to follow some easy steps.

1) Download Openssl from: http://code.google.com/p/openssl-for-windows/downloads/list

2) Make a openssl folder in C drive

3) Extract Zip files into openssl folder

4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JDK bin Folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin)

5) Open command prompt and give the path of JDK Bin folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin).

6) Copy the code and hit enter keytool -exportcert -alias androiddebugkey -keystore debug.keystore > c:\openssl\bin\debug.txt

7) Now you need to enter password, Password = android.

8) See in openssl Bin folder you will get a file with the name of debug.txt

9) Now either you can restart command prompt or work with existing command prompt

10) comes to C drive and give the path of openssl Bin folder

11) copy the following code and paste openssl sha1 -binary debug.txt > debug_sha.txt

12) you will get debug_sha.txt in openssl bin folder

13) Again copy following code and paste openssl base64 -in debug_sha.txt > debug_base64.txt

14) you will get debug_base64.txt in openssl bin folder

15) open debug_base64.txt file Here is your Key hash.

Hope This Help....................

Tuesday, March 5, 2013

Wamp Server common error "Could not execute menu item (internal error)

Wamp Server common error "Could not execute menu item (internal error)[Exception] Could not perform service action: The service has not been started".

Solution !:

Please make sure none of the following services is running on your system.

IIS
Skype
NOD32
Eset
Internet optimizer
Google Accelerator
any database server
any web server

If you are using any one of them , close it or uninstall it then select "restart all services" from WAMP menu.

Solution 2:

Under Apache open the " httpd.conf " and change the lines

#Listen 12.34.56.78:80

Listen 80

#Listen 12.34.56.78:80

Listen 8080

Save the file and restart the server and you are good to go

check by typing 127.0.0.1 or localhost in your browser.

Monday, February 25, 2013