most dangerous competitors in tech

1:20 PM C4KTeam No comments

Bloomberg ranked technology companies by the number of times they were cited as competitors in the latest Form 10-K filing of different firms.

Here are the 18 most dangerous tech rivals.

Yahoo

Rank: 18

Number of top 50 firms mentioning it as competitor: 6

Location: California, US

Yahoo is an internet service company that offers various services such as including email, search, news, finance, and photo hosting.

Texas Instruments

Rank: 17

Number of top 50 firms mentioning it as competitor: 6

Location: Texas, US

TI is a global semiconductor design & manufacturing company. It is the third largest manufacturer of semiconductors in the world.

STMicroelectronics

Rank: 16

Number of top 50 firms mentioning it as competitor: 6

Location: Geneva, Switzerland

Europe’s largest semiconductor company, STMicroelectronics is headquartered in Geneva (Switzerland). According to Wikipedia, the company is world leader in segments such as inkjet printheads, smartcard chips, and computer peripherals.

Facebook

Rank: 15

Number of top 50 firms mentioning it as competitor: 6

Location: California, US

Facebook is the biggest social networking website that helps user connect with friends, family and acquaintances.

Broadcom

Rank: 14

Number of top 50 firms mentioning it as competitor: 6

Location: California, US

Broadcom Corporation is a semiconductor company that provided chipset for Apple iPhone, iPod, Nintendo, and many of Samsung’s phones such as Galaxy S4 and S5.

Toshiba

Rank: 12

Number of top 50 firms mentioning it as competitor: 7

Location: Tokyo, Japan.

Among many engineering and electronics products Toshiba sells; it is the fifth largest computer vendor and also among the top five semiconductor companies in the world.

Accenture

Rank: 12

Number of top 50 firms mentioning it as competitor: 7

Location: Dublin, Ireland

Accenture is a global management consulting, technology services and outsourcing company, with more than 293,000 people serving clients in more than 120 countries.

Cisco Systems

Rank: 10

Number of top 50 firms mentioning it as competitor: 8

Location: California, US

Cisco is the worldwide leader in networking that designs, manufactures and sells equipments.

Amazon.com

Rank: 10

Number of top 50 firms mentioning it as competitor: 8

Location: Washington, United States

Amazon is the world’s largest online retailer. It is also the world’s largest internet company on revenue and number of employees.

Intel

Rank: 8

Number of top 50 firms mentioning it as competitor: 9

Location: California, US

Intel is the inventor of the chipset (x86) that’s found inside most of the computers in world. It is also the world’s largest and highest valued semiconductor company.

Dell

Rank: 8

Number of top 50 firms mentioning it as competitor: 9

Location: Texas, US

Dell is the biggest computer manufacturer in the world.

Samsung Electronics

Rank: 7

Number of top 50 firms mentioning it as competitor: 11

Location: Suwon, South Korea.

The flagship company of the Samsung Group, Samsung Electronics is one of the biggest information technology company in the world. According to Wikipedia, it has sales networks in 80 countries and employs around 370,000 people.

Google

Rank: 5

Number of top 50 firms mentioning it as competitor: 12

Location: California, U.S.

The internet giant, which started as search engine, now offers numerous internet-related services including cloud computing, softwares, and online advertising technologies. It also develops Android operating system for smartphones.

Apple

Rank: 5

Number of top 50 firms mentioning it as competitor: 12

Location: California, US

Apple designs and creates iPod and iTunes, Mac laptop and desktop computers.

Oracle

Rank: 4

Number of top 50 firms mentioning it as competitor: 13

Location: California, United States

The company specialises in developing and marketing computer hardware systems and enterprise software products – particularly its own brands of database management systems, according to Wikipedia.

Hewlett-Packard

Rank: 3

Number of top 50 firms mentioning it as competitor: 15

Location: California, US

HP is one of the biggest manufacturers of computers and printers in the world.

Microsoft

Rank: 2

Number of top 50 firms mentioning it as competitor: 16

Location: Washington, US

The company develops, manufactures, licenses, supports and sells computer software, consumer electronics and personal computers.

IBM

Rank: 1

Number of top 50 firms mentioning it as competitor: 18

Location: New York, U.S.

Webinar: Analyzing the ROI of JavaScript in Enterprise Software Development

1:08 PM C4KTeam No comments

Join our upcoming webinar!
Over the last five years, there has been an explosion of innovation in both web and native technologies. With the rapid release of libraries, frameworks and tools, developers have many options to create applications for this new world. But have design patterns and the general utility of micro-framework stacks really added productive value to full-scale enterprise web development?

Join Arthur Kay, Developer Relations Manager at Sencha, and Abe Elias, CTO of Sencha, as they examine today’s enterprise software development challenges and discuss the ROI and economic impact of JavaScript libraries on development teams.
What you'll learn:

How to build successful teams and effectively manage the software development lifecycle
Why the use of 3rd party JavaScript libraries comes with hidden costs
How the Sencha platform leverages HTML5 to drive customer success in the enterprise

Register today for this webinar on:
Tuesday, October 14, 2014 at 10:00am San Francisco PDT
Tuesday, October 14, 2014 at 1:00pm New York EDT
Tuesday, October 14, 2014 at 6:00pm London GMT

How to create RelativeLayout programmatically in android

2:59 PM C4KTeam No comments

Android RelativeLayout enables you to specify how child views are positioned relative to each other. The position of each view can be specified as relative to sibling elements or relative to the parent.

RelativeLayout is a view group that displays child views in relative positions. The position of each view can be specified as relative to sibling elements (such as to the left-of or below another view) or in positions relative to the parent RelativeLayout area (such as aligned to the bottom, left of center).

you have to add the view using LayoutParams.

LinearLayout linearLayout = new LinearLayout(this);

RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
relativeParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);

parentView.addView(linearLayout, relativeParams);

All credit to sechastain, to relatively position your items programmatically you have to assign ids to them.

TextView tv1 = new TextView(this);
tv1.setId(1);
TextView tv2 = new TextView(this);
tv2.setId(2);
Then addRule(RelativeLayout.RIGHT_OF, tv1.getId());

and you have to add this way too

With relative layout you position elements inside the layout.

create a new RelativeLayout.LayoutParams

RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(...)

(whatever... fill parent or wrap content, absolute numbers if you must, or reference to an XML resource)

Add rules: Rules refer to the parent or to other "brothers" in the hierarchy.

lp.addRule(RelativeLayout.BELOW, someOtherView.getId())
lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT)
Just apply the layout params: The most 'healthy' way to do that is:

parentLayout.addView(myView, lp)

More:

http://developer.android.com/guide/topics/ui/layout/relative.html

http://developer.android.com/reference/android/widget/RelativeLayout.html

http://developer.android.com/reference/android/widget/RelativeLayout.LayoutParams.html

http://www.tutorialspoint.com/android/android_relative_layout.htm

Happy Coding !!!

What is the difference between gravity and layout_gravity in android?

2:47 PM C4KTeam No comments

android:gravity sets the gravity of the content of the View its used on.
android:layout_gravity sets the gravity of the View or Layout in its parent.
And an example is here

Here is the defination of gravity Standard constants and tools for placing an object within a potentially larger container. in developer.android.com and more http://developer.android.com/reference/android/widget/LinearLayout.LayoutParams.html

android:layout_gravity is the Outside gravity of the View. That means, to specify the direction in which the View should touch it's parent's border.

android:gravity is the Inside gravity of that View. This means, in which direction it's contents should align.

HTML/CSS Equivalents:

android:layout_gravity = float in CSS
android:gravity = text-align in CSS

Easy trick to remember: Take "layout-gravity" as "Lay-outside-gravity"

below examples show difference between layout:gravity and gravity,may be help you. http://sandipchitale.blogspot.com/2010/05/linearlayout-gravity-and-layoutgravity.html

Happy Coding !!!

What is android:layout_weight in Android?

2:39 PM C4KTeam No comments

What happens when i set weight =1 for one layout and weight to 2 for other layout.If i have linear layout, here is the simple solutions:

The weight is used to distribute the remaining empty space or take away space when the total sum is larger than the LinearLayout.

Indicates how much of the extra space in the LinearLayout will be allocated to the view associated with these LayoutParams. Specify 0 if the view should not be stretched. Otherwise the extra pixels will be pro-rated among all views whose weight is greater than 0.
Look more about this information click. Here, and Link1

Layout weight problem

If we are dividing the parent in to equal parts, we just set the children’s layout_weights all to 1. But if we want to divide it unequally, we can do that in a number of ways. We can either use decimal fractional values which total 1, or we can use integer values:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="fill_parent"
  android:layout_height="fill_parent">
   <LinearLayout android:background="#FF0000"
    android:layout_height="fill_parent" android:layout_width="fill_parent"
    android:layout_weight="0.66667" />
  <LinearLayout android:background="#00FF00"
    android:layout_height="fill_parent" android:layout_width="fill_parent"
    android:layout_weight="0.33333" />
</LinearLayout>

Or

 <?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">
   <LinearLayout android:background="#FF0000"
      android:layout_height="fill_parent" android:layout_width="fill_parent"
      android:layout_weight="2" />
    <LinearLayout android:background="#00FF00"
       android:layout_height="fill_parent" android:layout_width="fill_parent"
       android:layout_weight="1" />
  </LinearLayout>

Both of these will produce the same result.

Happy Coding!!!

How to get programmatically package Name in Android

2:27 AM C4KTeam No comments

In many cases you have to need package name programmatically so, here is the
some method name for getting package name.

You will have to initialize it in the main activity's onCreate() method:

Global to the class:

public class MainActivity extends Activity {
public static String PACKAGE_NAME;
private TextView tvPackageName;
private Button btnNext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PACKAGE_NAME = getApplicationContext().getPackageName();
tvPackageName=(TextView)findViewById(R.id.tv_pn);
btnNext=(Button)findViewById(R.id.btn_next);
tvPackageName.setText("Package Name "+"\""+PACKAGE_NAME+"\"");
btnNext.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent inext= new Intent(getApplicationContext(), GetPackageName.class);
startActivity(inext);

}
});
}

}

In Next Class you can access this package Name, Like this:
public class GetPackageName extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

Toast.makeText(getApplicationContext(), MainActivity.PACKAGE_NAME, Toast.LENGTH_SHORT).show();
}

}

You can then access it via MainActivity.PACKAGE_NAME.

Output snapshots:

How to creating dynamically or programmatically radio buttons in Android

12:07 AM C4KTeam No comments

Are you trying to create programmatically radio buttons on android, here is the tutorials may be helpful for you .

Here is the full code:

public class MainActivity extends Activity {
private Button btnWrite;
private LinearLayout ll;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
btnWrite= new Button(getApplicationContext());
btnWrite.setText("ADD Radio Button");
ll= new LinearLayout(getApplicationContext());
btnWrite.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
createDynamicButton();
}
});

ll.addView(btnWrite);
setContentView(ll);
}
protected void createDynamicButton() {

final RadioButton[] rb = new RadioButton[5];
final RadioGroup rg = new RadioGroup(this); //create the RadioGroup
rg.setOrientation(RadioGroup.VERTICAL);//or RadioGroup.VERTICAL
for(int i=0; i<5; i++){
rb[i] = new RadioButton(this);
rg.addView(rb[i]); //the RadioButtons are added to the radioGroup instead of the layout
rb[i].setText("Radio " + i);
}
ll.addView(rg);//you add the whole RadioGroup to the layout
btnWrite.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
for(int i = 0; i < 5; i++) {
rg.removeView(rb[i]);//now the RadioButtons are in the RadioGroup
}
}
});

}

}

Output snapshots of above code:

Happy Codding !!!

How to install or upgrade iOS 8

11:59 PM C4KTeam No comments

Here is the Cnet.com described on own article, How to easy to install or update ios 8 in you iphone, ipad.

Method 1: Over-the-air update

If you are on a Wi-Fi network, you can upgrade to iOS 8 right from your device itself. No need for a computer or iTunes. Go to Settings > General > Software Update and click the Download and Install button for iOS 8.

Screenshot by Matt Elliott/CNET

After tapping the Download and Install button, you'll need to tap to agree to Apple's terms and conditions and then wait as your phone slowly downloads the file.
Once you have successfully downloaded the file, which was 1.1GB for my 32GB iPhone 5S (though my iPhone told me I needed to have a whopping 5.8GB of free space in order to proceed), you'll be greeted by an Install Now button. After the update installs and your device restarts, you can slide to set up iOS 8. You'll need to click through the following setup screens:

Screenshot by Matt Elliott/CNET

Screenshot by Matt Elliott/CNET

Screenshot by Matt Elliott/CNET

Screenshot by Matt Elliott/CNET

Method 2: Via iTunes

If you are near your computer with iTunes, it might be faster to update this way. In my experience, updating my iPad Air via iTunes was faster than updating my iPhone 5S over the air. The first order of business is to update iTunes to version 11.4. Open iTunes and then click iTunes > Check for Updates to install the latest version.
Once iTunes is up-to-date, connect your iOS device. Click on your device in the upper-right corner of iTunes and then click the Update button.

Screenshot by Matt Elliott/CNET

A pop-up window will appear, alerting you that a new iOS version is available for your device. Click the Download and Update button. (Or, if you are going to need your phone in the near future, opt for the Download Only button to download it now and install later. iOS 8 is a 1.1GB download and took the better part of an hour to download and install via iTunes.)

How to write text file in SDCARD in Android

3:01 AM C4KTeam No comments

Here is the full Source code for write file:

public class MainActivity extends Activity {
private String stringFile;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
stringFile="This is the test string file";
writeFile(stringFile);

}

private void writeFile(String stringFile2) {
try {
File myFile = new File("/sdcard/testWriteFile.txt");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter =
new OutputStreamWriter(fOut);
myOutWriter.append(stringFile2);
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),
"Done writing SD 'mysdfile.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}

}

}

Finally you don't forget to declared permission in your androidmanifest.xml file.
----------------

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

Output looks like this:

Convert UTF-8 encoded NSData to NSString in ios

8:50 PM C4KTeam No comments

UTF-8 encoded NSData from windows server and I want to convert it to NSString for iPhone. Since data contains characters (like a degree symbol) which have different values on both platforms, convert data to string following way.

If the data is not null-terminated, you should use -initWithData:encoding:

NSString* newStr = [[NSString alloc] initWithData:theData encoding:NSUTF8StringEncoding];

If the data is null-terminated, you should instead use -stringWithUTF8String: to avoid the extra \0 at the end.

NSString* newStr = [NSString stringWithUTF8String:[theData bytes]];

if you are doing this, remember this: using "stringWithUTF8String:" on a string that is not null-terminated, the result is unpredictable.

or simple call this for this

+(id)stringWithUTF8String:(const char *)bytes.

Happy Coding !!!

Android Developer @ TripCraft in USA

11:50 AM C4KTeam No comments

Looking for an experienced Android developer to build native mobile apps for business and consumer needs within the travel and hospitality industry. This role will primarily focus on Android, but having iOS experience is a big plus.
The mobile solutions we develop (native & browser) are powered by cloud servers that handle content, marketing, customer, and other business needs. Our cloud platform is built with Linux, PostgreSQL, Ruby on Rails, HTML5, and uses XML / JSON for data exchange. It is hosted on Amazon, Engine yard, and/or Heroku.
Candidates MUST be located in the USA and be able to work during typical EST hours. Candidates located in the New England area that are willing to come to Waltham for occasional meetings and in-office development will be given a priority.

Skills & Requirements

Skills:

Experienced Android / Java developer that can write code while keeping an eye on performance and architecture.
Experience with consuming RESTful web services using JSON.
Experience with In-app database and advanced UX a big plus.
Experience with Voice Recognition (Siri, Nuance, etc.) a big plus.
Familiarity with database design a plus.
Familiarity with creating and maintaining automated unit tests.
Familiarity with Git (or similar).

Approach:

Top-down thinker and developer to ensure what we produce is extensible, reusable, and scalable
Great communicator and team player as you bridge the gap between wireframes, designs, challenging requirements, and a growing code base
Team player that doesn't mind leading and following as needed.
Deliverable-oriented. Be able to break down larger business requirements into smaller technical tasks, which you can achieve and iterate on in a short amount of time, in order to continually demonstrate forward progress to us and our clients.

About TripCraft

TripCraft offers mobile solutions for the travel industry.
TripCraft is the travel industry’s first mCommerce platform that provides mobile solutions for clients like Mandarin Oriental Hotels, Caesars Entertainment, Amadeus International, and sbe Entertainment. TripCraft is located in Waltham, Ma.
We don’t pick sides when it comes to mobile development and are as comfortable with native apps and mobile websites as we are with iOS, Android and Windows operating systems.
We have the heart and soul of a start-up, but the wisdom and experience of travel industry veterans. Our culture is fun, casual, and flexible. Like working from home? So do we! At TripCraft, we place emphasis on creativity and productivity, not office cubicles. We are a collection of self-starters, team players, and stellar communicators.
Permanent candidates preferred, but will consider contractor-to-perm in situations. Interested applicants can send the resume to Mike.Murray@TripCraft.com. For more information about TripCraft, visit our website at http://www.tripcraft.com.

Apply Now

Happy Job !!!

Action Bar Demo in Android

11:10 AM C4KTeam No comments

The action bar is a window feature that identifies the user location, and provides user actions and navigation modes. Using the action bar offers your users a familiar interface across applications that the system gracefully adapts for different screen configurations.
Lessons

Setting Up the Action Bar: Learn how to add a basic action bar to your activity, whether your app supports only Android 3.0 and higher or also supports versions as low as Android 2.1 (by using the Android Support Library).
Adding Action Buttons: Learn how to add and respond to user actions in the action bar.
Styling the Action Bar: Learn how to customize the appearance of your action bar.
Overlaying the Action Bar: Learn how to overlay the action bar in front of your layout, allowing for seamless transitions when hiding the action bar.

Here is the example of Action Bar demo App

first define menu in res/menu/main.xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
android:id="@+id/refresh"
android:alphabeticShortcut="r"
android:icon="@drawable/ic_action_refresh"
android:orderInCategory="100"
android:showAsAction="always"/>
<item
android:id="@+id/share"
android:actionProviderClass="android.widget.ShareActionProvider"
android:icon="@drawable/ic_action_share"
android:orderInCategory="1"
android:showAsAction="collapseActionView"
android:title="Share"/>
<item
android:id="@+id/update"
android:icon="@drawable/db_update_24"
android:orderInCategory="100"
android:showAsAction="collapseActionView"
android:title="Update"/>

</menu>

Now define for refresh icons with circling with progress in to: res/layout/actionbar_indeterminate_progress.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="56dp"
android:minWidth="56dp">
<ProgressBar android:layout_width="32dp"
android:layout_height="32dp"
android:layout_gravity="center"/>
</FrameLayout>

another xml file defined in layout: res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/relativeLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00FFFF" >

</RelativeLayout>

Now finally add your project MainActivity java file with full code:

package com.example.searchdemo;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import android.annotation.TargetApi;
import android.os.Build;
import android.view.ViewConfiguration;
import android.widget.ShareActionProvider;

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public class MainActivity extends Activity {
private int toast_time = 100;
private Menu optionsMenu;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getOverflowMenu();
}

// check strictmode and ignore it
private void strictMode() {
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
}

// inflate for action bar
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
this.optionsMenu = menu;
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

// handle click events for action bar items
@SuppressLint("NewApi")
@Override
public boolean onOptionsItemSelected(MenuItem item) {

switch (item.getItemId()) {

case R.id.refresh:
// showToast(getResources().getString(R.string.refresh));
setRefreshActionButtonState(true);
Intent intent = getIntent();
finish();
startActivity(intent);
// setRefreshActionButtonState(false);
return true;

case R.id.share:
// showToast("Share was clicked.");
String shareBody="Sharing Message";
ShareActionProvider myShareActionProvider = (ShareActionProvider) item
.getActionProvider();

Intent myIntent = new Intent();
myIntent.setAction(Intent.ACTION_SEND);
myIntent.putExtra(Intent.EXTRA_TEXT, shareBody);
myIntent.setType("text/plain");

myShareActionProvider.setShareIntent(myIntent);

return true;
case R.id.update:
showToast("Update");
return true;
default:
return super.onOptionsItemSelected(item);
}
}

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@SuppressLint("NewApi")
public void setRefreshActionButtonState(final boolean refreshing) {
if (optionsMenu != null) {
final MenuItem refreshItem = optionsMenu.findItem(R.id.refresh);
if (refreshItem != null) {
if (refreshing) {
refreshItem
.setActionView(R.layout.actionbar_indeterminate_progress);
} else {
refreshItem.setActionView(null);
}
}
}
}

// put the other two menu on the three dots (overflow)
private void getOverflowMenu() {

try {

ViewConfiguration config = ViewConfiguration.get(this);
java.lang.reflect.Field menuKeyField = ViewConfiguration.class
.getDeclaredField("sHasPermanentMenuKey");
if (menuKeyField != null) {
menuKeyField.setAccessible(true);
menuKeyField.setBoolean(config, false);
}
} catch (Exception e) {
e.printStackTrace();
}

}

// so that we know something was triggered
public void showToast(String msg) {
Toast.makeText(this, msg, toast_time).show();
}

}

here is the output of above demo app snapshots:

Hope, this demo helpful for developing apps.

Do you want more about action bar go following links:
http://developer.android.com/guide/topics/ui/actionbar.html

https://developer.android.com/training/basics/actionbar/index.html

https://www.youtube.com/watch?v=4BOE9TeUY1w

http://developer.android.com/design/patterns/actionbar.html

http://www.androidhive.info/2013/11/android-working-with-action-bar/

http://jgilfelt.github.io

Happy Coding !!!

Calculate Square pair in array in Java

10:19 AM C4KTeam No comments

Count Square Pairs in Java based on arrays. From the array here is the name function countSquarePairs using for calculate square pairs.

Lets first define array:

int [] sparray= new int[] {9, 0, 2, -5, 7};

then calculated square pairs from this function:

private static int countSquarePairs(int[] sparray) {
int count=0;
// TODO Auto-generated method stub
if (sparray.length<=1) {
return 0;
}
else {
//Arrays.sort(sparray);

int i, j, temp; //be sure that the temp variable is the same "type" as the array
for ( i = 0; i < sparray.length - 1; i ++ )
{
for ( j = i + 1; j < sparray.length; j ++ )
{
if( sparray[ i ] > sparray[ j ] ) //sorting into descending order
{
temp = sparray[ i ]; //swapping
sparray[ i ] = sparray[ j ];
sparray[ j ] = temp;
}
}
}

System.out.println("---"+Arrays.toString(sparray));
for (int y = 0; y < sparray.length-1; y++) {
for (int z = y+1; z < sparray.length; z++) {
int tem=sparray[y]+sparray[z];
int square=(int)Math.sqrt(tem);
if (tem==square*square) {
count+=1;
}
}
}
}
return count;
}
Here is the final print how many square pair values in existing arrays:

System.out.println("No of countSquarePairs=="+countSquarePairs(sparray));

Output of above arrays:

No of countSquarePairs==4

Happy Coding!!!

How do you get a timestamp in programming language?

4:12 AM C4KTeam No comments

Get time timestamp in Java:
first import the file
import java.sql.Timestamp;
import java.util.Date;

and, then just defined following code

java.util.Date date= new java.util.Date();
System.out.println(new Timestamp(date.getTime()));

Get timestamp in Java script:

the following returns the number of milliseconds since the epoch.

new Date().getTime();

Or on browsers that support ES5 (notably not IE8 and earlier), you can use Date.now:

Date.now();

which is really easily shimmed for older browsers:

if (!Date.now) {
Date.now = function() { return new Date().getTime(); };
}

Get timestamp in IOS:

NSString * timestamp = [NSString stringWithFormat:@"%f",[[NSDate date] timeIntervalSince1970] * 1000];

(times 1000 for milliseconds, otherwise, take that out)

If You're using it all the time, it might be nice to declare a macro

#define TimeStamp [NSString stringWithFormat:@"%f",[[NSDate date] timeIntervalSince1970] * 1000]

Then Call it like this:

NSString * timestamp = TimeStamp;

Or as a method:

- (NSString *) timeStamp {
return [NSString stringWithFormat:@"%f",[[NSDate date] timeIntervalSince1970] * 1000];
}

Get timestamp in PHP:

here is the function get timestamp in php:

<?php
$t=time();
echo($t . "<br>");
echo(date("Y-m-d",$t));
?>

Get timestamp in C#:

Function that creates a timestamp in c#

public static String GetTimestamp(this DateTime value)
{
return value.ToString("yyyyMMddHHmmssffff");
}

Get timestamp in Python:

here is the simple way to get time in python;

Python 2.7.3 (default, Apr 24 2012, 00:00:54)
[GCC 4.7.0 20120414 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> ts = time.time()
>>> print ts
1355563265.81
>>> import datetime
>>> st = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S')
>>> print st
2012-12-15 01:21:05
>>>

Get timestamp in Perl:

getting time in perl for this way:

If you want to control the format of the timestamp, I usually throw in a subroutine like the following. This will return a scalar in the format of "20120928 08:35:12".

sub getCurrentTime {

my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
my $nice_timestamp = sprintf ( "%04d%02d%02d %02d:%02d:%02d",
$year+1900,$mon+1,$mday,$hour,$min,$sec);
return $nice_timestamp;
}

Then change your code to:

my $timestamp = getCurrentTime ();

Happy Coding!!!

Declare an array, Converting an array to list and create ArrayList (ArrayList) from array (T[]) in Java

3:10 AM C4KTeam No comments

Declare an Array in Java

You can either use array declaration or array literal (but only when you declare and affect the variable right away, array literals cannot be used for re-assigning an array).

For primitive types:

int[] myIntArray = new int[3];
int[] myIntArray = {1,2,3};
int[] myIntArray = new int[]{1,2,3};

For classes, for example String, it's the same:

String[] myStringArray = new String[3];
String[] myStringArray = {"a","b","c"};
String[] myStringArray = new String[]{"a","b","c"};

Converting an array to list in Java

Integer[] spam = new Integer[] { 1, 2, 3 };
Arrays.asList(spam);

Or

ArrayList<String> stock_list = new ArrayList<String>();
stock_list.add("stock1");
stock_list.add("stock2");
String[] stockArr = new String[stock_list.size()];
stockArr = stock_list.toArray(stockArr);
for(String s : stockArr)
System.out.println(s);

and
Create ArrayList (ArrayList<T>) from array (T[]) in Java

new ArrayList<Element>(Arrays.asList(array))

Or

Element[] array = new Element[] { new Element(1),new Element(2),new Element(3) };

The simplest answer is to do:

List<Element> list = Arrays.asList(array);

Happy Coding!!!

Reverse String in Java and Android

2:58 AM C4KTeam No comments

Are you getting problem during reverse string in java or android, here is the simple solution fro reverse string.

First things, Just define this string:

String tempString = "AndroidandJavaTutorials";
String reverseString = new StringBuffer(tempString).reverse().toString();
System.out.printf(" original String -> %s , reversed String %s %n", tempString, reverseString);

tempString = "pRAndroid";
reverseString = new StringBuilder(tempString).reverse().toString();
System.out.printf(" original String- > %s , reversed String %s %n", tempString, reverseString);

Now, Call the funtion, where exactly process of reserve:

public static String reverse(String source){
if(source == null || source.isEmpty()){
return source;
}
String reverse = "";
for(int i = source.length() -1; i>=0; i--){
reverse = reverse + source.charAt(i);
}

return reverse;
}

Final output of above tempString:

original String -> AndroidandJavaTutorials , reversed String slairotuTavaJdnadiordnA
original String- > pRAndroid , reversed String diordnARp

Happy Coding!!!

Common Errors while Developing Android Application

3:25 AM C4KTeam No comments

NullPointer error
1. when i use un initialized variable or object we are creating. (Java)
2. when we use some layout out view that is not in xml what we set in context.(Android)

ClassCast Exception
- when a program attempts to cast a an object to a type with which it is not compatible. (eg: when i try to use a linear layout which is declared as a relative layout in xml layout).

StackOverflowError
- it can also occur in correctly written (but deeply recursive) programs.(java and android)
- when a program becomes infinitely recursive.
- we create layout (deep and complex) that exceeds that stack of platform or virtual machine . recursive or too much of layout will create Stack overflow error in Android
- Too many inner layouts.

ActivityNotFoundException: Unable to find explicit activity class exception
- The activity is not declared in manifest.

Android securityException
- You need to declare all permission in the application Manifest that your application check this link (internet, access to contact,gps,wifi state,write to SDCard, etc).

OutofMemoryError
- when a request for memory is made that can not be satisfied using the available platform resources . mainly using bit map, gallery , etc.

Application Not Responding (ANR)
- Mainly comes when you are making network function,or some long process.
this will block UI Thread so user can not do any work. to avoid ANR read this & this

This are thing i mainly get while creating Android Project.

Try to use Try - Catch block in All Place of program. Dont leave your catch block empty as this can hide errors:

Yes:

 try{
    // try something
  } catch (Exception e) {
      Log.e("TAG", "Exception in try catch", e);
      return false;
  }
  return true;

No:

  try{
    // try something
  } catch (Exception e) {
    return false;
  }
  return true;

Use proper Naming conversion for all variable and ID's in Layout.*

one article from net it contains some error now i am adding that alos if it have redundancy please forgive me.

Issue : My previously nice RelativeLayout is making an ugly heap or some elements aren't visible anymore...What's going on ??? I just moved an element in it... Solution : Never forget that in a RelativeLayout, elements are referenced and placed in relation to their neighbours. Maybe there is something wrong in the hierarchy of relationship between your element. Try opening the outline view in Eclipse and clicking each element to see where there is a rupture.

Issue : Circular dependencies cannot exist in RelativeLayout Solution : You have probably written the same dependency in two different way. For instance an ImageView as the attribute android:layout_toRightOf a TextView and the TextView has android:layout_toLeftOf the ImageView. Only one of them is necessary
Issue : I wrote a style for one of my view/layout, but when I apply it in my xml, I have no display in the layout viewer of Eclipse Solution : Unfortunately, this seems to be a bug of the android ADT, I reported it but no news so far. Anyway, no panic, styles are working well, but they aren't displayed properly in Eclipse. Just build the app and launch it on the emulator or phone and you will see if everything is fine or not.

Issue : Toast is written properly but nothing is displayed Solution : This is a common error of use : just add the .show() method to show the Toast and see if it is working well

Issue : I tried to display a String from strings.xml but I just had a number like 0x7f060001 Solution : This is not a bug, just a display due to the way android deals with resources. When you want to retrieve a resource, you have to use a method like getString(R.id.something), getDrawable, …Otherwise, you just display the reference written in the R class

Issue : Some change in code doesn't have any effect in the application Solution : there are 2 options, either you have forgotten something like the .show() of the Toast, or the emulator is not updating properly your application. In that case, you have to check the option “Wipe user Data” in your launch configuration of the emulator in Eclipse.

Issue : How to display borders on my table? Solution : There is no direct way to do that in android, you have to use a trick :http://www.droidnova.com/display-borders-in-tablelayout,112.html

Issue : the emulator is writing in japaneese withtout you having changed any parameter Solution : This happens sometimes, quite easy to fix, just long click in any EditText field, and change the input type to what you want

Issue : I can't get the Context Menu to appear in the emulator Solution : long click on emulator does not seem to register on every kind of view, you have to push the button in the center of the 4 directionnal arrows

Issue : I'm following a tutorial about map route but I can't get it work, android does not find a package Solution : You might have been following a tutorial written for 1.5 SDK. At this time, there was a package to display route in android, but it was removed in the next SDK and is not available anymore. It just not possible anymore. There seems to be a trick with KML files but nothing official

Issue : Sending coordinates to the emulator gives wrong position Solution : ensure that you wrote the coordinate like 51.16548 and not 51,16548 nor 5116548

Issue : Only the original thread that created a view hierarchy can touch its views. Solution : You must have tried to update a view content from another thread than the UI thread. 2 options to patch this : either create a handler in your UI thread and post your Runnable to this handler OR use the method runOnUIThread to run the lines of code that are doing the update

Issue : accessing localhost 127.0.0.1 doesn't work Solution : it works, you are just not doing it the right way : use 10.0.2.2

Source

Happy Coding!!!

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