Sunday, 2 December 2012

Get all information in a android phone

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Saturday, 1 December 2012

XML Parsing in Android

Xml stands for extensible markup language.There are types of parsing methods in android

1 SaxPullparser

2 DOM parser

Here we are using SaxPullparser ,because it is more efficient that any other parser in android.

Following is a example for XML parsing using SaxPullparser

CustomXML.java

package fortyonepost.com.cx;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import teste.com.teste.R;

import android.app.Activity;

import android.content.res.Resources;

import android.content.res.XmlResourceParser;

import android.os.Bundle;

import android.util.Log;

import android.widget.Toast;

public class CustomXML extends Activity

{

//this object will store a reference to the Activity's resources

private Resources resources;

//this integer will store the XMLResourceParser events

private int event;

//a boolean that will tell if it's the tag we are looking for

private boolean isCorrectTag = false;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//get the application's resources

resources = this.getResources();

try

{

GetAttributes("tutorial");

GetAttributes("level1");

}

catch (XmlPullParserException e)

{

//Display a toast message.

Toast.makeText(this, "Could not retrieve the current parser event", Toast.LENGTH_SHORT);

}

catch (IOException e)

{

//Display a toast message.

Toast.makeText(this, "Could not read XML file", Toast.LENGTH_SHORT);

}

public void GetAttributes(String tagName) throws XmlPullParserException, IOException

{

//get a XmlResourceParser object to read contents of the 'custom.xml' file

XmlResourceParser parser = resources.getXml(R.xml.custom);

//get the initial parser event

event = parser.getEventType();

//while haven't reached the end of the XML file

while (event != XmlPullParser.END_DOCUMENT)

{

//get the type of the event

event = parser.getEventType();

//if parser finds a new tag and its name equals 'tagName'

if (event == XmlPullParser.START_TAG && parser.getName().contentEquals(tagName))

{

//print the attribute values at LogCat

//print the ID

Log.i("CustomXML", "id:" + parser.getIdAttribute());

//print the difficulty

float difficulty = parser.getAttributeFloatValue(null, "difficulty", 0.0f);

Log.i("CustomXML", "difficulty:" + Float.toString(difficulty));

//print the number of enemies

int enemies = parser.getAttributeIntValue(null, "enemies", 0);

Log.i("CustomXML", "enemies:" + Integer.toString(enemies));

//Found the tag, set the boolean to true

isCorrectTag = true;

}

else if (event == XmlPullParser.TEXT && isCorrectTag)

{

//Print the tag's content

Log.i("CustomXML", parser.getText());

//set isCorrectTag to false;

isCorrectTag = false;

//break the loop, we already found what we were looking for

break;

}

//go to the next tag

parser.next();

}

//Release resources associated with the parser

parser.close();

}

place a xml file in res-xm1-custom.xml

<?xml version="1.0" encoding="utf-8"?>

<tutorial id="level" difficulty="1.5" enemies="3">The tutorial.</tutorial>

<level1 id="level" difficulty="2.6" enemies="10">The first level.</level1>

</resources>

check the logcat in your emulator for output

http://androiddeveloperszone.blogspot.in/

Android Custom Spinner with Intent

Following is a example program for custom spinner in android and user can select a particular item and leads to specific activity.

NewspinnerActivity.java

package adsdfd.ghgh;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.Spinner;

import android.widget.TextView;

public class NewspinnerActivity extends Activity {

String[] strings = {"CoderzHeaven","Google",

"Microsoft", "Apple", "Yahoo","Samsung"};

String[] subs = {"Heaven of all working codes ","Google sub",

"Microsoft sub", "Apple sub", "Yahoo sub","Samsung sub"};

int arr_images[] = { R.drawable.icon,

R.drawable.icon, R.drawable.icon,

R.drawable.icon, R.drawable.icon, R.drawable.icon};

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Spinner mySpinner = (Spinner)findViewById(R.id.spinner);

mySpinner.setAdapter(new MyAdapter(NewspinnerActivity.this, R.layout.row, strings));

}

public class MyAdapter extends ArrayAdapter<String>{

public MyAdapter(Context context, int textViewResourceId, String[] objects) {

super(context, textViewResourceId, objects);

}

@Override

public View getDropDownView(int position, View convertView,ViewGroup parent) {

return getCustomView(position, convertView, parent);

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

System.out.println("abcdddddddddddd"+position);

Intent i=new Intent(getApplicationContext(),abcd.class);

startActivity(i);

return getCustomView(position, convertView, parent);

}

public View getCustomView(int position, View convertView, ViewGroup parent) {

LayoutInflater inflater=getLayoutInflater();

View row=inflater.inflate(R.layout.row, parent, false);

TextView label=(TextView)row.findViewById(R.id.company);

label.setText(strings[position]);

TextView sub=(TextView)row.findViewById(R.id.sub);

sub.setText(subs[position]);

ImageView icon=(ImageView)row.findViewById(R.id.image);

icon.setImageResource(arr_images[position]);

return row;

}

then following are the xml file and in main.xml

<?xml version="1.0" encoding="utf-8"?>

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

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="@drawable/icon"

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

<Spinner

android:id="@+id/spinner"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:drawSelectorOnTop="true"

android:prompt="@string/prompt"

</LinearLayout>

then the row.xml

<?xml version="1.0" encoding="utf-8"?>

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

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="vertical"

android:padding="3dip"

<ImageView

android:id="@+id/image"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/icon"/>

<TextView

android:layout_toRightOf="@+id/image"

android:padding="3dip"

android:layout_marginTop="2dip"

android:textColor="@drawable/red"

android:textStyle="bold"

android:id="@+id/company"

android:text="CoderzHeaven"

android:layout_marginLeft="5dip"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<TextView

android:layout_toRightOf="@+id/image"

android:padding="2dip"

android:textColor="@drawable/darkgrey"

android:layout_marginLeft="5dip"

android:id="@+id/sub"

android:layout_below="@+id/company"

android:text="Heaven of all working codes"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

</RelativeLayout>

abcd.class

package adsdfd.ghgh;

import android.app.Activity;

import android.os.Bundle;

public class abcd extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.abcd);

}

http://androiddeveloperszone.blogspot.in/

Download Android Codes From SkyBlueAndroid