JSON Parsing Android

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

public class NewsHandelar {

public static String ResponceStr;
public static final int GET = 1;
public static final int POST = 2;


public NewsHandelar()
{

}
public String MakeSystemCall(String url, int Method) {

return this.MakeSystemCall(url, Method, null);
}
private String MakeSystemCall(String url, int method, List<NameValuePair> param) {

try {
            // http client
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpEntity httpEntity = null;
            HttpResponse httpResponse = null;
           
            // Checking http request method type
            if (method == POST) {
                HttpPost httpPost = new HttpPost(url);
                // adding post params
                if (param != null) {
                    httpPost.setEntity(new UrlEncodedFormEntity(param));
                }

                httpResponse = httpClient.execute(httpPost);

            } else if (method == GET) {
                // appending params to url
                if (param != null) {
                    String paramString = URLEncodedUtils
                            .format(param, "utf-8");
                    url += "?" + paramString;
                }
                HttpGet httpGet = new HttpGet(url);

                httpResponse = httpClient.execute(httpGet);

            }
            httpEntity = httpResponse.getEntity();
            ResponceStr = EntityUtils.toString(httpEntity);

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
       
        return ResponceStr;

    }
}







import java.util.ArrayList;
import java.util.HashMap;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.util.Log;
import android.view.Menu;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class MainActivity extends ListActivity {

ProgressDialog pDialog;
public static final String Url="http://mfeeds.timesofindia.indiatimes.com/Feeds/jsonfeed?newsid=3947071&amp;amp;format=simplejson";
public static String NewsMl="NewsML";
public static String HEAD_LINES="HeadLine";
public static String DATE_LINE="DateLine";
JSONArray NEWSML;
ArrayList<HashMap<String, String>> NewsShow;
ListView li;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

NewsShow=new ArrayList<HashMap<String,String>>();
li=getListView();
new GetAllNews().execute();
}

public class GetAllNews extends AsyncTask<Void, Void, Void> {

@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog=new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please Wait...");
pDialog.setCancelable(false);
pDialog.show();
}

@Override
protected Void doInBackground(Void... params) {

NewsHandelar NH=new NewsHandelar();
// Log.i("All Details", "In DoinBackground");
String JsonStr=NH.MakeSystemCall(Url, NewsHandelar.GET);
if(JsonStr!=null)
{
try {
JSONObject jsonObject=new JSONObject(JsonStr);
//Log.i("All Details", String.valueOf(jsonObject));
NEWSML=jsonObject.getJSONArray(NewsMl);
for(int i=0;i<NEWSML.length();i++)
{
JSONObject NewsLines=NEWSML.getJSONObject(i);
//Log.i("All Details", String.valueOf(NewsLines));
JSONObject FinalNews=NewsLines.getJSONObject("NewsLines");
//Log.i("All Details", String.valueOf(FinalNews));
String Header=FinalNews.getString(HEAD_LINES);
String Footer=FinalNews.getString(DATE_LINE);
Log.i("Header and Footer", Header + Footer);
HashMap<String, String> Newslist=new HashMap<String, String>();
Newslist.put(HEAD_LINES, Header);
Newslist.put(DATE_LINE, Footer);
NewsShow.add(Newslist);

Log.i("All Details", String.valueOf(NewsShow));
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else
{
Log.e("ServiceHandler", "Couldn't get any data from the url");
}

return null;
}

@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if(pDialog.isShowing())
pDialog.dismiss();
ListAdapter Adapter=new SimpleAdapter(MainActivity.this, NewsShow, R.layout.news_row, new String[]{HEAD_LINES, DATE_LINE}, new int[]{R.id.textView1, R.id.textView2});
setListAdapter(Adapter);
}
}

}

news_row.xml

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

<TextView

        android:id="@+id/textView1"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:paddingBottom="2dip"

        android:paddingTop="6dip"

        android:textColor="#43bd00"

        android:textSize="16sp"

        android:textStyle="bold" 

        android:text="Text1"/>

 

    <!--Date Info -->

    <TextView

        android:id="@+id/textView2"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:paddingBottom="2dip"

        android:textColor="#acacac"

        android:text="Text2" />

</LinearLayout>

activity_main.xml

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical">

    <!-- Main ListView 

         Always give id value as list(@android:id/list)

    -->

    <ListView

        android:id="@android:id/list"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"/>

 

   

</LinearLayout>

View Class Example in Android

public class AboutActivity extends Activity{
AboutView mAbout;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

mAbout =new AboutView(this);

                setContentView(mAbout );
}

}

public class AboutView extends View {

Rect mRectBackground;

Bitmap mBackground;

Paint mPaint;

public AboutView(Context context) {

super(context);

// TODO Auto-generated constructor stub

//initialize all the bitmaps and rect

}

@Override

protected void onDraw(Canvas canvas) {

// TODO Auto-generated method stub

super.onDraw(canvas);

              //Draw here ............

}

}

Voice Recording And Playing in Android

private void startRecording() {
File sampleDir = Environment.getExternalStorageDirectory();
if (mAudiofile == null) {
try {
//mAudiofile = File.createTempFile("sound1", ".amr", sampleDir);
mAudiofile = File.createTempFile("sound1", ".amr");
mAudiofile.deleteOnExit();
} catch (IOException e) {
Log.e("Sound Recording", "sdcard access error");
return;
}
}

mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mRecorder.setOutputFile(mAudiofile.getAbsolutePath());
Log.e("Absolute path", "path "+mAudiofile.getAbsolutePath());
try {
mRecorder.prepare();
mRecorder.start();
} catch (Exception e) {
e.printStackTrace();
}
}



public void stopRecordingAndPlay() {

mMode=ERecordingState.EStatePlayingAudio;
if(mSoundPool != null)
{
try
{
mSoundPool.unload(mSoundId);
}
catch(Exception e)
{

}

}
mSoundPool = new SoundPool(1, AudioManager.STREAM_MUSIC, 0);
mRecorder.stop();
mRecorder.release();
mRecorder=null;
Log.w("Inside", "here3");

mSoundId = 0;
mSoundId = mSoundPool.load(mAudiofileForRecord.getAbsolutePath(), 0);
mSoundPool.setOnLoadCompleteListener(this);

}



@Override
public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
// TODO Auto-generated method stub
if(mMode!=ERecordingState.EStateIdle)
mSoundPool.play(mSoundId, 1, 1, 0, 0, PITCH);

}

Creating PhysicsWorld Object in Android

        private void createPhysics()
{
 physicsWorld = new PhysicsWorld(new Vector2(0,                          SensorManager.GRAVITY_EARTH), false);
     yourScene.registerUpdateHandler(physicsWorld);
}

Color Base Collision in Android

public  boolean isCollide(int x, int y)
{
int color = Color.TRANSPARENT;

try {
color = mBitmap.getPixel(
Math.abs(x- mLiveBitmap.mX),
Math.abs(y- mLiveBitmap.mY));
} catch (Exception e) {
}

 if (color != Color.TRANSPARENT)
                {
return true;
}

return false;
}

SurfaceView Android Example

Example of Surface View

public class GameView extends SurfaceView
{
private SurfaceHolder surfaceHolder;

public GameView(Context context) {

               init();
}

private void init() {

surfaceHolder = getHolder();

surfaceHolder.addCallback(new SurfaceHolder.Callback() {

@Override
public void surfaceCreated(SurfaceHolder holder) {
surfaceHolder = holder;
mTask = new MySurfaceViewThread(holder);
mTask.start();
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
Log.w("surfaceChanged", "Running.......");
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
mTask.postStop();
}
});
}

public void draw(Canvas c) {

//Draw Something

}


public class MySurfaceViewThread extends Thread {
private SurfaceHolder holder = null;

private volatile boolean run = true;
Canvas c;

public MySurfaceViewThread(SurfaceHolder h) {
holder = h;
}

@Override
public void run() {

while (run) {


try {


if (holder.getSurface().isValid()) {
c = holder.lockCanvas();

draw(c);

}


holder.unlockCanvasAndPost(c);

}
}
}

public void postStop() {
run = false;
}
}


}

Capture Screenshot Android Example

public Bitmap captureScreen() {
Bitmap screenshot = null;
try {

screenshot = Bitmap.createBitmap(MmitApp.Context()
.GetScreenResolution().x, MmitApp.Context()
.GetScreenResolution().y, Config.ARGB_8888);
Canvas canvas = new Canvas(screenshot);

                            //if you required to draw any thing during Screen Shot it will be also captured.
                            canvas.drawBitmap(aBitMap, aX, aY, MmitApp.mPaint);

} catch (Exception e) {
Log.d("ScreenShotActivity", "Failed to capture screenshot because:"
+ e.getMessage());
}

return screenshot;
}