shadman kudchikar

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13 Posts 7 Threads 0 Cows

since May 03, 2016

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Recent posts by shadman kudchikar

JSF web application nul pointer exception

Please help my website gives null pointer exception when i submit my form
My index.xhtml page

my newManagedJSFbean

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.inject.Named;
import javax.enterprise.context.Dependent;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
/**
*
* @author Keep Smiling
*/
@ManagedBean(name="user")
@RequestScoped
public class NewJSFManagedBean {
String pname="";
   /**
    * Creates a new instance of NewJSFManagedBean
    */
   public NewJSFManagedBean() {
   }
   
   
   // Add business logic below. (Right-click in editor and choose
   // "Insert Code > Add Business Method")
   public String getPname() {
       return pname;
   }
   public void setPname(String pname) {
       this.pname = pname;
   }
   
   public String insert() throws ClassNotFoundException, SQLException
   {
       Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
       Connection c=DriverManager.getConnection("jdbc:odbc:adb");
       PreparedStatement ps=c.prepareStatement("INSERT INTO product(pname) VALUES(?)");
       ps.setString(1,pname);
       ps.executeUpdate();
       return "success";
       
   }
   
}

my faces config page

5 years ago

JSF

RC4 Algorithm in java Please Review

Is My algorithm is correct please review guys?

5 years ago

Security

Is this my arrayadapter class is correct please review and tell me

Below is my code when is use this adapter my activity restarts and after while gets close

package com.downloadsongsdownload.musiqa;
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class SongAdapter extends ArrayAdapter<Song> {
public SongAdapter(Context context, int resource, List<Song> songList) {
super(context, resource, songList);
// TODO Auto-generated constructor stub
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Song song=(Song)getItem(position);
if(convertView==null )
{
convertView= LayoutInflater.from(getContext()).inflate(R.layout.item_song, parent, false);
}
TextView title = (TextView) convertView.findViewById(R.id.song_name);
      TextView artist = (TextView) convertView.findViewById(R.id.song_artist);
      TextView album = (TextView) convertView.findViewById(R.id.song_album);
     
      title.setText(song.title);
      artist.setText(song.artist);
      album.setText(song.album);
     
      return convertView;
}
}

Below is my activity using this adapter

package com.downloadsongsdownload.musiqa;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.widget.ListView;
import android.widget.Toast;
import com.downloadsongsdownload.musiqa.MusicService.MusicBinder;
public class SongsList extends Activity {
protected MusicService musicService;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.song_listview);
Intent musicServiceIntent=new Intent(this,MusicService.class);
ServiceConnection conn=new ServiceConnection(){
@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
// TODO Auto-generated method stub
MusicBinder musicBinder=(MusicBinder)arg1;
musicService=musicBinder.getServices();
Toast.makeText(getApplicationContext(), "Service is Started", Toast.LENGTH_LONG).show();
}
@Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
}
};
getApplicationContext().bindService( musicServiceIntent, conn,Context.BIND_AUTO_CREATE);
ListView lv=(ListView)findViewById(R.id.listview);
//lv.setAdapter(new SongAdapter(this,R.layout.item_song,musicService.songList));
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
}
}

5 years ago

Android

Image scaleType "center" keeps aspect ratio or not ?

Yeah keep adjustviewbound to true

6 years ago

Android

Image scaleType "center" keeps aspect ratio or not ?

No it is managed by adjustviewbounds

6 years ago

Android

Service public method is not firing my activity restarts

this is in my main activity

this is in my service class

6 years ago

Android

Main is not binding with service

main activity is not binding with music service please help

6 years ago

Android

MainActivity is not binding with service

This is my main activity

package com.downloadsongsdownload.musiqa;
import java.util.concurrent.TimeUnit;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaMetadataRetriever;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.view.GestureDetectorCompat;
import android.view.GestureDetector;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import com.downloadsongsdownload.musiqa.MusicService.MusicBind;
@SuppressLint("NewApi")
public class MainActivity extends Activity implements  GestureDetector.OnGestureListener, OnDoubleTapListener {
//constant and member use by activity
private static final float SWIPE_VELOCITY_THRESHOLD = 100;
private static final float SWIPE_THRESHOLD = 100;
private ImageView coverart;
private Button b1,b2,b3,b4;
Intent playIntent;
MusicService musicService;
boolean serviceConn=false;
private Handler myHandler = new Handler();
private SeekBar seekbar;
private TextView tx1,tx2;
GestureDetectorCompat gd;
// a service connection object for bindservice method that binds music player with layout
ServiceConnection conn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.musiqa);
conn=new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName arg0) {
serviceConn=false;
}
@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
MusicBind musicBind=(MusicBind) arg1;
musicService=musicBind.getService();
serviceConn=true;
}
};
//start method that bind music service with activity
  if(playIntent==null)
  {
  playIntent=new Intent(this, MusicService.class);
  bindService(playIntent, conn,Context.BIND_AUTO_CREATE);
     startService(playIntent);
  }
   if(serviceConn)
{
//add listeners to all buttons in layout
 gd=new GestureDetectorCompat(this,this);
 gd.setOnDoubleTapListener(this);
 coverart=(ImageView) findViewById(R.id.imageView);
 b1 = (Button) findViewById(R.id.button1);
     b2 = (Button) findViewById(R.id.button2);
     b3=(Button)findViewById(R.id.button3);
     b4=(Button)findViewById(R.id.button4);
     tx1=(TextView)findViewById(R.id.textView1);
     tx2=(TextView)findViewById(R.id.textView2);
     seekbar=(SeekBar)findViewById(R.id.seekBar);
     seekbar.setClickable(false);
     b2.setEnabled(false);
     b3.setEnabled(false);
     
   
     
     b2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.playSongClicked();
        }
     });
     
     b3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.pause();
        }
     });
     
     b4.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.jumpForward();
        }
     });
     
   
     
     b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.jumpBackward();
        }
     });
     
     musicService.setOnCompletionListener(new OnCompletionListener()
     {
   public void onCompletion(MediaPlayer theMediaPlayer) {
    playSong();
   }
  });      
 
   
playSong();
    getPlaylist();
}
  }
//Runnable that update seekbar and duration label in layout
private Runnable UpdateSongTime = new Runnable() {
     public void run() {
        double startTime = musicService.getStartTime();
        tx1.setText(String.format("%d:%d",
       
        TimeUnit.MILLISECONDS.toMinutes((long) startTime),
        TimeUnit.MILLISECONDS.toSeconds((long) startTime) -
        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.
        toMinutes((long) startTime)))
        );
        seekbar.setProgress((int)startTime);
        myHandler.postDelayed(this, 100);
     }
  };
 
   /**
    * Receiving song index from playlist view
    * and play the song
    * */
   @Override
   protected void onActivityResult(int requestCode,
                                    int resultCode, Intent data) {
       super.onActivityResult(requestCode, resultCode, data);
       if(resultCode == 100){
           Uri currentSong = Uri.parse(data.getExtras().getString("Uri"));
           musicService.songPlaying=currentSong;
           musicService.songID=data.getExtras().getString("songID");            
           musicService.playSong();
           playSong();
       }
   }
 
   //create layout according to song selected or playing in background
   void playSong()
{
    if(musicService.songPlaying != null)
    {
getCover(musicService.songPlaying);
 seekbar.setMax((int) musicService.finalTime);            
    tx2.setText(String.format("%d:%d",
    TimeUnit.MILLISECONDS.toMinutes((long) musicService.finalTime),
    TimeUnit.MILLISECONDS.toSeconds((long) musicService.finalTime) -
    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes((long) musicService.finalTime)))
    );
   
    tx1.setText(String.format("%d:%d",
    TimeUnit.MILLISECONDS.toMinutes((long) musicService.getStartTime()),
    TimeUnit.MILLISECONDS.toSeconds((long) musicService.getStartTime()) -
    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes((long) musicService.getStartTime()))));
    seekbar.setProgress((int)musicService.getStartTime());
    myHandler.postDelayed(UpdateSongTime,100);
    b2.setEnabled(false);
    b3.setEnabled(true);
}
}
   
   //pause song
void pause()
{
b2.setEnabled(true);
       b3.setEnabled(false);
}
//create songslist intent and show songs list activity
protected void getPlaylist()
{
Intent i = new Intent(this, Playlist.class);
      startActivityForResult(i, 100);
}
//sets cover art in layout according to song selected
protected void getCover(Uri currentSong)
{
android.media.MediaMetadataRetriever mmr = new MediaMetadataRetriever();
      mmr.setDataSource(this, currentSong);
      byte [] data = mmr.getEmbeddedPicture();
             //coverart is an Imageview object
     
// convert the byte array to a bitmap
      if(data != null)
      {
          Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
          coverart.setImageBitmap(bitmap); //associated cover art in bitmap
          coverart.setAdjustViewBounds(true);
         
      }
      else
      {
          coverart.setImageResource(R.drawable.cover_art); //any default cover resourse folder
          coverart.setAdjustViewBounds(true);
         
      }
}
// rest below is ui and gesture no need for explanation
protected void onSwipeRight()
{
}
protected void onSwipeLeft()
{
musicService.getNextSong();
musicService.playSong();
}
protected void onSwipeTop()
{
getPlaylist();
}
protected void onSwipeBottom()
{
}
@Override
   public boolean onTouchEvent(MotionEvent event) {
       gd.onTouchEvent(event);
       return super.onTouchEvent(event);
   }
   @Override
   public boolean onSingleTapConfirmed(MotionEvent e) {
       
       return true;
   }
   @Override
   public boolean onDoubleTap(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onDoubleTapEvent(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onDown(MotionEvent e) {
       
       return true;
   }
   @Override
   public void onShowPress(MotionEvent e) {
     
   }
   @Override
   public boolean onSingleTapUp(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
     
       return true;
   }
   @Override
   public void onLongPress(MotionEvent e) {
       
   }
   @Override
   public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
    Boolean result=false;
try
{
float diffY = e2.getY() - e1.getY();
       float diffX = e2.getX() - e1.getX();
       if (Math.abs(diffX) > Math.abs(diffY)) {
           if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
               if (diffX > 0) {
                   onSwipeRight();
               } else {
                   onSwipeLeft();
               }
           }
           result = true;
       }
       else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
               if (diffY > 0) {
                   onSwipeBottom();
               } else {
                   onSwipeTop();
               }
           }
           result = true;
   } catch (Exception exception) {
       exception.printStackTrace();
   }
   return result;
   }
/*/prevents task from being destroyed
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}*/
}

This is my manifest file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.downloadsongsdownload.musiqa"
   android:versionCode="1"
   android:versionName="1.0" >
   <uses-sdk
       android:minSdkVersion="3"
       android:targetSdkVersion="18" />
   <application
       android:icon="@drawable/ic_launcher"
       android:label="@string/app_name"
       android:theme="@style/AppTheme"
       android:enabled="true"  >
       <activity
           android:name="com.downloadsongsdownload.musiqa.MainActivity"
           android:label="@string/app_name"
           android:launchMode="standard"   >
           <intent-filter>
               <action android:name="android.intent.action.MAIN" />
               <category android:name="android.intent.category.LAUNCHER" />
           </intent-filter>
       </activity>
          <activity
           android:name="com.downloadsongsdownload.musiqa.Playlist" ></activity>
         
          <service
         android:enabled="true"          
        android:name="com.downloadsongsdownload.musiqa.MusicService" >
</service>
 
   </application>
</manifest>

6 years ago

Android

Main is not binding with service

Thanks for your suggestion i will give it a try

6 years ago

Android

Main is not binding with service

When i run my app my mobile restarts thats it

6 years ago

Android

Main is not binding with service

This is main activity

package com.downloadsongsdownload.musiqa;
import java.util.concurrent.TimeUnit;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaMetadataRetriever;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.view.GestureDetectorCompat;
import android.view.GestureDetector;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import com.downloadsongsdownload.musiqa.MusicService.MusicBind;
@SuppressLint("NewApi")
public class MainActivity extends Activity implements  GestureDetector.OnGestureListener, OnDoubleTapListener {
//constant and member use by activity
private static final float SWIPE_VELOCITY_THRESHOLD = 100;
private static final float SWIPE_THRESHOLD = 100;
private ImageView coverart;
private Button b1,b2,b3,b4;
Intent playIntent;
MusicService musicService;
boolean serviceConn=false;
private Handler myHandler = new Handler();
private SeekBar seekbar;
private TextView tx1,tx2;
GestureDetectorCompat gd;
// a service connection object for bindservice method that binds music player with layout
ServiceConnection conn=new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName arg0) {
serviceConn=false;
}
@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
MusicBind musicBind=(MusicBind) arg1;
musicService=musicBind.getService();
serviceConn=true;
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.musiqa);
//add listeners to all buttons in layout
 gd=new GestureDetectorCompat(this,this);
 gd.setOnDoubleTapListener(this);
 coverart=(ImageView) findViewById(R.id.imageView);
 b1 = (Button) findViewById(R.id.button1);
     b2 = (Button) findViewById(R.id.button2);
     b3=(Button)findViewById(R.id.button3);
     b4=(Button)findViewById(R.id.button4);
     tx1=(TextView)findViewById(R.id.textView1);
     tx2=(TextView)findViewById(R.id.textView2);
     seekbar=(SeekBar)findViewById(R.id.seekBar);
     seekbar.setClickable(false);
     b2.setEnabled(false);
     b3.setEnabled(false);
     
     //start method that bind music service with activity
  if(playIntent==null)
  {
  playIntent=new Intent(this, MusicService.class);
  bindService(playIntent, conn, BIND_AUTO_CREATE);  
 
  }
     
     b2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.playSongClicked();
        }
     });
     
     b3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.pause();
        }
     });
     
     b4.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.jumpForward();
        }
     });
     
   
     
     b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        musicService.jumpBackward();
        }
     });
     
     musicService.setOnCompletionListener(new OnCompletionListener()
     {
   public void onCompletion(MediaPlayer theMediaPlayer) {
    playSong();
   }
  });      
 
     if(serviceConn)
  {
  playSong();
      getPlaylist();
  }
  }
//Runnable that update seekbar and duration label in layout
private Runnable UpdateSongTime = new Runnable() {
     public void run() {
        double startTime = musicService.getStartTime();
        tx1.setText(String.format("%d:%d",
       
        TimeUnit.MILLISECONDS.toMinutes((long) startTime),
        TimeUnit.MILLISECONDS.toSeconds((long) startTime) -
        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.
        toMinutes((long) startTime)))
        );
        seekbar.setProgress((int)startTime);
        myHandler.postDelayed(this, 100);
     }
  };
 
   /**
    * Receiving song index from playlist view
    * and play the song
    * */
   @Override
   protected void onActivityResult(int requestCode,
                                    int resultCode, Intent data) {
       super.onActivityResult(requestCode, resultCode, data);
       if(resultCode == 100){
           Uri currentSong = Uri.parse(data.getExtras().getString("Uri"));
           musicService.songPlaying=currentSong;
           musicService.songID=data.getExtras().getString("songID");            
           musicService.playSong();
           playSong();
       }
   }
 
   //create layout according to song selected or playing in background
   void playSong()
{
    if(musicService.songPlaying != null)
    {
getCover(musicService.songPlaying);
 seekbar.setMax((int) musicService.finalTime);            
    tx2.setText(String.format("%d:%d",
    TimeUnit.MILLISECONDS.toMinutes((long) musicService.finalTime),
    TimeUnit.MILLISECONDS.toSeconds((long) musicService.finalTime) -
    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes((long) musicService.finalTime)))
    );
   
    tx1.setText(String.format("%d:%d",
    TimeUnit.MILLISECONDS.toMinutes((long) musicService.getStartTime()),
    TimeUnit.MILLISECONDS.toSeconds((long) musicService.getStartTime()) -
    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes((long) musicService.getStartTime()))));
    seekbar.setProgress((int)musicService.getStartTime());
    myHandler.postDelayed(UpdateSongTime,100);
    b2.setEnabled(false);
    b3.setEnabled(true);
}
}
   
   //pause song
void pause()
{
b2.setEnabled(true);
       b3.setEnabled(false);
}
//create songslist intent and show songs list activity
protected void getPlaylist()
{
Intent i = new Intent(getApplicationContext(), Playlist.class);
      startActivityForResult(i, 100);
}
//sets cover art in layout according to song selected
protected void getCover(Uri currentSong)
{
android.media.MediaMetadataRetriever mmr = new MediaMetadataRetriever();
      mmr.setDataSource(this, currentSong);
      byte [] data = mmr.getEmbeddedPicture();
             //coverart is an Imageview object
     
// convert the byte array to a bitmap
      if(data != null)
      {
          Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
          coverart.setImageBitmap(bitmap); //associated cover art in bitmap
          coverart.setAdjustViewBounds(true);
         
      }
      else
      {
          coverart.setImageResource(R.drawable.cover_art); //any default cover resourse folder
          coverart.setAdjustViewBounds(true);
         
      }
}
// rest below is ui and gesture no need for explanation
protected void onSwipeRight()
{
}
protected void onSwipeLeft()
{
musicService.getNextSong();
musicService.playSong();
}
protected void onSwipeTop()
{
getPlaylist();
}
protected void onSwipeBottom()
{
}
@Override
   public boolean onTouchEvent(MotionEvent event) {
       gd.onTouchEvent(event);
       return super.onTouchEvent(event);
   }
   @Override
   public boolean onSingleTapConfirmed(MotionEvent e) {
       
       return true;
   }
   @Override
   public boolean onDoubleTap(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onDoubleTapEvent(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onDown(MotionEvent e) {
       
       return true;
   }
   @Override
   public void onShowPress(MotionEvent e) {
     
   }
   @Override
   public boolean onSingleTapUp(MotionEvent e) {
     
       return true;
   }
   @Override
   public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
     
       return true;
   }
   @Override
   public void onLongPress(MotionEvent e) {
       
   }
   @Override
   public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
    Boolean result=false;
try
{
float diffY = e2.getY() - e1.getY();
       float diffX = e2.getX() - e1.getX();
       if (Math.abs(diffX) > Math.abs(diffY)) {
           if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
               if (diffX > 0) {
                   onSwipeRight();
               } else {
                   onSwipeLeft();
               }
           }
           result = true;
       }
       else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
               if (diffY > 0) {
                   onSwipeBottom();
               } else {
                   onSwipeTop();
               }
           }
           result = true;
   } catch (Exception exception) {
       exception.printStackTrace();
   }
   return result;
   }
/*/prevents task from being destroyed
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}*/
}

This is Music service

package com.downloadsongsdownload.musiqa;
import java.io.IOException;
import android.app.Service;
import android.content.Intent;
import android.database.Cursor;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Binder;
import android.os.IBinder;
import android.provider.MediaStore;
public class MusicService extends Service implements OnCompletionListener  {
MusicBind musicBind=new MusicBind();
Uri songPlaying=null;
String songID;
MediaPlayer mediaPlayer;
double startTime = 0;
double finalTime = 0;
int forwardTime = 5000;
int backwardTime = 5000;
public class MusicBind extends Binder {
MusicService getService()
{
return MusicService.this;
}
}
@Override
public void onCreate() {
super.onCreate();
mediaPlayer=new MediaPlayer();
mediaPlayer.setOnCompletionListener(this);
}
@Override
public IBinder onBind(Intent arg0) {
return musicBind;
}
public void playSong() {
mediaPlayer.reset();
try {
mediaPlayer.setDataSource(this,songPlaying);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
mediaPlayer.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
playSongClicked();
}
public void getNextSong() {
Uri songUri = Uri.parse("content://media/external/audio/media");
Cursor mCursor=getContentResolver().query(songUri, null,  null,  null,  null);
while(mCursor.moveToNext())
{
if(songID ==mCursor.getString(mCursor.getColumnIndex(MediaStore.Audio.Media._ID)));
{
break;
}
}
if(!mCursor.moveToNext())
{
mCursor.moveToFirst();
}
songID=mCursor.getString(mCursor.getColumnIndex(MediaStore.Audio.Media._ID));
songPlaying=Uri.withAppendedPath(songUri, songID);
}
public void playSongClicked()
{
        mediaPlayer.start();        
        finalTime = mediaPlayer.getDuration();
        startTime = mediaPlayer.getCurrentPosition();
}
public double getStartTime()
{
return mediaPlayer.getCurrentPosition();
}
public void pause()
{
 
         mediaPlayer.pause();
         
}
public void jumpForward()
{
 int temp = (int)getStartTime();
   
   if((temp+forwardTime)<=finalTime){
      startTime = getStartTime() + forwardTime;
      mediaPlayer.seekTo((int) startTime);
      }
 
}
public void jumpBackward()
{
int temp = (int)getStartTime();
       
        if((temp-backwardTime)>0){
           startTime = getStartTime() - backwardTime;
           mediaPlayer.seekTo((int) startTime);            
        }
       
}
@Override
public void onCompletion(MediaPlayer arg0) {
getNextSong();
playSong();
}
public void setOnCompletionListener(OnCompletionListener l)
{
mediaPlayer.setOnCompletionListener(l);
}
}

This is AndroidManifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.downloadsongsdownload.musiqa"
   android:versionCode="1"
   android:versionName="1.0" >
   <uses-sdk
       android:minSdkVersion="3"
       android:targetSdkVersion="18" />
   <application
       android:icon="@drawable/ic_launcher"
       android:label="@string/app_name"
       android:theme="@style/AppTheme"  >
       <activity
           android:name="com.downloadsongsdownload.musiqa.MainActivity"
           android:label="@string/app_name"
           android:launchMode="standard"   >
           <intent-filter>
               <action android:name="android.intent.action.MAIN" />
               <category android:name="android.intent.category.LAUNCHER" />
           </intent-filter>
       </activity>
          <activity
           android:name="com.downloadsongsdownload.musiqa.Playlist" />
         
          <service          
        android:name="com.downloadsongsdownload.musiqa.MusicService" >
</service>
 
   </application>
</manifest>

This playlist Activity

package com.downloadsongsdownload.musiqa;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.app.ListActivity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.view.Menu;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
public class Playlist<View> extends ListActivity  {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor mCursor = musicResolver.query(musicUri, null, null, null, null);
@SuppressWarnings("deprecation")
ListAdapter adapter = new SimpleCursorAdapter(
               this, android.R.layout.two_line_list_item,mCursor,                                              
               new String[] {MediaStore.Audio.Media.TITLE,
                MediaStore.Audio.Media.ARTIST},
               new int[] {android.R.id.text1, android.R.id.text2});  
       
       setListAdapter(adapter);
     
       final ListView list=getListView();
list.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> arg0,
android.view.View arg1, int position, long arg3)
        {
        Uri songUri = Uri.parse("content://media/external/audio/media");
        Uri finalSuccessfulUri;
        Cursor cursor = (Cursor) list.getItemAtPosition(position);
        String id = cursor.getString(cursor. getColumnIndex(MediaStore.Audio.Media._ID));  
        finalSuccessfulUri = Uri.withAppendedPath(songUri, "" + id );
        Intent in = new Intent(getApplicationContext(),
                         MainActivity.class);                
                  in.putExtra("Uri", finalSuccessfulUri.toString());
                  in.putExtra("songID", id);  
                  setResult(100, in);    
                 finish();
        }
        });
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

6 years ago

Android

Im trying to create solution for classic 8 puzzle problem in java via breadth first search

Im trying to create solution for classic 8 puzzle problem in java via breadth first search
However my expand() is not working properly
Here is the code
You can also donwload same java file via attachments

class Node
{
Node children[]=null;
Node parent=null;
int puzzle[][]=null;
Node(int p[][],Node pa)
{
puzzle=p;
parent=pa;
}
public void print()
{
System.out.println("**********");
for (int i=0;i<puzzle.length;i++)
{
for (int j=0;j<puzzle.length;j++)
{
System.out.print(puzzle[i][j]);
}
System.out.println("");
}
System.out.println("**********");
}
public void printChildren()
{
for (int i=0;i<4;i++)
{
if(children[i]!=null)
{
(children[i]).print();
}
}
}
public void expand()
{
children=new Node[4];
children[0]=expandDown();
children[1]=expandUp();
children[2]=expandLeft();
children[3]=expandRight();
}
public Node expandDown()
{
Node n=new Node(puzzle.clone(),this);
int zeroXY[]=n.getZero();
if(zeroXY[1]-1>0 && zeroXY[1]-1<puzzle.length)
{
int temp=n.puzzle[zeroXY[0]][zeroXY[1]];
n.puzzle[zeroXY[0]][zeroXY[1]]=n.puzzle[zeroXY[0]][zeroXY[1]-1];
n.puzzle[zeroXY[0]][zeroXY[1]-1]=temp;
n.print();
return n;
}
else
{
return null;
}
}
public Node expandUp()
{
Node n=new Node(puzzle.clone(),this);
int zeroXY[]=n.getZero();
if(zeroXY[1]+1>0 && zeroXY[1]+1<puzzle.length)
{
int temp=n.puzzle[zeroXY[0]][zeroXY[1]];
n.puzzle[zeroXY[0]][zeroXY[1]]=n.puzzle[zeroXY[0]][zeroXY[1]+1];
n.puzzle[zeroXY[0]][zeroXY[1]+1]=temp;
n.print();
return n;
}
else
{
return null;
}
}
public Node expandRight()
{
Node n=new Node(puzzle.clone(),this);
int zeroXY[]=n.getZero();
if(zeroXY[0]+1>0 && zeroXY[0]+1<puzzle.length)
{
int temp=n.puzzle[zeroXY[0]][zeroXY[1]];
n.puzzle[zeroXY[0]][zeroXY[1]]=n.puzzle[zeroXY[0]+1][zeroXY[1]];
n.puzzle[zeroXY[0]+1][zeroXY[1]]=temp;
n.print();
return n;
}
else
{
return null;
}
}
public Node expandLeft()
{
Node n=new Node(puzzle.clone(),this);
int zeroXY []=n.getZero();
if(zeroXY[0]-1>0 && zeroXY[0]-1<puzzle.length)
{
int temp=n.puzzle[zeroXY[0]][zeroXY[1]];
n.puzzle[zeroXY[0]][zeroXY[1]]=n.puzzle[zeroXY[0]-1][zeroXY[1]];
n.puzzle[zeroXY[0]-1][zeroXY[1]]=temp;
n.print();
return n;
}
else
{
return null;
}
}
int[] getZero()
{
int[] n=new int[2];
for (int i=0;i<puzzle.length;i++)
{
for (int j=0;j<puzzle.length;j++)
{
if(puzzle[i][j]==0)
{
n[0]=i;
n[1]=j;
//System.out.println(n[0]+","+n[1]);
return n;
}
}
}
return null;
}
}
class Puzzle8
{
final static int GOAL [][]={{1,2,3},{4,5,6},{7,8,0}};
public static void main(String args[])
{
int board[][]={{1,2,3},{4,5,6},{7,8,0}};
Node Start=new Node(board,null);
Start.expand();
Start.printChildren();
}
}

6 years ago

Java in General