Copy bitmap

Hi Guys!
Today I ma sharing the code how to copy the same bitmap image to new bitmap image.
Example of copy bitmap using Bitmap.getPixels() and Bitmap.setPixels().

activity_main.xml

MainAcitivity.java

package com.sunil.copybitmap;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.os.Bundle;
import android.widget.ImageView;
  
public class MainActivity extends Activity {
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       ImageView image1 = (ImageView)findViewById(R.id.image1);
       ImageView image2 = (ImageView)findViewById(R.id.image2);
        
       Bitmap oldBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
        
       int orgWidth = oldBitmap.getWidth();
       int orgHeight = oldBitmap.getHeight();
         
       Bitmap newBitmap = Bitmap.createBitmap(orgWidth, orgHeight, Bitmap.Config.ARGB_8888);
       int[] pixels = new int[orgWidth * orgHeight];
       oldBitmap.getPixels(pixels, 0, orgWidth, 0, 0, orgWidth, orgHeight);
       newBitmap.setPixels(pixels, 0, orgWidth, 0, 0, orgWidth, orgHeight);
         
       image1.setImageBitmap(oldBitmap);
       image2.setImageBitmap(newBitmap);
   }
}

 You can download the source code Copy Bitmap

Cheers Guys!

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Dynamic change the content of Spinner

We can change the List programmatically, to change the content of the Spinner, then call notifyDataSetChanged() of the ArrayAdapter to update the Spinner.

It's a example modify from the last post. There are two Spinner. When the Move button clicked, the current item of Spinner1 will be moved to Spinner2.

package com.AndroidListSpinner;
import java.util.ArrayList;
import java.util.List;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
 
public class AndroidListSpinnerActivity extends Activity {
  
 Button btnMove;
 Spinner MySpinner1, MySpinner2;
 List myList1, myList2;
 private ArrayAdapter myAdapter1, myAdapter2;
  
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btnMove = (Button)findViewById(R.id.move);
        MySpinner1 = (Spinner)findViewById(R.id.myspinner1);
        MySpinner2 = (Spinner)findViewById(R.id.myspinner2);
         
        initList();
        myAdapter1 = new ArrayAdapter(this, android.R.layout.simple_spinner_item, myList1);
        myAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        MySpinner1.setAdapter(myAdapter1);
         
        myAdapter2 = new ArrayAdapter(this, android.R.layout.simple_spinner_item, myList2);
        myAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        MySpinner2.setAdapter(myAdapter2);
 
        btnMove.setOnClickListener(MoveOnClickListener);
    }
     
    Button.OnClickListener MoveOnClickListener
    = new Button.OnClickListener(){
 
  @Override
  public void onClick(View arg0) {
   // TODO Auto-generated method stub
   int pos = MySpinner1.getSelectedItemPosition();
    
   if(pos != AdapterView.INVALID_POSITION){
    myList2.add(myList1.get(pos));
    myList1.remove(pos);
    myAdapter1.notifyDataSetChanged();
    myAdapter2.notifyDataSetChanged();
   }
  }};
     
    void initList(){
     myList1 = new ArrayList();
     myList1.add("Sunday");
     myList1.add("Monday");
     myList1.add("Tuesday");
     myList1.add("Wednesday");
     myList1.add("Thursday");
     myList1.add("Friday");
     myList1.add("Saturday");
      
     myList2 = new ArrayList();
    }
}

Xml Code

You can download the source code Spinner Dynamic Move Content
Cheers Guys!!!!!!!

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Download using DownloadManager

The class android.app.DownloadManager (Since: API Level 9) is a system service that handles long-running HTTP downloads. Clients may request that a URI be downloaded to a particular destination file. The download manager will conduct the download in the background, taking care of HTTP interactions and retrying downloads after failures or across connectivity changes and system reboots.

It's a basic code to download file from internet using DownloadManager.

package com.AndroidDownload;
 
import java.io.FileInputStream;
import java.io.FileNotFoundException;
 
import android.app.Activity;
import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class AndroidDownloadActivity extends Activity {
  
 String Download_path = "http://goo.gl/Mfyya";
 String Download_ID = "DOWNLOAD_ID";
  
 SharedPreferences preferenceManager;
 DownloadManager downloadManager;
  
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       
       preferenceManager = PreferenceManager.getDefaultSharedPreferences(this);
       downloadManager = (DownloadManager)getSystemService(DOWNLOAD_SERVICE);
       
       Button btnDownload = (Button)findViewById(R.id.download);
       btnDownload.setOnClickListener(new Button.OnClickListener(){
 
   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    Uri Download_Uri = Uri.parse(Download_path);
    DownloadManager.Request request = new DownloadManager.Request(Download_Uri);
    long download_id = downloadManager.enqueue(request);
     
    //Save the download id
    Editor PrefEdit = preferenceManager.edit();
    PrefEdit.putLong(Download_ID, download_id);
    PrefEdit.commit();
   }});
   }
   
 @Override
 protected void onResume() {
  // TODO Auto-generated method stub
  super.onResume();
   
  IntentFilter intentFilter = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
  registerReceiver(downloadReceiver, intentFilter);
 }
 
 @Override
 protected void onPause() {
  // TODO Auto-generated method stub
  super.onPause();
   
  unregisterReceiver(downloadReceiver);
 }
 
 private BroadcastReceiver downloadReceiver = new BroadcastReceiver() {
 
  @Override
  public void onReceive(Context arg0, Intent arg1) {
   // TODO Auto-generated method stub
   DownloadManager.Query query = new DownloadManager.Query();
   query.setFilterById(preferenceManager.getLong(Download_ID, 0));
   Cursor cursor = downloadManager.query(query);
    
   if(cursor.moveToFirst()){
    int columnIndex = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS);
    int status = cursor.getInt(columnIndex);
    int columnReason = cursor.getColumnIndex(DownloadManager.COLUMN_REASON);
    int reason = cursor.getInt(columnReason);
     
    if(status == DownloadManager.STATUS_SUCCESSFUL){
     //Retrieve the saved download id
     long downloadID = preferenceManager.getLong(Download_ID, 0);
      
     ParcelFileDescriptor file;
     try {
      file = downloadManager.openDownloadedFile(downloadID);
      Toast.makeText(AndroidDownloadActivity.this,
        "File Downloaded: " + file.toString(),
        Toast.LENGTH_LONG).show();
     } catch (FileNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
      Toast.makeText(AndroidDownloadActivity.this,
        e.toString(),
        Toast.LENGTH_LONG).show();
     }
      
    }else if(status == DownloadManager.STATUS_FAILED){
     Toast.makeText(AndroidDownloadActivity.this,
       "FAILED!\n" + "reason of " + reason,
       Toast.LENGTH_LONG).show();
    }else if(status == DownloadManager.STATUS_PAUSED){
     Toast.makeText(AndroidDownloadActivity.this,
       "PAUSED!\n" + "reason of " + reason,
       Toast.LENGTH_LONG).show();
    }else if(status == DownloadManager.STATUS_PENDING){
     Toast.makeText(AndroidDownloadActivity.this,
       "PENDING!",
       Toast.LENGTH_LONG).show();
    }else if(status == DownloadManager.STATUS_RUNNING){
     Toast.makeText(AndroidDownloadActivity.this,
       "RUNNING!",
       Toast.LENGTH_LONG).show();
    }
   }
  }
   
 };
 
}

Xml code:

"android.permission.INTERNET" is needed in AndroidManifest.xml. 

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Start activity using intent of ACTION_VIEW, for specified MIME type.

According to the detected MIME Type, we can start another activity with intent of ACTION_VIEW to view the file.

Java Code:

package com.AndroidListFiles;
 
import java.io.File;
import java.util.ArrayList;
import java.util.List;
 
import android.app.ListActivity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.webkit.MimeTypeMap;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
 
public class AndroidListFilesActivity extends ListActivity {
  
 private List fileList = new ArrayList();
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
         
        File root = new File(Environment
          .getExternalStorageDirectory()
          .getAbsolutePath());
        ListDir(root);
 
    }
     
    @Override
 protected void onListItemClick(ListView l, View v, int position, long id) {
  // TODO Auto-generated method stub
     File selected = new File(fileList.get(position));
     if(selected.isDirectory()){
      ListDir(selected);
     }else {
      Uri selectedUri = Uri.fromFile(selected);
      String fileExtension
       = MimeTypeMap.getFileExtensionFromUrl(selectedUri.toString());
      String mimeType
       = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
       
      Toast.makeText(AndroidListFilesActivity.this,
        "FileExtension: " + fileExtension + "\n" +
        "MimeType: " + mimeType,
        Toast.LENGTH_LONG).show();
       
      //Start Activity to view the selected file
      Intent intent;
      intent = new Intent(Intent.ACTION_VIEW);
      intent.setDataAndType(selectedUri, mimeType);
      startActivity(intent);
 
     }
 }
 
 void ListDir(File f){
     File[] files = f.listFiles();
     fileList.clear();
     for (File file : files){
      fileList.add(file.getPath()); 
     }
      
     ArrayAdapter directoryList
     = new ArrayAdapter(this,
       android.R.layout.simple_list_item_1, fileList);
     setListAdapter(directoryList);
    }
 
}

Cheers Guys!!!!!!!!!!1

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Generate 3D Pie Chart using Google Chart Tools

By using Google Chart Tools, we can generate 3D pie chart easily.

Java Code:

package com.Android3dPieChart;
 
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
 
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
 
public class Android3dPieChartActivity extends Activity {
  
 final static String urlGoogleChart
  = "http://chart.apis.google.com/chart";
 final static String urlp3Api
  = "?cht=p3&chs=400x150&chl=A|B|C&chd=t:";
  
 EditText inputA, inputB, inputC;
 Button generate;
 ImageView pieChart;
  
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        inputA = (EditText)findViewById(R.id.adata);
        inputB = (EditText)findViewById(R.id.bdata);
        inputC = (EditText)findViewById(R.id.cdata);
        generate = (Button)findViewById(R.id.generate);
        pieChart = (ImageView)findViewById(R.id.pie);
        generate.setOnClickListener(generateOnClickListener);
    }
     
    Button.OnClickListener generateOnClickListener
    = new Button.OnClickListener(){
 
  @Override
  public void onClick(View arg0) {
   // TODO Auto-generated method stub
   String A = inputA.getText().toString();
   String B = inputB.getText().toString();
   String C = inputC.getText().toString();
   String urlRqs3DPie = urlGoogleChart
     + urlp3Api
     + A + "," + B + "," + C;
    
   Bitmap bm3DPie = loadChart(urlRqs3DPie);
   if(bm3DPie == null){
    Toast.makeText(Android3dPieChartActivity.this,
      "Problem in loading 3D Pie Chart",
      Toast.LENGTH_LONG).show();
   }else{
    pieChart.setImageBitmap(bm3DPie);
   }
  }};
   
 private Bitmap loadChart(String urlRqs){
  Bitmap bm = null;
  InputStream inputStream = null;
   
  try {
   inputStream = OpenHttpConnection(urlRqs);
   bm = BitmapFactory.decodeStream(inputStream);
   inputStream.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
   
  return bm;
 }
      
 private InputStream OpenHttpConnection(String strURL) throws IOException{
  InputStream is = null;
  URL url = new URL(strURL);
  URLConnection urlConnection = url.openConnection();
        
  try{
   HttpURLConnection httpConn = (HttpURLConnection)urlConnection;
   httpConn.setRequestMethod("GET");
   httpConn.connect();
    
   if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
    is = httpConn.getInputStream(); 
   }
  }catch (Exception ex){
  }
   
  return is; 
 }
}

Xml Code:

Permission: "android.permission.INTERNET" is needed.

Result:

Cheers Guys!!!!!!!!!!!!!!!!!!!

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Generate QR Code using Google Chart Tools APIs

Google Chart Tools provide a perfect way to visualize data on your website. From simple line charts to complex hierarchical tree maps, the chart galley provides a large number of well-designed chart types. Populating your data is easy using the provided client- and server-side tools.

It's a example of Android app to generate QR Code using Google Chart Tools APIs.

Java Code:

package com.AndroidQRCode;
 
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
 
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
 
public class AndroidQRCodeActivity extends Activity {
  
 final static String urlGoogleChart = "http://chart.apis.google.com/chart";
 final static String urlQRApi = "?chs=200x200&cht=qr&chl=";
 final static String urlMySite = "http://sunil-android.blogspot.in/";
  
 ImageView QRCode;
 TextView MySite;
  
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       QRCode = (ImageView)findViewById(R.id.qrimage);
       MySite = (TextView)findViewById(R.id.mysite);
       MySite.setText(urlMySite);
       
       Bitmap bm = loadQRCode();
       if(bm == null){
        Toast.makeText(AndroidQRCodeActivity.this,
          "Problem in loading QR Code1",
          Toast.LENGTH_LONG).show();
       }else{
        QRCode.setImageBitmap(bm);
       }
       
   }
   
   private Bitmap loadQRCode(){
    Bitmap bmQR = null;
    InputStream inputStream = null;
     
    try {
   inputStream = OpenHttpConnection(urlGoogleChart + urlQRApi + urlMySite);
   bmQR = BitmapFactory.decodeStream(inputStream);
   inputStream.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
    return bmQR;
   }
   
   private InputStream OpenHttpConnection(String strURL) throws IOException{
    InputStream is = null;
    URL url = new URL(strURL);
    URLConnection urlConnection = url.openConnection();
     
    try{
     HttpURLConnection httpConn = (HttpURLConnection)urlConnection;
     httpConn.setRequestMethod("GET");
     httpConn.connect();
      
     if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
      is = httpConn.getInputStream();
     }
     }catch (Exception ex){
     }
     
    return is;
   }
   
}

xml code:

Permission: "android.permission.INTERNET" is needed.
The Result:

Cheers Guys!!!!!!!!!!!!!!!!
I love your thought here.............

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Simple GridView example

xml code:

Java code:

package com.AndroidGridView;
 
 
 
import android.app.Activity;
 
import android.os.Bundle;
 
import android.widget.ArrayAdapter;
 
import android.widget.GridView;
 
 
 
public class AndroidGridViewActivity extends Activity {
 
     
 
    GridView gridView;
 
     
 
    String[] listContent = {
 
          "January",
 
          "February",
 
          "March",
 
          "April",
 
          "May",
 
          "June",
 
          "July",
 
          "August",
 
          "September",
 
          "October",
 
          "November",
 
          "December"
 
  };
 
     
 
  /** Called when the activity is first created. */
 
  @Override
 
  public void onCreate(Bundle savedInstanceState) {
 
      super.onCreate(savedInstanceState);
 
      setContentView(R.layout.main);
 
      gridView = (GridView)findViewById(R.id.grid);
 
 
 
      ArrayAdapter adapter
 
      = new ArrayAdapter(this,
 
            android.R.layout.simple_list_item_1,
 
            listContent);
 
     
 
      gridView.setAdapter(adapter);
 
  }
}

Result:Cheers Guys!!!!!!!!!!!!

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