Image blur issue

// http://www.androiddevelopersolution.com/2013/12/android-make-image-sharper-android.html
Image Before:

Image After :

 1. ImageHelper.java : This is our helper class which helps in processing image
     sharper/

package com.exampl.imagerun;

import android.graphics.Bitmap;
import android.graphics.Color;
 
public class ImageHelper
{
    public static final int SIZE = 3;
 
    public double[][] Matrix;
    public double Factor = 1;
    public double Offset = 1;
 
   //Constructor with argument of size
    public ImageHelper(int size) {
        Matrix = new double[size][size];
    }
 
    public void setAll(double value) {
        for (int x = 0; x < SIZE; ++x) {
            for (int y = 0; y < SIZE; ++y) {
                Matrix[x][y] = value;
            }
        }
    }
 
    public void applyConfig(double[][] config) {
        for(int x = 0; x < SIZE; ++x) {
            for(int y = 0; y < SIZE; ++y) {
                Matrix[x][y] = config[x][y];
            }
        }
    }
 
    public static Bitmap computeConvolution3x3(Bitmap src, ImageHelper matrix) {
        int width = src.getWidth();
        int height = src.getHeight();
        Bitmap result = Bitmap.createBitmap(width, height, src.getConfig());
 
        int A, R, G, B;
        int sumR, sumG, sumB;
        int[][] pixels = new int[SIZE][SIZE];
 
        for(int y = 0; y < height - 2; ++y) {
            for(int x = 0; x < width - 2; ++x) {
 
                // get pixel matrix
                for(int i = 0; i < SIZE; ++i) {
                    for(int j = 0; j < SIZE; ++j) {
                        pixels[i][j] = src.getPixel(x + i, y + j);
                    }
                }
 
                // get alpha of center pixel
                A = Color.alpha(pixels[1][1]);
 
                // init color sum
                sumR = sumG = sumB = 0;
 
                // get sum of RGB on matrix
                for(int i = 0; i < SIZE; ++i) {
                    for(int j = 0; j < SIZE; ++j) {
                        sumR += (Color.red(pixels[i][j]) * matrix.Matrix[i][j]);
                        sumG += (Color.green(pixels[i][j]) * matrix.Matrix[i][j]);
                        sumB += (Color.blue(pixels[i][j]) * matrix.Matrix[i][j]);
                    }
                }
 
                // get final Red
                R = (int)(sumR / matrix.Factor + matrix.Offset);
                if(R < 0) { R = 0; }
                else if(R > 255) { R = 255; }
 
                // get final Green
                G = (int)(sumG / matrix.Factor + matrix.Offset);
                if(G < 0) { G = 0; }
                else if(G > 255) { G = 255; }
 
                // get final Blue
                B = (int)(sumB / matrix.Factor + matrix.Offset);
                if(B < 0) { B = 0; }
                else if(B > 255) { B = 255; }
 
                // apply new pixel
                result.setPixel(x + 1, y + 1, Color.argb(A, R, G, B));
            }
        }
 
        // final image
        return result;
    }
}

 Now, In our Activity class we need to add following code:

   
    ImageView imageView=(ImageView)findViewById(R.id.image);



Now set image on image view

   
    image.setImageBitmap(sharpenImage(BitmapFactory.
           decodeResource(getResources(),images[i]),12));



And, here we are using Convolution Matrix Theorem to make image sharper.

       public Bitmap sharpenImage(Bitmap src, double weight) {
    // set sharpness configuration
    double[][] SharpConfig = new double[][] { { 0, -2, 0 },
    { -2, weight, -2 }, { 0, -2, 0 } };
    // create convolution matrix instance
    ImageHelper convMatrix = new ImageHelper(3);
    // apply configuration
    convMatrix.applyConfig(SharpConfig);
    // set weight according to factor
    convMatrix.Factor = weight - 8;
    return ImageHelper.computeConvolution3x3(src, convMatrix);
 }




Load Image from URL

http://www.androidhive.info/2012/07/android-loading-image-from-url-http/

Custom Toast

1) in Activity.java
==============
final View toastView = getLayoutInflater().inflate(
R.layout.custom_toast,(ViewGroup) findViewById(R.id.toastLayout));
ImageView imageView = (ImageView) toastView
.findViewById(R.id.image);
imageView.setImageResource(R.drawable.ic_info);

// imageView.setBackgroundDrawable(bitmapDrawable);
TextView textView = (TextView) toastView.findViewById(R.id.text);
textView.setText("Take a Clear photo of the Ticket");
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
toast = new Toast(HomeActivity.this);
toast.setGravity(Gravity.TOP, 0, 100);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(toastView);
toast.show();
}
}, 2000);

2) custom_toast.xml
==============
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/toastLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@layout/roundborder"
    android:orientation="horizontal"
    android:padding="10dp" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_marginRight="1dp" />

    <TextView
        android:id="@+id/text"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center"
        android:layout_marginRight="4dp"
        android:gravity="center"
        android:paddingLeft="5dip"
        android:text="Take a clear photo of the Ticket"
        android:textColor="#FFF"
        android:textSize="16dip" />

</LinearLayout>

RSS Feed Reader

1)MainActivity.java
==============
package com.example.rssfeed;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import nl.matshofman.saxrssreader.RssFeed;
import nl.matshofman.saxrssreader.RssItem;
import nl.matshofman.saxrssreader.RssReader;
import org.xml.sax.SAXException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.widget.TextView;

public class MainActivity extends Activity {
private TextView txtTitle;

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

txtTitle = (TextView)findViewById(R.id.txtTitle);

if (android.os.Build.VERSION.SDK_INT > 9) {
   StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
   StrictMode.setThreadPolicy(policy);
}

URL url = null;
try {
url = new URL("http://www.vogella.com/article.rss");
} catch (MalformedURLException e) {
e.printStackTrace();
}
RssFeed feed = null;
try {
feed = RssReader.read(url);
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

ArrayList<RssItem> rssItems = feed.getRssItems();
for(RssItem rssItem : rssItems) {
   Log.i("RSS Reader", rssItem.getTitle());
   txtTitle.setText(rssItem.getTitle());
}
}
}

2)Download library from

https://github.com/matshofman/Android-RSS-Reader-Library

3)Manifest Permissions

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

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

ShowMultipleFileDownloadProgression

1) Create class CustomListViewAdapter.java
==============================
package com.example.showdownloadprogression;

import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class CustomListViewAdapter extends BaseAdapter {

   Context context;
   List<RowItem> rowItems;

   public CustomListViewAdapter(Context context, List<RowItem> items) {
       this.context = context;
       this.rowItems = items;
   }

   private class ViewHolder {
       ImageView imageView;
   }

   public int getCount() {
       return rowItems.size();
   }

   public Object getItem(int position) {
       return rowItems.get(position);
   }

   public long getItemId(int position) {
       return 0;
   }

   public View getView(int position, View convertView, ViewGroup parent) {
       ViewHolder holder = null;
       LayoutInflater mInflater = (LayoutInflater) context
               .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
       if (convertView == null) {
           convertView = mInflater.inflate(R.layout.list_item, null);
           holder = new ViewHolder();
           holder.imageView = (ImageView) convertView
                   .findViewById(R.id.thumbnail);
           convertView.setTag(holder);
       } else {
           holder = (ViewHolder) convertView.getTag();
       }
       RowItem rowItem = (RowItem) getItem(position);
       holder.imageView.setImageBitmap(rowItem.getBitmapImage());
       return convertView;
   }
}

2) Create class FileUtils.java
====================
package com.example.showdownloadprogression;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class FileUtils {

    public static void close(InputStream stream) {
        if(stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static void close(OutputStream stream) {
        if(stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

3) Create class MainActivity.java

=======================

package com.example.showdownloadprogression;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.util.ArrayList;

import java.util.List;

import android.app.Activity;

import android.app.ProgressDialog;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.AsyncTask;

import android.os.Bundle;

import android.widget.ListView;

public class MainActivity extends Activity {

    ProgressDialog progressDialog;

    CustomListViewAdapter listViewAdapter;

    ListView listView;

    public static final String URL =

        "http://theopentutorials.com/totwp331/wp-content/uploads/totlogo.png";

    public static final String URL1 =

        "http://theopentutorials.com/totwp331/wp-content/uploads/totlogo.png";

    public static final String URL2 =

        "http://theopentutorials.com/totwp331/wp-content/uploads/totlogo.png";

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            listView = (ListView) findViewById(R.id.imageList);

        /*Creating and executing background task*/

        GetXMLTask task = new GetXMLTask(this);

        task.execute(new String[] { URL, URL1, URL2 });

        progressDialog = new ProgressDialog(this);

        progressDialog.setTitle("In progress...");

        progressDialog.setMessage("Loading...");

        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

        progressDialog.setIndeterminate(false);

        progressDialog.setMax(100);

        progressDialog.setIcon(R.drawable.arrow);

        progressDialog.setCancelable(true);

        progressDialog.show();

    }

// 

//    @Override

//    public boolean onCreateOptionsMenu(Menu menu) {

//        // Inflate the menu; this adds items to the action bar if it is present.

//        getMenuInflater().inflate(R.menu.activity_main, menu);

//        return true;

//    }

    private class GetXMLTask extends AsyncTask<String, Integer, List<RowItem>> {

        private Activity context;

        List<RowItem> rowItems;

        int noOfURLs;

        public GetXMLTask(Activity context) {

            this.context = context;

        }

        @Override

        protected List<RowItem> doInBackground(String... urls) {

            noOfURLs = urls.length;

            rowItems = new ArrayList<RowItem>();

            Bitmap map = null;

            for (String url : urls) {

                map = downloadImage(url);

                rowItems.add(new RowItem(map));

            }

            return rowItems;

        }

        private Bitmap downloadImage(String urlString) {

            int count = 0;

            Bitmap bitmap = null;

            URL url;

            InputStream inputStream = null;

            BufferedOutputStream outputStream = null;

            try {

                url = new URL(urlString);

                URLConnection connection = url.openConnection();

                int lenghtOfFile = connection.getContentLength();

                inputStream = new BufferedInputStream(url.openStream());

                ByteArrayOutputStream dataStream = new ByteArrayOutputStream();

                outputStream = new BufferedOutputStream(dataStream);

                byte data[] = new byte[512];

                long total = 0;

                while ((count = inputStream.read(data)) != -1) {

                    total += count;

                    /*publishing progress update on UI thread.

                    Invokes onProgressUpdate()*/

                    publishProgress((int)((total*100)/lenghtOfFile));

                    // writing data to byte array stream

                    outputStream.write(data, 0, count);

                }

                outputStream.flush();

                BitmapFactory.Options bmOptions = new BitmapFactory.Options();

                bmOptions.inSampleSize = 1;

                byte[] bytes = dataStream.toByteArray();

                bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length,bmOptions);

            } catch (MalformedURLException e) {

                e.printStackTrace();

            } catch (IOException e) {

                e.printStackTrace();

            } finally {

                FileUtils.close(inputStream);

                FileUtils.close(outputStream);

            }

            return bitmap;

        }

        protected void onProgressUpdate(Integer... progress) {

            progressDialog.setProgress(progress[0]);

            if(rowItems != null) {

                progressDialog.setMessage("Loading " + (rowItems.size()+1) + "/" + noOfURLs);

            }

       }

       @Override

       protected void onPostExecute(List<RowItem> rowItems) {

        listViewAdapter = new CustomListViewAdapter(context, rowItems);

        listView.setAdapter(listViewAdapter);

        progressDialog.dismiss();

       }    

    }

}

4) Create class RowItem.java

====================

package com.example.showdownloadprogression;

import android.graphics.Bitmap;

public class RowItem {

 

    private Bitmap bitmapImage;

    public RowItem(Bitmap bitmapImage) {

        this.bitmapImage =  bitmapImage;

    }

    public Bitmap getBitmapImage() {

        return bitmapImage;

    }

    public void setBitmapImage(Bitmap bitmapImage) {

        this.bitmapImage = bitmapImage;

    }

}

5)activity_main.xml

=============

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >

    <ListView

        android:id="@+id/imageList"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

</RelativeLayout>

6) list_item.xml

============

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

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

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical"

    android:padding="10dp" >

    <ImageView

        android:id="@+id/thumbnail"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />

</LinearLayout>

7) in values-v11 style.xml

=================

<resources>

    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">

        <!-- API 11 theme customizations can go here. -->

    </style>

</resources>

8) in values-v14 style.xml

==================

<resources>

  <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">

        <!-- API 14 theme customizations can go here. -->

    </style>

</resources>

9) Don't forget to give permission of "Internet" & "Access_Network_State"

Shake Animation Edittext

1. Activity Class:

package com.mukesh.shakeanimation;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Toast;

public class MainActivity extends Activity implements View.OnClickListener {

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

  View loginButton = findViewById(R.id.login);
  loginButton.setOnClickListener(this);
 }

 public void onClick(View v) {
  Animation shake = AnimationUtils.loadAnimation(this, R.anim.shake);
     findViewById(R.id.pw).startAnimation(shake);
     Toast.makeText(this, "Wrong Password", Toast.LENGTH_SHORT).show();
 }

}

2) activity_main.xml 

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="@drawable/blue_gradient"

    android:orientation="vertical"

    android:padding="10dip" >



    <TextView

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginBottom="10dip"

        android:text="Please enter your password:"

        android:textColor="@android:color/white"

        android:textStyle="bold" />



    <EditText

        android:id="@+id/pw"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:clickable="true"

        android:password="true"

        android:singleLine="true" />



    <Button

        android:id="@+id/login"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:background="@drawable/btn_active_pressed"

        android:padding="5dp"

        android:text="Login"

        android:textColor="@android:color/white"

        android:textStyle="bold" />



</LinearLayout>

3. res/anim/shake.xml 

<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromXDelta="0"
    android:interpolator="@anim/cycle_7"
    android:toXDelta="10" />

4. res/anim/cycle_7.xml 

<cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
    android:cycles="7" />

Paging in android

Pagination of screen in Android.

There are different Pagination is available in android. you can used as per your requirements.

CIrcle Flow indicator.

 

Title Flow indicator.

Different view Flow.

AsyncDataLoading.

Download code here