Thursday, June 14, 2012

Contact List :- GetContact List from default contact database in Android

public ArrayList<String> getPhoneNumber(Activity mActivity)
{
        ArrayList<String> numbers=null;
        numbers= new ArrayList<String>();
        Cursor c =  mActivity.managedQuery(ContactsContract.Contacts.CONTENT_URI,  null, null, null, null);
        for(int i=0;i<c.getcount();i++)
        {
            c.moveToPosition(i);
            String id = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
            String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
            if (hasPhone.equalsIgnoreCase("1"))
            {
                Cursor phones = mActivity.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                                                            null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ id,null, null);
                if(phones.getCount()>0)
                {
                     phones.moveToFirst();
                     String cNumber = phones.getString(phones.getColumnIndex("data1"));
                     numbers.add(cNumber);
                }
            }
        }
        return numbers;
    }


Note:
Add Permission in Menifest.xml
<'uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>

Search Address :- Get Geopoint from location name.

public static GeoPoint searchAddress(Context mContext,String mAddress)
    {
        GeoPoint mGeoPoint=null;
        Geocoder coder = new Geocoder(mContext);
        List<Address> address;
        try
        {
            address = coder.getFromLocationName(mAddress,5);
            if(address==null)
            {
                return null;
            }
            for(int i=0;i<1;i++)
            {
                Address location = address.get(i);
                mGeoPoint=new GeoPoint((int)(location.getLatitude()*1E6), (int)(location.getLongitude()*1E6));
            }
        }
        catch(Exception e)
        {
            return null;
        }
        return mGeoPoint;
    }


Note:
Add Permission in Menifest.xml
<'uses-permission android:name="android.permission.INTERNET"/>

Custom Camera Application

Preview.class
package com.example;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.hardware.Camera;
import android.hardware.Camera.PreviewCallback;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;


class Preview extends SurfaceView implements SurfaceHolder.Callback {
    private static final String TAG = "Preview";

    SurfaceHolder mHolder;
    public Camera camera;
   
    Preview(Context context) {
        super(context);
       
        // Install a SurfaceHolder.Callback so we get notified when the
        // underlying surface is created and destroyed.
        mHolder = getHolder();
        mHolder.addCallback(this);
        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    public void surfaceCreated(SurfaceHolder holder) {
        // The Surface has been created, acquire the camera and tell it where
        // to draw.
        camera = Camera.open();
        try {
            camera.setPreviewDisplay(holder);
           
           
            camera.setPreviewCallback(new PreviewCallback() {

                public void onPreviewFrame(byte[] data, Camera arg1) {
                    FileOutputStream outStream = null;
                    try {
                        outStream = new FileOutputStream(String.format("/sdcard/%d.jpg", System.currentTimeMillis()));   
                        outStream.write(data);
                        outStream.close();
                        Log.d(TAG, "onPreviewFrame - wrote bytes: " + data.length);
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    } finally {
                    }
                        Preview.this.invalidate();
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        // Surface will be destroyed when we return, so stop the preview.
        // Because the CameraDevice object is not a shared resource, it's very
        // important to release it when the activity is paused.
        camera.stopPreview();
        camera = null;
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        // Now that the size is known, set up the camera parameters and begin
        // the preview.
        Camera.Parameters parameters = camera.getParameters();
//        parameters.setPreviewSize(w, h);
        camera.setParameters(parameters);
        camera.startPreview();
    }

    @Override
    public void draw(Canvas canvas) {
            super.draw(canvas);
            Paint p= new Paint(Color.RED);
            Log.d(TAG,"draw");
            canvas.drawText("PREVIEW", canvas.getWidth()/2, canvas.getHeight()/2, p );
    }
}


CameraDemo.class

package com.example;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.FrameLayout;

public class CameraDemo extends Activity {
    private static final String TAG = "CameraDemo";
    Camera camera;
    Preview preview;
    Button buttonClick;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        preview = new Preview(this);
        ((FrameLayout) findViewById(R.id.preview)).addView(preview);

        buttonClick = (Button) findViewById(R.id.buttonClick);
        buttonClick.setOnClickListener( new OnClickListener() {
            public void onClick(View v) {
                preview.camera.takePicture(shutterCallback, rawCallback, jpegCallback);
            }
        });

        Log.d(TAG, "onCreate'd");
    }


    ShutterCallback shutterCallback = new ShutterCallback() {
        public void onShutter() {
            Log.d(TAG, "onShutter'd");
        }
    };

    /** Handles data for raw picture */
    PictureCallback rawCallback = new PictureCallback() {
        public void onPictureTaken(byte[] data, Camera camera) {
            Log.d(TAG, "onPictureTaken - raw");
        }
    };

    /** Handles data for jpeg picture */
    PictureCallback jpegCallback = new PictureCallback() {
        public void onPictureTaken(byte[] data, Camera camera) {
            FileOutputStream outStream = null;
            long time = 0;
            try {
                // write to local sandbox file system
//                outStream = CameraDemo.this.openFileOutput(String.format("%d.jpg", System.currentTimeMillis()), 0);   
                // Or write to sdcard
                time =  System.currentTimeMillis();
                outStream = new FileOutputStream(String.format("/sdcard/%d.jpg",time));   
                outStream.write(data);
                outStream.close();
                Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
               
               

            }
            Log.d(TAG, "onPictureTaken - jpeg");
        }
    };

}

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:id="@+id/layout">
 <TextView android:layout_width="fill_parent"
  android:layout_height="wrap_content" android:text="Camera Demo"
  android:textSize="24sp" />

 <FrameLayout android:id="@+id/preview"
  android:layout_weight="1" android:layout_width="fill_parent"
  android:layout_height="fill_parent">
 </FrameLayout>

 <Button android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:id="@+id/buttonClick"
  android:text="Click" android:layout_gravity="center"></Button>

</LinearLayout>
And finally remember to add android:name="android.permission.CAMERA" to your AndroidManifest.xml file.