Android Taking Picture (Using Camera)

The camera is the most visible and most used sensor in an Android device. There are two ways to access the camera from an application
1)The first is by declaring an implicit intent


Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivity(intent);



2)The second way leverages the Camera class, which provides more flexibility in the settings.This creates a custom camera interface, which is the focus of the examples that follow. Camera hardware access requires explicit permission in the AndroidManifest XML file:

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

Customizing the Camera=>

please have a look on the following codes

res/layout/main.xml



<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">


    <SurfaceView android:id="@+id/surface"
        android:layout_width="fill_parent" android:layout_height="fill_parent">

    </SurfaceView>
</LinearLayout>

res/layout/cameraoverlay.xml


<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
   android:layout_width="fill_parent" android:layout_height="fill_parent"
   android:orientation="vertical">

<LinearLayout
   android:layout_width="fill_parent" android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="center_horizontal">
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="show data"
/>
</LinearLayout>
<LinearLayout
   android:layout_width="fill_parent" android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="center_horizontal">
<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="show temperature"
/>
</LinearLayout>
<LinearLayout
   android:layout_width="fill_parent" android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="center_horizontal">
<TextView
android:id="@+id/tv3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="show temperature"
/>
</LinearLayout>

</LinearLayout>
<LinearLayout
   android:layout_width="fill_parent" android:layout_height="fill_parent"
   android:orientation="vertical"
   android:gravity="bottom"
   android:layout_gravity="bottom">

<LinearLayout
   android:layout_width="fill_parent" android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="center_horizontal">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="take picture"
/>
</LinearLayout>
</LinearLayout>

</FrameLayout>

src/com/jiteshcamerademo/CameraApplication.java


package com.jiteshcamerademo;

import java.util.List;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.provider.MediaStore.Images;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class CameraApplication extends Activity implements SurfaceHolder.Callback{
    /** Called when the activity is first created. */
    private static final String TAG = "Jitesh hardware";
    private LayoutInflater mInflater = null;
    Camera mCamera;
    byte[] tempdata;
    boolean mPreviewRunning = false;
    private SurfaceHolder mSurfaceHolder;
    private SurfaceView mSurfaceView;
    Button takepicture;
    SensorManager sensorManager;
    TextView tv1,tv2,tv3;
    private final SensorEventListener mSensorEventListener = new SensorEventListener(){

public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}


public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
// Log.v("test","Event Azimuth:"+event.values[0]+" Pitch:"+event.values[1]+" Roll:"+event.values[2]);
// Log.v("test","onSensorChanged:"+event.sensor.getName());
if(event.sensor.getType()==Sensor.TYPE_ORIENTATION){
tv1.setText("Jitesh Data:"+Math.round(event.values[0])+" Pitch:"+Math.round(event.values[1])+" Roll:"+Math.round(event.values[2]));
}
}

    };
    private final SensorEventListener mTListener = new SensorEventListener(){

public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}


public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
// Log.v("test","Event Azimuth:"+event.values[0]+" Pitch:"+event.values[1]+" Roll:"+event.values[2]);
// Log.v("test Temperature","onSensorChanged:"+event.sensor.getName());
if(event.sensor.getType()==Sensor.TYPE_TEMPERATURE){
tv2.setText("Temperature:"+event.values[0]);
}
}

    };
   
    private final SensorEventListener mLListener = new SensorEventListener(){

public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}


public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
// Log.v("test","Event Azimuth:"+event.values[0]+" Pitch:"+event.values[1]+" Roll:"+event.values[2]);
// Log.v("test Light","onSensorChanged:"+event.sensor.getName());
if(event.sensor.getType()==Sensor.TYPE_LIGHT){
tv3.setText("Light:"+event.values[0]);
}
}

    };

   
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFormat(PixelFormat.TRANSLUCENT);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);

        mSurfaceView = (SurfaceView)findViewById(R.id.surface);
        mSurfaceHolder = mSurfaceView.getHolder();
        mSurfaceHolder.addCallback(this);      
        mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    //    this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
       
        mInflater = LayoutInflater.from(this);
        View overView = mInflater.inflate(R.layout.cameraoverlay, null);
        this.addContentView(overView,new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
        takepicture = (Button)findViewById(R.id.button);
        tv1 =(TextView) findViewById(R.id.tv1);
        tv2 =(TextView) findViewById(R.id.tv2);
        tv3 =(TextView) findViewById(R.id.tv3);
        takepicture.setOnClickListener(new OnClickListener(){
    public void onClick(View view){
       {
       
      mCamera.takePicture(mShutterCallback, mPictureCallback,mjpeg);
       }
    }
   
    });
      sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
      sensorManager.registerListener(mSensorEventListener, sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),SensorManager.SENSOR_DELAY_FASTEST);
      sensorManager.registerListener(mTListener, sensorManager.getDefaultSensor(Sensor.TYPE_TEMPERATURE),SensorManager.SENSOR_DELAY_FASTEST);
      //sensorManager.registerListener(mLListener, sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT),SensorManager.SENSOR_DELAY_FASTEST);
         
      List<Sensor> sensors= sensorManager.getSensorList(Sensor.TYPE_ALL);
      for(int i =0;i<sensors.size();i++){
     Log.v("LST",i+"] type:"+sensors.get(i).getName()+" type code:"+sensors.get(i).getType());
      }
 
    }

    PhoneStateListener mphoneListner = new PhoneStateListener(){
   
    };
   
   
   
    Camera.ShutterCallback mShutterCallback = new Camera.ShutterCallback(){


public void onShutter() {
// TODO Auto-generated method stub

}
   
    };
    Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
        public void onPictureTaken(byte[] data, Camera c) {
        if(data !=null)
        {

        }
        }
    };

    Camera.PictureCallback mjpeg = new Camera.PictureCallback() {
        public void onPictureTaken(byte[] data, Camera c) {
        if(data !=null)
        {
        tempdata=data;
        done();
           

        }
        }
    };

    void done()
    {
      Bitmap bm = BitmapFactory.decodeByteArray(tempdata,0,tempdata.length);
         String url = Images.Media.insertImage(getContentResolver(),
          bm, null, null);                                
         bm.recycle();
         Bundle bundle = new Bundle();
         if(url!=null)
         {
        bundle.putString("url", url);
       
        Intent mIntent = new Intent();
        mIntent.putExtras(bundle);
        setResult(RESULT_OK, mIntent);
         }
         else
         {
        Toast.makeText(this, "Picture can not be saved", Toast.LENGTH_SHORT).show();
         }
         finish();
    }


public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// TODO Auto-generated method stub
        Log.e(TAG, "surfaceChanged");
try
{
       // XXX stopPreview() will crash if preview is not running
       if (mPreviewRunning) {
           mCamera.stopPreview();
       }

       Camera.Parameters p = mCamera.getParameters();
       p.setPreviewSize(w, h);
/*
       p.set("rotation", 90);
     
       p.setPictureSize(480,640);
*/      
       mCamera.setParameters(p);
       mCamera.setPreviewDisplay(holder);
       mCamera.startPreview();
       mPreviewRunning = true;
}
catch(Exception e)
{
Log.d(TAG,e.toString());
}
}

public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
        Log.e(TAG, "surfaceCreated");
        mCamera = Camera.open();
}

public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
        Log.e(TAG, "surfaceDestroyed");
        mCamera.stopPreview();
        mPreviewRunning = false;
        mCamera.release();
        mCamera=null;
}

}