Create your own camera app and take images android

1. Create a SurfaceView as follow (it will interact with camera)

   
   import java.io.FileNotFoundException;
   import java.io.FileOutputStream;
   import java.io.IOException;
   import android.content.Context;
   import android.hardware.Camera;
   import android.hardware.Camera.PreviewCallback;
   import android.util.Log;
   import android.view.SurfaceHolder;
   import android.view.SurfaceView;
   
   public class CameraView extends SurfaceView implements 
   SurfaceHolder.Callback
   {
    SurfaceHolder holder;
    Camera camera;
    public CameraView(Context context) 
    {
     super(context);
     holder=getHolder();
     holder.addCallback(this);
     holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }
    public void surfaceChanged(SurfaceHolder holder, int format,
      int width,int height) 
    {
   
     Camera.Parameters parameters=camera.getParameters();
     parameters.set("flash-mode", "on");
     camera.setParameters(parameters);
     camera.startPreview();
    }
    public void surfaceCreated(SurfaceHolder holder) 
    {
     try 
     {
      camera=Camera.open();
      camera.setPreviewDisplay(holder);
     } catch (IOException e) 
     {
      e.printStackTrace();
     }
    }
    public void surfaceDestroyed(SurfaceHolder holder) 
    {
     camera.stopPreview();
     camera.setPreviewCallback(null);
     camera.release();
     camera=null;
    }
   }
   

2. Now Create front interface for camera Activity

   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.Window;
   import android.widget.*;
   
   public class CameraFront extends Activity
   {
    CameraView camview;
    FrameLayout frame;
    Button Click,Close;
    static String filename; 
    public void onCreate(Bundle bundle)
    {
     super.onCreate(bundle);
     requestWindowFeature(Window.FEATURE_NO_TITLE);
     setContentView(R.layout.camframe);
     Click=(Button)findViewById(R.id.buttonClick); 
     Click.setOnClickListener(new Button.OnClickListener(){
   
     public void onClick(View v) {
       
      camview.camera.takePicture(shutterCallback, 
        rawCallback, jpegCallback);
   
      }});
     Close=(Button)findViewById(R.id.buttonClose);
     Close.setOnClickListener(new Button.OnClickListener(){
   
     public void onClick(View v) {
     
      CameraFront.this.finish();
   
      }});
     camview=new CameraView(this);
     frame=(FrameLayout)findViewById(R.id.preview);
     frame.addView(camview);
    }
    ShutterCallback shutterCallback = new ShutterCallback() {
     public void onShutter() {
   
     }
    };
    PictureCallback rawCallback = new PictureCallback() {
     public void onPictureTaken(byte[] data, Camera camera) {
   
     }
    };
    PictureCallback jpegCallback = new PictureCallback() {
     public void onPictureTaken(byte[] data, Camera camera) {
      FileOutputStream outStream = null;
     try {
   
      long d=System.currentTimeMillis();
      filename="/sdcard/"+d+".jpg";
   
      outStream = new FileOutputStream(
        String.format("/sdcard/%d.jpg", d));
      outStream.write(data);
      outStream.close();
   
     } catch (FileNotFoundException e) {
      e.printStackTrace();
     } catch (IOException e) {
      e.printStackTrace();
     } finally {
   
     }
     CameraFront.this.finish();
     //ImageViewer to Show Image taken from camera
     Intent intent=new Intent(CameraFront.this,ImageViewer.class);
     intent.putExtra("imagefile", filename);
     startActivity(intent);
    }
   };
   }
   
   

3. 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="fill_parent"
       android:orientation="vertical" >
   
       <FrameLayout
           android:id="@+id/preview"
           android:layout_width="fill_parent"
           android:layout_height="fill_parent"
           android:layout_weight="1" >
       </FrameLayout>
   
       <LinearLayout
          xmlns:android="http://schemas.android.com/apk/res/android"
           android:layout_width="fill_parent"
           android:layout_height="fill_parent"
           android:orientation="horizontal"
           android:weightSum="1.0" >
   
           <Button
               android:id="@+id/buttonClick"
               android:layout_width="0dip"
               android:layout_height="wrap_content"
               android:layout_gravity="left"
               android:layout_weight="0.5"
               android:text="Click" >
           </Button>
   
           <Button
              android:id="@+id/buttonClose"
              android:layout_width="0dip"
               android:layout_height="wrap_content"
               android:layout_gravity="right"
               android:layout_weight="0.5"
              android:text="Close" >
           </Button>
       </LinearLayout>
   
   </LinearLayout>
   
   

4. It will store image in sdcard

Install apk from assets android

1. Copy/put your apk file in assets folder of your project
2. Set onClick event of button to install apk. Copy and paste following code
===============================================
public void loadMyApk()
{
copyAssets(); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/" + "BS.apk")), "application/vnd.android.package-archive"); startActivityForResult(intent, 4);
}
===============================================
private void copyAssets()
{
AssetManager assetManager = getAssets(); String[] files = null; try { files = assetManager.list(""); } catch (IOException e) { Log.e("tag", e.getMessage()); } for(String filename : files) { InputStream in = null; OutputStream out = null; try { //fileone=filename; in = assetManager.open(filename); out = new FileOutputStream("/sdcard/" + filename); copyFile(in, out); in.close(); in = null; out.flush(); out.close(); out = null; } catch(Exception e) { Log.e("tag", e.getMessage()); } }
}
===============================================
private void copyFile(InputStream in, OutputStream out) throws IOException
{
byte[] buffer = new byte[1024]; int read; while((read = in.read(buffer)) != -1){ out.write(buffer, 0, read); }
}
===============================================
3. Its done

In the above process I have copied apk file from assets folder to sdcard and installing from sdcard. If you want to delete from sdcard you can call delete() method for file