Android Taking Photo and Photo to Gallery

package com.myapp;

import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.view.View;
import android.view.Menu;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity {
	
	ImageView imgView;
	static final int REQUEST_TAKE_PHOTO = 1;
	String mCurrentPhotoPath;
	
	static String strSDCardPathName = Environment.getExternalStorageDirectory() + "/temp_picture" + "/";
	
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //*** Create Folder
        createFolder();
        
        //*** ImageView
        imgView = (ImageView) findViewById(R.id.imgView);
                
        //*** Take Photo
        final Button btnTakePhoto = (Button) findViewById(R.id.btnTakePhoto);
        // Perform action on click
        btnTakePhoto.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
        	     	
        	    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        	    // Ensure that there's a camera activity to handle the intent
        	    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        	        // Create the File where the photo should go
        	        File photoFile = null;
        	        try {
        	            photoFile = createImageFile();
        	        } catch (IOException ex) {}
        	        // Continue only if the File was successfully created
        	        if (photoFile != null) {
        	            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
        	                    Uri.fromFile(photoFile));
        	            startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
        	        }
        	    }
        	    
            }	
        });
        
    }
    
	
	 
	private File createImageFile() throws IOException {
	    // Create an image file name
	    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
	    String imageFileName = "JPEG_" + timeStamp + "_";
	    File storageDir = new File(strSDCardPathName);
	    File image = File.createTempFile(
	        imageFileName,  /* prefix */
	        ".jpg",         /* suffix */
	        storageDir      /* directory */
	    );

	    // Save a file: path for use with ACTION_VIEW intents
	    mCurrentPhotoPath = image.getAbsolutePath();
	    return image;
	} 
	 
	
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
	    if (resultCode == RESULT_OK) {	    	    	
			Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath);
			imgView.setImageBitmap(bitmap);
			
			//*** Add to Gallery
			GalleryAddPic();
	    }
	}
	
	private void GalleryAddPic() {
	    Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
	    File f = new File(mCurrentPhotoPath);
	    Uri contentUri = Uri.fromFile(f);
	    mediaScanIntent.setData(contentUri);
	    this.sendBroadcast(mediaScanIntent);
	}
	
	 public static void createFolder() 
     {
		File folder = new File(strSDCardPathName);
		try
		{
			// Create folder
			if (!folder.exists()) {
			    folder.mkdir();
			}
		}catch(Exception ex){}
		
     } 
	 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}