In this tutorial I’ll show how we can access the media galery, pick a picture, and display it in our activity.

The final result will look like this:

1. Create a new project in Eclipse
Project name: MediaGalery 
Activity: MediaGaleryActivity.

2. Add a Button and an ImageView control to the main.xml layout file:

<?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" >

<Button
android:id="@+id/openGalery"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Open Media Galery" />

<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="@drawable/ic_launcher"
/>

</LinearLayout>

3. Open the MediaGaleryActivity and make it implement the OnClickListener

public class MediaGaleryActivity extends Activity implements OnClickListener {

4. Just after the class declaration, add the following instance variables:

private static final int SELECT_IMAGE = 1;
Button openGalery;

5. Add following lines of code in the onCreate() method:

openGalery = (Button) findViewById(R.id.openGalery);
openGalery.setOnClickListener(this);

6. Below the onCreate() method, add the onClick() method:

//When the Open Media Gallery button is cliked, open the media galery

@Override
public void onClick(View v) {
  switch (v.getId()) {
  case R.id.openGalery:
  Intent gallery = new Intent(
  Intent.ACTION_PICK,
  android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);
  startActivityForResult(gallery, SELECT_IMAGE);
  break;

  default:
    break;
}
}

7. Below the onClick() method, add following 2 methods.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);

  if(resultCode==RESULT_OK && requestCode==SELECT_IMAGE){
   Uri selectedImage=data.getData();
   String path=getPath(selectedImage);

   Bitmap bitmapImage=BitmapFactory.decodeFile(path);
   ImageView image=(ImageView)findViewById(R.id.image);
   image.setImageBitmap(bitmapImage);

  }
}

public String getPath(Uri uri){
  String[] filePathColumn={MediaStore.Images.Media.DATA};

  Cursor cursor=getContentResolver().query(uri, filePathColumn, null, null, null);
  cursor.moveToFirst();
  int columnIndex=cursor.getColumnIndex(filePathColumn[0]);

  return cursor.getString(columnIndex);
}