MediaScannerActivity.java

package com.google.mcommerce.sample.android.chapter10.mediaplay;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.MediaScannerConnectionClient;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import com.google.mcommerce.sample.android.R;

public class MediaScannerActivity extends Activity implements
		MediaScannerConnectionClient {
	private EditText editText = null;
	private String filename = null;
	private MediaScannerConnection conn;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.c10_media_scanner_layout);

		editText = (EditText) findViewById(R.id.fileName);
	}

	public void startScan(View view) {
		if (conn != null) {
			conn.disconnect();
		}

		filename = editText.getText().toString();

		File fileCheck = new File(filename);
		if (fileCheck.isFile()) {
			conn = new MediaScannerConnection(this, this);
			conn.connect();
		} else {
			Toast.makeText(this, "That file does not exist", Toast.LENGTH_SHORT)
					.show();
		}
	}

	@Override
	public void onMediaScannerConnected() {
		conn.scanFile(filename, null);
	}

	@Override
	public void onScanCompleted(String path, Uri uri) {
		try {
			if (uri != null) {
				Intent intent = new Intent(Intent.ACTION_VIEW);
				intent.setData(uri);
				startActivity(intent);
			} else {
				Log.e("MediaScannerDemo", "That file is no good");
			}
		} finally {
			conn.disconnect();
			conn = null;
		}
	}
}