Android項目之HomeHealth基礎學習1：Service

MainActivity.java代碼如下：

package com.example.hellowendy;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener {
	/** Called when the activity is first created. */
	Button buttonOn, buttonOff;
	String TAG = "ServiceActivity";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		buttonOn = (Button) findViewById(R.id.button_on);
		buttonOff = (Button) findViewById(R.id.button_off);

		buttonOn.setOnClickListener(this);
		buttonOff.setOnClickListener(this);
		Log.v(TAG, "ActivityonCreate");
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		switch (v.getId()) {

		case (R.id.button_on):
			Log.v(TAG, "ActivitystartService");
			this.startService(new Intent(this, PlayService.class));
			// startService(new Intent(this, PlayService.class));

			break;
		case (R.id.button_off): {
			Log.v(TAG, "ActivitystopService");
			this.stopService(new Intent(this, PlayService.class));
			// stopService(new Intent(this, PlayService.class));

		}
			break;

		default:
			break;

		}

	}

	@Override
	protected void onStop() {
		// TODO Auto-generated method stub
		super.onStop();
		Log.v(TAG, "ActivityonStop");
	}

	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		Log.v(TAG, "ActivityonDestroy");
		super.onDestroy();

	}

}

PlayService.java代碼如下：

/**
 * 
 */
/**
 * @author Administrator
 *
 */
package com.example.hellowendy;

import java.io.IOException;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

public class PlayService extends Service {
	String TAG = "ServiceActivity";
	MediaPlayer mediaPlayer;

	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void onCreate() {
		// TODO Auto-generated method stub
		super.onCreate();
		Toast.makeText(this, "Play Service Created", Toast.LENGTH_LONG).show();
		Log.v(TAG, "ServiceonCreate");
		
		//TextView txtview;
		
		//txtview = (TextView) findViewById(R.id.txt);
		
		//從本地資源中獲取的歌曲cong.mp3, “匆匆那年”,cong.mp3目錄是hellowendy -> res ->raw -> cong.mp3
		mediaPlayer = MediaPlayer.create(this, R.raw.cong);

	}

	@Override
	public void onStart(Intent intent, int startId) {
		// TODO Auto-generated method stub
		//super.onStart(intent, startId);
		//super.onStart();
		/*
		 * //可以在OnCreate裡面創建與音樂的鏈接，也可以在OnStart裡面創建 mediaPlayer =
		 * MediaPlayer.create(this, R.raw.test);
		 */
		Toast.makeText(this, "Play Service onStart", Toast.LENGTH_LONG).show();
		Log.v(TAG, "ServiceonStart");
		mediaPlayer.start();
	}

	@Override
	public void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		Toast.makeText(this, "Play Service Stopped", Toast.LENGTH_LONG).show();
		Log.v(TAG, "ServiconDestroy");
		mediaPlayer.stop();
	}

}