接下来，以源代码的方式分析这个例子
1.MainActivity--主界面
这个类主要是实现用户所看到的这个Activity，其中包含了一系列的按钮，用户点击按钮执行相应的动作，所以在这个类中主要是对按钮的定义和对按钮绑定相应的监听器，下面是实现的代码：
package lovefang.stadyService;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.content.Intent;
import android.util.Log;
/**这是使用后台服务的学习例子*/
public class MainStadyServics extends Activity {
/**参数设置*/
Button startServiceButton;// 启动服务按钮
Button shutDownServiceButton;// 关闭服务按钮
Button startBindServiceButton;// 启动绑定服务按钮
Button sendBroadcast;// 使用广播
Button notificationButton;// 使用通知功能
Button alarmButton;// 使用闹钟
Button handlerButton;// 使用handler
Button asyncButton;// 使用异步加载
Button phoneStateButton;// 查看手机状态
Button callphoneButton;// 拨打电话
Button vibratorButton;// 使用震动
CountService countService;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.v("MainStadyServics", "setContentView");
setContentView(R.layout.main);
getWidget();
regiestListener();
}
/**获得组件*/
public void getWidget(){
startServiceButton = (Button)findViewById(R.id.startServerButton);
startBindServiceButton = (Button)findViewById(R.id.startBindServerButton);
shutDownServiceButton = (Button)findViewById(R.id.sutdownServerButton);
sendBroadcast = (Button)findViewById(R.id.sendBroadcast);
notificationButton = (Button)findViewById(R.id.notification);
alarmButton = (Button)findViewById(R.id.alarm);
handlerButton = (Button)findViewById(R.id.handler);
asyncButton = (Button)findViewById(R.id.async);
phoneStateButton = (Button) findViewById(R.id.phonestate);
callphoneButton = (Button) findViewById(R.id.callphone);
vibratorButton = (Button) findViewById(R.id.vibrator);
}
/**为按钮添加监听*/
public void regiestListener(){
startServiceButton.setOnClickListener(startService);
shutDownServiceButton.setOnClickListener(shutdownService);
startBindServiceButton.setOnClickListener(startBinderService);
sendBroadcast.setOnClickListener(broadcastReceiver);
notificationButton.setOnClickListener(notification);
alarmButton.setOnClickListener(startAlarm);
handlerButton.setOnClickListener(handler);
asyncButton.setOnClickListener(async);
phoneStateButton.setOnClickListener(phonestate);
callphoneButton.setOnClickListener(callphoneEvent);
vibratorButton.setOnClickListener(vibrator);
}
/**启动服务的事件监听*/
public Button.OnClickListener startService = new Button.OnClickListener(){
public void onClick(View view){
/**单击按钮时启动服务*/
Intent intent = new Intent(MainStadyServics.this,CountService.class);
startService(intent);
Log.v("MainStadyServics", "start Service");
}
};
/**关闭服务*/
public Button.OnClickListener shutdownService = new Button.OnClickListener(){
public void onClick(View view){
/**单击按钮时启动服务*/
Intent intent = new Intent(MainStadyServics.this,CountService.class);
/**退出Activity是，停止服务*/
stopService(intent);
Log.v("MainStadyServics", "shutDown serveice");
}
};
/**打开绑定服务的Activity*/
public Button.OnClickListener startBinderService = new Button.OnClickListener(){
public void onClick(View vi