Notification的使用

package com.example.notification;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationCompat.Builder;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

	private Button show;
	private NotificationManager manager;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		show = (Button) findViewById(R.id.button);
		show.setOnClickListener(new OnClickListener() {
			public static final int NOTIFICATIONID = 1200;

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				// 获取builder
				Builder builder = new NotificationCompat.Builder(
						MainActivity.this);
				// 必须的三个属性
				builder.setSmallIcon(R.drawable.ic_launcher);
				builder.setContentTitle("a message");
				builder.setContentText("............");
				// build
				Notification notification = builder.build();
				// 获取系统的NotificationManager对象
				manager = 
	(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
				manager.notify(NOTIFICATIONID, notification);
			}
		});
	}
}


//第二种
package com.example.shownotification;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

	private Button showNotification;

	private NotificationManager nm;// 通知管理器

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		nm =(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
		nm.cancel(R.layout.activity_main);// 取消通知
		showNotification = (Button) this.findViewById(R.id.showNotification);
		showNotification.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				// 建立通知
				Notification n = new Notification(R.drawable.ic_launcher,
						"Ticker Text", System.currentTimeMillis());
				n.setLatestEventInfo(MainActivity.this, "title", "content",
						PendingIntent.getActivity(MainActivity.this, 1,
								getIntent(), 0));
				nm.notify(R.layout.activity_main, n);// 通知管理器加载通知
			}
		});
	}
}

运行结果：