Notification是要发出的通知，NotificationManager用来发出和取消通知
大概的步骤：
1.获得系统服务NotificationManager
2.实例化Notification 并设置其属性
3.调用setLatestEventInfo方法在视图中设置图标和时间(这个方法在Android 3.0被弃用)
4.最后调用NotificationManager的notify方法 发出通知
package com.example.notification01;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
public class MainActivity extends Activity {
private Button btn1, btn2;
private Notification n;
private NotificationManager nm;
private static final int ID = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button) findViewById(R.id.button1);
btn1.setOnClickListener(new sendListener());
btn2 = (Button) findViewById(R.id.button2);
btn2.setOnClickListener(new cancelListener());
// 1.获得系统服务NotificationManager
nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// 2.实例化Notification 并设置其属性
n = new Notification();
n.icon = R.drawable.ic_launcher;
n.tickerText = "Notification测试";
n.when = System.currentTimeMillis();
}
public class sendListener implements OnClickListener {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pi = PendingIntent.getActivity(MainActivity.this, 0,
intent, 0);
// 3.调用setLatestEventInfo方法在视图中设置图标和时间(这个方法在Android 3.0被弃用)
n.setLatestEventInfo(MainActivity.this, "Title", "Content", pi);
// 4.最后调用NotificationManager的notify方法 发出通知
nm.notify(ID, n);
}
}
public class cancelListener implements OnClickListener {
@Override
public void onClick(View v) {
// 取消通知
nm.cancel(ID);
}
}
}
