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Android状态栏提醒(Notification,NotificationManager)的使用

程序员文章站 2022-07-14 17:44:07
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第一步:新建一个Android工程命名为NotificationDemo.

第二步:修改main.xml代码如下:


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Welcome to Mr Wei's blog"
/>
<Button
android:id="@+id/showButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="showNotification"
/>
<Button
android:id="@+id/cancelButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="cancelNotification"
/>
</LinearLayout>

第三步:修改NotificationDemo.java代码如下:

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package com.tutor.notification;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class NotificationDemo extends Activity implements OnClickListener{

private Context mContext;
private Button showButton,cancelButton;
private Notification mNotification;
private NotificationManager mNotificationManager;
private final static int NOTIFICATION_ID = 0x0001;

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

setupViews();
}
//这里是初始化一些操作,可以看到onCreate()方法里代码非常简洁。
public void setupViews(){
mContext = NotificationDemo.this;
showButton = (Button)findViewById(R.id.showButton);
cancelButton = (Button)findViewById(R.id.cancelButton);

mNotification = new Notification(R.drawable.icon,"This is a notification.",System.currentTimeMillis());
//将使用默认的声音来提醒用户
mNotification.defaults = Notification.DEFAULT_SOUND;
mNotificationManager = (NotificationManager)this.getSystemService(NOTIFICATION_SERVICE);


showButton.setOnClickListener(this);
cancelButton.setOnClickListener(this);
}
//按钮点击事件响应
public void onClick(View v) {

if(v == showButton){
Intent mIntent = new Intent(mContext,NotificationDemo.class);
//这里需要设置Intent.FLAG_ACTIVITY_NEW_TASK属性
mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent mContentIntent =PendingIntent.getActivity(mContext,0, mIntent, 0);
//这里必需要用setLatestEventInfo(上下文,标题,内容,PendingIntent)不然会报错.
mNotification.setLatestEventInfo(mContext, "10086", "您的当前话费不足,请充值.哈哈~", mContentIntent);
//这里发送通知(消息ID,通知对象)
mNotificationManager.notify(NOTIFICATION_ID, mNotification);
}else if(v == cancelButton){
//取消只要把通知ID传过来就OK了.
mNotificationManager.cancel(NOTIFICATION_ID);
}
}
}


运行Android工程,效果如下图所示:

[img]http://dl.iteye.com/upload/attachment/424103/4bcccaf7-9cf7-33d4-9fb8-21caeb51d371.gif[/img]

[img]http://dl.iteye.com/upload/attachment/424106/6e6ce857-29a4-3880-89aa-537baeebaf08.gif[/img]

[img]http://dl.iteye.com/upload/attachment/424105/94b80ebb-1d9f-3053-b982-02427a993a1e.gif[/img]

[img]http://dl.iteye.com/upload/attachment/424109/43cfe7a1-5275-30c8-ab9a-ab951463173b.gif[/img]
相关标签: Android OS XML