android的幾種“通知”方式簡單實現（Notification&NotificationManager）

　　關於通知Notification相信大家都不陌生了，平時上QQ的時候有消息來了或者有收到了短信，手機頂部就會顯示有新消息什么的，就類似這種。今天就稍微記錄下幾種Notification的用法。3.0以前的通知和3.0以后的通知是有些區別的。話不多說，直接上代碼。

　　1、新建一個android項目

　　　　我新建項目的 minSdkVersion="11"，targetSdkVersion="19"。也就是支持最低版本的3.0的。

　　2、習慣性地打開項目清單文件AndroidManifest.xml，添加一個權限：<uses-permission android:name="android.permission.VIBRATE"/> 不添加不行的。

　　3、在布局activity_main.xml中添加幾個按鈕,樣子就大概這樣，垂直排版的LinearLayout

具體代碼

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".MainActivity" >

       <Button 
           android:id="@+id/btn_01"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="3.0以前版本的notification，用新的吧"
           android:onClick="click"
           />

       <Button 
           android:id="@+id/btn_02"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="大視圖文本通知"
           android:onClick="click"
           />
       
       <Button 
           android:id="@+id/btn_03"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="大視圖圖片通知"
           android:onClick="click"
           />
       
       <Button 
           android:id="@+id/btn_04"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="進度條通知"
           android:onClick="click"
           />
       
</LinearLayout>

 

 

 　　4、MainActivity中的代碼：

package com.xin.day_12_notificationdemo1;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationCompat.BigPictureStyle;
import android.support.v4.app.NotificationCompat.BigTextStyle;
import android.support.v4.app.NotificationCompat.Builder;
import android.util.Log;
import android.view.View;

public class MainActivity extends Activity {

    //通知的唯一標識，在一個應用程序中不同的通知要區別開來
    private static final int NO1 = 0x1001;
    private static final int NO2 = 0x1002;
    private static final int NO3 = 0x1003;
    private static final int NO4 = 0x1004;
    //進度條要用
    private int progress = 1;

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

    //click方法，和xml文件中的各個按鈕的onClick屬性的值要一致
    public void click(View view) {
        //創建NotificationManager
        final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        //用switch語句控制四個控件
        switch (view.getId()) {
        case R.id.btn_01: {
            Notification notification = new Notification();
            notification.icon = R.drawable.ic_launcher;
            notification.tickerText = "有消息了。。。";
            Intent intent = new Intent(this, MainActivity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
                    intent, PendingIntent.FLAG_UPDATE_CURRENT);
            notification.setLatestEventInfo(this, "3.0以前的通知", "試試而已", pendingIntent);
            notification.when = System.currentTimeMillis();
            notification.defaults = Notification.DEFAULT_ALL;
            notification.flags = Notification.FLAG_AUTO_CANCEL;
            notification.number = 1;
            notification.vibrate = new long[]{0, 4000};
            manager.notify(NO1, notification);
        }
        break;
        case R.id.btn_02:{
            //大視圖文本通知
            //創建消息構造器,在擴展包
            NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
            //設置當有消息是的提示，圖標和提示文字
            builder.setSmallIcon(R.drawable.ic_launcher).setTicker("有新消息了");
            //需要樣式
            BigTextStyle style = new BigTextStyle();
            style.setBigContentTitle("上課通知");//通知的標題
            style.bigText("今天下午要在綜B303上jsp");//通知的文本內容
            //大視圖文本具體內容
            style.setSummaryText("這是正常的課程安排，請各位同學按時上課");
            builder.setStyle(style);
            //顯示消息到達的時間，這里設置當前時間
            builder.setWhen(System.currentTimeMillis());
            //獲取一個通知對象
            Notification notification = builder.build();
            notification.flags = Notification.FLAG_AUTO_CANCEL;
            //發送(顯示)通知
            //notify()第一個參數id An identifier for this notification unique within your application
            //get?意思說，這個通知在你的應用程序中唯一的標識符
            manager.notify(NO2, notification);
        }
        break;
        
        case R.id.btn_03:{
            //大視圖圖片通知
            NotificationCompat.Builder builderPic = new Builder(this);
            builderPic.setSmallIcon(R.drawable.ic_launcher).setTicker("新浪體育提醒");
            //進行設置
            BigPictureStyle pictureStyle = new BigPictureStyle();
            pictureStyle.setBigContentTitle("新浪體育 快船VS騎士 ");
            pictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.ic_game));
            pictureStyle.setSummaryText(" 快船VS騎士 天王山之戰！！！");//不要在意文字
            //設置樣式
            builderPic.setStyle(pictureStyle);
            //設置顯示的時間
            builderPic.setWhen(System.currentTimeMillis());
            Notification notification = pictureStyle.build();
            notification.flags = Notification.FLAG_AUTO_CANCEL;
            //
            manager.notify(NO3, notification);
        }
        break;
        
        case R.id.btn_04:{
            //進度條通知
            final NotificationCompat.Builder builderProgress = new NotificationCompat.Builder(this);
            builderProgress.setSmallIcon(R.drawable.ic_launcher).setTicker("進度條通知");
            builderProgress.setProgress(100, progress, false);
            final Notification notification = builderProgress.build();
            //發送一個通知
            manager.notify(NO4, notification);
            //創建一個計時器
            Timer timer = new Timer();
            timer.schedule(new TimerTask(){

                @Override
                public void run() {
                    Log.i("progress",progress+"");
                    while(progress <= 100){
                        progress ++;
                        try {
                            Thread.sleep(300);
                        } catch (InterruptedException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        //更新進度條
                        builderProgress.setProgress(100, progress, false);
                        //再次通知
                        manager.notify(NO4, builderProgress.build());
                    }
                    //計時器退出
                    this.cancel();
                    //進度條退出
                    manager.cancel(NO4);
                    return;//結束方法
                }
                
            }, 0);
        }
        break;
        
        default:
            break;
        }
    }

}

 

 　　5、運行：我的虛擬機版本是4.0的，按住通知左（右）滑動就可以讓通知小時了。效果如下：