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[操作系统]android的几种“通知”方式简单实现(NotificationNotificationManager)


  关于通知Notification相信大家都不陌生了,平时上QQ的时候有消息来了或者有收到了短信,手机顶部就会显示有新消息什么的,就类似这种。今天就稍微记录下几种Notification的用法。3.0以前的通知和3.0以后的通知是有些区别的。话不多说,直接上代码。

  1、新建一个android项目

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

  2、习惯性地打开项目清单文件AndroidManifest.

  3、在布局activity_main.

具体代码

 

<LinearLayout ="http://schemas.android.com/apk/res/android"  ="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="大视图文本通知"      android:onClick="click"      />       <Button      android:id="@+id/btn_03"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:text="大视图图片通知"      android:onClick="click"      />       <Button      android:id="@+id/btn_04"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:text="进度条通知"      android:onClick="click"      />    </LinearLayout>

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   4、MainActivity中的代码:

 1 package com.xin.day_12_notificationdemo1; 2  3 import java.util.Timer; 4 import java.util.TimerTask; 5  6 import android.app.Activity; 7 import android.app.Notification; 8 import android.app.NotificationManager; 9 import android.app.PendingIntent; 10 import android.content.Intent; 11 import android.graphics.BitmapFactory; 12 import android.os.Bundle; 13 import android.support.v4.app.NotificationCompat; 14 import android.support.v4.app.NotificationCompat.BigPictureStyle; 15 import android.support.v4.app.NotificationCompat.BigTextStyle; 16 import android.support.v4.app.NotificationCompat.Builder; 17 import android.util.Log; 18 import android.view.View; 19  20 public class MainActivity extends Activity { 21  22   //通知的唯一标识,在一个应用程序中不同的通知要区别开来 23   private static final int NO1 = 0x1001; 24   private static final int NO2 = 0x1002; 25   private static final int NO3 = 0x1003; 26   private static final int NO4 = 0x1004; 27   //进度条要用 28   private int progress = 1; 29  30   @Override 31   protected void onCreate(Bundle savedInstanceState) { 32     super.onCreate(savedInstanceState); 33     setContentView(R.layout.activity_main); 34   } 35  36   //click方法,和 37   public void click(View view) { 38     //创建NotificationManager 39     final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 40     //用switch语句控制四个控件 41     switch (view.getId()) { 42     case R.id.btn_01: { 43       Notification notification = new Notification(); 44       notification.icon = R.drawable.ic_launcher; 45       notification.tickerText = "有消息了。。。"; 46       Intent intent = new Intent(this, MainActivity.class); 47       PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, 48           intent, PendingIntent.FLAG_UPDATE_CURRENT); 49       notification.setLatestEventInfo(this, "3.0以前的通知", "试试而已", pendingIntent); 50       notification.when = System.currentTimeMillis(); 51       notification.defaults = Notification.DEFAULT_ALL; 52       notification.flags = Notification.FLAG_AUTO_CANCEL; 53       notification.number = 1; 54       notification.vibrate = new long[]{0, 4000}; 55       manager.notify(NO1, notification); 56     } 57     break; 58     case R.id.btn_02:{ 59       //大视图文本通知 60       //创建消息构造器,在扩展包 61       NotificationCompat.Builder builder = new NotificationCompat.Builder(this); 62       //设置当有消息是的提示,图标和提示文字 63       builder.setSmallIcon(R.drawable.ic_launcher).setTicker("有新消息了"); 64       //需要样式 65       BigTextStyle style = new BigTextStyle(); 66       style.setBigContentTitle("上课通知");//通知的标题 67       style.bigText("今天下午要在综B303上jsp");//通知的文本内容 68       //大视图文本具体内容 69       style.setSummaryText("这是正常的课程安排,请各位同学按时上课"); 70       builder.setStyle(style); 71       //显示消息到达的时间,这里设置当前时间 72       builder.setWhen(System.currentTimeMillis()); 73       //获取一个通知对象 74       Notification notification = builder.build(); 75       notification.flags = Notification.FLAG_AUTO_CANCEL; 76       //发送(显示)通知 77       //notify()第一个参数id An identifier for this notification unique within your application 78       //get?意思说,这个通知在你的应用程序中唯一的标识符 79       manager.notify(NO2, notification); 80     } 81     break; 82      83     case R.id.btn_03:{ 84       //大视图图片通知 85       NotificationCompat.Builder builderPic = new Builder(this); 86       builderPic.setSmallIcon(R.drawable.ic_launcher).setTicker("新浪体育提醒"); 87       //进行设置 88       BigPictureStyle pictureStyle = new BigPictureStyle(); 89       pictureStyle.setBigContentTitle("新浪体育 快船VS骑士 "); 90       pictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.ic_game)); 91       pictureStyle.setSummaryText(" 快船VS骑士 天王山之战!!!");//不要在意文字 92       //设置样式 93       builderPic.setStyle(pictureStyle); 94       //设置显示的时间 95       builderPic.setWhen(System.currentTimeMillis()); 96       Notification notification = pictureStyle.build(); 97       notification.flags = Notification.FLAG_AUTO_CANCEL; 98       // 99       manager.notify(NO3, notification);100     }101     break;102     103     case R.id.btn_04:{104       //进度条通知105       final NotificationCompat.Builder builderProgress = new NotificationCompat.Builder(this);106       builderProgress.setSmallIcon(R.drawable.ic_launcher).setTicker("进度条通知");107       builderProgress.setProgress(100, progress, false);108       final Notification notification = builderProgress.build();109       //发送一个通知110       manager.notify(NO4, notification);111       //创建一个计时器112       Timer timer = new Timer();113       timer.schedule(new TimerTask(){114 115         @Override116         public void run() {117           Log.i("progress",progress+"");118           while(progress <= 100){119             progress ++;120             try {121               Thread.sleep(300);122             } catch (InterruptedException e) {123               // TODO Auto-generated catch block124               e.printStackTrace();125             }126             //更新进度条127             builderProgress.setProgress(100, progress, false);128             //再次通知129             manager.notify(NO4, builderProgress.build());130           }131           //计时器退出132           this.cancel();133           //进度条退出134           manager.cancel(NO4);135           return;//结束方法136         }137         138       }, 0);139     }140     break;141     142     default:143       break;144     }145   }146 147 }

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   5、运行:我的虚拟机版本是4.0的(api19),按住通知左(右)滑动就可以让通知小时了。效果如下: