Android

2018-06-05-Notification

2018-06-05  本文已影响0人  天才蒙蒙亮

Notification 通知栏

Notification是在应用常规界面之外展示的消息。当app让系统发送一个消息的时候，消息首先以图标的形式显示在通知栏中。要查看消息的详情需要进入通知抽屉（notificationdrawer）中查看。通知栏和通知抽屉都是系统曾main控制的，你可以随时查看，不限制于App。

Notication的创建

public class MainActivity extends Activity {


    private static final int NID_1 = 0x1;

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

    }

    public void sendnotification1(View v){
        //API 11以后
//        Notification.Builder builder = new Notification.Builder(this);
        //v4支持包
        NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this);
        //设置相关属性
        builder1.setSmallIcon(R.mipmap.ic_launcher);//设置小图标
        builder1.setContentTitle("你有一条新的消息");
        builder1.setContentText("你好啊");

        //创建一个通知对象
        Notification n = builder1.build();

        //获取系统的通知管理器，并发送
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_1,n);

    }

}

notification的其他属性

//其他不必要的属性
        builder1.setAutoCancel(true);
        builder1.setDefaults(Notification.DEFAULT_ALL);  //声音、震动、呼吸灯
        builder1.setNumber(10);
        builder1.setTicker("新消息"); //没下拉的时候显示的字
        builder1.setOngoing(true); //设置为常驻通知

利用Intent，通过notification打开另一个Activity

public class MainActivity extends Activity {


    public static final int NID_1 = 0x1;

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

    }

    public void sendnotification1(View v){
        //API 11以后
//        Notification.Builder builder = new Notification.Builder(this);
        //v4支持包
        NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this);
        //设置相关属性
        builder1.setSmallIcon(R.mipmap.ic_launcher);//设置小图标
        builder1.setContentTitle("你有一条新的消息");
        builder1.setContentText("你好啊");

        //其他不必要的属性
        builder1.setAutoCancel(true);
        builder1.setDefaults(Notification.DEFAULT_ALL);  //声音、震动、呼吸灯
        builder1.setNumber(10);
        builder1.setTicker("新消息"); //没下拉的时候显示的字
        builder1.setOngoing(true); //设置为常驻通知

        //定义一个意图，当店家通知时要打开一个界面
        Intent intent = new Intent(this,Main2Activity.class);
        //参数：上下文，请求编码，意图，创建PendingIntent的方式
//        PendingIntent.FLAG_CANCEL_CURRENT   :取消当前的PI，创建新的
//        PendingIntent.FLAG_NO_CREATE :如果有就使用，没有就不创建
//        PendingIntent.FLAG_ONE_SHOT :只是用一次
//        PendingIntent.FLAG_UPDATE_CURRENT   ：如果有，更新Intent，没有就创建
        PendingIntent pi = PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_CANCEL_CURRENT);
        //通知的事件
        builder1.setContentIntent(pi);

        //创建一个通知对象
        Notification n = builder1.build();

        //获取系统的通知管理器，并发送
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_1,n);

    }

}

另一个被打开的Activity

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        //打开界面后取消指定ID的通知
        //Notification是系统层的服务，从哪里都可以获取到
        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        nm.cancel(MainActivity.NID_1);
    }

}

第二个Activity中取消notification和第一个Activity中

builder1.setAutoCancel(true);

这里的效果一样，原因是notification是系统层的服务，从哪里都可以获取

大视图的notification

大视图的东西样式设置一般在Style中，普通设置（比如说setContentTitle、setContentText）在builder

 //API 11以后
//        Notification.Builder builder = new Notification.Builder(this);
        //v4支持包
        NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this);
        //设置相关属性
        builder1.setSmallIcon(R.mipmap.ic_launcher);//设置小图标
        builder1.setContentTitle("消息");
        builder1.setContentText("消息");

        //新建样式
        NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
        style.setBigContentTitle("吟诗作对");
        style.addLine("长亭外");
        style.addLine("古道边");
        style.addLine("一行白鹭上青天");

        builder1.setStyle(style);

        Notification n = builder1.build();
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_2,n);

显示进度条通知

线程模拟发送进度

public void sendnotification3(View v){
        //API 11以后
//        Notification.Builder builder = new Notification.Builder(this);
        //v4支持包
        final NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this);
        //设置相关属性
        builder1.setSmallIcon(R.mipmap.ic_launcher);//设置小图标
        builder1.setContentTitle("更新中..");
        builder1.setContentText("正在升级");
        builder1.setProgress(100,5,false); //总进度，现在进度，确定的

        final NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_3,builder1.build());


        //模拟更新的线程
        new Thread(new Runnable() {
            @Override
            public void run() {
                for(int progress = 0; progress <= 100; progress+=5){
                    NotificationCompat.Builder builder = builder1.setProgress(100, progress, false);
                    nm.notify(NID_3, builder1.build());
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                builder1.setProgress(0,0,false);
                builder1.setContentText("更新完成");
                nm.notify(NID_3,builder1.build());
            }
        }).start();

    }

}

自定义通知视图

public void sendnotification4(View v){
        final NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        //创建一个远程的视图
        RemoteViews views = new RemoteViews(getPackageName(),R.layout.custom_layout);
        builder.setContent(views);
        builder.setTicker("音乐");
        builder.setOngoing(true);
        builder.setSmallIcon(R.mipmap.ic_launcher);//设置小图标

        //view显示的其他内容
        //button也是继承
        views.setTextViewText(R.id.button,"暂停");
//        views.setOnClickPendingIntent();  按钮的单击事件，通过Intent启动另一个Actiity

        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID4,builder.build());
    }

自定义的布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageView"
        android:maxWidth="64dp"
        android:maxHeight="64dp"
        android:src="@drawable/ic_launcher"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textview"
        android:text="歌曲名称"
        android:layout_weight="1"/>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="New Button"
        android:id="@+id/button"
        android:layout_gravity="center_horizontal" />


</LinearLayout>
上一篇下一篇

猜你喜欢

热点阅读