Notification範例

這個例子來利用Notification來示範通知，

首先在layout 中配置三顆按鈕

再回到MainActivity中來實作這三顆按鈕

首先在onCreate()中先宣告一個NotificationManager 的變數mgr

mgr = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);

因為在API26以上的notification都要使用NotificationChannel

因此在onCreate中還要加上

if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.O)
{
    NotificationChannel notificationChannel = new NotificationChannel("YH","custom",NotificationManager.IMPORTANCE_HIGH);
    mgr.createNotificationChannel(notificationChannel);
}

在第一顆按鈕中，只是單純的秀出文字

先宣告一個NotificationCompat.Builder 的變數builder，設定ContentTitle，ContextText()

再利用mgr.notify 通知訊息發送

public void Test1(View view) {
    builder = new NotificationCompat.Builder(this,CHANNEL_ID);
    builder.setContentTitle("重要通知").setContentText("通知內容")
            .setSmallIcon(R.drawable.ic_stat_name)
            ;

    mgr.notify(1,builder.build());
}

第二顆按鈕，我們加上一個largeIcon

Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),R.mipmap.yh);
builder = new NotificationCompat.Builder(this,CHANNEL_ID);
builder.setContentTitle("重要通知")
        .setContentText("通知內容")
        .setSmallIcon(R.drawable.ic_stat_name)
        .setLargeIcon(largeIcon)
        .setSubText("Sub Text")
        .setTicker("Ticker");


mgr.notify(2,builder.build());

第三顆按鈕

設定 Intent resultIntent = new Intent(this,ResultActivit.class);

排程TaskStackBuilder stackBuilder

TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    stackBuilder.addParentStack(ResultActivit.class);
    stackBuilder.addNextIntent(resultIntent);

設定resultPendingIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);

public void Test3(View view) {
    Intent resultIntent = new Intent(this,ResultActivit.class);
    String title = "Hello Jacky";
    String content = "This is a notification";
    Email email = new Email(title,content);
    Bundle bundle = new Bundle();
    bundle.putSerializable("email",email);
    resultIntent.putExtras(bundle);


    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    stackBuilder.addParentStack(ResultActivit.class);
    stackBuilder.addNextIntent(resultIntent);

    PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);

    Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),R.mipmap.yh);
    builder = new NotificationCompat.Builder(this);
    builder.setContentTitle("重要通知")
            .setContentText("通知內容")
            .setSmallIcon(R.drawable.ic_stat_name)
            .setLargeIcon(largeIcon)
            .setSubText("Sub Text")
            .setChannelId("YH")
            .setContentIntent(resultPendingIntent)
            .setTicker("Ticker");


    mgr.notify(3,builder.build());

}

MainActivity 添加

<activity android:name=".ResultActivit"

    android:parentActivityName=".MainActivity"></activity>