更改通知布局

Question

我反编译了我的系统音乐应用程序（来自Sony Ericsson for Android GB 2.3.7），因为我想更改通知布局。我找到了使用此代码创建通知的方法：

private void sendStatusBarNotification(Track paramTrack)
{
    if (paramTrack != null)
    {
        NotificationManager localNotificationManager = (NotificationManager)this.mContext.getSystemService("notification");
        String str = paramTrack.getArtist();

        if ((str == null) || (str.equals(this.mContext.getString(2131361954))))
            str = this.mContext.getString(2131361798);

        Notification localNotification = new Notification(2130837696, paramTrack.getTitle() + " - " + str, System.currentTimeMillis());
        localNotification.flags = (0x2 | localNotification.flags);
        localNotification.flags = (0x20 | localNotification.flags);

        PendingIntent localPendingIntent = PendingIntent.getActivity(this.mContext, 0, new Intent(this.mContext, MusicActivity.class), 268435456);
        localNotification.setLatestEventInfo(this.mContext, paramTrack.getTitle(), str, localPendingIntent);
        localNotificationManager.notify(0, localNotification);
    }
}

我现在的问题是：如何更改通知布局？我想构建一个看起来像原始Android通知布局但在通知右侧有一个额外图像的布局。我怎么能这样做？

Answer 1

首先为您的通知创建一个xml。

<强> custom_notification.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp" >
    <ImageView android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_marginRight="10dp" />
    <TextView android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/image"
        style="Custom Notification Title" />
    <TextView android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/image"
        android:layout_below="@id/title"
        style="Custom Notification Text" />
</RelativeLayout>

现在是java代码：

public class MainActivity extends Activity {

    @SuppressWarnings("deprecation")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        int icon = R.drawable.ic_launcher;
        long when = System.currentTimeMillis();
        Notification notification = new Notification(icon, "Custom Notification", when);

        NotificationManager mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);

        RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification);
        contentView.setImageViewResource(R.id.image, R.drawable.ic_launcher);
        contentView.setTextViewText(R.id.title, "Custom notification");
        contentView.setTextViewText(R.id.text, "This is a custom layout");
        notification.contentView = contentView;

        Intent notificationIntent = new Intent(this, MainActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
        notification.contentIntent = contentIntent;

        notification.flags |= Notification.FLAG_NO_CLEAR; //Do not clear the notification
        notification.defaults |= Notification.DEFAULT_LIGHTS; // LED
        notification.defaults |= Notification.DEFAULT_VIBRATE; //Vibration
        notification.defaults |= Notification.DEFAULT_SOUND; // Sound

        mNotificationManager.notify(1, notification);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

希望这件事适合你。

修改：如果您遇到this等问题，也可以访问。

另外，您可以访问here了解详情。

2016年4月26日编辑您可以使用NotificationCompat.Builder创建Notification个实例，如下所示：

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(icon)
            .setContent(contentView)
            .setContentTitle("Custom Notification")
            .setWhen(when);
...
mNotificationManager.notify(1, notificationBuilder.build());

Answer 2

这里我附上了截图，第一个屏幕内容是帖子的标题，当我们点击应用名称右侧的向下箭头时，它会导致第二个截图，即推送通知的自定义布局。是我为我设计的样本布局。

<?xml version="1.0" encoding="utf-8"?>
<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="wrap_content"
android:layout_margin="4dp"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
card_view:cardCornerRadius="5dp"
card_view:cardUseCompatPadding="true">

<LinearLayout
    android:layout_width="match_parent"
    android:orientation="horizontal"
    android:background="#80000000"
    android:layout_height="wrap_content">

    <ImageView
        android:src="@mipmap/ic_launcher"
        android:layout_width="50dp"
        android:layout_height="match_parent"
        android:padding="10dp"
        android:layout_marginLeft="5dp"
        android:background="@null"
        android:layout_gravity="center_vertical|center_horizontal"
        android:scaleType="centerCrop"/>
    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:minHeight="48dp"
        android:paddingBottom="16dp"
        android:paddingLeft="16dp"
        android:paddingRight="16dp"
        android:paddingTop="16dp"
        android:background="@android:color/transparent"
        android:textColor="@android:color/white"
        tools:text="Test"/>
</LinearLayout>
<ImageView
    android:id="@+id/image"
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:adjustViewBounds="true"
    android:contentDescription="@null"
    android:scaleType="centerCrop"
    android:src="@drawable/placeholder"/>
</LinearLayout>

使用自定义布局创建通知的方法

public static void createNotification(String title, String body,String image_url, Context context, int notificationsId, String single_id) {
    Intent notificationIntent;

    long when = System.currentTimeMillis();
    int id = (int) System.currentTimeMillis();

    Bitmap bitmap = getBitmapFromURL(image_url);
    NotificationCompat.BigPictureStyle notifystyle = new NotificationCompat.BigPictureStyle();
    notifystyle.bigPicture(bitmap);
    RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.custom_notification_layout);
    contentView.setImageViewBitmap(R.id.image, bitmap);
    contentView.setTextViewText(R.id.title, body);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
            .setSmallIcon(R.drawable.ic_launcher)
            .setStyle(notifystyle)
            .setCustomBigContentView(contentView)
            .setContentText(body);
    NotificationManager mNotificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);

    notificationIntent = new Intent(context, SinglePost.class);
    notificationIntent.putExtra("single_id",single_id);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
    PendingIntent contentIntent = PendingIntent.getActivity(context, id, notificationIntent, 0); 

    Notification notification = mBuilder.build();
    notification.contentIntent = contentIntent;
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notification.defaults |= Notification.DEFAULT_SOUND;
    notification.defaults |= Notification.DEFAULT_VIBRATE;


    mNotificationManager.notify(notificationsId, notification);

}

public static Bitmap getBitmapFromURL(String strURL) {
    try {
        URL url = new URL(strURL);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

Answer 3

要创建自定义通知布局，请查看Android API指南on the subject。看起来您将使用RemoteViews类。

Answer 4

如果能够获得布局数据，无论是代码还是xml，都会很好。

关闭提供的内容，我可以说你必须得到图像并将其放入new Notification(2130837696, paramTrack.getTitle() + " - " + str, System.currentTimeMillis());声明中。

老实说，这就是我能用你所提供的东西给你的全部。祝你好运！