当我的任务运行时在状态栏中显示图标

发布于 2024-12-26 13:21:51 字数 134 浏览 1 评论 0原文

我正在创建一个 android 服务，它将在设备启动过程完成后开始运行。在我的服务中，我正在创建一个任务。该任务将根据某些条件随时启动或停止。我的意图是每当我开始任务时，我想在状态栏中显示一个图标，以知道我的任务正在运行，就像蓝牙图标在打开时会显示一样。

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星軌x 2025-01-02 13:21:51

您需要一个通知。代码在说话:)

在您的服务中：

private NotificationManager mNM;
private int NOTIFICATION = 10002; //Any unique number for this notification

要显示通知：

private void showNotification() {
    // In this sample, we'll use the same text for the ticker and the expanded notification
    CharSequence text = getText(R.string.local_service_started);

    // Set the icon, scrolling text and timestamp
    Notification notification = new Notification(R.drawable.status_icon, text, System.currentTimeMillis());

    // The PendingIntent to launch our activity if the user selects this notification
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class), 0);

    // Set the info for the views that show in the notification panel.
    notification.setLatestEventInfo(this, getText(R.string.local_service_label), text, contentIntent);

    // Send the notification.
    mNM.notify(NOTIFICATION, notification);
}

并隐藏它，您只需执行以下操作：

mNM.cancel(NOTIFICATION); //The same unique notification number.

以下是一些说明：

R.drawable.status_icon ：通知图标
R.string .local_service_started ：通知标题
R.string.local_service_label ：通知最新信息（子标题）
MainActivity.class ：将要执行的 Activity当用户单击通知时启动

You need a Notification. Code is talking :)

In your Service:

private NotificationManager mNM;
private int NOTIFICATION = 10002; //Any unique number for this notification

To show the notification:

private void showNotification() {
    // In this sample, we'll use the same text for the ticker and the expanded notification
    CharSequence text = getText(R.string.local_service_started);

    // Set the icon, scrolling text and timestamp
    Notification notification = new Notification(R.drawable.status_icon, text, System.currentTimeMillis());

    // The PendingIntent to launch our activity if the user selects this notification
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class), 0);

    // Set the info for the views that show in the notification panel.
    notification.setLatestEventInfo(this, getText(R.string.local_service_label), text, contentIntent);

    // Send the notification.
    mNM.notify(NOTIFICATION, notification);
}

and to hide it, you simply do this:

mNM.cancel(NOTIFICATION); //The same unique notification number.

Here are some clarifications:

R.drawable.status_icon : Notification icon
R.string.local_service_started : Notification title
R.string.local_service_label : Notification latest info (sub-title)
MainActivity.class : The Activity that will be launched when the user click the notification

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