Android的服务与其他类的实例通信 [英] android service communicates with other class instances

问题描述

首先我给大家介绍的逻辑。

first let me describe the logic.

1. 用户对照片依次上传按钮启动的接送服务上传本地照片到服务器。

1. User turn on Photos Upload button to launch a transfer service to upload local photos to server.

当应用程序被留下看不见的用户。继续监测当地的照片，如果相机新品的照片，立刻把它上传。我用这个 ContentResolver的分辨率实施功能。

When the app was left invisible to user. still monitor the local photos, if camera new photos, upload it immediately. I use this ContentResolver resolution to implement the function.

后终止应用程序，用户可以采取新的照片，当重新启动应用程序，扫描本地SD卡，并上传这些新照片。

after terminate the app, user may take new photos, when restart the app, scan the local sd-card and upload those new photo.

下面是我的问题：

我应该在什么时候把第二步投入运营的情况下活性destroied。我应该使用其他服务来实现第3步业务。

When should I put step2 into Service in case the activity was destroied. should I use another service to implement the step3 business.

您可以找到在Github <源/ A>

you can find the source on Github

请参见下面的源代码片段：

see the source snippet below:

    Intent txIntent = new Intent(this, TransferService.class);
    startService(txIntent);
    Log.d(DEBUG_TAG, "start TransferService");

    // bind transfer service
    Intent bIntent = new Intent(this, TransferService.class);
    bindService(bIntent, mConnection, Context.BIND_AUTO_CREATE);
    Log.d(DEBUG_TAG, "try bind TransferService");

    Intent monitorIntent = new Intent(this, FileMonitorService.class);
    startService(monitorIntent);

    Intent cameraUploadIntent = new Intent(this, CameraUploadService.class);
    startService(cameraUploadIntent);

    this.getApplicationContext().getContentResolver().registerContentObserver(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, false, cameraUploadObserver);
    `

所以，我应该把cameraUploadObserver服务？

So should I put cameraUploadObserver in service?

推荐答案

按照步骤来实现的要求：

follow steps to implement the requirement:

1. 创建服务来满足需求两部分。

1. create a service to fulfill the two parts of requirements

UI按钮来触发该服务

UI button to trigger the service

里面的服务类，登记内容观察员检​​测相机的事件，该事件文件的onChange（）方法，这样你就可以上传照片的onChange（）方法

inside service class, register a Content Observer to detect camera event, the event files onChange() method, so you can upload photo in onChange() method

转让登记服务，绑定的连接，并用它来上传onStartCommand下的所有本地照片（）方法。

register a Transfer service, bind the connection and use that to upload all local photos under onStartCommand() method.

<一个href="https://github.com/Logan676/seadroid/blob/lg2/src/com/seafile/seadroid2/sync/CameraUploadService.java"相对=nofollow>去GitHub的网站查看整个项目。

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