A multi-threaded download tool written with RxJava and Kotlin

Read this in other languages: 中文, English, Changelog

Prepare

• Add jitpack repo:

  ```gradle maven { url 'https://jitpack.io' }

• Add RxDownload dependency:

    //Load on demand
    implementation "com.github.ssseasonnn.RxDownload:rxdownload4:1.1.4"
    implementation "com.github.ssseasonnn.RxDownload:rxdownload4-manager:1.1.4"
    implementation "com.github.ssseasonnn.RxDownload:rxdownload4-notification:1.1.4"
    implementation "com.github.ssseasonnn.RxDownload:rxdownload4-recorder:1.1.4"
  
    or: 
    //Add all dependencies of RxDownload4
    implementation "com.github.ssseasonnn:RxDownload:1.1.4"
  

Basic Usage

• Start download:

    disposable = url.download()
            .observeOn(AndroidSchedulers.mainThread())
            .subscribeBy(
                    onNext = { progress ->
                        //download progress
                        button.text = "${progress.downloadSizeStr()}/${progress.totalSizeStr()}"
                        button.setProgress(progress)
                    },
                    onComplete = {
                        //download complete
                        button.text = "Open"
                    },
                    onError = {
                        //download failed
                        button.text = "Retry"
                    }
            )
  

• Stop download:

    disposable.dispose()
  

• Get download file:

    val file = url.file()
    // or
    val file = task.file() 
    // use file...
  

• Delete download files:

    url.delete()
    // or
    task.delete()
  

Task Manager

• Get a TaskManager object:

    val taskManager = url.manager()
  

• Subscribe to status update:

   //keep this tag for dispose
   val tag = taskManager.subscribe { status ->
        // Receive download status
        when (status) {
            is Normal -> {}
            is Started -> {}
            is Downloading -> {}
            is Paused -> {}
            is Completed -> {}
            is Failed -> {}
            is Deleted -> {}
        }
    }
  

  progress can be obtained from status, when status is Failed, you can get throwable from it, which is the reason for the failure.

• Cancel status update subscription:

    //dispose tag
    taskManager.dispose(tag)
  

• Start download:

    taskManager.start()
  

• Stop download:

    taskManager.stop()
  

• Delete download:

    taskManager.delete()
  

• Get download file:

    val file = taskManager.file() 
    // use file...
  

Task Recorder

• Query single task:

     // Query task with url
     RxDownloadRecorder.getTask("url")
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { TaskEntity ->
               // TaskEntity                        
           }
  

• Query a batch of tasks:

     // Query task with urls
     RxDownloadRecorder.getTaskList("url1","url2","url3")
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { list ->
               // list of TaskEntity                        
           }
  

• Get a list of all downloads:

     RxDownloadRecorder.getAllTask()
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { list ->
               //list of TaskEntity                        
           }
  

• Query all download records for a state:

     // Query all Completed records
     RxDownloadRecorder.getAllTaskWithStatus(Completed())
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { list ->
               //list of TaskEntity                        
           }
  

• Paging query download record list:

     RxDownloadRecorder.getTaskList(page, pageSize)
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { list ->
               //list of TaskEntity                        
           }
  

• Paging query list of download records in a certain state:

     // Get the list of pages that have been Completed
     RxDownloadRecorder.getTaskListWithStatus(Completed(), page, pageSize)
           .observeOn(AndroidSchedulers.mainThread())
           .subscribeBy { list ->
               //list of TaskEntity                        
           }
  

  TaskEntity has a abnormalExit field, which is used to indicate whether the Task has paused by the APP forced close.

• Start All:

     RxDownloadRecorder.startAll()
  

• Stop All:

     RxDownloadRecorder.stopAll()
  

• Delete All:

     RxDownloadRecorder.deleteAll()
  

License

Copyright 2019 Season.Zlc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.