Android实现下载m3u8视频文件问题解决

2023-01-29 10:59 开发作者： FranzLiszt1847

效果图

简介

Aria

下载器采用开源框架Aria

github

中文文档

导入Aria

implementation 'me.laoyuyu.aria:core:3.8.16'
annotationProcessor 'me.laoyuyu.aria:compiler:3.8.16'
implementation 'me.laoyuyu.aria:m3u8:3.8.16'

介绍

service在Appliaction中启动，即启动app即启动service并且service只启动一次，后序通过单例binder去调用服务

启动Service

在Application中默认启动Service

private void bindService(){
        DownloadService.bindService(this, new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
            }
            @Override
            public void onServiceDisconnected(ComponentName name) {
                downloadService = null;
            }
        });
    }

DownloadService

用于Aplication调用起服务

public static void bindService(Context context, ServiceConnection connection){
        Intent intent = new Intent(context, DownloadService.class);
        context.bindService(intent, connection, Service.BIND_AUTO_CREATE);
    }

注册下载器

@Override
    public void onCreate() {
        super.onCreate();
        Aria.download(this).register();
        Log.d("DownloadService","create service");
    }

若上次有未下载完成的视频，则恢复下载，并将binder赋给另一个单例binder，后续使用binder进行具体下载事项

@Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.d("DownloadService","bind service");
        long taskId = (long)SP.getInstance().GetData(BaseApplication.getContext(),"lastDownloadID",0L);
        if (taskId != 0L){
            List<DownloadEntity> entityList = Aria.download(this).getAllNotCompleteTask();
            if (entityList != null){
                HttpNormalTarget target = Aria.download(this).load(taskId);
                if (target.getTaskState() != STATE_COMPLETE){
                    target.m3u8VodOption(DownloadBinder.getInstance().getOption());
                    target.resume();
                    Log.d("DownloadService","resume download");
                } else {
                    HttpNormalTarget resume =  Aria.download(this).load( entityList.get(0).getId());
                    resume.m3u8VodOption(DownloadBinder.getInstance().getOption());
                    if ((resume.getTaskState() == STATE_FAIL) || (resume.getTaskState() == STATE_OTHER)){
                        resume.resetState();
                        Log.d("DownloadService","resetState");
                    }else {
                        resume.resume();
                        Log.d("DownloadService","resumeState");
                    }
                }
            }
        }
        return DownloadBinder.getInstance();
    }

注销aria下载器和解除binder绑定

 @Override
    public boolean onUnbind(Intent intent) {
        Log.d("DownloadService","unbind service");
        return super.onUnbind(intent);
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        Aria.download(this).unRegister();
        Log.d("DownloadService","service onDestroy");
    }

下载回调

然后将Aria下载器的回调在进行一次中转，回调至单例binder，后面在下载就不需要binder服务，直接调用单例binder即可

    @Download.onNoSupportBreakPoint public void onNoSupportBreakPoint(DownloadTask task) {
        Log.d("DownloadService","该下载链接不支持断点");
       // DownloadBinder.getInstance().onTaskStart(task);
    }
    js@Download.onTaskStart public void onTaskStart(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":开始下载");
        DownloadBinder.getInstance().onTaskStart(task);
    }
    @Download.onTaskStop public void onTaskStop(DownloadTask task) {
        Log.d("DownloadService",tjsask.getDownloadEntity().getFileName() +":停止下载");
        DownloadBinder.getInstance().onTaskStop(task);
    }
    @Download.onTaskCancel public void onTaskCancel(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":取消下载");
        DownloadBinder.getInstance().onTaskCancel(task);
    }
    @Download.onTaskFail public void onTaskFail(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":下载失败");
        DownloadBinder.getInstance().onTaskFail(task);
    }
    @Download.onTaskComplete public void onTaskComplete(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":下载完成");
        DownloadBinder.getInstance().onTaskComplete(task);
    }
    /**
     * @param e 异常信息
     */
    @Download.onTaskFail void taskFail(DownloadTask task, Exception e) {
        try {
            DownloadBinder.getInstance().taskFail(task,e);
            ALog.d("DownloadService", task.getDownloadEntity().getFileName() +"error:"+ALog.getExceptionString(e));
        }catch (Exception ee){
            ee.printStackTrace();
        }
    }
    @Download.onTaskRunning public void onTaskRunning(DownloadTask task) {
        Log.d("DownloadService","pre = "+task.getPercent()+"   "+"speed = "+ task.getConvertSpeed());
        DownloadBinder.getInstance().onTaskRunning(task);
    }
}

回调接口

将服务中的Aria回调，回调至单例binder中

public interface ServiceCallback {
    void onTaskStart(DownloadTask task);
    void onTaskStop(DownloadTask task);
    void onTaskCancel(DownloadTask task);
    void onTaskFail(DownloadTask task);
    void onTaskComplete(DownloadTask task);
    void onTaskRunning(DownloadTask task);
    void taskFail(DownloadTask task, Exception e);
}

单例Binder

构造单例

public class DownloadBinder extends Binder implements ServiceCallback {
 private static DownloadBinder binder;
    private DownloadBinder() {
    }
    public static DownloadBinder getInstance() {
        if (binder == null) {
            binder = new DownloadBinder();
            downloadReceiver = Aria.download(BaseApplication.getContext());
        }
        return binder;
    }

下载

将下载信息传入，并以视频type+id+name等构件下载文件夹名称，确保唯一性，然后通过配置Aria Option，使其切换至m3u8文件下载模式，具体配置文件还可配置下载速度、最大下载文件数量、线程数等等。

Aria自带数据库，可通过其数据库保存一些数据，但读取数据较慢

    public void startDownload(DownloadBean downloadBean) {
        if (downloadBean == null) return;
        String locationDir = FileUtils.getInstance().mainCatalogue();
        String name = downloadBean.getVideoType()+downloadBean.gettId() + downloadBean.getsId() + downloadBean.geteId();
        String subFile = FileUtils.getInstance().createFile(locationDir, name);
        String path = subFile + File.separator + name + ".m3u8";
        Log.d("DownloadService", "start download");
        boolean isExist = IsExist(path);
        if (isExist) {
            Log.d("DownloadService", "exist same item");
            if (repeatTaskId != 0) {
                if (Aria.download(this).load(repeatTaskId).getTaskState() != STATE_RUNNING) {
                    if (downloadReceiver.load(repeatTaskId).getEntity().getRealUrl().equals(downloadBean.getVideoUrl())) {
                        downloadReceiver.load(repeatTaskId).m3u8VodOption(DownloadBinder.getInstance().getOption());
                        downloadReceiver.load(repeatTaskId).resume();
                    } else {
                        downloadReceiver.load(repeatTaskId).m3u8VodOption(DownloadBinder.getInstance().getOption());
                        downloadRe编程ceiver.load(repeatTaskId).updateUrl(downloadBean.getVideoUrl()).resume();
                    }
                }
                Log.d("DownloadService", "resume exist same item");
                return;
            }
        }
        HttpBuilderTarget target = downloadReceiver.load(downloadBean.getVideoUrl())
                .setFilePath(path)
                .ignoreFilePathOccupy()
                .m3u8VodOption(getOption());
        List<DownloadEntity> downloadEntityList = downloadReceiver.getDRunningTask();
        if (downloadEntityList == null) {
            repeatTaskId = target.create();
        } else {
            repeatTaskId = target.add();
        }
        try {
            repeatTaskId = target.getEntity().getId();
            downloadBean.setTaskId(repeatTaskId);
            SP.getInstance().PutData(BaseApplication.getContext(),"lastDownloadID",repeatTaskId);
            target.setExtendField(new Gson().tojson(downloadBean)).getEntity().save();
        }catch (NullPointerException e){
            e.printStackTrace();
        }
    }

辐射

再一次将service回调的接口回调至binder的接口，通过EventBus辐射至外部，通过一层层封装，在外部监听当前文件下载状态，只需通过监听EventBus事件即可

 /**
     * download status
     * 0:prepare
     * 1:starting
     * 2:pause
     * 3:cancel
     * 4:faile开发者_Pythond
     * 5:completed
     * 6:running
     * 7:exception*/
    @Override
    public void onTaskStart(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(1,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void onTaskStop(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(2,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void onTaskCancel(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(3,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void onTaskFail(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(4,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void onTaskComplete(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(5,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void onTaskRunning(DownloadTask task) {
        EventBus.getDefault().postSticky(new DownloadStatusBean(6,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
    }
    @Override
    public void taskFail(DownloadTask task, Exception e) {
        try {
            EventBus.getDefault().postSticky(new DownloadStatusBean(4,task.getDownloadEntity().getId(), task.getConvertSpeed(), task.getPercent(),task.getConvertFileSize(),task.getFilePath()));
        }catch (NullPointerException ee){
            ee.printStackTrace();
        }
    }
}

创建下载实例

一句话我们就可以实现视频下载，然后后天服务自动回调给binder,然后binder回调给EventBus

 DownloadBean bean = new DownloadBean(0L,m_id,"","",sourceBean.getLink(),detailBean.getCover(),detailBean.getTitle(),"","","movie","",0);
  DownloadBinder.getInstance().startDownload(bean);

监听下载状态

然后只需要在需要更新界面的地方注册EventBus即可，通过封装，不同的类做不同的事情，将数据处理和UI更新进行隔离，可以提高代码阅读和执行效率

 /**
     * download status
     * 0:prepare
     * 1:starting
     * 2:pause
     * 3:cancel
     * 4:failed
     * 5:completed
     * 6:running
     * 7:exception*/
    /**
     * 下载item状态监听*/
    @Subscribe(threadMode = ThreadMode.MAIN, sticky = true)
    public void OnEvent(DownloadStatusBean bean) {
        taskID = bean.getTaskID();
        switch (bean.getStatus()) {
            case 1:
                getRunningItem();
                Log.d("DownloadService", "status start");
                break;
            case 2:
                updateStatus(bean);
                Log.d("DownloadService", "status pause");
                breakpython;
            case 3:
                if ((index == -1) && (beanList.size() > 0)){
                    index = 0;
                }
                Log.d("DownloadService", "status cancel"+bean.getTaskID());
                break;
            case 4:
                //update url
                failCount++;
                if (failCount >= 3){
                    failedReconnect(bean);
                    failCount = 0;
                    isRunning = true;
                    Log.d("DownloadService", "status fail in");
                }
                Log.d("DownloadService", "status fail");
    编程客栈            break;
            case 5:
                removeDownloadBead(bean.getTaskID());
                startDownload();
                Log.d("DownloadService", "status complete");
                break;
            case 6:
                if (isRunning) {
                    getRunningItem();
                }
                updateCurItem(bean);
                Log.d("DownloadService", "status running: "+index);
                break;
        }
    }

到此这篇关于android实现下载m3u8视频文件问题解决的文章就介绍到这了,更多相关Android下载m3u8视频内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！

继续阅读：Android m3u8 Android下载m3u8视频

Android实现下载m3u8视频文件问题解决

目录

效果图

简介

Aria

导入Aria

介绍

启动Service

DownloadService

下载回调

回调接口

单例Binder

构造单例

下载

辐射

创建下载实例

监听下载状态

更多精彩内容

精彩评论

最新开发

如何实现Python编写的图形界面可以自由拖动

mysql字符集引起的java.sql.SQLException:Incorrect string value:问题

解决Feign异步调用丢失上下文问题

python模拟重载初始化函数的方法详解

SQL注入攻击及其在SpringBoot中使用MyBatisPlus的防范策略的方法

开发排行榜

springboot后端存储富文本内容的思路与步骤(含图片内容)

PyCharm运行python测试,报错“没有发现测试”/“空套件”的解决

return base64.b64encode(b).decode(

基于C语言实现钻石棋游戏的示例代码

Sublime Text 3解决中文乱码问题（实测可用）