首页 > 软件编程 > Android > Android下载m3u8视频

Android实现下载m3u8视频文件问题解决

2023-01-28 17:27:52 作者：FranzLiszt1847

这篇文章主要介绍了Android实现下载m3u8视频文件，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习吧

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);
    }
    @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",task.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());
                        downloadReceiver.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:failed
     * 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");
                break;
            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");
                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视频内容请搜索脚本之家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脚本之家！

您可能感兴趣的文章:

Android 边播边缓存的实现(MP4 未加密m3u8)