Android實(shí)現(xiàn)下載m3u8視頻文件問(wèn)題解決

更新時(shí)間：2023年01月28日 17:27:51 作者：FranzLiszt1847

這篇文章主要介紹了Android實(shí)現(xiàn)下載m3u8視頻文件，文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)吧

效果圖

簡(jiǎn)介

Aria

下載器采用開(kāi)源框架Aria

github

中文文檔

導(dǎo)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'

介紹

service在Appliaction中啟動(dòng)，即啟動(dòng)app即啟動(dòng)service并且service只啟動(dòng)一次，后序通過(guò)單例binder去調(diào)用服務(wù)

啟動(dòng)Service

在Application中默認(rèn)啟動(dòng)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調(diào)用起服務(wù)

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

注冊(cè)下載器

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

若上次有未下載完成的視頻，則恢復(fù)下載，并將binder賦給另一個(gè)單例binder，后續(xù)使用binder進(jìn)行具體下載事項(xiàng)

@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();
    }

注銷aria下載器和解除binder綁定

 @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");
    }

下載回調(diào)

然后將Aria下載器的回調(diào)在進(jìn)行一次中轉(zhuǎn)，回調(diào)至單例binder，后面在下載就不需要binder服務(wù)，直接調(diào)用單例binder即可

    @Download.onNoSupportBreakPoint public void onNoSupportBreakPoint(DownloadTask task) {
        Log.d("DownloadService","該下載鏈接不支持?jǐn)帱c(diǎn)");
       // DownloadBinder.getInstance().onTaskStart(task);
    }
    @Download.onTaskStart public void onTaskStart(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":開(kāi)始下載");
        DownloadBinder.getInstance().onTaskStart(task);
    }
    @Download.onTaskStop public void onTaskStop(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":停止下載");
        DownloadBinder.getInstance().onTaskStop(task);
    }
    @Download.onTaskCancel public void onTaskCancel(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":取消下載");
        DownloadBinder.getInstance().onTaskCancel(task);
    }
    @Download.onTaskFail public void onTaskFail(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":下載失敗");
        DownloadBinder.getInstance().onTaskFail(task);
    }
    @Download.onTaskComplete public void onTaskComplete(DownloadTask task) {
        Log.d("DownloadService",task.getDownloadEntity().getFileName() +":下載完成");
        DownloadBinder.getInstance().onTaskComplete(task);
    }
    /**
     * @param e 異常信息
     */
    @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);
    }
}

回調(diào)接口

將服務(wù)中的Aria回調(diào)，回調(diào)至單例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);
}

單例Binder

構(gòu)造單例

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;
    }

下載

將下載信息傳入，并以視頻type+id+name等構(gòu)件下載文件夾名稱，確保唯一性，然后通過(guò)配置Aria Option，使其切換至m3u8文件下載模式，具體配置文件還可配置下載速度、最大下載文件數(shù)量、線程數(shù)等等。

Aria自帶數(shù)據(jù)庫(kù)，可通過(guò)其數(shù)據(jù)庫(kù)保存一些數(shù)據(jù)，但讀取數(shù)據(jù)較慢

    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();
        }
    }

輻射

再一次將service回調(diào)的接口回調(diào)至binder的接口，通過(guò)EventBus輻射至外部，通過(guò)一層層封裝，在外部監(jiān)聽(tīng)當(dāng)前文件下載狀態(tài)，只需通過(guò)監(jiān)聽(tīng)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();
        }
    }
}

創(chuàng)建下載實(shí)例

一句話我們就可以實(shí)現(xiàn)視頻下載，然后后天服務(wù)自動(dòng)回調(diào)給binder,然后binder回調(diào)給EventBus

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

監(jiān)聽(tīng)下載狀態(tài)

然后只需要在需要更新界面的地方注冊(cè)EventBus即可，通過(guò)封裝，不同的類做不同的事情，將數(shù)據(jù)處理和UI更新進(jìn)行隔離，可以提高代碼閱讀和執(zhí)行效率

 /**
     * download status
     * 0:prepare
     * 1:starting
     * 2:pause
     * 3:cancel
     * 4:failed
     * 5:completed
     * 6:running
     * 7:exception*/
    /**
     * 下載item狀態(tài)監(jiān)聽(tīng)*/
    @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;
        }
    }

到此這篇關(guān)于Android實(shí)現(xiàn)下載m3u8視頻文件問(wèn)題解決的文章就介紹到這了,更多相關(guān)Android下載m3u8視頻內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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