今天我在看喜马拉雅项目第35集的时候，按着视频里的代码写，但是最后播放的声音却是“海量知识，百万内容，尽在喜马拉雅app”这句话。根本播放不出相对于的内容

自己的项目跟着视频弄到第35集最后测试播放时却没有声音，代码是跟着视频打的，手机声音已经开到最大了。而我用下载下来的源码运行也播放不了（切换播放有时只会蹦出一句："以下内容，来自喜马拉雅"）

在B站看到【领券联盟】显示分类数据-安卓项目开发实战课程毕业设计课程的第18集,老师也是这样子写的，为什么我这里不能转换呢

喜马拉雅原视频35集，完全按照拉大锯老师的流程做下来的，但是播放器点击进入无声音，使用的是旧的SDK。之后看了一下论坛里的同学说是sdk新旧问题，我自己尝试修改了一下，但是出现了如下问题。

在【阳光沙滩】2020安卓开发自定义控件基础课程，自定义控件基础课程第34集，处理padding引发的问题。

喜马拉雅项目p35集测试播放中有一个play方法，就是用来播放列表音乐的那个，为什么我的手机没有播放出声音？是我代码有问题吗？目前没有报错，debug也成功运行到play方法那一行

@TOC并查集是啥子？并查集支持查找一个元素所属的集合，还可以将两个不在一个集合的元素合并。举个栗子，你有家谱去看看到底是不是亲戚。

在B站看到【领券联盟】显示分类数据-安卓项目开发实战课程毕业设计课程的第16集最后面的时候Log出现resultcodeis404，和老师的错误不一样啊！

刚开始是报so库找不到，我模拟器和手机都是x86，所以我上来阳光沙滩找了相关文章，添加了x86的文件夹，复制了so库过去，然后不报错了。但是我运行的时候报了以下错误截图~XmPlayerService代理setProxyNewnull不知道是不是这个原因播放一直没有声音，我用的sdk是大锯哥github仓库的

领券联盟第24的获取分类详

实数集与函数实数实数由有理数和无理数两部分组成有理数：可以用分数形式p/q（p,q为整数，q!=0）来表示。也可以用有限十进制小数或者无限十进制循环小数来表示。无理数：无限十进不循环小数为无理数。

Linux标准输出字符集新建文件mybash.shvim/etc/profile.d/mybash.shmybash.sh内容####标准输出字符集###########################

去年学校在“XX科技”做JAVA培训，主讲老师是一个35岁左右看起来比较凉快的老师，很喜欢吹他的丰功伟业，什么06年大学毕业来深圳写JAVA,08年金融危机bababab...说了很多。

并查集是一种树形结构，用于处理一些不交集的合并及查询问题。Find:确定元素属于哪一个子集。

DequeueBufferDuration=714600,QueueBufferDuration=678200,GpuCompleted=609184447295100, 2021-01-1716:35

打字35克是不会累的，而且越打越上头，配合打字声音，就是沙沙声。整体来说勉强对得住这个价格。

已经对照源码反复检查了代码几遍，但是还是不能播放出声音，代码没有运行错误，不知道是不是配置的原因，ndk{abiFilters"armeabi","armeabi-v7a","x86","mips"}在问答区看见有同学说添加这个，但是我添加了没有用，是因为这个SO库的版本问题吗？

领券联盟15集，请求数据返回到UI失败，没有显示内容，但是请求数据回来是成功的。

Attempttoinvokevirtualmethod'voidcom.example.himalaya.presenter.RecommendPresenter.registerViewCallback(com.example.himalaya.interfaces.IRecommendViewCallback)'onanullobjectreference搞不清楚了

playIndex);LogUtil.d(TAG,track.getTrackTitle());}3.如果初始的position值是0时，滑动页面没有问题，但如果position初始值是其他值的时候，比如：我点击第4

问题出现在：前端课程管理中心第42集原代码：@OverridepublicbooleanpreHandle(HttpServletRequestrequest,HttpServletResponseresponse

f4d8f65918d9878e1702d49a8cdf0183");mXimalaya.setPackid("com.ximalaya.qunfeng");mXimalaya.init(this,mAppSecret);}}}第20

拼接Url添加"_size×size.jpg"拿不回图片，试过很多size都不行，无法实现动态size加载图片，请问各位大佬还有什么其他方法吗

今天在做详情列表上拉加载结果提示的功能时，发现Toast在第一个节目的详情页面正常，没问题。但是点第二个节目进去，加载结束后，加载结果的Toast会提示两次。我就依次测试下去，发现第三个节目，加载结果就会提示三次......点击几个节目，就会弹几次Toast。然后我通过断点调试，发现List集合mCallbacks就会每次增加。尝试了好几次都没有解决问题，还请大神指导。万分感谢！

在up大的领券联盟第4集中底部导航之前我们已经完成了package的创建，没有的话，嗯，你自己去b站看吧。

刚开始写完UI布局运行后特惠界面一片空白，后面给onError方法加上setUpState（State.ERROR)后再运行，发现界面被判断成了ErrorLog里啥也没有，也没有报错。在Impl里给code打了个log，结果log里没有任何反应，找不到这条log。。我已经没有办法了，求大佬们救救。PS：多次重试，排除敲错的可能性，代码应该是和视频里一样的代码如下publicclassOnSellPagePresenterImplimplementsIOnSellPagePresenter{publicstaticfinalintDEFAULT_PAGE=1;privateintmCurrentPage=DEFAULT_PAGE;privateIOnSellPageCallbackmOnSellPageCallback=null;privatefinalApimApi;publicOnSellPagePresenterImpl(){Retrofitretrofit=RetrofitManager.getInstance().getRetrofit();mApi=retrofit.create(Api.class);}@OverridepublicvoidgetOnSellContent(){if(mIsLoading){return;}mIsLoading=true;//通知UI状态为加载中if(mOnSellPageCallback!=null){mOnSellPageCallback.onLoading();}//获取特惠内容StringtargetUrl=UrlUtils.getOnSellPageUrl(mCurrentPage);Call<OnSellContent>task=mApi.getOnSellPageContent(targetUrl);task.enqueue(newCallback<OnSellContent>(){@OverridepublicvoidonResponse(Call<OnSellContent>call,Response<OnSellContent>response){mIsLoading=false;intcode=response.code();LogUtils.d(this,"OnSellPagePresenterImplcode-->"+code);if(code==HttpURLConnection.HTTP_OK){OnSellContentresult=response.body();onSuccess(result);}else{onError();}}@OverridepublicvoidonFailure(Call<OnSellContent>call,Throwablet){onError();}});}privatevoidonSuccess(OnSellContentresult){if(mOnSellPageCallback!=null){try{if(isEmpty(result)){onEmpty();}else{mOnSellPageCallback.onContentLoadedSuccess(result);}}catch(Exceptione){e.printStackTrace();onEmpty();}}}privatebooleanisEmpty(OnSellContentcontent){intsize=content.getData().getTbk_dg_optimus_material_response().getResult_list().getMap_data().size();returnsize==0;}privatevoidonEmpty(){if(mOnSellPageCallback!=null){mOnSellPageCallback.onEmpty();}}privatevoidonError(){mIsLoading=false;if(mOnSellPageCallback!=null){mOnSellPageCallback.onError();}}@OverridepublicvoidreLoad(){//重新加载this.getOnSellContent();}//当前加载状态privatebooleanmIsLoading=false;@OverridepublicvoidLoaderMore(){if(mIsLoading){return;}mIsLoading=true;//加载更多mCurrentPage++;//去加载更多内容StringtargetUrl=UrlUtils.getOnSellPageUrl(mCurrentPage);Call<OnSellContent>task=mApi.getOnSellPageContent(targetUrl);task.enqueue(newCallback<OnSellContent>(){@OverridepublicvoidonResponse(Call<OnSellContent>call,Response<OnSellContent>response){mIsLoading=false;intcode=response.code();if(code==HttpURLConnection.HTTP_OK){OnSellContentresult=response.body();onMoreLoaded(result);}else{onMoreLoadedError();}}@OverridepublicvoidonFailure(Call<OnSellContent>call,Throwablet){onMoreLoadedError();}});}privatevoidonMoreLoadedError(){mIsLoading=false;mCurrentPage--;mOnSellPageCallback.onMoreLoadedError();}//加载更多结果，通知UI更新privatevoidonMoreLoaded(OnSellContentresult){if(mOnSellPageCallback!=null){if(isEmpty(result)){mOnSellPageCallback.onMoreLoaded(result);}else{mOnSellPageCallback.onMoreLoadedEmpty();}}}@OverridepublicvoidregisterViewCallback(IOnSellPageCallbackcallback){this.mOnSellPageCallback=callback;}@OverridepublicvoidunregisterViewCallback(IOnSellPageCallbackcallback){this.mOnSellPageCallback=null;}}部分Log如下2021-01-1914:03:29.4134280-4280/com.example.taobaounionD/HomePagerFragment:title-->推荐2021-01-1914:03:29.4134280-4280/com.example.taobaounionD/HomePagerFragment:materialId96602021-01-1914:03:29.4134280-4280/com.example.taobaounionD/CategoryPagePresenterImpl:homepageurl-->discovery/9660/12021-01-1914:03:29.4484280-4280/com.example.taobaounionD/HomePagerFragment:title-->食品2021-01-1914:03:29.4484280-4280/com.example.taobaounionD/HomePagerFragment:materialId96492021-01-1914:03:29.4484280-4280/com.example.taobaounionD/CategoryPagePresenterImpl:homepageurl-->discovery/9649/12021-01-1914:03:29.4604280-4280/com.example.taobaounionD/HomePagerFragment:headerHeight-->02021-01-1914:03:29.4604280-4280/com.example.taobaounionD/HomePagerFragment:headerHeight-->02021-01-1914:03:29.494170-170/?E/SELinux:avc: denied {find}forpid=4326uid=2000name=car_servicescontext=u:r:shell:s0tcontext=u:object_r:default_android_service:s0tclass=service_managerpermissive=02021-01-1914:03:29.4944326-4326/?W/cmd:Can'tfindservicecar_service2021-01-1914:03:30.500170-170/?E/SELinux:avc: denied {find}forpid=4337uid=2000name=car_servicescontext=u:r:shell:s0tcontext=u:object_r:default_android_service:s0tclass=service_managerpermissive=02021-01-1914:03:30.5004337-4337/?W/cmd:Can'tfindservicecar_service2021-01-1914:03:31.1134280-4280/com.example.taobaounionD/CategoryPagePresenterImpl:code--->2002021-01-1914:03:31.1264280-4280/com.example.taobaounionD/CategoryPagePresenterImpl:pageContent-->HomePagerContent{success=true,code=10000,message='获取成功.',data=[DataBean{category_id=0,category_name=null,click_url='//s.click.taobao.com/t?e=m%3D2%26s%3Dc%2BzH8mSDaPZw4vFB6t2Z2ueEDrYVVa64K7Vc7tFgwiGx5e2f4Vr4dVarO8KcXS7tJ7ATJSEv96%2BYzwUb1bbXppZwHxYkBYTUeP8T%2BYUOOiuIOBqu0asPv%2B%2B0Zv0h9YOvfU%2BmUCREsqEbby01aklwaAEacXMCAwuTXH5t%2B8W%2BDyXtB1mEdIYjtzZyBss0EfXtKhfzv1b%2BDcxxKmPmpIKZsA%3D%3D&scm=1007.19011.125573.0_9649&pvid=0728e44e-8036-4fdf-a1e6-b4faa503c566&app_pvid=59590_11.15.150.123_2960_1611036209829&ptl=floorId:9649;originalFloorId:9649;pv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ample.taobaounionD/CategoryPagePresenterImpl:code--->2002021-01-1914:03:32.0064280-4280/com.example.taobaounionD/CategoryPagePresenterImpl:pageContent-->HomePagerContent{success=true,code=10000,message='获取成功.',data=[DataBean{category_id=50008616,category_name=null,click_url='//s.click.taobao.com/t?e=m%3D2%26s%3DGuTRB4nq8gJw4vFB6t2Z2ueEDrYVVa64Dne87AjQPk9yINtkUhsv0NUV%2B5bkvEE4ii5Lljlv6tRm5nS0VR3oT0KAZCke%2BMGJxC%2FP4%2FZfPFbcQmwDRwHnn1oN8CPq4PKMZiqtwk9j5QPwdDmZ4my9rDNjG1bDPA0PBBckuaIBCt3xT6DAKLhWdIJpmveamUWe4zO2MiDcHh1SDYAhC1FIysYl7w3%2FA2kb&scm=1007.19011.125573.0_9660&pvid=8f519fc7-76f2-4acf-a405-8dfd97282935&app_pvid=59590_11.1.89.214_1152_1611036210712&ptl=floorId:9660;originalFloorId:9660;pvid:8f519fc7-76f2-4acf-a405-8dfd97282935;app_pvid:59590_11.1.89.214_1152_1611036210712&union_lens=lensId%3AMAPI%401611036210%400b0159d6_a901_177193db6cf_6031%4001',commission_rate='19.5',coupon_amount=40,coupon_click_url='//uland.taobao.com/coupon/edetail?e=3Sk83AEqBdgNfLV8niU3R5TgU2jJNKOfNNtsjZw%2F%2FoIpv0VMW3J1YZ6g7S%2FyjKSbNI65HA5bMPrqo%2F%2Bj4iZ55OmFKyIN1bVX65OH1WfUm95Uf2TiFOebe6EoGhHd2dAUeNO6HkfgVLGOeUcSvy%2FHYmF5qFnaO9996DeX2ucVKhvHjZlrd41oqCtXMc0NHG1Bz5JO%2BPQ43%2B5lBRYM90QVRw%3D%3D&&app_pvid=59590_11.1.89.214_1152_1611036210712&ptl=floorId:9660;app_pvid:59590_11.1.89.214_1152_1611036210712;tpp_pvid:8f519fc7-76f2-4acf-a405-8dfd97282935&union_lens=lensId%3AMAPI%401611036210%400b0159d6_a901_177193db6cf_6031%4001',coupon_end_time='1611071999000',coupon_info=null,coupon_remain_count=86000,coupon_share_url='//uland.taobao.com/coupon/edetail?e=3Sk83AEqBdgNfLV8niU3R5TgU2jJNKOfNNtsjZw%2F%2FoIpv0VMW3J1YZ6g7S%2FyjKSbNI65HA5bMPrqo%2F%2Bj4iZ55OmFKyIN1bVX65OH1WfUm95Uf2TiFOebe6EoGhHd2dAUeNO6HkfgVLGOeUcSvy%2FHYmF5qFnaO9996DeX2ucVKhvHjZlrd41oqCtXMc0NHG1Bz5JO%2BPQ43%2B5lBRYM90QVRw%3D%3D&&app_pvid=59590_11.1.89.214_1152_1611036210712&ptl=floorId:9660;app_pvid:59590_11.1.89.214_1152_1611036210712;tpp_pvid:8f519fc7-76f2-4acf-a405-8dfd97282935&union_lens=lensId%3AMAPI%401611036210%400b0159d6_a901_177193db6cf_6031%4001',coupon_start_fee='69.0',coupon_start_time='1610812800000',coupon_total_count=100000,item_description='来自西藏的传统特产——风干手撕牛肉干',item_id=615111457938,level_one_category_id=50002766,level_one_category_name='零食/坚果/特产',nick='礼云阁旗舰店',pict_url='//gw.alicdn.com/bao/uploaded/i1/2200812029962/O1CN01C6QZ1a2NSeCN64glY_!!0-item_pic.jpg',seller_id=2200812029962,shop_title='礼云阁旗舰店',small_images=com.example.taobaounion.model.domain.HomePagerContent$DataBean$SmallImagesBean@bc02a2f,title='礼云阁风干牛肉干正宗西藏特产香辣麻辣藤花椒手撕牛肉干零食250g',user_type=1,volume=155100,zk_final_price='69.9'},DataBean{category_id=50010422,category_name=null,click_url='//s.click.taobao.com/t?e=m%3D2%26s%3DwFe8I%2BOonkpw4vFB6t2Z2ueEDrYVVa64Dne87AjQPk9yINtkUhsv0NUV%2B5bkvEE4ii5Lljlv6tRm5nS0VR3oT0KAZCke%2BMGJxC%2FP4%2FZfPFbcQmwDRwHnn1oN8CPq4PKMZiqtwk9j5QPwdDmZ4my9rFhBpgx27xgP08TC8rEy2O9bRsQ%2F7eiVfZ%2BUPu%2BYVQzqSdChf3U3iXY%2B5QowgvHJPA%3D%3D&scm=1007.19011.125573.0_9660&pvid=8f519fc7-76f2-4acf-a405-8dfd97282935&app_pvid=59590_11.1.89.214_1152_1611036210712&ptl=floorId:9660;originalFloorId:9660;pvid:8f519fc7-76f2-4acf-a405-8dfd97282935;app_pvid:59590_11.1.89.214_1152_1611036210712&union_lens=lensId%3AMAPI%401611036210%400b0159d6_a901_177193db6cf_6032%4001',commission_rate='19.5',coupon_amount=20,coupon_click_url='//uland.taobao.com/coupon/edetail?e=3r5OOoF0%2FHANfLV8niU3R5TgU2jJNKOfNNtsjZw%2F%2FoJ5a4pW%2BUzNNYeafmcYgriW3spAD%2FL8ORl0HqCteZPMasuRTiT9oEhVZV8pr6FWc0NT2LHwmZaG3y%2B3XDqtejFumMHpNfYdHdBwWfUaU7r%2BdMHdg8oYVc%2FsB3IEI%2FtGZdTSBjM3vXy9T041UyeSsrqpDNJ7jXMyFwklM1ZJHcLCJg%3D%3D&&app_pvid=59590_11.1.89.214_1152_1611036210712&ptl=floorId:9660;app_pvid:59590_11.1.89.214_1152_1611036210712;tpp_pvid:8f519fc7-76f2-4acf-a405-8dfd97282935&union_lens=lensId%3AMAPI%401611036210%400b0159d6_a901_177193db6cf_6032%4001',coupon_end_time='1611158399000',coupon_info=null,coupon_remain_count=70000,coupon_share_url='//uland.taobao.com/coupon/edetail?e=3r5OOoF0%2FHANfLV8niU3R5TgU2jJNKOfNNtsjZw%2F%2FoJ5a4pW%2BUzNNYeafmc2021-01-1914:03:32.0064280-4280/com.example.taobaounionD/HomePagerFragment:Loopersize-->52021-01-1914:03:32.0064280-4280/com.example.taobaounionD/HomePagerFragment:url-->//gw.alicdn.com/bao/uploaded/i1/2207812169677/O1CN019LlUdE2LM7Nwp4z0s_!!2207812169677-0-picasso.jpg2021-01-1914:03:32.0494280-4280/com.example.taobaounionD/HomePagerFragment:headerHeight-->4672021-01-1914:03:32.1444280-4280/com.example.taobaounionI/chatty:uid=10192(com.example.taobaounion)identical4lines2021-01-1914:03:32.16328232-28319/?I/PeriodicStatsRunner:PeriodicStatsRunner.call():180call()2021-01-1914:03:32.16328232-28319/?I/PeriodicStatsRunner:PeriodicStatsRunner.call():184NosubmitPeriodicStatssinceinputstarted.2021-01-1914:03:32.266382-382/?I/perfetto:probes_producer.cc:329 Producerstop(id=1123)2021-01-1914:03:32.273383-383/?I/perfetto:ng_service_impl.cc:1948Tracingsession1123ended,totalsessions:02021-01-1914:03:32.277382-382/?I/perfetto:ftrace_procfs.cc:183  disabledftrace2021-01-1914:03:32.281393-4276/?I/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我在学习"四大组件之广播"第八集,两分四十八秒的时候,老师说:"点击事件有四种写法"回头找了找却没有找到.请问都有哪四种写法?或者说,老师说的前面讲过,具体"前面"指的是哪一集视频?