草庐IT

java - Realm findAllSorted by field of a filed

另一个关于Realm的问题。我有这个结构;A类有一个具有字符串名称的B类。我想按名称为“xy”的Bb对A类列表进行排序;所以这是我尝试过但不起作用的方法。realm.where(A.class).findAllSorted("b.name",true);这表示没有字段B.name。有什么想法可以让它发挥作用吗?谢谢。 最佳答案 Realm还不支持按链接排序。有一个openissue跟踪这个。这是Realm支持该功能之前的解决方法:classAextendsRealmObject{privateBb;//Storingtheb.nam

报错:HttpMessageNotReadableException: JSON parse error: Unexpected end-of-input

问题:测试接口发送请求时后端报错:org.springframework.http.converter.HttpMessageNotReadableException:JSONparseerror:Unexpectedend-of-input:expectedclosemarkerforObject(startmarkerat[Source:(PushbackInputStream);line:1,column:1]);nestedexceptioniscom.fasterxml.jackson…出现这个错误的时候postman传的参数格式是这样子的:后端代码接收参数是:分析:因为其实这个接口

java - Dagger 2 : error while getting a multiple instances of same object with @Named

我怎样才能得到像游标一样返回类型相同的多个实例例如:-Module@CursorScopepublicclassCursorModule{@ProvidesCursorprovideSongCursor(@Named("Song")Musicianmusician){returnmusician.getApplicationContext().getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,newString[]{BaseColumns._ID,MediaStore.Audio.AudioCo

android - Android : Interpreting the results of this command 中的 dumpsys cpuinfo

我正在查看以下命令“adbshelldumpsyscpuinfo”的输出,我想知道这些报告的值是否是之前时间的平均值?D:\Android_Dev\Android_sdk\platform-tools>adbshelldumpsyscpuinfoLoad:4.03/3.43/2.44CPUusagefrom23770msto16630msago:58%1844/logd:58%user+0%kernel/faults:3minor50%3895/com.google.android.wearable.app:ui:41%user+9.3%kernel/faults:1798minor2

android - 错误 : invalid resource type 'attr' for parent of style

将我的Android项目升级到Studio3.0.1和Gradle3.0后,我在构建过程中遇到了一个问题:MAFLogonUI-3.15.6.aar\\46f903e9d58266c453b893b9caa03deb\\res\\values\\values.xml","position":{"startLine":456,"startColumn":4,"startOffset":32855,"endLine":459,"endColumn":12,"endOffset":33105}}],"original":"","tool":"AAPT"}我认为问题是由于此处引用的问题Andr

Android GMS 库抛出 IllegalArgumentException : Unexpected number of IObjectWrapper declared fields: 3

开始在我们的应用程序中看到此崩溃:E/AndroidRuntime:FATALEXCEPTION:mainProcess:com.example.debug,PID:25873java.lang.IllegalArgumentException:UnexpectednumberofIObjectWrapperdeclaredfields:3atpvq.a(:com.google.android.gms@11951440:9)atcom.google.android.gms.maps.internal.CreatorImpl.newMapViewDelegate(:com.google.

java.lang.NoClassDefFoundError : Failed resolution of: Ljava/time/LocalDate; error 错误

什么都试过了,还是没解决这是我的代码:publicString[]getWeekDays(){LocalDatetoday=LocalDate.now();LocalDatemonday=today;LocalDatetue=today;LocalDatewed=today;LocalDatethur=today;LocalDatefri=today;LocalDatesat=today;LocalDatesunday=today;while(sunday.getDayOfWeek()!=DayOfWeek.SUNDAY){sunday=sunday.minusDays(1);}whi

android - Parse.com 身份验证错误 : Unable to respond to any of these challenges: {oauth=www-authenticate: OAuth realm ="https://api.twitter.com"}

将ParseAndroidSDK升级到版本1.4.1后,Twitter登录停止工作。当我尝试使用Twitter登录时:ParseTwitterUtils.initialize(Constants.TWITTER_CONSUMER_KEY,Constants.TWITTER_CONSUMER_SECRET);ParseTwitterUtils.logIn(activity,newLogInCallback(){@Overridepublicvoiddone(ParseUserparseUser,ParseExceptione){if(e==null){//Success}else{//E

android - android 中的自定义加载(错误 : expected resource of type drawable )

有人可以推荐在android项目中自定义加载的最佳方法吗。我用这个post.我的代码:_readNewsAsyncTaskManager=newReadNewsAsyncTaskManager();_loadigIcon.setImageResource(R.anim.loading_animation);//Error*loadingViewAnim=(AnimationDrawable)_loadigIcon.getBackground();//ThislineistostartAsynTaskonlywhenOnCreateMethodgetcompleted,SoLoading

1418 - This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and bin

项目场景:在MySQL中创建函数报错问题描述1418-ThisfunctionhasnoneofDETERMINISTIC,NOSQL,orREADSSQLDATAinitsdeclarationandbinaryloggingisenabled(youmightwanttousethelesssafelog_bin_trust_function_creatorsvariable)`createfunctionaab()returnsintbeginreturn1+1;end;原因分析:原因是开启了log-bin日志,创建函数时,函数中没有包含DETERMINISTIC,NOSQL和READS