现在有很多Android开发的小伙伴使用Kotlin开发应用了,今天小编在使用Kotlin开发的时候遇到个问题,就是在TextView赋值时候出现了java. Comment on attachment 8411362 Never pass an empty image path to Picasso Note to release managers: I'm requesting uplift for a series of Firefox Hub bugs. How to get some images with StartActivityForResult? I do not understand how to use StartActivityForResult. 0 BY-SA 版权协议,转载请附上原文出处链接和本声明。. Have you encountered the infamous "must not be null" errors in Android Development? Whilst there are many possibilities for fixing this error, one major overlooked fix / behaviour of layout and fix is outlined below. Finally I wanted to do something with it by integrating it to an Android phone. The problem is that I have ~20 web requests all with the user_id path parameter. I make birthday wish app so message must be. ## Step 1 - Add the mixpanel-android library as a gradle dependency: We publish builds of our library to the Maven central repository as an. NULL - For null. So please be patient with me. Setup and Prerequisites. The previous release enabled AAPT2 by default for new projects. @grabbou, yes, I use monorepo setup with yarn workspaces. The MainActivity should only consist of the onCreate() method. Newest Nessus Plugins from Tenable. In MySQL, when you define a column as NOT NULL, it doesn't mean "this column must have a value. You must follow the Unsplash API Guidelines when using the Unsplash API in your application. Almost all apps need certain permissions to run on Android, and we use these permissions to run features in the app. It is "fixed" in version 1. Parcelable type. iOS/Android SDK Work with the SDK. Often, you must also call into non-Kotlin code when writing an Android app, as most Android APIs are written in the Java programming language. That's great, the only problem with this is that most non-trivial database implementations will contain more than one table. As you can see we are adding javax annotations, compiler, the runtime library and the apt plugin, which is necessary, otherwise the dagger annotation processor might not work properly: I encountered problems on Android Studio. Android tutorial about working with Retrofit HTTP library. " It doesn't mean "this column can't be blank. This article will tell you how to use java. // So as long as the result is not null,. getAttributions() - The attributions that must be shown to the user, if data from the place is used. Your phone has been blocked up for safety reasons” notification from a law enforcement agency (FBI, Australian Federal Police, Metropolitan Police, U. You can fetch the application data via it and once the application is started by the user, it can present fresh data to the user. Updating to Android Studio 3. The two are different. TYPE_NULL); I am intercepting and processing all soft keystrokes using my own soft keypad adapter, hence do not desire any Android soft keypad capability. Let it be Tutorials, Update Change Logs, Projects that users have created or anything else, you will find it here. According to the Android NDK C++ Library Support, LLVM's libc++ will be the only STL: LLVM's libc++ is the C++ standard library that has been used by the Android OS since Lollipop, and in the future will be the only STL available in the NDK. What is a theme? Well, Android's UI infrastructure is similar to Swing or HTML in that it tries to accommodate components whose size is not known until runtime. It's the icing on top of your cake (or whipped cream on top of your Android Pie) of despair. This differs from getBinding(View) in that findBinding takes any view in the layout and searches for the binding associated with the root. Android Phone Not Connecting to WiFi. Like in the 2. In Android, there are several ways to store persistent data. app - android-ndk-r10c-dar. Input image guidelines. This project wouldn't be possible without rovo's Xposed framework, so huge kudos to him. If there is no binding, null will be returned. It is "fixed" in version 1. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. You can always test whether an object is null with x == null or x != null and ought not to use the equals method, which will throw an Exception if called on a null reference. 3 (ROM close enough to AOSP). In this tutorial we will make a TCP Connection. Receiving data will be particularly troublesome. Follow RSS feed Like. NET Forums / General ASP. bin file on Mac OS X Test by: - Mac OS X Yosemite - Archive Utility. 0+) Android 6. Testing is beyond the scope of this codelab. The C++ generator needs to know what header defines the C++ parcelable. We take a look at the two leading smartphone operating systems. persistence. *Tri Star must be given the opportunity to beat the first bona fide competitive offer on any new vehicle. The user must then select a single app from which to pick a file and the selected app must provide a user interface for the user to browse and pick from the available files. Then by selecting the show menu item, the images will be displayed in slideshow view. 6m developers to have your questions answered on Js Error Sys. When run on versions of the platform where this feature does not exist the activity will be launched normally. The issue generally happens when you install a custom ROM, update your Android device or manually modify the IMEI. null という値は、オブジェクトの値が存在しないことを表します。 Android webview Android 版 Chrome repeat count must be less than. In android, we must need to implement this method, in case if we don’t need to allow binding, then we should return NULL. Finally I wanted to do something with it by integrating it to an Android phone. properties。在文件末尾添加. We are working on some scripts to automate vCloud Director tasks, a few of the functions within the script do not work and we receive an error: Exception calling "UpdateServerData" with "0" argument(s): "Argument 'uriTemplate' must not be null. Below are the Technical guidelines and how this library follows and implements them. Returns the value of the requested column as a String. Picasso android Target must not be null. VPNs you usually pay for, and even the ones that SAY they don't track often don't know how NOT to be tracked. The steps described for the newer Android devices below are generally very similar, if one set of instructions doesn't work try another as the Android factory reset processes for the Android phones for the last few years are all very similar if not exactly the same. GCM is a free service that helps developers send data from servers to their Android applications on Android devices, and upstream messages from the user's device back to the cloud. dialect' not set even though all the configuration seemed fine to me. Android ExpandableListView is a view that shows items in a vertically scrolling two-level list. [Android] Argument for @NotNull parameter 'aFileName' of com/intellij/openapi/util/io/FileUtil. 3 is strongly encouraged. If not, an IllegalStateException will be thrown at runtime. Retrieving Location with LocationServices API. application plugin is applied. Tutorial about connecting android with php, mysql. The corresponding entry must specify the android:authorities attribute which allows identifying the content provider. Run your program in the debugger and when it fails, VS will show you the line it found the problem on. Part 2: Syntax, Null Safety and more… In this Part we are going to focus on understanding some basic syntax of the language and also adding all the code that we need for the MainActivity. NET AJAX + Ajax Control Toolkit (ACT) / Value must not be null Value must not be null [Answered] RSS 6 replies. that is being caused in most Android Studio Projects after Android Studio 3. This is the trick. Unpack the downloaded zip file. Attachments: Up to 2 attachments (including images) can be used with a maximum of 524. For example, in a trouble ticket, you may write The return value of foo() should not be null if it can update the database successfully. This Android tutorial is to explain what a fused location provider is and how to use it to get the location using a sample Android application. apkData must not be null. It is very lightweight database that comes with Android OS. If you are new to the community or like to welcome new members, we have a forum for just that! You will also find other forums such as Classifieds, Contests & Giveaways, FAQ's, Announcements and even a section to provide feedback!. A string that uniquely identifies the host the build was built on, in human-readable format. So there are times pointers are what you must use, which brings you back to all that null-checking and the recurring fear of a null pointer exception. Hi team! I'm beginner in xamarin's projects. Keep in mind that Android controls the way the permissions are named, and the way they’re named doesn’t necessarily reflect the way the Facebook app uses them. How to load new content in each page after swipe (with PageAdapter in Android) I'm trying to write a PageAdapter, which loads the next page after each swipe (no matter in which direction)After each swipe a new content should be shown. IPC calls are synchronous. Explore 19 apps like hoverwatch, all suggested and ranked by the AlternativeTo user community. With the latest news from Google I/O comes the new and upgraded Firebase. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. is used when action keys are tied to specific suggestions. The main fixes we need are in bugs at the end of the series, but trying to rebase those patches proved difficult and risky, so I think we should just uplift the dependecies. 11 or earlier versions do not officially support AndroidX. I am working on an android application which contains modules like offline mapsI want to download map (data set) of a particular area based on user input then user can select two locations start and destination and i need to draw routes on the map. Volley Tutorial With Example In Android Studio. that it gets set to null before being passed. Per the documentation of cursor. administrator. Volley is a HTTP library developed by Google and was first introduced during Google I/O 2013. ID An identifier chosen by the device implementer to refer to a specific release, in human-readable format. SQLite is a lightweight transactional database engine that occupies a small amount of disk storage and memory, so it's a perfect choice for creating databases on many mobile operating systems such as Android, iOS. You can return null if the fragment does not provide a UI. Every time you want to use a different content you just have to place the code inside that FrameLayout only. My Android is connected to the internet through the same modem as my PC. Vungle Android SDK 6. A Primary Key must contain unique value and it must not contain null value. 打开bin目录下配置文件idea. Hey guys, We've heard several reports that our game does not work on Android Oreo. The user will be logged in if UserComponent is not null. This site uses cookies for analytics, personalized content and ads. that it gets set to null before being passed. apkData must not be nullとか言われてもよくわからん。 Android Studioのバージョンは3. Intent to start an activity when a tag is discovered and activities are registered for the specific technologies on the tag. Android 18 in Bio-Broly. Android AsyncTask is an abstract class provided by Android which gives us the liberty to perform heavy tasks in the background and keep the UI thread light thus making the application more responsive. x versions and jump onto Retrofit 2 directly which has a lot of new features and a changed internal API compared to the previous versions. Android - PHP/MYSQL - In this chapter , we are going to explain, how you can integrate PHP and MYSQL with your android application. 1, build 2015111718 and trying to run the default DITA MAP PDF transform scenario out of the box. The Options Menu, Popup Menu, and Sliding Menu/Flyout Menu. You must create your own icons. @sky1arkk What you're doing wrong is trying to access an element that is not created in layout that used for Activity. In android, we must need to implement this method, in case if we don’t need to allow binding, then we should return NULL. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. IllegalStateException: stateLabelString must not be null at org. Think we should get a crash-signature for Android Background Services :) Stripped from product change [@ java. ## Step 1 - Add the mixpanel-android library as a gradle dependency: We publish builds of our library to the Maven central repository as an. I'll briefly introduce the Android development platform, then show you how to. Android location APIs make it easy for you to build location-aware applications, without needing to focus on the details of the underlying location technology. Let those be the areas. SQLite is a lightweight transactional database engine that occupies a small amount of disk storage and memory, so it's a perfect choice for creating databases on many mobile operating systems such as Android, iOS. This can be used * to communicate with the Renderer on the rendering thread. But the main problem is that after some success request callbacks don't come. All these solutions can work for all Android devices such as Samsung Galaxy, Galaxy Note series, HTC One, LG, etc. apkData must not be null 更新Android Studio 新版本运行已有的项目到真机上运行,报以下的错误 Cause: buildOutput. To help get you out of that conundrum, guideline I. Using Android Studio 2. This application takes care of Technical Guidelines 1-3 for you however, I am not responsible or liable if you do not follow them yourself. Volley is a HTTP library developed by Google and was first introduced during Google I/O 2013. Refer to the Google Play services release notes for more information. reboot the device (Before running the following steps, make sure you don't have local changes in your database which have not been synchronized with Google Drive (this can happen if you worked offline). It may need to be explicitly requested. This can be added in the following ways:. kt in order to open our fragment. Inserting current timestamp by default. Write data offline. Peter Leow If the "NetworkInfo" object is not null, In order for this USB hardware to work with Android devices, it must adhere to the. B4X Community - Android, iOS, desktop, server and IoT programming tools Home Forums > B4A - Android > Android Questions > Object should first be initialized & java. kt in order to open our fragment. Android Studio is the IDE of the future for Android development. Your migration failed checking Destination credentials. The collection has not been initialized. that is being caused in most Android Studio Projects after Android Studio 3. RuntimeException: java. To solve adb device not found errors, you must put kies mode when you conect the usb cable, I habe a i5550l blocked, and i habe just fixed with adb reboot recovery, its the only metod to enter to set factory default and reset all users. DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. gradle Do not use the older Location APIs which are much less. Unfortunately, this is not working reliably. Satan did not pay Android 18 her cut of the prize money yet, she, alongside Krillin, Goten and Trunks go to his personal mansion, with her personally entering and destroying much of his property to get him to fork over the promised cash (With Mr. When run on versions of the platform where this feature does not exist the activity will be launched normally. A string that uniquely identifies the host the build was built on, in human-readable format. apkData must not be null generate unsigned apk android studio (8) My android application using Kotlin is throwing this exception when I try to Run 'app' in the emulator o in my cellphone. Have you encountered the infamous “must not be null” errors in Android Development? Whilst there are many possibilities for fixing this error, one major overlooked fix / behaviour of layout and fix is outlined below. 12 tells you: Declare a pointer that must not be null as not_null. What caused Mobile Network Not Available. In MySQL, when you define a column as NOT NULL, it doesn't mean "this column must have a value. ctrl + click on itemDateSummaryList and see whether the textview is from he same layout file you have infate or otherwise - Irony Stack Nov 21 '17 at 6:15. This is how phones, when they are not used, are able to last several days on a single charge. btnYES) returns null because btnYES is not a view inside the contentView inflated to PageTwoActivity. You may have not had the easiest time rooting your device, but you feel like you overcame all of the obstacles. The app must also be installed in internal memory (not on an SD card. BluetoothLeScanner. To get started, you must first install the Google Play services library (version 11. This above function uses the android's native TextUtils class for validating if the entered text is null or not. apkData must not be null. IllegalStateException: argument must not be null exception occurs on J2K conversion of Generic class usage without type parameter 1 Normal Bug 1. So Jmeter seems super cool. Creational Design Patterns in Android #1 - Factory Method Pattern Published on August 17, 2016 August 17, 2016 • 70 Likes • 10 Comments. You will of course only get true from that equals("") call if test is a String "". In World of Warcraft, due to a bug the image of one of the developers appeared on a cube for many objects. Android 18 in Bio-Broly. Attendees; CalendarContract. An activity has multiple EditText on a RelativeLayout. In this post, you will learn to create a simple image slideshow app for Android. There is no mechanism to detect this apart from subscribing to a wildcard topic that would match all topics of interest and triggering processing when the first message is received on a given top. Updating to Android Studio 3. application plugin is applied. I have the same problem with my app, even though I have set my min target to 19. Subsequent requests by the client are permissible. In the Firebase console, click Add project, then select or enter a Project name. that is being caused in most Android Studio Projects after Android Studio 3. Android tutorial about working with Retrofit HTTP library. Create a Firebase project. ctrl + click on itemDateSummaryList and see whether the textview is from he same layout file you have infate or otherwise - Irony Stack Nov 21 '17 at 6:15. What caused Mobile Network Not Available. Offilne Maps with MapBox in Android. IllegalArgumentException: the name must not be empty: null" Exception on Google Drive Android app. You can always test whether an object is null with x == null or x != null and ought not to use the equals method, which will throw an Exception if called on a null reference. To experiment with this example, you will need actual Mobile device equipped with latest Android OS, otherwise you will have to struggle with emulator which may not work. Possible Cause For "Sys. Zero at Android. * {@link android. This artifact is the library that contains the Android plugin for Gradle in version 1. NullPointerException: Listener must not be null. Visit Understand Firebase Projects to learn more about Firebase projects. This Android tutorial is to explain what a fused location provider is and how to use it to get the location using a sample Android application. To switch back from AAPT2 to AAPT for a particular project, check and then re-uncheck the Use incremental packaging system (aapt2) setting in the Visual Studio project property pages, or set the $(AndroidUseAapt2) MSBuild property to false by hand in. Let it be Tutorials, Update Change Logs, Projects that users have created or anything else, you will find it here. Register your app for authentication and configure Azure App Service. In order to be used in arrays, a parcelable must implement a copy or move constructor (called implicitly in vector). Usually Primary Key is used to index the data inside the table. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Next, let's add a new Android project to this Solution that is based on the Android App template. So you can get the database reference in your code as. The keys are always Strings. Questions: I'm currently trying to make multiple-files inheritance in ES6, with node. MediaSessionCompat objects are not thread safe and all calls should be made from the same thread. 打开bin目录下配置文件idea. Your migration failed checking Destination credentials. A GPS without waypoints is like an Android without Activities, so here I illustrate what needs to be done to add an editable waypoint layer to Android. because of course the fields available on android. 1, build 2015111718 and trying to run the default DITA MAP PDF transform scenario out of the box. Android client application that receives remote notifications via GCM. */ public void onResume {mGLThread. is used when action keys are tied to specific suggestions. How to load new content in each page after swipe (with PageAdapter in Android) I'm trying to write a PageAdapter, which loads the next page after each swipe (no matter in which direction)After each swipe a new content should be shown. This attribute provides the name of a column in your suggestion cursor; The individual suggestion, in that column, provides the message. tethered to my phone with the sync cable connected to a null modem block connected. With all the stress that goes into booking flights and lodging, packing (and not forgetting) everything you'll need, finding pet sitters, and everything else that goes with a trip overseas, there's the added stress of staying connected while abroad. null is not an identifier for a property of the global object, like undefined can be. Android ExpandableListView. Driver must provide its own android. Request succeeded but there is no result. When the number of requests. onActivityCreated()The onActivityCreated() is called after the onCreateView() method when the host activity is created. A Primary Key must contain unique value and it must not contain null value. • Android apps have multiple entry points; no main()method –Cannot “sleep” in Android –During each entrance, certain Objects may be null –Null-checkprogramming is very useful to avoid crashes • Java concurrency techniques are required –Don’t block the main thread in Activities. Learn about the merits and the pitfalls of the leading smartphone platforms with this detailed breakdown, as we pit Android vs. SQLite is native to both Android and iOS, and every app can create and use an SQLite database if they so desire. [email protected] (Thus, adding or removing a key may change the order of the keys, but merely changing the value of an existing key must not. How to Run Kali Linux on any Android Device Without Rooting Full Tutorial: http://bit. The server will be written in Java and the client will be written in Android. RecyclerView. To install the library inside Android Stu. 3 and above) Note: Realm does not support Java outside Android(only Android Studio) The link for the project is given. CallVoidMethod. This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL). If listener is not used then write null. Basic functionality (eg. It is not clear from the standards documents exactly how NULLs should be handled in all circumstances. Find quick answers, explore your interests, and stay up to date with Discover. Null (or NULL) is a special marker used in Structured Query Language to indicate that a data value does not exist in the database. If you know that an IPC service takes more than a few milliseconds to complete, you should not call it in the Activity/View thread, because it might hang the application (Android might display an "Application is Not Responding" dialog). Android client application that receives remote notifications via GCM. Though Kotlin has lot massive features to speedup the development time, here is the simple way of using Spinner in Android. Office on iOS, Android is not free for everyone it never once used the words "consumer" or "business" to clarify which customers got what for free and who must still pay. You can always test whether an object is null with x == null or x != null and ought not to use the equals method, which will throw an Exception if called on a null reference. Universal SubscriptionOur Best Value – includes over 600 UI Controls, our award-winning reporting platform, DevExpress Dashboard, the eXpressApp Framework, CodeRush for Visual Studio and more. This code sample demonstrates the different types of menus available in Android and its ActionBar. Explained how to connect to mysql using php and the operations like create, read, update and delete operations are performed on mysql from android app. Instrumenting marketing triggers. Learn about the merits and the pitfalls of the leading smartphone platforms with this detailed breakdown, as we pit Android vs. Each call to this method returns a new instance of a Context object; Context objects are not shared, however common state (ClassLoader, other Resources for the same configuration) may be so the Context itself can be fairly lightweight. IPC calls are synchronous. This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL). Intent to start an activity when a tag is discovered and activities are registered for the specific technologies on the tag. I have the same problem with my app, even though I have set my min target to 19. In Android 4. So, when drawable is not null and it is a real object, then all goes well as calling the "equals(null)" method will return "false" But when "drawable" is null, then it means calling the "equals(…)" method on null object, means calling a method on an object that doesn't exist so it throws "NullPointerException". Retrofit Android. To prepare to process transactions with the SDK for the first time, an app must complete these setup operations: Initialize the SDK each time the app starts. Add App Center Push to your app. So how do you create an Android widget? For the. There are two columns where we did not use NOT NULL which means these columns could be NULL. Learn about the merits and the pitfalls of the leading smartphone platforms with this detailed breakdown, as we pit Android vs. By default, SQLite on Android does not have a. Try to call them in a separate thread. ) If n is greater than or equal to the number of key/value pairs in the object, then this method must return null. A string that uniquely identifies the host the build was built on, in human-readable format. IllegalArgumentException: 'items' must not be null ANDROID; Home > Forum. You can then start looking at the various parts of it to see what value is null and start looking back through your code to find out why. If there is a specification of an algorithm it should clearly tell, if the parameters of the algorithm are allowed to refer to null or not. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. It allows you to back up an unlimited amount of high-quality images without ever paying a dime, the photos and videos sync flawlessly across all of your devices, and its neural network-powered visual search feature seems like something that was pulled directly out of a Sci-Fi movie. This is just a quick tutorial update to solve the frustrating issue of buildOutput. Android AsyncTask is an abstract class provided by Android which gives us the liberty to perform heavy tasks in the background and keep the UI thread light thus making the application more responsive. Value null at 'tableName' failed to satisfy constraint: Member must not be null; Value null at 'item' failed to satisfy constraint: Member must not be null" When: While posting data to DynamoDB table through API Gateway How I solved that error: By adding a Body-Mapping template in the Integration Request. IllegalStateException: dbType not support : null host name may not be null IN not IN null Name must not be nul Must be Target host Roads not only in Be Host or Object Does not Exist RAC expressions must be NOT IN java. They may work for Activities, as long as they are not accessed before setContentView is called. The viewGroup is a subclass of view which provides the layout properties. Usually Primary Key is used to index the data inside the table. Picasso IllegalArgumentException Target must not be null. -impl as its dependency. If you are new to the community or like to welcome new members, we have a forum for just that! You will also find other forums such as Classifieds, Contests & Giveaways, FAQ’s, Announcements and even a section to provide feedback!. In this article, learn how to interact with Android's varied sensor options to monitor your environment. Then, the com. R are not the ones you'd creates a Toast but does not show it. OBSOLETE: API-Review is now defined in All-Projects refs/meta/config rules. Can not be null. Null (or NULL) is a special marker used in Structured Query Language to indicate that a data value does not exist in the database. you must add the following to your app build. 5です。 普通にBuild APKでは問題なく作成できる。. R are not the ones you'd creates a Toast but does not show it. Peter Leow If the "NetworkInfo" object is not null, In order for this USB hardware to work with Android devices, it must adhere to the. Your phone has been blocked up for safety reasons” notification from a law enforcement agency (FBI, Australian Federal Police, Metropolitan Police, U. Additionally, if your app targets Android 5. Primary key constraint uniquely identifies each record in a database. NULL Handling in SQLite Versus Other Database Engines. Posted on May 15, 2014 by ashishddbhagat. Note: This only affects the code running the build, not the project. Androidアプリ開発の際、皆さんはnullをどのように扱っていますか?また、nullチェックを行うのであれば、どのような基準で行っていますか?私自身まだまだAndroid開発歴が浅いため、特に何か基準がある訳でもなく…. B4X Community - Android, iOS, desktop, server and IoT programming tools Home Forums > B4A - Android > Android Questions > Object should first be initialized & java. 60 Fixed Ilya Kirillov Tools. Hi Folks, I have a Windows Service that connects to a SAP client and calls a function module. Please follow the Get started section if you haven't set up and started the SDK in your application, yet. Notification whenever a new topic is created on mosquitto. The issue generally happens when you install a custom ROM, update your Android device or manually modify the IMEI. > a primary key can not be NULL by definition The way i see it is: A PK must be unique and at least one COLUMN must be NOT NULL. Don't put view != null checks in your Presenters. You can even get coupons. I've only used it a little. Volley Tutorial With Example In Android Studio. It should be possible to deal with those null values without provoking or throwing of NullPointerExceptions. Input image guidelines. 1+ additional options were introduced to allow for more control on activity launch animations. gradle Do not use the older Location APIs which are much less. A Null dereference vulnerability in the Mosquitto library could lead to crashes for those applications using the library. Such requests are handled by the methods of the ContentResolver class. (If you're not familiar with creating Xamarin. In Android, integrating SQLite is a tedious task as it needs writing lot of boilerplate code to store simple data. NULL Handling in SQLite Versus Other Database Engines. This is a class file with getter and setter for places names details. Attendees; CalendarContract. The values must be of android. apkData must not be null的问题解决 08-28 阅读数 321 其实每次AndroidStudio版本升级都有坑,抱着尝鲜的心态今天把AS升级到3. Android Connectivity. Moreover, they reduce the number of null checks you need to make in your code. Validation error: This property can not be [Id] [int] IDENTITY(1,1) NOT NULL, [RoleId] [int] NOT NULL there must be something wroing with your PC do you want.