Is it possible to implement the model–view–controller pattern in Java for Android? Or is it already implemented through Activities? Or is there a better way to implement the MVC pattern for Android? In Android you don't have MVC, but you have the following: You define your user interface in various XML files by resolution, hardware, etc. You define your resources in various XML files
是否有可能在Java for Android中实现模型 - 视图 - 控制器模式? 还是已经通过活动实施? 或者有更好的方式来实现Android的MVC模式? 在Android中,您没有MVC,但您拥有以下内容: 您可以通过分辨率,硬件等在各种XML文件中定义您的用户界面。 您可以通过语言环境等在各种XML文件中定义您的资源。 您可以扩展ListActivity,TabActivity等类,并通过inflaters使用XML文件。 您可以根据自己的业务逻辑创建任意数量的
Can someone provide a concrete (actual Java code) example of MVP in action? This would include the following 3 types of classes and how they call each other's methods to achieve the pattern and process/respond to a client-side response: Model - some kind of value object (VO) View - represents or generates the UI Presenters - business logic MVP is my favorite design pattern to create
有人可以提供具体的(实际的Java代码)MVP实例吗? 这将包括以下3种类型,以及他们如何调用彼此的方法来实现模式和流程/响应客户端响应: 模型 - 某种价值对象(VO) 视图 - 表示或生成用户界面 演示者 - 业务逻辑 MVP是我最喜欢的创建UI的设计模式。 MVP和MVC最大的区别就是如何处理视图。 在MVC中,控制器操纵视图,负责在用户操作和模型的视图部分中呈现视图。 这意味着Controller和View具有“紧密耦合”。 在
This question already has an answer here: What are MVP and MVC and what is the difference? 24 answers To the best of my knowledge, there is no value in mixing the MVP and MVC patterns. Although semantically similar, mixing presenters and controllers just results in confusion. Could it be that this framework is using the terms independently of the known MVP/MVC patterns and gives them a di
这个问题在这里已经有了答案: 什么是MVP和MVC,有什么区别? 24个答案 就我所知,混合MVP和MVC模式没有任何价值。 尽管语义上相似,混合演示者和控制器只会导致混淆。 难道这个框架是使用独立于已知MVP / MVC模式的术语,并在框架的上下文中赋予它们不同的含义?
When using log.trace("with name {}, duration {}, repetitions {}", name, duration, repetitions); SLF4J complains as follows [javac] sourcefile.java:105: error: incompatible types: String cannot be converted to Marker [javac] log.trace("with name {}, duration {}, repetitions {}", [javac] ^ [javac] Note: Some messages have been simplified; recompile with -Xdiags:verbose to get f
使用时 log.trace("with name {}, duration {}, repetitions {}", name, duration, repetitions); SLF4J抱怨如下 [javac] sourcefile.java:105:错误:不兼容的类型:字符串不能转换为标记 [javac] log.trace(“带有名称{},持续时间{},重复{}”, [javac] ^ [javac]注意:有些消息已被简化; 使用-Xdiags:verbose重新编译以获得完整输出 [javac] 1错误 运用 log.trace("with name {}, duration {}, repetitions
Can someone explain what isolation & propagation parameters are for in the @Transactional annotation via real world example. Basically when and why I should choose to change their default values. Good question, although not a trivial one to answer. Propagation Defines how transactions relate to each other. Common options Required : Code will always run in a transaction. Create a ne
有人可以通过真实世界的例子解释@Transactional注释中的隔离和传播参数。 基本上什么时候和为什么我应该选择改变他们的默认值。 好问题,虽然不是一个可以回答的小问题。 传播 定义交易如何相互关联。 通用选项 Required :代码将始终在事务中运行。 创建一个新的事务或重用一个(如果可用)。 Requires_new :代码将始终运行在新的事务中。 如果存在,暂停当前事务。 隔离 定义事务之间的数据契约。 Read U
I just found out that Jackson does not implement JSR-353 and we already designed the module.. so i am in a desperate hurry to find a replacement of this API to begin working ! :D I searched an API that implements the standard but could not find any interesting result because we plan to code with the standard and force the system to use a particular implementation (the API i am desperately sear
我刚发现杰克逊没有实现JSR-353,而且我们已经设计了这个模块..所以我急于找到这个API的替代品开始工作! :d 我搜索了一个实现该标准的API,但找不到任何有趣的结果,因为我们打算使用标准进行编码并强制系统使用特定的实现(我正在拼命搜索API) 这是JRS 353参考实现:https://javaee.github.io/jsonp/ Genson图书馆宣称实施JSR-353。 https://code.google.com/p/genson/wiki/JSR353 尽管我自己并没有试过这个。 我
I have always wondered if, in general, declaring a throw-away variable before a loop, as opposed to repeatedly inside the loop, makes any (performance) difference? A (quite pointless) example in Java: a) declaration before loop: double intermediateResult; for(int i=0; i < 1000; i++){ intermediateResult = i; System.out.println(intermediateResult); } b) declaration (repeatedly) insi
我一直想知道,一般情况下,在循环之前是否声明一个抛出变量,而不是在循环内部重复,是否会产生任何(性能)差异? Java中的一个(完全没有意义的)例子: a)循环前声明: double intermediateResult; for(int i=0; i < 1000; i++){ intermediateResult = i; System.out.println(intermediateResult); } b)循环内声明(重复): for(int i=0; i < 1000; i++){ double intermediateResult = i; S
So I have tried to add my local .jar file dependency to my build.gradle file: apply plugin: 'java' sourceSets { main { java { srcDir 'src/model' } } } dependencies { runtime files('libs/mnist-tools.jar', 'libs/gson-2.2.4.jar') runtime fileTree(dir: 'libs', include: '*.jar') } And you can see that I added the .jar files into the referencedLibraries
所以我试图将我的本地.jar文件依赖项添加到我的build.gradle文件中: apply plugin: 'java' sourceSets { main { java { srcDir 'src/model' } } } dependencies { runtime files('libs/mnist-tools.jar', 'libs/gson-2.2.4.jar') runtime fileTree(dir: 'libs', include: '*.jar') } 你可以看到我在这里添加了.jar文件到referencedLibraries文件夹中:https://github.com/Wa
有没有人有任何想法,如果你可以在Maven仓库中找到源JAR文件? Maven Micro-Tip: Get sources and Javadocs When you're using Maven in an IDE you often find the need for your IDE to resolve source code and Javadocs for your library dependencies. There's an easy way to accomplish that goal. mvn dependency:sources mvn dependency:resolve -Dclassifier=javadoc The first command will attempt to do
有没有人有任何想法,如果你可以在Maven仓库中找到源JAR文件? Maven Micro-Tip:获取源代码和Javadocs 在IDE中使用Maven时,经常会发现需要IDE来解决源代码和Javadoc以满足库依赖性。 有一个简单的方法来实现这一目标。 mvn dependency:sources mvn dependency:resolve -Dclassifier=javadoc 第一个命令将尝试下载您的pom文件中每个依赖关系的源代码。 第二个命令将尝试下载Javadocs。 Maven在这里是图书馆打包者的摆布
I have to unpack some dependencies from a remote location and install them locally. I successfully get them (using the antrun plugin) and install them (using the install plugin) However, if I define them as dependencies ( <dependency>..</dependency> ) maven first tries to resolve them, and only then, if succeeds, proceeds to the antrun and install. I also tried the build-helper-
我必须从远程位置解压一些依赖项并在本地安装。 我成功地获得了它们(使用antrun插件)并安装它们(使用install插件) 但是,如果我将它们定义为依赖关系( <dependency>..</dependency> ),Maven会首先尝试解决它们,只有这样,如果成功,才会继续进行antrun并安装。 我也尝试过构建辅助插件和它的附加构件,但它没有做任何事情(它甚至没有将构件添加到最终的战争文件中) 那么,如何在maven试图解决依赖