如何使用Java 8功能的Realm数据库

问题描述

我修改了我的gradle文件以包含，以便我可以使用Java 8语言功能。我还修改了Gradle文件以安装。当我同步项目gradle文件时，我收到以下错误：错误：无法在任务'：app：compileDebugJavaWithJack'上找到属性'选项'。这两个修改本身就可以正常工作，但由于某种原因，我不能同时拥有两个修改。

我非常感谢这方面的帮助。

解决方案

目前无法在Realm中使用Jack编译器，因为Jack不支持字节码操作（Javassist / Transform API）。

为了使用lambda表达式，您现在更容易使用Retrolambda。

<$ p $
// ...
依赖项{
classpathio.realm：realm-gradle-plugin：1.1.0
classpath 'me.tatarka：gradle-retrolambda：3.2.5'
}
}

和

  apply plugin：'me.tatarka.retrolambda'
 apply plugin：'realm-android'
 
 android {
 ... 
 
 compileOptions {
 sourceCompatibility JavaVersion.VERSION_1_8 
 targetComp适用性JavaVersion.VERSION_1_8 
} 
  

I am new to using Realm database for Android.

I modified my gradle files to include the Jack toolchain so that I could use Java 8 language features. I also modified the gradle files to install the Realm plugin. When I synced the project gradle files, I received the following error: Error:Could not find property 'options' on task ':app:compileDebugJavaWithJack'. The two modifications work fine on their own, but for some reason I cannot have both at the same time.

I would very much appreciate help on this matter.

解决方案

It is not possible to use Jack compiler with Realm at the moment, because Jack does not support bytecode manipulation (Javassist / Transform API).

In order to use lambdas, it's easier for you to use Retrolambda instead for the time being.

buildscript {
     //...
     dependencies {
        classpath "io.realm:realm-gradle-plugin:1.1.0"
        classpath 'me.tatarka:gradle-retrolambda:3.2.5'
    }
}

And

apply plugin: 'me.tatarka.retrolambda'
apply plugin: 'realm-android'

android {
    ...

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

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