如何更改科尔多瓦子项目用java版本 [英] How to change java version used by cordova subprojects

问题描述

我有一个科尔多瓦项目，我建立一个Android插件吧。我的插件然后使用该使用金刚石操作（小于>）的库。我试图运行它，但我收到此错误：

I have a Cordova project, and I am building a android plugin for it. My plugin then uses a library that uses the diamond operation (<>). I tried to run it but I receive this error :

diamond operator is not supported in -source 1.6
    ArrayList<Node> selectedProviders = new ArrayList<>();
                                                      ^
  (use -source 7 or higher to enable diamond operator)

当我运行：

$ java -version
java version "1.7.0_67"
Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
$ javac -version
javac 1.7.0_67

我之前发布的研究和一些人通过改变蚂蚁解析 config.xml中到

<property name="java.target" value="1.7" />
<property name="java.source" value="1.7" />

但它没有为我工作。

But it didnt worked for me.

我也试过做一个集结额外gradle这个文件来设置了 sourceCompatibility 和 targetCompatibility ，但它只是似乎解​​决了主体工程，不是我的我的插件使用子项目。

I also tried make a build-extra-gradle file to set-up the sourceCompatibility and targetCompatibility, but it just appears to resolve the main project, not the subproject that I use on my plugin.

推荐答案

好吧，什么对我来说是将所有你插件子项目（库）曾使用的YOUT科尔多瓦项目的主库。

Okay, what worked for me was adding all the sub-projects(libraries) that you plugin uses as main-libraries of yout cordova project.

下面我做了什么：
复制所有的库库，去日食>构建路径>订单和出口>标记的一切。
在这之后，你必须创建你的根/平台/ android文件夹，一个构建extras.gradle文件。将这个code对您的文件：

Here what I did: Copy all the libraries to libs, go to eclipse>build path>order and export>Mark everything. After that, you have to create a build-extras.gradle file on your root/platforms/android folder. Put this code on your file:

ext.postBuildExtras = {
android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
    allprojects {
        compileOptions {
            sourceCompatibility = JavaVersion.VERSION_1_7
            targetCompatibility = JavaVersion.VERSION_1_7
        }
    }
}
}

饲养引用的子项目，虽然。你必须让从项目参考和子项目（不知道为什么，但工作）。

Keeping referencing in the subprojects, though. You have to make the reference from the project and the subproject (not sure why, but worked.).

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