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cordova创建基于Java的本地插件

关键词: cordova

cordova创建基于Java的本地插件

我们创建一个基于Java的插件add，由Java返回数字100，步骤如下:

1.在插件目录`/data/plugin`新建一个目录`add`，里面有3个文件，内容分别如下:

plugin.xml

```
<?xml version="1.0" encoding="utf-8"?>
<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" id="www.zhouchun.net.Add" version="1.0.0">
    <name>Add</name>
    <author>xxfaxy</author>
    <description>empty</description>
    <keywords>add</keywords>
    <license>empty</license>
    <engines>
        <engine name="cordova" version="3.7.1" />
    </engines>
    <js-module src="add.js" name="add">
        <clobbers target="add" />
    </js-module>
    <platform name="android">
        <source-file src="src/android/Add.java" target-dir="src/www/zhouchun/net/Add" />
        <config-file target="res/xml/config.xml" parent="/*">
            <feature name="Add">
                <param name="android-package" value="www.zhouchun.net.Add"/>
            </feature>
        </config-file>
    </platform>
</plugin>
```

add.js

```
var cordova = require('cordova');
var add = {
    do : function(successCallback, errorCallback){
        cordova.exec(successCallback, errorCallback, 'Add', 'do', []);
    }
};
module.exports = add;
```

src/android/Add.java

```
package www.zhouchun.net;
import org.apache.cordova.CordovaInterface;
import org.apache.cordova.CordovaWebView;
import org.json.JSONArray;
import org.apache.cordova.CallbackContext;
import org.json.JSONException;
import org.apache.cordova.CordovaPlugin;

public class Add extends CordovaPlugin {

public void initialize(CordovaInterface cordova, CordovaWebView webView) {
        super.initialize(cordova, webView);
    }

@Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
        try {
            if("do".equals(action)) {
                callbackContext.success(100);
                return true;
            }
            else{
                callbackContext.error("Invalid Action");
                return false;
            }
        }
        catch (Exception e) {
            callbackContext.error(e.getMessage());
            return false;
        }
    }
}
```

2.创建一个安卓程序

```
cordova create add www.zhouchun.net.add add
cd add
cordova platform add android
cordova plugin add /data/plugin/add
```

3.编辑程序的配置文件

config.xml

```
<?xml version='1.0' encoding='utf-8'?>
<widget id="www.zhouchun.net.add" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
    <name>add</name>
    <description>empty</description>
    <author email="dev@cordova.apache.org" href="http://cordova.io">empty</author>
    <content src="index.html" />
    <access origin="*" />
</widget>
```

4.编辑程序的入口文件

www/index.html

```
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>demo</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<meta name="viewport" content="user-scalable=no,initial-scale=1,maximum-scale=1,minimum-scale=1,width=device-width">
<script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script type="text/javascript" charset="utf-8">
function run(){
    add.do(onSuccess, onFailure);
}
function onSuccess(result){
    alert(result);
}
function onFailure(err){
    alert(JSON.stringify(err));
}
</script>
</head>
<body>
<button onclick="run()">test</button>
</body>
</html>
```

需要注意的是代码中直接引用`cordova.js`就好了，不必去下载放到程序目录下

5.生成安卓apk包

```
cordova build android
```

6.测试apk包

生成的apk包位置是`add/platforms/android/ant-build/MainActivity-debug.apk`

admin
2017-03-05 22:02:43
cordova

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cordova创建基于Java的本地插件