ToastPlugin插件在cordova3.3下使用

    自己开发的Todos应用，想实现“再按一次返回键退出程序”的功能，采用网上的ToastPlugins插件，发现代码或文章基本都是老版本，运行问题比较多。折腾了好久才弄好。下面吧基于cordova3.3下的ToastPlugins相关代码共享。

 

    ToastPlugin.java

package com.hy.todos.plugins;

 

import org.apache.cordova.CallbackContext;

import org.apache.cordova.CordovaPlugin;

import org.json.JSONArray;

import org.json.JSONException;

 

import android.util.Log;

import android.widget.Toast;

 

public class ToastPlugin extends CordovaPlugin

{    

    @Override

    public boolean execute(String action, JSONArray data, final CallbackContext callbackContext)

    {

        int tmpDuration;

        String tmpText = "none";

        Log.i("ToastPlugin" , "ToastPlugin json data::" +data);

        try

        {

            tmpText = data.getString(0);

        }

        catch (JSONException e)

        {

            callbackContext.error( "Parsing Text Exception");

            return false;

        }

        try

        {

            tmpDuration = data.getInt(1);

        }

        catch (JSONException e)

        {

            callbackContext.error( "Parsing Duration Exception");

            return false;

        }

 

        showMsg(tmpText,tmpDuration);

        return true;

    }

   

    public synchronized void showMsg(final String msg, final int duration) {

           Runnable runnable = new Runnable() {

                 public void run() {  

                     Toast. makeText(cordova.getActivity(), msg, duration).show();

                     

                }

           };

            cordova.getActivity().runOnUiThread(runnable);

     }

   

}

 

Toast-Plugin.js

var Toast= function() {

};

 

Toast.prototype .LENGTH_SHORT = 0;

Toast.prototype .LENGTH_LONG = 1;

 

Toast.prototype .show = function (msg, duration ,successCallback, failureCallback){

     return cordova.exec(

           successCallback,   

           failureCallback,    

            'ToastPlugin',

            null,             

           [msg, duration]       

     );

};

 

//Short Toast

Toast.prototype .shortshow = function (msg,successCallback, failureCallback){    

     this.show(msg, this.LENGTH_SHORT ,successCallback, failureCallback);

};

 

//Long Toast

Toast.prototype .longshow = function (msg,successCallback, failureCallback){    

     this.show(msg, this.LENGTH_LONG ,successCallback, failureCallback);

};

 

cordova.addConstructor(function() {

    if (!window.plugins) {

           window.plugins = {};

     }

     window.plugins.toast = new Toast();

});

 

在deviceready事件中注册用户触发返回键的backbutton事件,在其中进行逻辑处理和调用插件代码：

var quitflag = 0;

     

     document.addEventListener( "deviceready",onDeviceReady, false);

    function onDeviceReady() {

           navigator.splashscreen.hide(); 

           document.addEventListener( "backbutton", eventBackButton, false); //注册返回键

    }

    function eventBackButton(){

     if(window.plugins.toast){

           console.log( "window.plugins.Toast......");

           window.plugins.toast.shortshow( "再按一次返回键退出程序" );

     }

 

    quitflag++;

    setTimeout(function() {

                quitflag = 0;

           }, 3000);

 

            if (quitflag >= 2) {

                navigator.app.exitApp();

           }   

    }

 

调试了好几次发现能正常按2此返回键退出代码，但确没有信心提示。最后发现是没有在config.xml中进行插件配置声明。晕！

<feature name= "ToastPlugin">

   <param name ="android-package" value= "com.hy.todos.plugins.ToastPlugin" />

</feature >

 

至此，ToastPlugin插件在Cordova3.3上完好运行！：）