Phonegap中自定义插件的使用

         在phonegap中需要实现特定相关的功能，可能需要自定义扩展一下功能，那么扩展phonegap组件就成为了可能。

 

源代码结构图：

 

   本文目的在于讲述怎么扩展一个phonegap组件以及实现。

 针对phonegap中activty扩展类：

package com.easyway.phonegap.datepicker;

import com.phonegap.*;
import android.os.Bundle;
/**
 * 实现DroidGap的
 *
 * @Title:
 * @Description: 实现 phonegap调用android中datepicker组件
 * @Copyright:Copyright (c) 2011
 * @Company:易程科技股份有限公司
 * @Date:2012-5-4
 * @author  longgangbai
 * @version 1.0
 */
public class PhonegapDatePluginActivity extends DroidGap {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //启动首页
        super.loadUrl("file:///android_asset/www/index.html");
    }
}

 

 

插件实现类：

package com.easyway.phonegap.datepicker;

import java.util.Calendar;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.util.Log;
import android.widget.DatePicker;
import android.widget.TimePicker;

import com.phonegap.api.PhonegapActivity;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
import com.phonegap.api.PluginResult.Status;

/**
 *
 * 实现DroidGap的在phonegap中想采用类似android中时间选择器datepicker
 *
 * @Title:
 * @Description: 实现 phonegap调用android中datepicker组件
 * @Copyright:Copyright (c) 2011
 * @Company:易程科技股份有限公司
 * @Date:2012-5-4
 * @author  longgangbai
 * @version 1.0
 */
public class DatePickerPlugin extends Plugin {

    private static final String ACTION_DATE = "date";
    private static final String ACTION_TIME = "time";

    /*
     * 必须实现这个方法
     * (non-Javadoc)
     *
     * @see com.phonegap.api.Plugin#execute(java.lang.String,
     * org.json.JSONArray, java.lang.String)
     */
    @Override
    public PluginResult execute(final String action, final JSONArray data,
            final String callBackId) {
        Log.d("DatePickerPlugin", "Plugin Called");
        PluginResult result = null;

        if (ACTION_DATE.equalsIgnoreCase(action)) {
            Log.d("DatePickerPluginListener execute", ACTION_DATE);
            this.showDatePicker(callBackId);
            final PluginResult r = new PluginResult(
                    PluginResult.Status.NO_RESULT);
            r.setKeepCallback(true);
            return r;

        } else if (ACTION_TIME.equalsIgnoreCase(action)) {
            Log.d("DatePickerPluginListener execute", ACTION_TIME);
            this.showTimePicker(callBackId);
            final PluginResult r = new PluginResult(
                    PluginResult.Status.NO_RESULT);
            r.setKeepCallback(true);
            return r;

        } else {
            result = new PluginResult(Status.INVALID_ACTION);
            Log.d("DatePickerPlugin", "Invalid action : " + action + " passed");
        }

        return result;
    }

    public synchronized void showTimePicker(final String callBackId) {
        final DatePickerPlugin datePickerPlugin = this;
        final PhonegapActivity currentCtx = ctx;

        final Runnable runnable = new Runnable() {

            public void run() {
                final TimePickerDialog tpd = new TimePickerDialog(currentCtx,
                        new OnTimeSetListener() {

                            public void onTimeSet(final TimePicker view,
                                    final int hourOfDay, final int minute) {
                                final JSONObject userChoice = new JSONObject();
                                try {
                                    userChoice.put("hour", hourOfDay);
                                    userChoice.put("min", minute);
                                } catch (final JSONException jsonEx) {
                                    Log.e("showDatePicker",
                                            "Got JSON Exception "
                                                    + jsonEx.getMessage());
                                    datePickerPlugin.error(new PluginResult(
                                            Status.JSON_EXCEPTION), callBackId);
                                }
                                datePickerPlugin.success(new PluginResult(
                                        PluginResult.Status.OK, userChoice),
                                        callBackId);

                            }
                        }, 1, 1, true);

                tpd.show();
            }
        };
        ctx.runOnUiThread(runnable);

    }

    public synchronized void showDatePicker(final String callBackId) {

        final DatePickerPlugin datePickerPlugin = this;
        final PhonegapActivity currentCtx = ctx;
        final Calendar c = Calendar.getInstance();
        final int mYear = c.get(Calendar.YEAR);
        final int mMonth = c.get(Calendar.MONTH);
        final int mDay = c.get(Calendar.DAY_OF_MONTH);

        final Runnable runnable = new Runnable() {

            public void run() {
                final DatePickerDialog dpd = new DatePickerDialog(currentCtx,
                        new OnDateSetListener() {

                            public void onDateSet(final DatePicker view,
                                    final int year, final int monthOfYear,
                                    final int dayOfMonth) {

                                final JSONObject userChoice = new JSONObject();

                                try {
                                    userChoice.put("year", year);
                                    userChoice.put("month", monthOfYear);
                                    userChoice.put("day", dayOfMonth);
                                } catch (final JSONException jsonEx) {
                                    Log.e("showDatePicker",
                                            "Got JSON Exception "
                                                    + jsonEx.getMessage());
                                    datePickerPlugin.error(new PluginResult(
                                            Status.JSON_EXCEPTION), callBackId);
                                }

                                datePickerPlugin.success(new PluginResult(
                                        PluginResult.Status.OK, userChoice),
                                        callBackId);

                            }
                        }, mYear, mMonth, mDay);

                dpd.show();
            }
        };
        ctx.runOnUiThread(runnable);
    }

}

 

 

phonegap中plugin.xml中配置：

<?xml version="1.0" encoding="utf-8"?>
<plugins>
    <plugin name="App" value="com.phonegap.App"/>
    <plugin name="Geolocation" value="com.phonegap.GeoBroker"/>
    <plugin name="Device" value="com.phonegap.Device"/>
    <plugin name="Accelerometer" value="com.phonegap.AccelListener"/>
    <plugin name="Compass" value="com.phonegap.CompassListener"/>
    <plugin name="Media" value="com.phonegap.AudioHandler"/>
    <plugin name="Camera" value="com.phonegap.CameraLauncher"/>
    <plugin name="Contacts" value="com.phonegap.ContactManager"/>
    <plugin name="Crypto" value="com.phonegap.CryptoHandler"/>
    <plugin name="File" value="com.phonegap.FileUtils"/>
    <plugin name="Network Status" value="com.phonegap.NetworkManager"/>
    <plugin name="Notification" value="com.phonegap.Notification"/>
    <plugin name="Storage" value="com.phonegap.Storage"/>
    <plugin name="Temperature" value="com.phonegap.TempListener"/>
    <plugin name="FileTransfer" value="com.phonegap.FileTransfer"/>
    <plugin name="Capture" value="com.phonegap.Capture"/>
    <plugin name="DatePickerPlugin" value="com.easyway.phonegap.datepicker.DatePickerPlugin"/>
</plugins>

 

插件对应的js的编写：

/**
 *
 * @return Object literal singleton instance of DatePicker
 */
var DatePicker = function() {

};

DatePicker.prototype.showDateOrTime = function(action,successCallback, failureCallback) {
     return PhoneGap.exec(
     successCallback,    //Success callback from the plugin
     failureCallback,     //Error callback from the plugin
     'DatePickerPlugin',  //Tell PhoneGap to run "DatePickerPlugin" Plugin
     action,              //Tell plugin, which action we want to perform
     []);        //Passing list of args to the plugin
};

/**
 * Enregistre une nouvelle bibliothèque de fonctions
 * auprès de PhoneGap
 **/

PhoneGap.addConstructor(function() {
    //如果不支持window.plugins,则创建并设置
    if(!window.plugins){
        window.plugins={};
    }
    window.plugins.datePickerPlugin=new DatePicker();
    //向phonegap中注入插件相关的js
    //Register the javascript plugin with PhoneGap
    PhoneGap.addPlugin('datePickerPlugin', new DatePicker());
    //phonegap中注入后台插件相关的java类
  //Register the native class of plugin with PhoneGap
    PluginManager.addService("DatePickerPlugin",
                         "com.easyway.phonegap.datepicker.DatePickerPlugin");
});

 

页面调用如下：

<!DOCTYPE HTML>
<html>
  <head>
    <meta name="viewport" content="width=320; user-scalable=no" />
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <title>Minimal AppLaud App</title>
    <!-- 加载phonegap -->
    <script type="text/javascript" charset="utf-8" src="phonegap-1.4.1.js"></script>
    <!-- 加载jquery -->
    <script type="text/javascript" charset="utf-8" src="jquery.mobile/jquery-1.6.4.min"></script>
    <!-- 加载jquerymobile -->
    <script type="text/javascript" charset="utf-8" src="jquery.mobile/jquery.mobile-1.0.1.js"></script>
    <!-- 加载自定义插件 -->
    <script type="text/javascript" charset="utf-8" src="datePickerPlugin.js"></script>
    <script type="text/javascript" charset="utf-8">

     $(function(){
        $("#datepicker").click(function(){
            alert("0000000");
              window.plugins.datePickerPlugin.showDateOrTime(
                    'date',
                    function(r){
                        document.getElementById("mydatetargetfield").value = r.day + "/" + r.month + "/" + r.year;
                    },
                    function(e){console.log(e);}
                );
        });
     });
</script>

  </head>
  <body  class="theme">
    <input id="mydatetargetfield" type="text" />
   <input id="datepicker" type="button" value="时间选择器">
  </body>
</html>

 

运行结果如下：