• 移动混合开发之android文件管理demo


    框架采用cordova,android编译环境为android studio.系统为mac,cordova 环境搭建参考网址:http://cordova.apache.org/docs/en/5.0.0/cordova/plugins/pluginapis.html#Plugin%20APIs

    1.index.html

    <!DOCTYPE html>
    <!--
     Licensed to the Apache Software Foundation (ASF) under one
     or more contributor license agreements.  See the NOTICE file
     distributed with this work for additional information
     regarding copyright ownership.  The ASF licenses this file
     to you under the Apache License, Version 2.0 (the
     "License"); you may not use this file except in compliance
     with the License.  You may obtain a copy of the License at
    
     http://www.apache.org/licenses/LICENSE-2.0
    
     Unless required by applicable law or agreed to in writing,
     software distributed under the License is distributed on an
     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     KIND, either express or implied.  See the License for the
     specific language governing permissions and limitations
     under the License.
     -->
    <html>
    <head>
        <!--
         Customize this policy to fit your own app's needs. For more guidance, see:
         https://github.com/apache/cordova-plugin-whitelist/blob/master/README.md#content-security-policy
         Some notes:
         * gap: is required only on iOS (when using UIWebView) and is needed for JS->native communication
         * https://ssl.gstatic.com is required only on Android and is needed for TalkBack to function properly
         * Disables use of inline scripts in order to mitigate risk of XSS vulnerabilities. To change this:
         * Enable inline JS: add 'unsafe-inline' to default-src
         -->
        <meta http-equiv="Content-Security-Policy"
              content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
        <meta name="format-detection" content="telephone=no">
        <meta name="msapplication-tap-highlight" content="no">
        <meta charset="utf-8">
        <meta name="viewport"
              content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
        <link rel="stylesheet" type="text/css" href="css/index.css"><br>
        <!----引入jQuery----!>
        <!--引入滑动第三方库,让列表滑动-->
        <script type="text/javascript" src="js/jquery-2.2.4.min.js"></script>
        <script type="text/javascript" src="js/iscroll-lite.js"></script>
        <script type="text/javascript" src="cordova.js"></script>
        <script type="text/javascript" src="js/index.js"></script>
        <title>Hello World</title>
    </head>
    <body>
    <div id="log"></div>
    <div class="head">
        浏览器
    </div>
    <!--自定义布局,没有使用第三方框架-->
    <div class="content">
        <div class="nav">
            <div id="current-dir"></div>
            <div id="upper">上一级</div>
        </div>
        <div class="list" id="file-list">
            <ul >
                <li class="t">
                    <div class="file-icon"></div>
                    <div class="file-name">This is file name1</div>
                </li>
            </ul>
        </div>
    </div>
    </body>
    </html>
    

      

    2.index.js

    /*
     * Licensed to the Apache Software Foundation (ASF) under one
     * or more contributor license agreements.  See the NOTICE file
     * distributed with this work for additional information
     * regarding copyright ownership.  The ASF licenses this file
     * to you under the Apache License, Version 2.0 (the
     * "License"); you may not use this file except in compliance
     * with the License.  You may obtain a copy of the License at
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing,
     * software distributed under the License is distributed on an
     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     * KIND, either express or implied.  See the License for the
     * specific language governing permissions and limitations
     * under the License.
     */
    var app = {
        // Application Constructor
        initialize: function () {
            this.bindEvents();
        },
        // Bind Event Listeners
        //
        // Bind any events that are required on startup. Common events are:
        // 'load', 'deviceready', 'offline', and 'online'.
        bindEvents: function () {
            document.addEventListener('deviceready', this.onDeviceReady, false);
        },
        // deviceready Event Handler
        //
        // The scope of 'this' is the event. In order to call the 'receivedEvent'
        // function, we must explicitly call 'app.receivedEvent(...);'
        onDeviceReady: function () {
            //       app.receivedEvent('deviceready');
            $(function () {
                myDeviceReady();
            });
        },
        // Update DOM on a Received Event
        receivedEvent: function (id) {
            var parentElement = document.getElementById(id);
            var listeningElement = parentElement.querySelector('.listening');
            var receivedElement = parentElement.querySelector('.received');
            listeningElement.setAttribute('style', 'display:none;');
            receivedElement.setAttribute('style', 'display:block;');
    
            console.log('Received Event: ' + id);
        }
    };
    
    app.initialize();
    var myscroll = null;
    
    function myDeviceReady() {
        var size = $(window).width() / 18
        //设计字体宽度
        $('html').css('font-size', size);
        myscroll = new IScroll("#file-list");
        //打开文件夹
        window.resolveLocalFileSystemURL(cordova.file.externalRootDirectory, function (entry) {
            openEntry(entry);
        }, function () {
            alert('fail');
        });
    }
    
    /*<li>
     <div class="file-icon"></div>
     <div class="file-name">This is file name1</div>
     </li>*/
    
    function openEntry(entry) {
        //使用克隆方式时,重新更新页面不能用,$('#file-list ul ).html(");
        $('#file-list ul li.item').remove();
        $('#current-dir').text("当前目录:" + entry.name);
        $('#upper').bindtouch(
            function () {
                entry.getParent(function (entry) {
                    openEntry(entry);
                }, function () {
                    alert('get Parent Error');
                });
            }
        );
    
        entry.createReader().readEntries(function (entries) {
                sortEntrise(entries);
                for (var i = 0; i < entries.length; i++) {
                    var entry = entries[i];
                    //采用克隆方式,比较方便
                    var jObjectLi = $('.t').clone().removeClass('t').addClass('item');
                    jObjectLi.find('.file-name').text(entry.name);
                    jObjectLi.data('entry', entry);
                    $('.list ul').append(jObjectLi);
                    jObjectLi.bindtouch(function () {
                        var liEntry = $(this).data('entry');
                        if (!liEntry.isFile) {
                            openEntry(liEntry);
                        }
                    });
                }
                myscroll.refresh();
            },
            function (error) {
                alert(error);
            });
    }
    
    //将文件和文件夹分离
    function sortEntrise(entries) {
        entries.sort(function (a, b) {
            if (a.isFile && !b.isFile) {
                return 1;
            } else if (!a.isFile && b.isFile) {
                return -1;
            } else {
                return a.name < b.name;
            }
        })
    }
    
    //扩展为jQuery自定义函数
    
    $.fn.bindtouch = function (cb) {
        attachMyEvent($(this), cb);
    };
    
    
    var timeID = null;
    
    function attachMyEvent(sr, cb) {
        //click事件反应时间为300毫秒,因此取消click采用手动
        //手指按下,若手指移动,则触发取消
        sr.unbind();
        clearTimeout(timeID);
        var point_one = {};
        var point_two = {};
        sr.on('touchstart', function (event) {
            var me = $(this)
            me.data('touch', true);
            var touch = event.originalEvent.targetTouches[0];
            point_one.x = touch.pageX;
            point_one.y = touch.pageY;
            //设计timeID如果点下时滑动就不用触发
            timeID = setTimeout(function () {
                me.addClass('touchInside');
            }, 100);
        });
    
        sr.on('touchend', function () {
            clearTimeout(timeID);
            var me = $(this);
            if (me.data('touch') == true) {
                //改变回调函数的this指针为sr
                //触发回调函数
                cb.bind(this)();
            }
            me.removeClass('touchInside')
            me.data('touch', false);
        });
    
        sr.on('touchmove', function (event) {
            var me = $(this);
            var touch = event.originalEvent.targetTouches[0];
            point_two.x = touch.pageX;
            point_two.y = touch.pageY;
            if (me.data('touch')) {
                //华为手机测试,没有滑动也会触发touchmove,所以加测滑动距离,来判断是否滑动
                var distane = getPointsDistance(point_one, point_two);
                console.log(distane);
                $('#log').text(distane);
                if (distane > 4) {
                    me.data('touch', false);
                    clearTimeout(timeID);
                    me.removeClass('touchInside')
                }
            }
    
            // alert(2);
        });
    }
    //计算两点之间距离
    function getPointsDistance(p1, p2) {
        var xDistance = Math.abs(p1.x - p2.x);
        var yDistance = Math.abs(p1.y - p2.y);
        var distance = Math.sqrt(xDistance * xDistance + yDistance * yDistance);
        return distance;
    }
    

      

    3.index.css

    /*
     * Licensed to the Apache Software Foundation (ASF) under one
     * or more contributor license agreements.  See the NOTICE file
     * distributed with this work for additional information
     * regarding copyright ownership.  The ASF licenses this file
     * to you under the Apache License, Version 2.0 (the
     * "License"); you may not use this file except in compliance
     * with the License.  You may obtain a copy of the License at
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing,
     * software distributed under the License is distributed on an
     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     * KIND, either express or implied.  See the License for the
     * specific language governing permissions and limitations
     * under the License.
     */
    * {
        -webkit-tap-highlight-color: rgba(0,0,0,0); /* make transparent link selection, adjust last value opacity 0 to 1.0 */
    }
    
    .head{
        position:absolute;
        left:0;
        right:0;
        top:0;
        height:2rem;
        line-height: 2rem;
        background-color:orange;
        padding-left:.3rem;
        color: white;
        text-align: center;
    }
    
    .content{
        position:absolute;
        top:2rem;
        bottom:0;
        left:0;
        right:0
    }
    .content .nav{
        position: absolute;
        top: 0;
        height: 1.5rem;
        left: 0;
        right: 0;
        background: #efefef;
    }
    
    .content .list{
        position: absolute;
        top: 1.5rem;
        left: 0;
        right: 0;
        bottom: 0;
        background: #adadad;
        overflow: hidden;
    }
    
    .content ul{
        list-style: none;
        padding: 0;
        margin: 0;
    }
    
    .content ul li{
        position: relative;
        height: 4rem;
        line-height: 2rem;
        padding-left: .5rem ;
        border-bottom: 1px solid gray;
        background: white;
    }
    .content ul li.touchInside{
        background: #efefef;
    }
    .content ul li .file-icon{
        position: absolute;
        background: url("../img/file.png") no-repeat center;
        background-size: 1.2rem 1.2rem;
         1.2rem;
        height: 1.2rem;
        left: 1rem;
        top:.3rem;
    }
    .content ul li .file-name{
        position: absolute;
        line-height: 2rem;
        left: 3.2rem;
    }
    
    .t{
        display: none;
    }
    #upper{
    	position: absolute;
    	right: 15px;
    	top: 5px;
    	color: blue;
    }
    
    #log{
         200px;
        height: 30px;
        color: red;
        float: right;
    }
    

     在html编写之前,先在终端下载好cordova-file插件,同时注意开起真机设备的或模拟器的 文件存储权限,具体路径为:设置-->应用管理->高级 ->应用权限->存储,  这个要千万注意,不然打不开sdk内容。

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  • 原文地址:https://www.cnblogs.com/yqlog/p/5611378.html
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