Question

我遇到令人沮丧的问题，让cordova将文件写入Android设备。

根据日志，一切正常，并且插件方法响应成功等，但当我去搜索文件时，他们无处可寻。

目前我只是使用新的phonegap测试应用程序，我按照以下指南并逐字使用了他们的示例代码。根据正在执行的日志安装插件。

http://docs.phonegap.com/en/edge/cordova_file_file.md.html

我希望该文件显示在/android/data/com.testapp.myapp/files

这是我的测试代码：

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');
        window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, app.gotFS, app.fail);
    },

    // 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);
    },

    gotFS: function(fileSystem) {
        fileSystem.root.getFile("testFile.txt", {create: true, exclusive: false}, app.gotFileEntry, app.fail);
    },

    gotFileEntry: function(fileEntry) {
        fileEntry.createWriter(app.gotFileWriter, app.fail);
    },

    gotFileWriter: function(writer) {
        writer.onwriteend = function(evt) {
            console.log("contents of file now 'some sample text'");
            writer.truncate(11);
            writer.onwriteend = function(evt) {
                console.log("contents of file now 'some sample'");
                writer.seek(4);
                writer.write(" different text");
                writer.onwriteend = function(evt){
                    console.log("contents of file now 'some different text'");
                }
            };
        };
        writer.write("some sample text");

    },

    fail: function() {
        alert("failed");
    }    
};

以下是来自logCat的日志条目，显示它已启动：

09-26 07:24:37.991 I/chromium( 2027): [INFO:CONSOLE(49)] "Received   

Event: deviceready", source: file:///android_asset/www/js/index.js (49)
09-26 07:24:38.591 D/TEST    ( 2027): cdvfile://localhost/persistent/testFile.txt: 16
09-26 07:24:39.063 I/chromium( 2027): [INFO:CONSOLE(62)] "contents of file now 'some sample text'", source: file:///android_asset/www/js/index.js (62)
09-26 07:24:39.075 D/TEST    ( 2027): cdvfile://localhost/persistent/testFile.txt: 15
09-26 07:24:39.155 I/chromium( 2027): [INFO:CONSOLE(65)] "contents of file now 'some sample'", source: file:///android_asset/www/js/index.js (65)
09-26 07:24:39.363 I/chromium( 2027): [INFO:CONSOLE(69)] "contents of file now 'some different text'", source: file:///android_asset/www/js/index.js (69)

对于为什么会发生这种情况的任何见解都会很棒。

谢谢！

Answer 1

不要让它变得如此复杂，这是将数据写入文件的代码。存储在'decdata'变量中的数据。不要忘记为根目录中的文件夹更改'somefolder'，并将'datafilename'更改为存储数据的文件。你还应该添加文件插件。

function start(){
       window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, writedata, fail);
}
    var decdata;

 function writedata(fileSystem) {
        fileSystem.root.getDirectory("<<somefolder>>", { create: true }, gotDir);
    }


 function gotDir(dirEntry) {

        dirEntry.getFile(<<datafilename>>, { create: true, exclusive: false }, gotFile);
    }


function gotFile(fileEntry) {

        fileEntry.createWriter(gotFileWriter, fail);

    }

    function gotFileWriter(writer) {
        writer.onwriteend = function (evt) {
            writer.truncate(1);
            writer.onwriteend = function (evt) {
                writer.seek(0);
                writer.write(decdata);
                writer.onwriteend = function (evt) {

                }
            };
        };
        writer.write("some sample text");
    }
    function fail(error) {
        alert('error' + error.code);
    }

Phonegap（Cordova）不会将文件写入Android

1 个答案: