android – 从SD卡读取文本文件并使用手机间隙显示

我有example.txt文件sdcard,我想用手机间隙显示它.我是新手android和手机差距请帮忙.
这是我的example.txt文件：

     <h2>This file is in sdcard</h2>

这是我的phonegap.java

    package com.example.phonegap;
    import org.apache.cordova.DroidGap;

     public class Phonegap extends DroidGap{
        /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.loadUrl("file:///android_asset/www/myfile.html");
       }

    }

这里是www中的myfile.html：

       <!DOCTYPE html>
     <html>
     <head>
      <title>FileReader Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-1.5.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    // Wait for PhoneGap to load
    //
    function onl oad() {
        document.addEventListener("deviceready", onDeviceReady, false);
    }

    // PhoneGap is ready
    //
    function onDeviceReady() {
        window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
    }

    function gotFS(fileSystem) {
        fileSystem.root.getFile("file:///sdcard/example.txt", {create: true}, gotFileEntry, fail);
    }

    function gotFileEntry(fileEntry) {
        fileEntry.file(gotFile, fail);
    }

    function gotFile(file){
        readDataUrl(file);
        readAsText(file);
    }

    function readDataUrl(file) {
        var reader = new FileReader();
        reader.onloadend = function(evt) {
            console.log("Read as data URL");
            console.log(evt.target.result);
        };
        reader.readAsDataURL(file);
    }

    function readAsText(file) {
        var reader = new FileReader();
        reader.onloadend = function(evt) {
            console.log("Read as text");
            console.log(evt.target.result);
        };
        reader.readAsText(file);
    }

    function fail(evt) {
        console.log(evt.target.error.code);
    }

    </script>
  </head>
  <body>
    <h1>Example</h1>
    <p>Read File</p>
  </body>
</html>

解决方法:

改变这一行：

fileSystem.root.getFile("file:///sdcard/example.txt", {create: true}, gotFileEntry, fail);

是这样的：

fileSystem.root.getFile("example.txt", {create: false}, gotFileEntry, fail);

假设您要读取的文件是“example.txt”并且位于/ sdcard文件夹中.

android – 从SD卡读取文本文件并使用手机间隙显示

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