使用android on phonegap寫入和閱讀.txt文件需要幫助

你好我所有的手機都很新... 我想創建文件和使用android手機上使用phonegap編寫文件下面的代碼不適合我... i've taken help from here 使用android on phonegap寫入和閱讀.txt文件需要幫助

這是我File.html位於成* android_asset/WWW/File.html *

<!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>PhoneGap</title> 
    <link rel="stylesheet" href="master.css" type="text/css" media="screen" 
     title="no title" charset="utf-8"> 
    <script type="text/javascript" charset="utf-8" src="phonegap.0.9.5.1.js"></script> 
    <script type="text/javascript" charset="utf-8" src="main.js"></script> 
    <script type="text/javascript" charset="utf-8"> 

     // Wait for PhoneGap to load 
     // 
     document.addEventListener("deviceready", onDeviceReady, false); 

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

     function gotFS(fileSystem) { 
      fileSystem.root.getFile("test.txt", null, gotFileEntry, fail); 
     } 

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

     function gotFileWriter(writer) { 
      writer.onwrite = function(evt) { 
       console.log("write success"); 
      }; 
      writer.write("some sample text"); 
      // contents of file now 'some sample text' 
      writer.truncate(11); 
      // contents of file now 'some sample' 
      writer.seek(4); 
      // contents of file still 'some sample' but file pointer is after the 'e' in 'some' 
      writer.write(" different text"); 
      // contents of file now 'some different text' 
     } 

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

     </script> 

    </head> 
    <body> 
    <h1>Example</h1> 
    <p>Write File</p> 

    </body> 
    </html>

這是我的課

public class testfileActivity extends DroidGap { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
//  setContentView(R.layout.main); 
     super.init(); 
     super.loadUrl("file:///android_asset/www/File.html"); 
    } 
}

logcat中這樣表示

07-06 13:15:10.732: DEBUG/ddm-heap(356): Got feature list request 
07-06 13:15:10.742: DEBUG/dalvikvm(30): GC freed 283 objects/10848 bytes in 278ms 
07-06 13:15:10.922: DEBUG/dalvikvm(30): GC freed 45 objects/2008 bytes in 160ms 
07-06 13:15:11.103: DEBUG/dalvikvm(30): GC freed 2 objects/48 bytes in 119ms 
07-06 13:15:11.593: INFO/System.out(356): Native Geolocation not supported - we're ok 
07-06 13:15:11.602: INFO/System.out(356): loadUrl(file:///android_asset/www/File.html) 
07-06 13:15:11.622: INFO/System.out(356): url=file:///android_asset/www/File.html baseUrl=file:///android_asset/www 
07-06 13:15:11.731: WARN/InputManagerService(51): Starting input on non-focused client [email protected] (uid=10001 pid=95) 
07-06 13:15:11.792: INFO/ActivityManager(51): Displayed activity android.com.testfile/.testfileActivity: 1429 ms (total 1429 ms) 
07-06 13:15:16.982: DEBUG/dalvikvm(217): GC freed 732 objects/64408 bytes in 85ms

和本許可我在AndroidManifest.xml中

<uses-permission android:name="android.permission.CAMERA" /> 
<uses-permission android:name="android.permission.VIBRATE" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" /> 
<uses-permission android:name="android.permission.READ_PHONE_STATE" /> 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.RECEIVE_SMS" /> 
<uses-permission android:name="android.permission.RECORD_AUDIO" /> 
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" /> 
<uses-permission android:name="android.permission.READ_CONTACTS" /> 
<uses-permission android:name="android.permission.WRITE_CONTACTS" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

什麼東西我失蹤或者自己做錯了什麼增加，這是在這裏..請提前幫助我，謝謝 - Pragna

來源

2011-07-06 Android

什麼說調試？你有權限嗎？ – PedroAGSantos

@subspider plz看到我編輯的代碼.. Pragna – Android

爲什麼你有super.init（）;首先？並且是代理服務器後面的Web服務器？ – PedroAGSantos

我覺得PhoneGap的考試人們缺少重要的東西。這條線就在這裏：

fileSystem.root.getFile("test.txt", null, gotFileEntry, fail);

只會加載它，如果該文件存在，嘗試更新它，如下所示：

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

，如果它不存在，就會創建它。

來源

2011-10-17 06:22:31 endyourif

使用android on phonegap寫入和閱讀.txt文件需要幫助

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