小编zaa*_*amm的帖子

我正在尝试将文件写入SDCard,但我在logcat中收到错误:

01-24 09:03:33.647: W/System.err(3353): java.io.FileNotFoundException: /mnt/sdcard/fun/itisfun.txt: open failed: EACCES (Permission denied)
    01-24 08:24:28.007: W/System.err(3353): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
    01-24 09:03:33.756: W/System.err(3353):at libcore.io.Posix.open(Native Method)

在这里我的代码写入SDCard:

File root = null;     
try {  
    // check for SDcard   
    root = Environment.getExternalStorageDirectory();                   
    Log.i(TAG,"path.." +root.getAbsolutePath());  

    //check sdcard permission  
    if (root.canWrite()){  
        File fileDir = new File(root.getAbsolutePath()+"/fun/");  
        fileDir.mkdirs();  

        File file = new File(fileDir, "itisfun.txt");  
        FileWriter filewriter = new FileWriter(file);  
        BufferedWriter out = new BufferedWriter(filewriter);  
        out.write("I m enjoying......dude");  
        out.close();
    }
} catch(...) {
    ...
} …

我试图从我的sqlite数据库中获取数据并将其写入csv文件并在完成写入时通过电子邮件发送信息.在数据库中只有一个包含3列的表.我有DBAdapter和一个具有用户必须按下的按钮的类能够导出数据.

这是我尝试过Exportdata.java的代码

try {
    root = Environment.getExternalStorageDirectory();                   
    Log.i(TAG,"path.." +root.getAbsolutePath());  

    //check sdcard permission  
    if (root.canWrite()) {  
        File fileDir = new File(root.getAbsolutePath()+"/fun/");  
        fileDir.mkdirs();  

        //   Log.d("DATABASE", db.getAllBYname());

        File file= new File(fileDir, "itisfun.csv");  
        FileWriter filewriter = new FileWriter(file);  
        BufferedWriter out = new BufferedWriter(filewriter);  
        out.write("I m enjoying......dude..............."  ); 
        out.close();  
    }  
} catch (IOException e) {  
    Log.e("ERROR:---", "Could not write file to SDCard" + e.getMessage());  
} 

这段代码确实在SD卡中创建了文件,但问题是我不能把它带到sqlite数据库数据并将其写入文件中,如code.im上所示卡住请帮助我举例或用正确的解决方案编辑我的代码.