[Android]向sdcard中寫入文件

一，添加函數
try {
            File saveFile=new File("/sdcard/zhzhg.txt");
      
            FileOutputStream outStream = new FileOutputStream(saveFile);
            try {
                     outStream.write("文件的讀寫".getBytes());
                 }
            catch (IOException ex)
            {
                    Logger.getLogger(DeviceListActivity.class.getName()).log(Level.SEVERE, null, ex);
            }
            try
            {
                outStream.close();
            }
           catch (IOException ex)
          {
                Logger.getLogger(DeviceListActivity.class.getName()).log(Level.SEVERE, null, ex);
            }
     } www.2cto.com
    catch (FileNotFoundException ex)
    {
            Logger.getLogger(DeviceListActivity.class.getName()).log(Level.SEVERE, null, ex);
    }
二，設置向存儲卡讀寫權限
         在AndroidMainfest.xml文件中添加：
                 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
                <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>