我正在尝试使用下面的代码(已在manifest.xml中设置权限android.permission.WRITE_EXTERNAL_STORAGE
)向SDCard写入文件。 一旦执行nmea_file.createNewFile();
它会抛出异常与Permission Denied
。Android SD卡写入,权限被拒绝
任何猜测为什么会发生这种情况?
if(!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
Log.d(TAG, "Sdcard was not mounted !!");
}
else
{
File nmea_file;
File root = Environment.getExternalStorageDirectory();
FileWriter nmea_writer = null;
try {
nmea_file = new File(root,"NMEA.txt");
if(!nmea_file.exists()) {
Log.w(TAG, "File Doesn't Exists!");
nmea_file.createNewFile();
}
nmea_writer = new FileWriter(nmea_file);
nmea_writer.append(nmea);
nmea_writer.flush();
}
catch (IOException e)
{
Log.w(TAG, "Unable to write", e);
}
finally
{
if (nmea_writer != null)
{
try
{
nmea_writer.close();
}
catch (IOException e)
{
Log.w(TAG, "Exception closing file", e);
}
}
}
}
张贴您的logcat – Falmarri 2010-12-22 06:07:19
您是否使用sharedUerId系统? – 2012-05-10 11:23:04