Question

我有这段代码

File dir = new File(Environment.getExternalStorageDirectory() + "/" +  "new_dir");
                if (dir.mkdir()) {
                    txtView.setText(dir + " Directory created");
                } else {
                    txtView.setText(dir + " Directory is not created");
                }

我还添加了

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

但它总是在else中，并且永远不会创建目录：S：S

Answer 1

尝试此代码

 String newFolder = "/myFolder2";
 String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
 File myNewFolder = new File(extStorageDirectory + newFolder);
 (!myNewFolder.mkdir())
{
Log.e(TAG, "Create dir in sdcard failed");

              return;

}

用户权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

无法在SD卡上创建目录：S

1 个答案: