Can't Create A Folder In External Storage On Android Device

I am trying to create a folder in external storage and I followed a couple of other threads here. However, even though I seem to be doing what they indicate, creation fails. Here's

Solution 1:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mydev.mobile.Test"
android:versionCode="1"
android:versionName="1.0" >
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
...
....
</manifest>

Solution 2:

Give the

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

out side the < application > tag