Android sharing file not working

Question

Please help, I'm newbie in android programming and sorry for my english. I'm working on android sharing file "PDF" into other apps, the process was followed from Android Sharing File but still not working, always displays an error

java.lang.IllegalArgumentException: Failed to find configured root that contains /temp.PDF

errors above happen when click the file.

DownloadListPDF.java

try {
    fileUri = FileProvider.getUriForFile(DownloadListPDF.this,
            "id.dutapulsa.bayartagihan.extension.FileProvider",
            requestFile); //<-- in this line that shows errors
} catch (IllegalArgumentException e) {
    e.printStackTrace();
}

Manifest.xml

<activity
    android:name="DownloadListPDF"
    android:label="List Struk"
    android:screenOrientation="portrait" >
    <intent-filter>
        <action android:name="android.intent.action.PICK" />

        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.OPENABLE" />

        <data android:mimeType="application/pdf" />
    </intent-filter>
</activity>

<provider
    android:name="android.support.v4.content.FileProvider"
    android:authorities="id.dutapulsa.bayartagihan.extension.FileProvider"
    android:exported="false"
    android:grantUriPermissions="true" >
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/filepaths" />
</provider>

filepaths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path path="pdf/" name="pdf" />
</paths>

and from logcat

06-25 09:47:18.282: W/System.err(20144): java.lang.IllegalArgumentException: Failed to find configured root that contains /temp.PDF
06-25 09:47:18.283: W/System.err(20144):    at id.dutapulsa.bayartagihan.extension.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:327)
06-25 09:47:18.283: W/System.err(20144):    at id.dutapulsa.bayartagihan.extension.FileProvider.getUriForFile(FileProvider.java:89)
06-25 09:47:18.283: W/System.err(20144):    at id.dutapulsa.bayartagihan.DownloadListPDF$1.onItemClick(DownloadListPDF.java:56)
06-25 09:47:18.284: W/System.err(20144):    at android.widget.AdapterView.performItemClick(AdapterView.java:298)
06-25 09:47:18.284: W/System.err(20144):    at android.widget.AbsListView.performItemClick(AbsListView.java:1300)
06-25 09:47:18.284: W/System.err(20144):    at android.widget.AbsListView$PerformClick.run(AbsListView.java:3034)
06-25 09:47:18.284: W/System.err(20144):    at android.widget.AbsListView$1.run(AbsListView.java:3834)
06-25 09:47:18.284: W/System.err(20144):    at android.os.Handler.handleCallback(Handler.java:800)
06-25 09:47:18.284: W/System.err(20144):    at android.os.Handler.dispatchMessage(Handler.java:100)
06-25 09:47:18.284: W/System.err(20144):    at android.os.Looper.loop(Looper.java:194)
06-25 09:47:18.284: W/System.err(20144):    at android.app.ActivityThread.main(ActivityThread.java:5469)
06-25 09:47:18.284: W/System.err(20144):    at java.lang.reflect.Method.invokeNative(Native Method)
06-25 09:47:18.284: W/System.err(20144):    at java.lang.reflect.Method.invoke(Method.java:525)
06-25 09:47:18.284: W/System.err(20144):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:857)
06-25 09:47:18.284: W/System.err(20144):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)
06-25 09:47:18.284: W/System.err(20144):    at dalvik.system.NativeStart.main(Native Method)