android open pdf,Android open pdf file

I'm developing an Android application and I have to open some files.

This is my code using intent:

public class FacturaActivity extends Activity {

(...)

public void downloadInvoice(View view) {

File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +"/"+ filename);

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file),"application/pdf");

intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

startActivity(intent);

}

}

File is in the root directory of the SD card and I can manually open it.

Problem

Application is closed when it arrives at startActivity(intent). I think the problem is in AndroidManifest.xml file, but I don't know how to put it correctly.

AndroidManifest.xml

android:minSdkVersion="8"

android:targetSdkVersion="8" />

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme"

android:name="###.MyApplication" >

android:name="###.MainActivity"

android:label="@string/app_name" >

android:name=".FacturaActivity" >

LogCat

07-03 15:49:13.094: E/AndroidRuntime(1032): FATAL EXCEPTION: main

07-03 15:49:13.094: E/AndroidRuntime(1032): java.lang.IllegalStateException: Could not execute method of the activity

(...)

07-03 15:49:13.094: E/AndroidRuntime(1032): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=file:///mnt/sdcard/201209_F2012212782.PDF typ=application/pdf flg=0x40000000 }

07-03 15:49:13.094: E/AndroidRuntime(1032): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1408)

07-03 15:49:13.094: E/AndroidRuntime(1032): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)

07-03 15:49:13.094: E/AndroidRuntime(1032): at android.app.Activity.startActivityForResult(Activity.java:2817)

07-03 15:49:13.094: E/AndroidRuntime(1032): at android.app.Activity.startActivity(Activity.java:2923)

Can you help me to complete AndroidManifest? Or how can I open that pdf?