Source Not Found Error Beginning Android 4 Application Development by Wei-Meng Lee, Eclipse REPOST -


this re-post. need help! android beginner going through book right thats teaching me android called android 4 application development we-meng lee. making project uses preference fragment. however. when try run it, takes me screen in eclipse says "source not found "cmp=net.learn2develop.preferencefragmentexample/.preferencefragmentexampleactivity here code preferences.xml.

<?xml version="1.0" encoding="utf-8"?> <preferencescreen    xmlns:android="http://schemas.android.com/apk/res/android" >  <preferencecatagory android:title="catagory 1"> <checkboxpreference     android:title="checkbox"     android:defaultvalue="false"     android:summary="true of false"     android:key="checkboxpref" /> </preferencecatagory>  <preferencecatagory android:title="catagory 2"> <edittextpreference     android:name="edittext"     android:summary="enter string"     android:defaultvalue="[enter string here]"     android:title="edit text"     android:key="edittextpref" /> <ringtonepreference     android:name="ringtone preference"     android:summary="select ringtone"     android:title="ringtones"     android:key="ringtonepref" />     <preferencescreen     android:title="second preference screen"     android:summary="click here go second preference screen"     android:key="secondprefscreenpref" /> <edittextpreference     android:name="edittext"     android:summary="enter string"     android:title="edit text (second screen)"     android:key="secondedittextpref" /> </preferencecatagory> 

here code fragment1.java file.

 package net.learn2develop.preferencefragmentexample;  import android.os.bundle; import android.preference.preferencefragment;   public class fragment1 extends preferencefragment { @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      addpreferencesfromresource(r.xml.preferences); }  } 

and here preferenceexampleactivity.java file

package net.learn2develop.preferencefragmentexample;  import android.app.activity; import android.app.fragmentmanager; import android.app.fragmenttransaction; import android.os.bundle;  public class preferencefragmentexampleactivity extends activity {  @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main);      fragmentmanager fragmentmanager = getfragmentmanager();     fragmenttransaction fragmenttransaction =         fragmentmanager.begintransaction(); fragment1 fragment1 = new fragment1(); fragmenttransaction.replace(android.r.id.content, fragment1); fragmenttransaction.addtobackstack(null); fragmenttransaction.commit(); } } 

can enlighten me on why doing this? appreciated!

the error seems clear, eclipse can't find preferencefragmentexampleactivity.java file in project. make sure file contains class preferencefragmentexampleactivity named preferencefragmentexampleactivity.java , in project (and not in other project). real beginner don't forget make clean of project , rebuild.


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