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POProblem using ListFragment on Android
 

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  1. POProblem using ListFragment on Android
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    <p>I'm very new at programming in Android (I have programmed extensively PC applications and used Java) and I'm at a loss. I want to create a application that uses fragments. I want to create the Fragment Programaticaly (as the introduction says on Android Developer page) buy my application keeps crashing and I have no Idea as to why.</p> <p>Here is the code for my main activity:</p> <pre><code>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); FragmentManager fmanager = getFragmentManager(); FragmentTransaction ftransaction = fmanager.beginTransaction(); FileBrowser fbrowser = new FileBrowser(); ftransaction.add(R.layout.main,fbrowser, "FileBrowser"); ftransaction.commit(); fbrowser.test(); } </code></pre> <p>And here is the code for FileBrowser:</p> <p>public class FileBrowser extends ListFragment {</p> <pre><code>public void test(){ System.err.println("Entre a test!!!"); String[] MyList = {"HOla","Mundo","De","Las","Listas"}; if (getActivity() == null){ System.err.println("I get a NULL Activity"); } else{ System.err.println("No NULL Activity Attempting to Create an Adapter"); ArrayAdapter&lt;String&gt; aa = new ArrayAdapter&lt;String&gt;(getActivity(), R.layout.file_row, MyList); } //setListAdapter(new ArrayAdapter&lt;String&gt;(this.getActivity(), R.layout.file_row, MyList)); } </code></pre> <p>}</p> <p>All I wan to do to start is to print the string list MyList in the fragment. However I the program crashes and I get this error:</p> <p>06-09 19:25:42.920: ERROR/AndroidRuntime(26064): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ccr/com.ccr.Main}: java.lang.IllegalArgumentException: No view found for id 0x7f030001 for fragment FileBrowser{4077d558 #0 id=0x7f030001 FileBrowser}</p> <p>Thanks for any help!</p> <p>PD: I get the I get a NULL Activity Message also.</p> <hr> <p>I've tried that and it did not work either.</p> <p>This is my new xml file</p> <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;FrameLayout android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/flFileBrowser"&gt; &lt;/FrameLayout&gt; &lt;/LinearLayout&gt; </code></pre> <p>And this is what my code reads:</p> <pre><code> public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); FragmentManager fmanager = getFragmentManager(); FragmentTransaction ftransaction = fmanager.beginTransaction(); FileBrowser fbrowser = new FileBrowser(); System.err.println("I'm about to add the fragment"); ftransaction.add(R.id.flFileBrowser,fbrowser, "FileBrowser"); System.err.println("fragment added"); ftransaction.commit(); System.err.println("Done"); } </code></pre> <p>This was my output:</p> <pre><code>06-10 12:23:21.520: WARN/System.err(30826): I'm about to add the fragment 06-10 12:23:21.520: WARN/System.err(30826): fragment added 06-10 12:23:21.520: WARN/System.err(30826): Done 06-10 12:23:21.520: WARN/dalvikvm(30826): threadid=1: thread exiting with uncaught exception (group=0x40131760) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): FATAL EXCEPTION: main 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ccr/com.ccr.Main}: java.lang.IllegalArgumentException: No view found for id 0x7f050000 for fragment FileBrowser{4077d3f0 #0 id=0x7f050000 FileBrowser} 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.os.Handler.dispatchMessage(Handler.java:99) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.os.Looper.loop(Looper.java:132) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at android.app.ActivityThread.main(ActivityThread.java:4025) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at java.lang.reflect.Method.invokeNative(Native Method) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at java.lang.reflect.Method.invoke(Method.java:491) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): at dalvik.system.NativeStart.main(Native Method) 06-10 12:23:21.520: ERROR/AndroidRuntime(30826): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f050000 for fragment FileBrowser{4077d3f0 #0 id=0x7f050000 FileBrowser} </code></pre>
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    1. CO@Dori Thank you very much for fixing my post? I'm sorry about what I did but I didn't realize how to update my question until it was too late. You are right. and I did read the faq but I could not find anything about how to add new code or fix my question with another question. Thank you for your help!
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    2. COif you look just under the "android" tag above, you should be able to see a text link that says "edit"—click it, edit away, and save.
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