App crashes when using Intent

Question

I got a >very< simple program, that crashes, when I try to change the activity. On my fragment_app_launch.xml there only is a Button (id: question_cat_button_1):

AppLaunch.java

public static class PlaceholderFragment extends Fragment {

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_app_launch,
                container, false);

        Button b = (Button)rootView.findViewById(R.id.question_cat_button_1);

        b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                Intent intent = new Intent("com.pthuermer.juraQuiz.QuizActivity");
                startActivity(intent);

            }

        });

        return rootView;
    }

AndroidManifest:

<activity
        android:name="com.pthuermer.juraquiz.QuizActivity"
        android:label="@string/title_activity_quiz" >
</activity>

logcat-error:

03-13 21:09:54.602: E/AndroidRuntime(13753): FATAL EXCEPTION: main
03-13 21:09:54.602: E/AndroidRuntime(13753): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.pthuermer.juraQuiz.QuizActivity }
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1671)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1441)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.app.Activity.startActivityForResult(Activity.java:3464)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.app.Activity.startActivityForResult(Activity.java:3425)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.support.v4.app.FragmentActivity.startActivityFromFragment(FragmentActivity.java:848)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.support.v4.app.Fragment.startActivity(Fragment.java:878)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at com.pthuermer.juraquiz.AppLaunch$PlaceholderFragment$1.onClick(AppLaunch.java:75)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.view.View.performClick(View.java:4475)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.view.View$PerformClick.run(View.java:18786)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.os.Handler.handleCallback(Handler.java:730)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.os.Handler.dispatchMessage(Handler.java:92)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.os.Looper.loop(Looper.java:137)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at android.app.ActivityThread.main(ActivityThread.java:5419)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at java.lang.reflect.Method.invokeNative(Native Method)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at java.lang.reflect.Method.invoke(Method.java:525)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
03-13 21:09:54.602: E/AndroidRuntime(13753):    at dalvik.system.NativeStart.main(Native Method)

what happens when you do `new Intent(getActivity(),QuizActivity.class)` — tyczj, Mar 13 '14 at 20:21

score 1 · Answer 1 · edited May 23 '17 at 11:57

1

Change

Intent intent = new Intent("com.pthuermer.juraQuiz.QuizActivity");

to

Intent intent = new Intent("com.pthuermer.juraquiz.QuizActivity");

small "q"

Differences in implicit and explicit Intents

You can find out a lot about implicit Intents easily by searching Google but typically for starting an Activity inside your own app it is easier with an explicit Intent as you used to get it to work.

edited May 23 '17 at 11:57

Community

1
1

answered Mar 13 '14 at 20:20

codeMagic

44,549
13
77
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same, it says "juraQuiz stopped" – Philip Mar 13 '14 at 20:24
But that's not the exception. That's the message you will get with every crash. Clear out the logcat and post the new logcat from the new crash. – codeMagic Mar 13 '14 at 20:25
`new Intent(getActivity(),QuizActivity.class)` worked. but why? – Philip Mar 13 '14 at 20:26
it says: fatal exception. i can't post the log cat in a comment – Philip Mar 13 '14 at 20:27
No, I would never want you to post your logcat in a comment. I meant by editing your post. Anyway, I'm glad you got it working. I have edited with a link. – codeMagic Mar 13 '14 at 20:30

score 0 · Answer 2 · answered Mar 13 '14 at 20:20

Java is case-sensitive, so com.pthuermer.juraquiz.QuizActivity and com.pthuermer.juraQuiz.QuizActivity are not the same, that is why you get ActivityNotFoundException. It should be:

 Intent intent = new Intent("com.pthuermer.juraQuiz.QuizActivity");
 startActivity(intent);

score 0 · Answer 3 · answered Mar 13 '14 at 20:22

0

You are setting the ACTION of the Intent to "com.pthuermer.juraQuiz.QuizActivity". I guess you want to use http://developer.android.com/reference/android/content/Intent.html#setClassName(java.lang.String, java.lang.String).

answered Mar 13 '14 at 20:22

Diego Torres Milano

65,697
9
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score 0 · Answer 4 · answered Mar 13 '14 at 23:02

0

Hey change your intent to this

Intent intent = new Intent(getApplicationContext(),com.pthuermer.juraquiz.QuizActivity.class);

answered Mar 13 '14 at 23:02

Imran Iqbal

163
1
11

App crashes when using Intent

4 Answers4