Activity Not recognized in Android Manifest

Question

I'm trying to make a simple program where if I go and click a button in my app a new activity pops up that asks to input a browser. Here's the Exception I keep recieving:

02-26 04:38:11.900 1937-1937/? E/AndroidRuntime: FATAL EXCEPTION: main
    android.content.ActivityNotFoundException: Unable to find explicit activity class
        {com.course.example.widgets/com.course.example.widgets.WebLookup};
    have you declared this activity in your AndroidManifest.xml?
        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
        at android.app.Activity.startActivityForResult(Activity.java:3370)
        at android.app.Activity.startActivityForResult(Activity.java:3331)
        at android.app.Activity.startActivity(Activity.java:3566)
        at android.app.Activity.startActivity(Activity.java:3534)
        at com.course.example.widgets.Widgets.onClick(Widgets.java:139)
        at android.view.View.performClick(View.java:4204)
        at android.view.View$PerformClick.run(View.java:17355)
        at android.os.Handler.handleCallback(Handler.java:725)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:5041)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)

Here's my manifest xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.course.example.widgets"
      android:versionCode="1"
      android:versionName="1.0">

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Widgets"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.course.example.widgets.WebLookup"
                    android:label="@string/app_name"/>
    </application>
    <uses-sdk android:minSdkVersion="17" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
</manifest>

Here's the code that actually starts the activity:

case R.id.webButton:{
    Intent webLookup = new Intent(this, WebLookup.class);
    startActivity(webLookup);
    break;

It's in a switch block that is for determining 3 other button actions but I didn't think it was relevant.

Here's a picture of XML file and my two Java files in navigator on left.

enter image description here

Disregard the two existing answers. Please tell us the capitalization you used in the actual file name for your class and show us the capitalization you used in the class name of your class. — Stephan Branczyk, Feb 26 '16 at 06:31
Possible duplicate of [...have you declared this activity in your AndroidManifest.xml](http://stackoverflow.com/questions/15699192/have-you-declared-this-activity-in-your-androidmanifest-xml) — Aditya Vyas-Lakhan, Feb 26 '16 at 06:32
Thank you, for the input however I tried putting the complete package name as shown above and it still doesn't work — Taylor Handy, Feb 26 '16 at 06:42

Amit Vaghela · Answer 1 · 2016-02-26T06:29:03.713

2

Declare this Activity to AndroidMenifest, you error might be have not written package name before activity name

<activity
            android:name=".WebLookup" //write package name before activity name
            android:configChanges="orientation" //optional
            android:screenOrientation="portrait" //optional
            android:windowSoftInputMode="adjustResize" /> //optional

edited Feb 26 '16 at 06:29

answered Feb 26 '16 at 06:22

Amit Vaghela

22,772
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Tried doing full location as shown above, but still did not work – Taylor Handy Feb 26 '16 at 06:40
This is working solution may be you are doing something wrong. write packagename.activity name where your activity is. check that properly. – Amit Vaghela Feb 26 '16 at 06:54
okay. under com.course.example.widgets make one more package and try – Amit Vaghela Feb 26 '16 at 06:58
visit http://stackoverflow.com/questions/8107789/android-error-unable-to-find-explicit-activity-class – Amit Vaghela Feb 26 '16 at 07:00
Why would making another package affect it? Are you saying to put WebLookup in a separate package? – Taylor Handy Feb 26 '16 at 07:02
yes, try that if this answer and link above doest work. – Amit Vaghela Feb 26 '16 at 07:03
yup. it was the package name. Thanks for pointing that out – Anirudh Ganesh Jul 17 '20 at 14:05

score 2 · Answer 2 · edited Oct 02 '20 at 04:44

2

If you have not included the package path at the top of the class you wont be able to reference it in the manifest, e.g.

edited Oct 02 '20 at 04:44

FluffyKitten

13,824
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answered Oct 02 '20 at 04:11

Abilsdon

21
2

score 1 · Answer 3 · answered Apr 09 '20 at 04:14

1

If you are adding this activity class manually, verify that the class is set to public. This way the AndroidManifest.xml should automatically show your activity class as a possible option.

public MyActivityClass extends AppCompatActivity{
...
}

answered Apr 09 '20 at 04:14

Alex

11
1

score 0 · Answer 4 · answered Feb 26 '16 at 06:21

use

<activity android:name="com.course.example.widgets.WebLookup"
                    android:label="@string/app_name"/>

the full name of the activity is much more comfortable in practice.

com.course.example.widgets.WebLookup mean the full path to your Activity class file.

score -1 · Answer 5 · answered Feb 26 '16 at 06:34

-1

You have to provide complete package name like this

<activity android:name="com.course.example.widgets.WebLookup"
                    android:label="@string/app_name"/>

Otherwise it will not detect your class whom to transfer the intent.

answered Feb 26 '16 at 06:34

Ashish Ani

324
1
7

Activity Not recognized in Android Manifest

5 Answers5