CODEWITHSUNDEEP
android
Steve
Steve

Reputation: 1153

Activity not found exception

StackTrace:

07-06 23:52:27.226: E/AndroidRuntime(7600): FATAL EXCEPTION: main
07-06 23:52:27.226: E/AndroidRuntime(7600): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.stevedata/android.app.ListActivity}; have you declared this activity in your AndroidManifest.xml?
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Activity.startActivityForResult(Activity.java:3390)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Activity.startActivityForResult(Activity.java:3351)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Activity.startActivity(Activity.java:3587)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.Activity.startActivity(Activity.java:3555)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at com.example.stevedata.MainActivity$1.onClick(MainActivity.java:38)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.view.View.performClick(View.java:4240)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.view.View$PerformClick.run(View.java:17721)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.os.Handler.handleCallback(Handler.java:730)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.os.Handler.dispatchMessage(Handler.java:92)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.os.Looper.loop(Looper.java:137)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at android.app.ActivityThread.main(ActivityThread.java:5103)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at java.lang.reflect.Method.invokeNative(Native Method)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at java.lang.reflect.Method.invoke(Method.java:525)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-06 23:52:27.226: E/AndroidRuntime(7600):     at dalvik.system.NativeStart.main(Native Method)

MainActivity.java

public class MainActivity extends Activity {


    Button button1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button1=(Button)findViewById(R.id.button1);

        button1.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                Intent intent=new Intent(MainActivity.this,ListActivity.class);

                startActivity(intent);

            }
        });

  }

 }

ListActivity.java:

public class ListActivity extends Activity {

    Button button1;

      @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.list_activity);

            button1=(Button)findViewById(R.id.button);
      }
}

Manifest:

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        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=".ListActivity" 
           android:label="@string/app_name"
          />

</application>

Anyone can help me with this.Thank you.

Upvotes: 1

Views: 361

Answers (4)

Nabin
Nabin

Reputation: 11776

Your activity name is ListActivity, which is a class already on android (android.app.ListActivity). So rename the class name.

Upvotes: 2

Ahmad Nawaz
Ahmad Nawaz

Reputation: 1148

Import com.example.stevedata.ListActivity instead of android.app.ListActivity in your MainActivity

Upvotes: 1

ThaiPD
ThaiPD

Reputation: 3761

I think the root cause because of Android SDK existing a Class name ListActivity So the Os did not know exaclty what class need to be called this case. Try to rename your class to another in both of java and Manifest

Upvotes: 2

dandc87
dandc87

Reputation: 1106

It looks like you imported the wrong ListActivity in you're MainActivity. The crash indicates that you are trying to start android.app.ListActivity

Upvotes: 3

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