When switching to activity, Android Studio shows the wrong activity.

Question

When switching to activity, Android Studio shows the wrong activity. I tried to do everything as the internet said. The activity itself was initialized and the GameActivity.java file also worked. The problem is that during the transition, Android shows the interface of the current activity.

IntroActivity.java
public class IntroActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intro);
}
public void toPlay(View Screen) {
Intent intent = new Intent(this, GameActivity.class);
startActivity(intent);
}
}

AndroidManifest.xml
<activity
android:label="@string/@string/gameAct.label"
android:name=".GameActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

Answer 1

Code is perfect....
Check your GameActivity.java if the setContentView is valid and pointing to the activity page u want to launch....