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POSimple Android Activity Causes Crash
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copied!<p>I started creating a new activity for my android app, and as I was testing it I encountered a problem. As i touched the button to go to the new activity, the app would crash and send be back to the main activity. </p> <p>Here is my activity with the button that goes to the new activity:</p> <pre><code>package brian.android.testgame; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class BeginnerLevelSelector extends Activity { protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.beginner_level_selector); Button level1button = (Button) findViewById(R.id.bl1); final Intent level1activity = new Intent(this, Level1Activity.class); level1button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { startActivity(level1activity); } }); } } </code></pre> <p>Here is my activity that crashes when I try to start it (yes, that is all I typed before I found the problem)</p> <pre><code>package brian.android.testgame; import android.app.Activity; import android.os.Bundle; public class Level1Activity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_menu); } } </code></pre> <p>And here is my log when the app crashes:</p> <pre><code>05-06 21:07:29.085: E/AndroidRuntime(20391): FATAL EXCEPTION: main 05-06 21:07:29.085: E/AndroidRuntime(20391): android.content.ActivityNotFoundException: Unable to find explicit activity class {brian.android.testgame/brian.android.testgame.Level1Activity}; have you declared this activity in your AndroidManifest.xml? 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1634) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1510) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.app.Activity.startActivityForResult(Activity.java:3244) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.app.Activity.startActivity(Activity.java:3351) 05-06 21:07:29.085: E/AndroidRuntime(20391): at brian.android.testgame.BeginnerLevelSelector$1.onClick(BeginnerLevelSelector.java:22) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.view.View.performClick(View.java:3549) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.view.View$PerformClick.run(View.java:14400) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.os.Handler.handleCallback(Handler.java:605) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.os.Handler.dispatchMessage(Handler.java:92) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.os.Looper.loop(Looper.java:154) 05-06 21:07:29.085: E/AndroidRuntime(20391): at android.app.ActivityThread.main(ActivityThread.java:4944) 05-06 21:07:29.085: E/AndroidRuntime(20391): at java.lang.reflect.Method.invokeNative(Native Method) 05-06 21:07:29.085: E/AndroidRuntime(20391): at java.lang.reflect.Method.invoke(Method.java:511) 05-06 21:07:29.085: E/AndroidRuntime(20391): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 05-06 21:07:29.085: E/AndroidRuntime(20391): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 05-06 21:07:29.085: E/AndroidRuntime(20391): at dalvik.system.NativeStart.main(Native Method) </code></pre>

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