New to android, can't switch between intents -


this question has answer here:

i have button, , when clicked i'd load new view.

i using main activity class

public class mainactivity extends actionbaractivity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main); }  public void buttonpressed(view v){     intent = new intent(this, switchedactivity.class);     startactivity(i); } }

and i'd load other activity

public class switchedactivity extends activity { protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_two); } }

so should happen, click button in activity_main.xml, , loads layout activity_two.xml.

the problem is, when click button, app crashes.

i logcat stack trace:

08-18 11:36:09.078: e/androidruntime(1232): fatal exception: main 08-18 11:36:09.078: e/androidruntime(1232): process: com.johncorser.myapp, pid: 1232 08-18 11:36:09.078: e/androidruntime(1232): java.lang.illegalstateexception: not execute method of activity 08-18 11:36:09.078: e/androidruntime(1232):     @ android.view.view$1.onclick(view.java:3823) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.view.view.performclick(view.java:4438) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.view.view$performclick.run(view.java:18422) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.os.handler.handlecallback(handler.java:733) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.os.handler.dispatchmessage(handler.java:95) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.os.looper.loop(looper.java:136) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.activitythread.main(activitythread.java:5017) 08-18 11:36:09.078: e/androidruntime(1232):     @ java.lang.reflect.method.invokenative(native method) 08-18 11:36:09.078: e/androidruntime(1232):     @ java.lang.reflect.method.invoke(method.java:515) 08-18 11:36:09.078: e/androidruntime(1232):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:779) 08-18 11:36:09.078: e/androidruntime(1232):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:595) 08-18 11:36:09.078: e/androidruntime(1232):     @ dalvik.system.nativestart.main(native method) 08-18 11:36:09.078: e/androidruntime(1232): caused by: java.lang.reflect.invocationtargetexception 08-18 11:36:09.078: e/androidruntime(1232):     @ java.lang.reflect.method.invokenative(native method) 08-18 11:36:09.078: e/androidruntime(1232):     @ java.lang.reflect.method.invoke(method.java:515) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.view.view$1.onclick(view.java:3818) 08-18 11:36:09.078: e/androidruntime(1232):     ... 11 more 08-18 11:36:09.078: e/androidruntime(1232): caused by: android.content.activitynotfoundexception: unable find explicit activity class {com.johncorser.myapp/com.johncorser.myapp.switchedactivity}; have declared activity in androidmanifest.xml? 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.instrumentation.checkstartactivityresult(instrumentation.java:1628) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.instrumentation.execstartactivity(instrumentation.java:1424) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.activity.startactivityforresult(activity.java:3424) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.activity.startactivityforresult(activity.java:3385) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.support.v4.app.fragmentactivity.startactivityforresult(fragmentactivity.java:839) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.activity.startactivity(activity.java:3627) 08-18 11:36:09.078: e/androidruntime(1232):     @ android.app.activity.startactivity(activity.java:3595) 08-18 11:36:09.078: e/androidruntime(1232):     @ com.johncorser.myapp.mainactivity.buttonpressed(mainactivity.java:40) 08-18 11:36:09.078: e/androidruntime(1232):     ... 14 more

fair warning, i'm doing stupid, i'm new.

i pretty did not declare second activity in androidmanifest.xml file.

you should have in manifest:

<application ... >      <activity         android:name=".mainactivity"         ... >         <intent-filter>             <action android:name="android.intent.action.main" />             <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>      <activity         android:name=".switchedactivity"         ... >     </activity>      ... </application>

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