Question

So whenever I click the button on the startup page, it gives me a force close error. Here’s the class for the main.xml layout file:

public class ForeverAloneActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button btnstrt = (Button) findViewById(R.id.toq1);
        btnstrt.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent frstq = new Intent(v.getContext(), QuestionOne.class);
                startActivityForResult(frstq, 0);

And this is what I believe is producing the error. This class is related to the page that that when pressing the button on the startup page, you are taken to:

@Override
public void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView (R.layout.frstq);
    Button startQ2 = (Button) findViewById(R.id.toq2);
    startQ2.setOnClickListener(new View.OnClickListener(){

        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent toQ2 = new Intent(v.getContext(), QuestionTwo.class);
            final EditText number = (EditText) findViewById(R.id.editText1);
            final Toast error = Toast.makeText(QuestionOne.this, "Please insert a value", Toast.LENGTH_SHORT);
            if (number.getText().toString().equals("")) {error.show();
            }else{
            startActivityForResult(toQ2, 0);}

That if statement is there as on the next page, there is an EditText box. I tried to make it so that if there is nothing in the EditText box, it displays a toast message saying “Please insert a value”. Until an integer is put into the EditText box, then the button will not work.

If someone can help, it will be much appreciated.

Logcat:

04-07 19:33:58.199: W/dalvikvm(362): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-07 19:33:58.221: E/AndroidRuntime(362): FATAL EXCEPTION: main
04-07 19:33:58.221: E/AndroidRuntime(362): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.kenning.foreveralone/com.kenning.foreveralone.QuestionOne}; have you declared this activity in your AndroidManifest.xml?
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.app.Activity.startActivityForResult(Activity.java:2817)
04-07 19:33:58.221: E/AndroidRuntime(362):  at com.kenning.foreveralone.ForeverAloneActivity$1.onClick(ForeverAloneActivity.java:22)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.view.View.performClick(View.java:2408)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.view.View$PerformClick.run(View.java:8816)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.os.Handler.handleCallback(Handler.java:587)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.os.Handler.dispatchMessage(Handler.java:92)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.os.Looper.loop(Looper.java:123)
04-07 19:33:58.221: E/AndroidRuntime(362):  at android.app.ActivityThread.main(ActivityThread.java:4627)
04-07 19:33:58.221: E/AndroidRuntime(362):  at java.lang.reflect.Method.invokeNative(Native Method)
04-07 19:33:58.221: E/AndroidRuntime(362):  at java.lang.reflect.Method.invoke(Method.java:521)
04-07 19:33:58.221: E/AndroidRuntime(362):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-07 19:33:58.221: E/AndroidRuntime(362):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-07 19:33:58.221: E/AndroidRuntime(362):  at dalvik.system.NativeStart.main(Native Method)

Answer 1

are you adding QuestionTwo in manifiest file ?
check your error – have you declared this activity in your AndroidManifest.xml?