Trying to start a new Activity using Intent

Question

I'm new to Android Dev, so please help me out.

I'm trying to start a new activity after i press a button but nothing seems to work. Here's my code:

public class viewInfo extends Activity {
private Button btn;
public TextView txt;
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.info);
    btn=(Button)findViewById(R.id.buy);

    btn.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
             Intent myIntent = new Intent(viewInfo.this, buyNow.class);
             startActivity(myIntent);

        }

    });


}

I've also added this new activity in the Manifest but it keeps crushing after I press the button. What am I doing wrong?

Answer 1

Misread the question initially (original answer below for completeness sake).

Make sure you have the activity you are calling defined in your manifest file:

Something like

<activity android:name=".buyNow" android:label="@string/app_name"></activity>

within the application tags would suffice.

---

Here's the original answer.

Assuming that you have the correct button ID - try this in your onclick:

Intent myIntent = new Intent(getApplicationContext(), buyNow.class);
startActivity(myIntent);

You could add a log message inside your onClick too, to make sure it is actually being called. You can see the log from logcat (run via adb logcat on the command line)

Answer 2

You can simply do this:

startActivity(new Intent(getBaseContext(),Activity.class));

Afther you registred your activity in manifest:

     <activity
        android:name="com.example.ActivityName"
        android:label="@string/app_name" >
    </activity>

Answer 3

Try to make it:

startActivity(new Intent("[Here is your package name.what you declared in Manifest file]"));

For this you need to write to your manifest:

Hope it helps.

Answer 4

There may be a problem with your buyNow activity that is causing the error.

You really need to use logcat to trace the error. You can enable this by clicking the menu item:

Window -> Show View -> Other...

the selecting "LogCat" from the Android folder