The problem is with you using this within the OnClickListener().
When you call new Intent(this, BroadcastActivity.class), this is
actually the OnClickListener instance not that Activity instance since
you are inside of a new View.OnClickListener class.
To access the parent Activity class, you can add a variable before
setting the onClickListener (the variable must be final if you want to
access it within the inner class) which holds the Activity instance
and then reference it inside of the OnClickListener.
Ex:
final Activity parentActivity = this;
btnBroadcast.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
// Start Activity Class Broadcast
startActivity(new Intent(parentActivity,
BroadcastActivity.class));
// Since we wont be coming back to this activity
ever again
parentActivity.finish();
}
});
It will also work if you make parentActivity a global variable (if it
is global, then you do not need to make it final).
-Andrew
On Jan 21, 1:29 pm, LenseOnLife <[email protected]> wrote:
> Hi,
>
> Please bear with me, I am a newbie geriatric who started programming
> when computers had discrete transistors and am only now returning
> after about a decade of forced retirement. Spent the last year
> using .NET and now trying to come to grips with Android/Java.
> Evidently, I still need to purchase some more books, but in the
> mantime, someone out there might be able to put me back onto the
> straight and narrow.
>
> OVERVIEW: In the manifest I start with 'inthebeginning' activity.
> This does nothing more than start another activity called
> MainMenuActivity which in turn has three buttons, each of which calls
> their own activity. InTheBeginningActivity works fine and amazed me
> that I actually got something working so easily.
>
> InTheBeginningActivity
>
> package com.cit.BroadcastSim;
>
> import android.app.Activity;
> import android.content.Intent;
> import android.os.Bundle;
>
> public class InTheBeginningActivity extends Activity {
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.splash); // Inflate the
> inthebeginning.xml file
>
> startActivity(new Intent(this, MainMenuActivity.class));
> // Since we wont be coming back to this activity ever again
> InTheBeginningActivity.this.finish();
> }
>
> }
>
> Now for the troublesome one. Although there are three buttons, I have
> only tried coding one adn have come a cropper.
>
> package com.cit.BroadcastSim;
>
> import android.app.Activity;
> import android.content.Intent;
> import android.os.Bundle;
> import android.widget.Button;
> import android.view.*;
>
> public class MainMenuActivity extends Activity {
> // Launched by InTheBeginningActivity.
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.mainmenu); // Inflate the
> mainmenu.xml file
>
> // Set up listeners for the three menu buttons
> // Broadcast, Setup and Exit
> // Firstly we have to find the buttons.
> // We do this by using their IDs and findViewById()
>
> Button btnBroadcast = (Button)
> this.findViewById(R.id.btnBroadcast);
> btnBroadcast.setOnClickListener(new View.OnClickListener(){
> public void onClick(View v){
> // Start Activity Class Broadcast
> startActivity(new Intent(this,
> BroadcastActivity.class));
> // Since we wont be coming back to this activity ever
> again
> MainMenuActivity.this.finish();
> }
> });
> }
>
> }
>
> The line with startActivity has a lightbulb with a red x :-( and teh
> error message when I hover over it is:
> The constructor Intent(new View.OnClickListener(){},Class
> <BroadcastActivity>) is undefined
>
> Everything within brackets is underlined in red and when I hover it I
> get the same as above with a hyperlinked hint
> remove arguments to match Intent()
> which works, the error goes, but then I am left with
> startActivity(new Intent());
> which doesn't do very much!
>
> Have scratched my head till all the hair has fallen out, so can
> someone out there in programming land tell me (gently) what I am doing
> wrong.
>
> Thanks
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
