*> I know what "this" is. What is confusing is that a lot of developers
> are using <class name>.this. It does not make sense to me to use <class
> name>.this. When I see <class name>.something it looks like a static
> access.*
That syntax is only used for an inner class to access the outer class...
Here is a simple example:
public class A
{
protected int x;
protected B instanceOfB;
public A()
{
x = 5;
instanceOfB = new B();
instanceOfB.getX(); //returns 6
instanceOfB.getOuterX(); //returns 5
}
public class B
{
protected int x;
public B()
{
x = 6;
}
public int getX()
{
return this.x;
}
public int getOuterX()
{
return A.this.x;
}
}
}
Hope this little example clears things up a bit... Obviously this is
extremely simplified, but it shows when to use "this" and when to use
"<ClassName>.this"
Thanks,
Justin Anderson
MagouyaWare Developer
http://sites.google.com/site/magouyaware
On Mon, Mar 12, 2012 at 8:43 PM, bob <[email protected]> wrote:
> I know what "this" is. What is confusing is that a lot of developers
> are using
> <class name>.this. It does not make sense to me to use <class
> name>.this. When I see <class name>.something it looks like a static
> access.
>
> On Mar 12, 3:02 pm, Justin Anderson <[email protected]> wrote:
> > Remove the Main_Activity part... It isn't needed.
> >
> > You should probably brush up a bit on Java as well... Here is a link to
> > some info about how and why "this" works the way it does:
> http://docs.oracle.com/javase/tutorial/java/javaOO/thiskey.html
> >
> > Thanks,
> > Justin Anderson
> > MagouyaWare Developerhttp://sites.google.com/site/magouyaware
> >
> >
> >
> >
> >
> >
> >
> > On Mon, Mar 12, 2012 at 3:36 PM, bob <[email protected]> wrote:
> > > I don't understand why it lets me do something like this in onCreate:
> >
> > > Context c = Main_Activity.this;
> >
> > > That sure looks like a static access.
> >
> > > On Mar 12, 12:46 pm, Justin Anderson <[email protected]> wrote:
> > > > What does your code look like? The "this" keyword is not accessed
> > > > statically... it is a member of your class instance.
> >
> > > > Thanks,
> > > > Justin Anderson
> > > > MagouyaWare Developerhttp://sites.google.com/site/magouyaware
> >
> > > > On Mon, Mar 12, 2012 at 1:42 PM, bob <[email protected]>
> wrote:
> > > > > I tried accessing Main_Activity.this, but Eclipse says:
> >
> > > > > No enclosing instance of the type Main_Activity is accessible in
> > > > > scope.
> >
> > > > > I don't know why it won't let me do it.
> >
> > > > > On Mar 12, 11:44 am, Carlos Silva <[email protected]> wrote:
> > > > > > "this" on a class that extends Activity isn't simple enough?
> >
> > > > > > On Mon, Mar 12, 2012 at 17:39, bob <[email protected]>
> wrote:
> > > > > > > Why is there no static function like
> Activity.getCurrentActivity()?
> >
> > > > > > > Right now, I am saving the Activity in a static variable in
> > > onCreate
> > > > > > > so I can access it easily later on. I suspect there must be a
> > > better
> > > > > > > way.
> >
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