My bad... thanks for setting me straight. On Sunday, August 7, 2016 at 5:18:52 PM UTC+2, Steve Gabrilowitz wrote: > > toString() returns a string representation of an object which is not > necessarily the value of the object. your view.getTag() returns an object > which is already a String so all you have to do is cast it to string rather > than using toString() on it > > String buttStr = (String) view.getTag(); is what you need > > On Aug 7, 2016 3:35 AM, "Thomas Fazekas" <[email protected] > <javascript:>> wrote: > > Dear all, > > here is what I want to do : declare a whole bunch of buttons in the > activity_main.xml each of them having one custom tag (in this case it's > called "tag"). > All the buttons would share the same onClick handler, where I would use > this custom property value to construct some strings (a URL actually). > > Code excerpt : > > activity_main.xml > > <LinearLayout > android:orientation="horizontal" > android:layout_width="match_parent" > android:layout_height="wrap_content" > android:gravity="center"> > > <Button > android:layout_width="48dp" > android:layout_height="48dp" > android:text="o" > android:id="@+id/led0" > android:tag="paramValue1" > android:onClick="sendURL" /> > > <Button > android:layout_width="48dp" > android:layout_height="48dp" > android:text="o" > android:tag="paramValue2" > android:id="@+id/led1" > android:onClick="sendURL"/> > > .... > </LinearLyout> > > and then in the ActivityMain.java I would use this value : > > public class MainActivity extends AppCompatActivity { > > @Override > protected void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.activity_main); > } > > public void sendLed(View view){ > ... > String buttStr = view.getTag().toString(); > ... > } > } > > Now , is that in anyway possible ? > The above construct gets me an NPE. > > I am aware that I could use a switch statement (to compare the view.getId() > with the individual ids of the buttons) but that seems a lot of comparisons > for nothing (I would use that additional value "blindly", i.e. it doesn't > matter which button has been pressed) > > -- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > Visit this group at https://groups.google.com/group/android-developers. > To view this discussion on the web visit > https://groups.google.com/d/msgid/android-developers/fa4ae215-281e-4fcf-b929-005b59f2ef2f%40googlegroups.com > > <https://groups.google.com/d/msgid/android-developers/fa4ae215-281e-4fcf-b929-005b59f2ef2f%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > > >
-- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/2ed4bd2b-dab2-404d-bc33-bbe5ac7a5bf6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
