You might also want to create your buttons with a loop in your code instead of in the layout file
On Aug 8, 2016 5:41 AM, "Thomas Fazekas" <[email protected]> wrote: > 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]> 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]. >> 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/ms >> gid/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 > <https://groups.google.com/d/msgid/android-developers/2ed4bd2b-dab2-404d-bc33-bbe5ac7a5bf6%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/CABfabRi8rXh1Z5Q6KnjM%3D3zO6Bfg6SWToW-Dp1jX5rnK4x0gyw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
