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/ 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/CABfabRgeWAZaagA%3DPCZoTDjvp9t8B_U_FxM6e%2Bbn3BgN0VwiQw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
