android - How to get all edittext data from listview -


my listview have 19 rows , need edittext data listview , store arraylist. 

 btn.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view view) {               int itemcount = mlistview.getcount();             log.d("count", ""+itemcount);             final arraylist<string> collection = new arraylist<>();             for(int i=0; i<itemcount; i++){                  view1 = mlistview.getchildat(i);                  log.d("position: ", ""+view1);                 edittext tt = (edittext)view1.findviewbyid(r.id.etqty);                 value = tt.gettext().tostring();                       collection.add(value);             }              //int position = contractstoreadapter.getitem();             log.d("number", string.valueof(collection));          }     });

here error.

09-07 08:09:05.526 8669-8669/com.example.chintatt.cbi e/androidruntime: fatal exception: main                                                                         process: com.example.chintatt.cbi, pid: 8669                                                                         java.lang.nullpointerexception: attempt invoke virtual method 'android.view.view android.view.view.findviewbyid(int)' on null object reference                                                                             @ com.example.chintatt.cbi.fragment_orderstock$1.onclick(fragment_orderstock.java:107)                                                                             @ android.view.view.performclick(view.java:5198)                                                                             @ android.view.view$performclick.run(view.java:21147)                                                                             @ android.os.handler.handlecallback(handler.java:739)                                                                             @ android.os.handler.dispatchmessage(handler.java:95)                                                                             @ android.os.looper.loop(looper.java:148)                                                                             @ android.app.activitythread.main(activitythread.java:5417)                                                                             @ java.lang.reflect.method.invoke(native method)                                                                             @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)                                                                             @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616)

listview doesn't contain data, cause child view created every time comes display

you must have used adapter store data right? try info there. not listview adapter in data contains.

hope you

if u can tell how u storing data in adapter me further tell answer precisely


-

Comments

Post a Comment

Popular posts from this blog

serialization - Convert Any type in scala to Array[Byte] and back -

i have following question: i have variable value in program declared value. i want convert value byte array.. how can serialize byte array , back? found examples related other types such double or int, not any. this should need. it's pretty similar how 1 in java. import java.io.{bytearrayinputstream, bytearrayoutputstream, objectinputstream, objectoutputstream} object serialization extends app { def serialise(value: any): array[byte] = { val stream: bytearrayoutputstream = new bytearrayoutputstream() val oos = new objectoutputstream(stream) oos.writeobject(value) oos.close stream.tobytearray } def deserialise(bytes: array[byte]): = { val ois = new objectinputstream(new bytearrayinputstream(bytes)) val value = ois.readobject ois.close value } println(deserialise(serialise("my test"))) println(deserialise(serialise(list(1)))) println(deserialise(serialise(map(1 -> 2)))) println(deserialise(seri
Read more

matplotlib support failed in PyCharm on OSX -

any idea how fix ? how can debug might problem ? not seem : https://youtrack.jetbrains.com/issue/py-15520 i in console: python 2.6.9 (unknown, jul 14 2015, 19:46:31) [gcc 4.2.1 compatible apple llvm 6.0 (clang-600.0.39)] on darwin >>> import matplotlib.pyplot plt matplotlib support failed the backend : >>> import matplotlib >>> print(matplotlib.rcparams['backend']) macosx
Read more

python - Matplotlib: TypeError: 'AxesSubplot' object is not callable -

i new programming please pardon me if rookie mistake. i writing python script have defined functions create subplots of distributions. i have slider widget end user change value of variables(mu , sigma) , see effect on distribution. here's code import numpy np print np.__version__ import scipy print scipy.__version__ scipy.stats import norm, lognorm, uniform import matplotlib print matplotlib.__version__ import matplotlib.pyplot plt matplotlib.widgets import slider, button, radiobuttons, checkbuttons #####calculating mean , standard deviation##### global mu_a1 mu_a1 = 1 global mu_b1 mu_b1 = 10 global mu_c1 mu_c1 = -13 global sigma_a1 sigma_a1 = 0.14 global sigma_b1 sigma_b1 = 1.16 global sigma_c1 sigma_c1 = 2.87 mu_x01 = -11 sigma_x01 = 1.9 #####_____##### #####generating random data##### a1 = 0.75*mu_a1 + (1.25 - 0.75)*sigma_a1*np.random.sample(10000) b1 = 8*mu_b1 + (12 - 8)*sigma_b1*np.random.sample(10000) c1 = -12*mu_c1 + 2*sigma_c1*np.random.sample(10000)
Read more