java - I am trying to create a dynamic spinner -
what want populate area spinner based on city selected first spinner. have attached necessary code. if need else please fell free ask. sorry new this. thank in advance.
select_location_layout.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#c51162" android:orientation="vertical" > <textview android:id="@+id/textview1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margintop="80dp" android:text="@string/selectcity" android:textappearance="?android:attr/textappearancemedium" /> <spinner android:id="@+id/cityspinner" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="10dp" android:spinnermode="dialog" /> <textview android:id="@+id/textview01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margintop="20dp" android:text="@string/selectarea" android:textappearance="?android:attr/textappearancemedium" /> <spinner android:id="@+id/areaspinner" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="10dp" android:spinnermode="dialog" /> </linearlayout> string.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">navigation drawer</string> <string name="hello_world">hello world!</string> <string name="action_settings">settings</string> <string name="drawer_open">open navigation drawer</string> <string name="drawer_close">close navigation drawer</string> <string name="selectcity">select city</string> <string name="selectarea">select area</string> <string-array name="draweritems"> <item>location</item> <item>ready delivery</item> <item>order cake</item> <item>about us</item> <item>setting</item> <item>login</item> <item>my orders</item> <item>my cart</item> <item>help</item> <item>contact us</item> <item>rate us</item> <item>share</item> </string-array> <string-array name="cities"> <item>ahmedabad</item> <item>baroda</item> <item>surat</item> <item>mumbai</item> <item>pune</item> <item>banglore</item> </string-array> <string-array name="ahmedabad_area"> <item>maninagar</item> <item>c.t.m</item> <item>c.g. road</item> <item>satellite</item> <item>s.g. highway</item> <item>navarangpura</item> </string-array> <string-array name="baroda_area"> <item>alkapuri</item> <item>fateganj</item> <item>jaeahar nagar</item> <item>karali</item> <item>mandavi</item> <item>masar road</item> </string-array> <string-array name="surat_area"> <item>athwa</item> <item>bajipura</item> <item>cenral colony</item> <item>hajira</item> <item>kamrej</item> <item>lajpor</item> </string-array> <string-array name="mumbai_area"> <item>adarsha nagar</item> <item>thane</item> <item>centacruz</item> <item>andheri</item> <item>varsova</item> <item>dadar</item> </string-array> <string-array name="pune_area"> <item>akurdi</item> <item>bavada</item> <item>chakan</item> <item>daund</item> <item>earth stn</item> <item>ganeshkhind</item> </string-array> <string-array name="banglore_area"> <item>indira nagar</item> <item>jay nagar</item> <item>tipsandra</item> <item>kora mangala</item> <item>rajaji nagar</item> <item>white field</item> </string-array> </resources> locationselection.java
package com.pixalstudio.navigationdrawer; import android.app.activity; import android.os.bundle; import android.view.view; import android.widget.adapterview; import android.widget.arrayadapter; import android.widget.spinner; import android.widget.spinneradapter; public class locationselection extends activity { protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.select_location_layout); spinner cityspinner = (spinner) findviewbyid(r.id.cityspinner); spinner areaspinner = (spinner) findviewbyid(r.id.areaspinner); arrayadapter<charsequence> adapter = arrayadapter.createfromresource( this, r.array.cities, android.r.layout.simple_spinner_item); adapter.setdropdownviewresource(android.r.layout.simple_dropdown_item_1line); cityspinner.setadapter(adapter); final arrayadapter<charsequence> adapter1 = arrayadapter .createfromresource(this, r.array.ahmedabad_area, android.r.layout.simple_spinner_item); areaspinner.setadapter(adapter1); cityspinner .setonitemselectedlistener(new adapterview.onitemselectedlistener() { @override public void onitemselected(adapterview<?> parent, view view, int position, long id) { adapter1.clear(); int stringarrayresource = 0; switch (position) { case 0: stringarrayresource = r.array.ahmedabad_area; break; } adapter1.addall(getresources().getstringarray( stringarrayresource)); adapter1.notifydatasetchanged(); } @override public void onnothingselected(adapterview<?> parent) { // todo auto-generated method stub } }); } } logcat
07-08 09:24:08.274: d/openglrenderer(2879): use egl_swap_behavior_preserved: true 07-08 09:24:08.278: d/(2879): hostconnection::get() new host connection established 0xb42d7740, tid 2879 07-08 09:24:08.754: d/atlas(2879): validating map... 07-08 09:24:09.145: d/libegl(2879): loaded /system/lib/egl/libegl_emulation.so 07-08 09:24:09.146: d/libegl(2879): loaded /system/lib/egl/libglesv1_cm_emulation.so 07-08 09:24:09.156: d/libegl(2879): loaded /system/lib/egl/libglesv2_emulation.so 07-08 09:24:09.166: d/(2879): hostconnection::get() new host connection established 0xaf039490, tid 2897 07-08 09:24:09.204: i/openglrenderer(2879): initialized egl, version 1.4 07-08 09:24:09.266: d/openglrenderer(2879): enabling debug mode 0 07-08 09:24:09.368: w/egl_emulation(2879): eglsurfaceattrib not implemented 07-08 09:24:09.368: w/openglrenderer(2879): failed set egl_swap_behavior on surface 0xaf035800, error=egl_success 07-08 09:24:09.468: i/choreographer(2879): skipped 40 frames! application may doing work on main thread. 07-08 09:24:18.176: w/egl_emulation(2879): eglsurfaceattrib not implemented 07-08 09:24:18.177: w/openglrenderer(2879): failed set egl_swap_behavior on surface 0xb43c6c20, error=egl_success 07-08 09:24:18.211: d/androidruntime(2879): shutting down vm 07-08 09:24:18.211: e/androidruntime(2879): fatal exception: main 07-08 09:24:18.211: e/androidruntime(2879): process: com.pixalstudio.navigationdrawer, pid: 2879 07-08 09:24:18.211: e/androidruntime(2879): java.lang.unsupportedoperationexception 07-08 09:24:18.211: e/androidruntime(2879): @ java.util.abstractlist.remove(abstractlist.java:638) 07-08 09:24:18.211: e/androidruntime(2879): @ java.util.abstractlist$simplelistiterator.remove(abstractlist.java:75) 07-08 09:24:18.211: e/androidruntime(2879): @ java.util.abstractlist.removerange(abstractlist.java:658) 07-08 09:24:18.211: e/androidruntime(2879): @ java.util.abstractlist.clear(abstractlist.java:466) 07-08 09:24:18.211: e/androidruntime(2879): @ android.widget.arrayadapter.clear(arrayadapter.java:258) 07-08 09:24:18.211: e/androidruntime(2879): @ com.pixalstudio.navigationdrawer.locationselection$1.onitemselected(locationselection.java:35) 07-08 09:24:18.211: e/androidruntime(2879): @ android.widget.adapterview.fireonselected(adapterview.java:914) 07-08 09:24:18.211: e/androidruntime(2879): @ android.widget.adapterview.dispatchonitemselected(adapterview.java:903) 07-08 09:24:18.211: e/androidruntime(2879): @ android.widget.adapterview.access$300(adapterview.java:48) 07-08 09:24:18.211: e/androidruntime(2879): @ android.widget.adapterview$selectionnotifier.run(adapterview.java:873) 07-08 09:24:18.211: e/androidruntime(2879): @ android.os.handler.handlecallback(handler.java:739) 07-08 09:24:18.211: e/androidruntime(2879): @ android.os.handler.dispatchmessage(handler.java:95) 07-08 09:24:18.211: e/androidruntime(2879): @ android.os.looper.loop(looper.java:135) 07-08 09:24:18.211: e/androidruntime(2879): @ android.app.activitythread.main(activitythread.java:5254) 07-08 09:24:18.211: e/androidruntime(2879): @ java.lang.reflect.method.invoke(native method) 07-08 09:24:18.211: e/androidruntime(2879): @ java.lang.reflect.method.invoke(method.java:372) 07-08 09:24:18.211: e/androidruntime(2879): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903) 07-08 09:24:18.211: e/androidruntime(2879): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698) please me know how can populate areas in spinner2 based on city selected in spinner1.
ok here working sample. took bit longer expected works. idea text of cityspinner , use resource id string array needed areaspinner. code handle item selection placed in onstart event fires once.
mainactivity.java
import android.app.activity; import android.os.bundle; import android.view.view; import android.widget.spinner; import android.widget.adapterview; import android.widget.adapterview.onitemselectedlistener; import android.widget.arrayadapter; import android.content.res.resources; import android.util.log; public class mainactivity extends activity { private string tag = "mainactivity"; private activity mactivity; private spinner mcityspinner; private spinner mareaspinner; @override protected void oncreate(bundle bundle) { super.oncreate(bundle); setcontentview(r.layout.activity_main); log.d(tag, "oncreate"); mactivity = this; mcityspinner = (spinner)findviewbyid(r.id.cityspinner); mareaspinner = (spinner)findviewbyid(r.id.areaspinner); arrayadapter<charsequence> adapter = arrayadapter.createfromresource(this, r.array.cities, android.r.layout.simple_spinner_item); adapter.setdropdownviewresource(android.r.layout.simple_dropdown_item_1line); mcityspinner.setadapter(adapter); } @override public void onstart(){ super.onstart(); log.d(tag, "onstart"); mcityspinner.setonitemselectedlistener(new onitemselectedlistener() { @override public void onitemselected(adapterview<?> parentview, view selecteditemview, int position, long id) { log.d(tag, "mcityspinner.onitemselected"); string city = mcityspinner.getselecteditem().tostring(); log.d(tag, string.format("city:%s", city)); string name = string.format("%s_area", city).tolowercase(); log.d(tag, string.format("name:%s", name)); string packagename = getpackagename(); log.d(tag, string.format("packagename:%s", packagename)); resources res = getresources(); int rid = res.getidentifier(name, "array", packagename); log.d(tag, string.format("rid:%d", rid)); string[] items = res.getstringarray(rid); arrayadapter<string> adapter = new arrayadapter<string>(mactivity, android.r.layout.simple_spinner_item, items); mareaspinner.setadapter(adapter); } @override public void onnothingselected(adapterview<?> parentview) { log.d(tag, "mcityspinner.onnothingselected"); string[] items = new string[]{}; arrayadapter<string> adapter = new arrayadapter<string>(mactivity, android.r.layout.simple_spinner_item, items); mareaspinner.setadapter(adapter); } }); } } activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#c51162" android:orientation="vertical" > <textview android:id="@+id/textview1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margintop="80dp" android:text="@string/selectcity" android:textappearance="?android:attr/textappearancemedium" /> <spinner android:id="@+id/cityspinner" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="10dp" android:spinnermode="dialog" /> <textview android:id="@+id/textview01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margintop="20dp" android:text="@string/selectarea" android:textappearance="?android:attr/textappearancemedium" /> <spinner android:id="@+id/areaspinner" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="10dp" android:spinnermode="dialog" /> </linearlayout> strings.xml
<string name="app_name">navigation drawer</string> <string name="hello_world">hello world!</string> <string name="action_settings">settings</string> <string name="drawer_open">open navigation drawer</string> <string name="drawer_close">close navigation drawer</string> <string name="selectcity">select city</string> <string name="selectarea">select area</string> <string-array name="draweritems"> <item>location</item> <item>ready delivery</item> <item>order cake</item> <item>about us</item> <item>setting</item> <item>login</item> <item>my orders</item> <item>my cart</item> <item>help</item> <item>contact us</item> <item>rate us</item> <item>share</item> </string-array> <string-array name="cities"> <item>ahmedabad</item> <item>baroda</item> <item>surat</item> <item>mumbai</item> <item>pune</item> <item>banglore</item> </string-array> <string-array name="ahmedabad_area"> <item>maninagar</item> <item>c.t.m</item> <item>c.g. road</item> <item>satellite</item> <item>s.g. highway</item> <item>navarangpura</item> </string-array> <string-array name="baroda_area"> <item>alkapuri</item> <item>fateganj</item> <item>jaeahar nagar</item> <item>karali</item> <item>mandavi</item> <item>masar road</item> </string-array> <string-array name="surat_area"> <item>athwa</item> <item>bajipura</item> <item>cenral colony</item> <item>hajira</item> <item>kamrej</item> <item>lajpor</item> </string-array> <string-array name="mumbai_area"> <item>adarsha nagar</item> <item>thane</item> <item>centacruz</item> <item>andheri</item> <item>varsova</item> <item>dadar</item> </string-array> <string-array name="pune_area"> <item>akurdi</item> <item>bavada</item> <item>chakan</item> <item>daund</item> <item>earth stn</item> <item>ganeshkhind</item> </string-array> <string-array name="banglore_area"> <item>indira nagar</item> <item>jay nagar</item> <item>tipsandra</item> <item>kora mangala</item> <item>rajaji nagar</item> <item>white field</item> </string-array> note: code animated hamburger menu
mainactivity.java
import android.app.activity; import android.os.bundle; import android.view.view; import android.widget.spinner; import android.widget.adapterview; import android.widget.adapterview.onitemselectedlistener; import android.widget.arrayadapter; import android.content.res.resources; import android.util.log; import android.support.v4.widget.drawerlayout; import java.util.arraylist; import java.util.linkedhashmap; import java.util.set; import org.json.jsonarray; import org.json.jsonobject; import android.widget.listview; import android.widget.framelayout; import android.widget.simpleexpandablelistadapter; import android.support.v7.app.actionbaractivity; import android.support.v7.app.actionbar; import android.support.v7.app.actionbardrawertoggle; public class mainactivity extends actionbaractivity { private string tag = "mainactivity"; private activity mactivity; private drawerlayout mdrawerlayout; private listview mlistview; private string[] mitems; private actionbardrawertoggle mactionbardrawertoggle; @override protected void oncreate(bundle bundle) { super.oncreate(bundle); setcontentview(r.layout.activity_main); log.d(tag, "oncreate"); mactivity = this; mitems = new string[]{"one", "two", "three"}; mdrawerlayout = (drawerlayout)findviewbyid(r.id.drawer); mlistview = (listview)findviewbyid(r.id.drawer_list); mlistview.setadapter(new arrayadapter(mactivity, android.r.layout.simple_list_item_1, android.r.id.text1, mitems)); mactionbardrawertoggle = new actionbardrawertoggle(mactivity, mdrawerlayout, r.string.drawer_open, r.string.drawer_close){ @override public void ondrawerclosed(view view) { super.ondrawerclosed(view); getsupportactionbar().settitle("ondrawerclosed"); invalidateoptionsmenu(); syncstate(); } @override public void ondraweropened(view drawerview) { super.ondraweropened(drawerview); getsupportactionbar().settitle("ondraweropened"); invalidateoptionsmenu(); syncstate(); } }; mdrawerlayout.setdrawerlistener(mactionbardrawertoggle); mactionbardrawertoggle.syncstate(); getsupportactionbar().setdisplayhomeasupenabled(true); getsupportactionbar().sethomebuttonenabled(true); mactionbardrawertoggle.syncstate(); } } activity_main.xml
<relativelayout android:layout_width="match_parent" android:layout_height="match_parent"> <framelayout android:id="@+id/drawer_frame" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_centerhorizontal="true" android:layout_centervertical="true" /> </relativelayout> <listview android:id="@+id/drawer_list" android:layout_width="240dp" android:layout_height="match_parent" android:layout_gravity="left" android:choicemode="singlechoice" /> </android.support.v4.widget.drawerlayout> styles.xml
<resources> <style name="appbasetheme" parent="theme.appcompat.light.darkactionbar"> </style> <style name="apptheme" parent="appbasetheme"> <item name="drawerarrowstyle">@style/drawerarrowstyle</item> </style> <style name="drawerarrowstyle" parent="widget.appcompat.drawerarrowtoggle"> <item name="spinbars">true</item> <item name="color">@android:color/white</item> </style> </resources>
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