I’m trying to create a dynamic spinner… here is a solution to the problem.
I’m trying to create a dynamic spinner
What I want is a populate area spinner based on the city selected from the first spinner . I attached the necessary code. If anyone needs anything else, feel free to ask. Sorry, I’m new to this. Thank you 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 for 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>
Location selection .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
}
});
}
}
Log Cat
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 to set EGL_SWAP_BEHAVIOR on surface 0xaf035800, error=EGL_SUCCESS
07-08 09:24:09.468: I/Choreographer(2879): Skipped 40 frames! The application may be doing too much work on its 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 to 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): at java.util.AbstractList.remove(AbstractList.java:638)
07-08 09:24:18.211: E/AndroidRuntime(2879): at java.util.AbstractList$SimpleListIterator.remove(AbstractList.java:75)
07-08 09:24:18.211: E/AndroidRuntime(2879): at java.util.AbstractList.removeRange(AbstractList.java:658)
07-08 09:24:18.211: E/AndroidRuntime(2879): at java.util.AbstractList.clear(AbstractList.java:466)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.widget.ArrayAdapter.clear(ArrayAdapter.java:258)
07-08 09:24:18.211: E/AndroidRuntime(2879): at com.pixalstudio.navigationdrawer.LocationSelection$1.onItemSelected(LocationSelection.java:35)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.widget.AdapterView.fireOnSelected(AdapterView.java:914)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:903)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.widget.AdapterView.access$300(AdapterView.java:48)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:873)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.os.Handler.handleCallback(Handler.java:739)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.os.Handler.dispatchMessage(Handler.java:95)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.os.Looper.loop(Looper.java:135)
07-08 09:24:18.211: E/AndroidRuntime(2879): at android.app.ActivityThread.main(ActivityThread.java:5254)
07-08 09:24:18.211: E/AndroidRuntime(2879): at java.lang.reflect.Method.invoke(Native Method)
07-08 09:24:18.211: E/AndroidRuntime(2879): at java.lang.reflect.Method.invoke(Method.java:372)
07-08 09:24:18.211: E/AndroidRuntime(2879): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
07-08 09:24:18.211: E/AndroidRuntime(2879): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Please help me understand how to populate the area in spinner2 based on the city selected in spinner1.
Solution
@Override
public void onStart(){
super.onStart();
citySpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
String city = spinner.getSelectedItem().toString();
String name = String.format("%s_area", city);
Resources res = getResources();
int id = res.getIdentifier(name, "array", getPackageName());
String[] items = res.getStringArray(id);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android. R.layout.simple_spinner_item, items);
areaSpinner.setAdapter(adapter);
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
String[] items = new String[]{};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android. R.layout.simple_spinner_item, items);
areaSpinner.setAdapter(adapter);
}
});
}