I am trying to delete a record trough listview from database. I am somehow got suceed in removing the record from list but didn't find any help to delete it from database.
Below is the code of my adapter. Any help will be appreciated.
Thanks in advance.
public class Row_keyskill extends BaseAdapter implements View.OnClickListener {
private ArrayList<String> listName=new ArrayList<String>();
private Activity activity;
private Context context;
String id;
SQLiteDatabase db;
int position,position1;
public Row_keyskill(Activity activity, ArrayList<String> listName) {
super();
this.listName = listName;
this.activity = activity;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return listName.size();
}
#Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listName.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public void onClick(View v) {
Toast.makeText(context,"row item clicked"+listName.get(position),Toast.LENGTH_LONG).show();
/* int position = (Integer) v.getTag();
id = listName.get(position);
// listName.remove(position);
Log.e("Row_keyskill", "position id: "+id);
position1=position+1;
Log.e("Row_keyskill", "position1 id: "+position1);
db.execSQL("DELETE FROM USER_SKILLS WHERE U_SKILL_NAME ='" + id + "'");
// itemDelete();*/
}
public static class ViewHolder
{
public TextView txtName;
public ImageView btn_delete;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.rowdata_keyskill,null);
view.txtName = (TextView) convertView.findViewById(R.id.keyskill_row);
// view.btn_delete=(ImageView)convertView.findViewById(R.id.btn_delete);
// view.btn_delete.setTag(position);
convertView.setTag(view);
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.txtName.setText(listName.get(position));
//view.btn_delete.setOnClickListener(this);
ImageView btn_delete=(ImageView)convertView.findViewById(R.id.btn_delete);
btn_delete.setTag(position);
btn_delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//do something
int position = (Integer) v.getTag();
// SQLiteDatabase db = context.openOrCreateDatabase("JOB_PORTAL", Context.MODE_PRIVATE, null);
id = listName.get(position);
// listName.remove(position);
Log.e("Row_keyskill", "position id: " + id);
position1=position+1;
Log.e("Row_keyskill", "position1 id: "+position1);
listName.remove(position);
itemDelete(id);
//
//id = listName.get(position);
// db.execSQL("DELETE * FROM USER_SKILLS WHERE U_SKILL_NAME ='" + position + "'");
// db.delete("USER_SKILLS", new String("U_SKILL_NAME=?"), new String[]{id});
//or some other task*/
notifyDataSetChanged();
}
});
return convertView;
}
}
private void itemDelete(String id) {
//db = null;
try {
// db = context.openOrCreateDatabase("JOB_PORTAL", Context.MODE_PRIVATE,null);
// db.delete("USER_SKILLS", new String("U_SKILL_ID=?"), new String[]{id});
db.execSQL("DELETE FROM USER_SKILLS WHERE U_SKILL_NAME ='" + id + "'");
} catch (SQLException se) {
Toast.makeText(context, "Database error: " + se, Toast.LENGTH_LONG).show();
}
}
I'm new to android development and right now I'm trying to parse an J SON array into object and then save each object into a array list then display the array list with a array adapter. But, right now I can only get the array adapter to display the last element.
Here is the main class
public class Venue extends Activity {
Venue_Listing venue = new Venue_Listing();
ArrayList<Venue_Listing> venueList;
ListView listview;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listview = (ListView) findViewById(R.id.list);
new GetVenus().execute(URL);
venueList = new ArrayList<Venue_Listing>();
}
private class GetVenus extends AsyncTask<String, Void, Boolean> {
ProgressDialog dialog;
String data;
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(Venue.this);
dialog.setMessage("Loading, please wait");
dialog.show();
dialog.setCancelable(false);
}
protected Boolean doInBackground(String... url) {
try {
HttpGet httppost = new HttpGet(url[0]);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(httppost);
int status = response.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity entity = response.getEntity();
data = EntityUtils.toString(entity);
}
return true;
}
catch (ParseException e1) {
e1.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
return false;
}
protected void onPostExecute(Boolean result) {
dialog.cancel();
Venue_Listing_Adapter adapter = new
Venue_Listing_Adapter(getApplicationContext(),R.layout.venue_list_layout, venueList);
try {
JSONArray jarray = new JSONArray(data);
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
if (venue != null) {
venue.SET_ID(object.getString("venue_ID"));
venue.SET_NAME(object.getString("name"));
listview.setAdapter(adapter);
}
}
}
catch (JSONException e) {
e.printStackTrace();
}
}
}
}
This class holds all the J SON parse data
public class Venue_Listing {
private String ID;
private String NAME;
public Venue_Listing() {
}
public Venue_Listing(String ID, String NAME) {
super();
this.ID = ID;
this.NAME = NAME;
}
// setter & getter....
And here is what I have for my array adapter
public class Venue_Listing_Adapter extends ArrayAdapter<Venue_Listing> {
private ArrayList<Venue_Listing> objects;
public Venue_Listing_Adapter(Context context, int resource, ArrayList<Venue_Listing> objects) {
super(context, resource, objects);
this.objects = objects;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.venue_list_layout, null);
}
Venue_Listing i = objects.get(position);
if (i != null) {
TextView id = (TextView) v.findViewById(R.id.id);
TextView name = (TextView) v.findViewById(R.id.name);
if (id != null ){
id.setText(i.GET_ID());
}
if (name != null) {
name.setText(i.GET_NAME());
}
}
return v;
}
}
Any help would be appreciated
Thank you
Please print and check the values of 'venueList'.
You have not added values in 'venueList' object.
You need to create 'venue' object every time and add object 'venue' in 'venueList'. Hence you are not getting all items in list view.
The Code may go this way: -
Venue_Listing venue;
try {
JSONArray jarray = new JSONArray(data);
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
venue = new Venue_Listing();
if (object != null) {
venue.SET_ID(object.getString("venue_ID"));
venue.SET_NAME(object.getString("name"));
venueList.add(venue);
}
}
Venue_Listing_Adapter adapter = new Venue_Listing_Adapter(getApplicationContext(),R.layout.venue_list_layout, venueList);
listview.setAdapter(adapter);
}
catch (JSONException e) {
e.printStackTrace();
}
I have a listview in my main activity.In each row i have a image view,when i click that image view QuickAction(Like popover in ios) will appears.My request is, I want to setText the text from listview to the another Activity's edittext when i click the action item in the quick action.Please help..
Here is my Main Activity
public class ExampleActivity extends Activity {
private static final int ID_UP = 1;
private static final int ID_DOWN = 2;
private static final int ID_SEARCH = 3;
private static final int ID_INFO = 4;
private QuickAction quickAction;
private ActionItem nextItem;
private ActionItem prevItem;
private ActionItem searchItem;
private ListView view;
private ContactsAdapter adapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
view = (ListView) findViewById(R.id.listView1);
final Weather weather_data[] = new Weather[] { new Weather(R.drawable.icon, "Cloudy"),
new Weather(R.drawable.icon, "Showers"),
new Weather(R.drawable.icon, "Snow"),
new Weather(R.drawable.icon, "Storm"),
new Weather(R.drawable.icon, "Sunny")
};
adapter = new ContactsAdapter(this, R.layout.main1,
weather_data);
}
void functiontorun(View view1) {
quickAction = new QuickAction(this,QuickAction.HORIZONTAL);
nextItem = new ActionItem(ID_DOWN, "Next", getResources().getDrawable(
R.drawable.menu_down_arrow));
prevItem = new ActionItem(ID_UP, "Prev", getResources().getDrawable(
R.drawable.menu_up_arrow));
searchItem = new ActionItem(ID_SEARCH, "Find", getResources()
.getDrawable(R.drawable.menu_search));
// use setSticky(true) to disable QuickAction dialog being dismissed
// after an item is clicked
prevItem.setSticky(true);
nextItem.setSticky(true);
// add action items into QuickAction
quickAction.addActionItem(nextItem);
quickAction.addActionItem(prevItem);
quickAction.addActionItem(searchItem);
// Set listener for action item clicked
final int position1 = view.getPositionForView(view1);
quickAction
.setOnActionItemClickListener(new QuickAction.OnActionItemClickListener() {
#Override
public void onItemClick(QuickAction source, int pos,
int actionId) {
ActionItem actionItem = quickAction.getActionItem(pos);
if (actionId == ID_SEARCH) {
Intent i=new Intent(ExampleActivity.this,Second.class);
i.putExtra("position",position1 );
Log.v("position","po" +position1);
startActivity(i);
} else if (actionId == ID_INFO) {
Toast.makeText(getApplicationContext(),
"I have no info this time",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(),
actionItem.getTitle() + " selected",
Toast.LENGTH_SHORT).show();
}
}
});
quickAction.show(view1);
}
}
And my another activity
public class Second extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
EditText d1=(EditText) findViewById(R.id.editText1);
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
final int position = (Integer) bundle.get("position");
Log.v("position","po1 " +position);
ArrayList<Weather> array = new ArrayList<Weather>();
Log.v("position","po1 " +array);
}
}
}
contacts adapter:
public class ContactsAdapter extends ArrayAdapter{
Context context;
int layoutResourceId;
Weather data[] = null;
public ContactsAdapter(Context context, int layoutResourceId, Weather[] data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
WeatherHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new WeatherHolder();
holder.imgIcon = (ImageView)row.findViewById(R.id.imageView1);
holder.imgIcon.findViewById(R.id.imageView1).setOnClickListener(mBuyButtonClickListener);
holder.txtTitle = (TextView)row.findViewById(R.id.textView1);
//((ImageView) row.findViewById(R.id.im)).setOnClickListener(mBuyButtonClickListener);
row.setTag(holder);
}
else
{
holder = (WeatherHolder)row.getTag();
}
Weather weather = data[position];
holder.txtTitle.setText(weather.title);
holder.imgIcon.setImageResource(weather.icon);
return row;
}
static class WeatherHolder
{
ImageView imgIcon;
TextView txtTitle;
}
private OnClickListener mBuyButtonClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
((ExampleActivity) context).functiontorun(v);
}
};
}
private OnClickListener mBuyButtonClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
WeatherHolder holder = (WeatherHolder) v.getTag;
String string = holder.txtTitle .getText();
((ExampleActivity) context).functiontorun(string);
}
};
just pass the string to your activity and change the parameter of the functiontorun as string
I have been working on AutoCompleteTextView. I was able to get the suggestion and all in the drop down list as we type.
My question is: Can we highlight the typed character in the suggestion drop down list?
I have achieved the functionality. The solution is as follows:
AutoCompleteAdapter.java
public class AutoCompleteAdapter extends ArrayAdapter<String> implements
Filterable {
private ArrayList<String> fullList;
private ArrayList<String> mOriginalValues;
private ArrayFilter mFilter;
LayoutInflater inflater;
String text = "";
public AutoCompleteAdapter(Context context, int resource,
int textViewResourceId, List<String> objects) {
super(context, resource, textViewResourceId, objects);
fullList = (ArrayList<String>) objects;
mOriginalValues = new ArrayList<String>(fullList);
inflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return fullList.size();
}
#Override
public String getItem(int position) {
return fullList.get(position);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
// tvViewResourceId = (TextView) view.findViewById(android.R.id.text1);
String item = getItem(position);
Log.d("item", "" + item);
if (convertView == null) {
convertView = view = inflater.inflate(
android.R.layout.simple_dropdown_item_1line, null);
}
// Lookup view for data population
TextView myTv = (TextView) convertView.findViewById(android.R.id.text1);
myTv.setText(highlight(text, item));
return view;
}
#Override
public Filter getFilter() {
if (mFilter == null) {
mFilter = new ArrayFilter();
}
return mFilter;
}
private class ArrayFilter extends Filter {
private Object lock;
#Override
protected FilterResults performFiltering(CharSequence prefix) {
FilterResults results = new FilterResults();
if (prefix != null) {
text = prefix.toString();
}
if (mOriginalValues == null) {
synchronized (lock) {
mOriginalValues = new ArrayList<String>(fullList);
}
}
if (prefix == null || prefix.length() == 0) {
synchronized (lock) {
ArrayList<String> list = new ArrayList<String>(
mOriginalValues);
results.values = list;
results.count = list.size();
}
} else {
final String prefixString = prefix.toString().toLowerCase();
ArrayList<String> values = mOriginalValues;
int count = values.size();
ArrayList<String> newValues = new ArrayList<String>(count);
for (int i = 0; i < count; i++) {
String item = values.get(i);
if (item.toLowerCase().contains(prefixString)) {
newValues.add(item);
}
}
results.values = newValues;
results.count = newValues.size();
}
return results;
}
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
if (results.values != null) {
fullList = (ArrayList<String>) results.values;
} else {
fullList = new ArrayList<String>();
}
if (results.count > 0) {
notifyDataSetChanged();
} else {
notifyDataSetInvalidated();
}
}
}
public static CharSequence highlight(String search, String originalText) {
// ignore case and accents
// the same thing should have been done for the search text
String normalizedText = Normalizer
.normalize(originalText, Normalizer.Form.NFD)
.replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
.toLowerCase(Locale.ENGLISH);
int start = normalizedText.indexOf(search.toLowerCase(Locale.ENGLISH));
if (start < 0) {
// not found, nothing to to
return originalText;
} else {
// highlight each appearance in the original text
// while searching in normalized text
Spannable highlighted = new SpannableString(originalText);
while (start >= 0) {
int spanStart = Math.min(start, originalText.length());
int spanEnd = Math.min(start + search.length(),
originalText.length());
highlighted.setSpan(new ForegroundColorSpan(Color.BLUE),
spanStart, spanEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
start = normalizedText.indexOf(search, spanEnd);
}
return highlighted;
}
}
}
MainActivity.java
public class MainActivity extends Activity {
String[] languages = { "C", "C++", "Java", "C#", "PHP", "JavaScript",
"jQuery", "AJAX", "JSON" };
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
List<String> wordList = new ArrayList<String>();
Collections.addAll(wordList, languages);
AutoCompleteAdapter adapter = new AutoCompleteAdapter(this,
android.R.layout.simple_dropdown_item_1line,
android.R.id.text1,wordList);
AutoCompleteTextView acTextView = (AutoCompleteTextView) findViewById(R.id.languages);
acTextView.setThreshold(1);
acTextView.setAdapter(adapter);
}
}
Working like charm!
Enjoy!
I reckon that should be possible, provided you know the index/indices of the character(s) the user typed last. You can then use a SpannableStringBuilder and set a ForegroundColorSpan and BackgroundColorSpan to give the character(s) the appearance of a highlight.
The idea looks somewhat like this:
// start & end of the highlight
int start = ...;
int end = ...;
SpannableStringBuilder builder = new SpannableStringBuilder(suggestionText);
// set foreground color (text color) - optional, you may not want to change the text color too
builder.setSpan(new ForegroundColorSpan(Color.RED), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
// set background color
builder.setSpan(new BackgroundColorSpan(Color.YELLOW), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
// set result to AutoCompleteTextView
autocompleteTextview.setText(builder);
Note that the 'highlight' will remain as long as you don't type another character. You may want to remove the highlight when e.g. the user changes the cursor position in the AutoCompleteTextView, but I'll leave that up to you.
I know it's to late for answering this question , But as I personally battled to find the answer , finally I wrote it myself (with the help of the answer from #MH. ofcourse), so here it is :
First , You have to create a Custom ArrayAdapter :
public class AdapterAustocomplete extends ArrayAdapter<String> {
private static final String TAG = "AdapterAustocomplete";
String q = "";
public AdapterAustocomplete(Context context, int resource, List objects) {
super(context, resource, objects);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
String item = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
if (convertView == null) {
convertView =
// I'll use a custom view for each Item , this way I can customize it also!
G.inflater.from(getContext()).inflate(R.layout.textview_autocomplete, parent, false);
}
// Lookup view for data population
TextView myTv = (TextView) convertView.findViewById(R.id.txt_autocomplete);
int start = item.indexOf(q);
int end = q.length()+start;
SpannableStringBuilder builder = new SpannableStringBuilder(item);
builder.setSpan(new ForegroundColorSpan(Color.RED), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
myTv.setText(builder);
return convertView;
}
public void setQ(String q) {
this.q = q;
}
}
And in the Code that you want to set the adapter for AutoCompleteTextView ;
AutoCompleteTextView myAutoComplete = findViewById(its_id);
AdapterAustocomplete adapter_autoComplete = new AdapterAustocomplete(getActivity(), 0, items); // items is an arrayList of Strings
adapter_autoComplete.setQ(q);
myAutoComplete.setAdapter(adapter_autoComplete);
Thanks to vadher jitendra I wrote the same and fixed some bugs.
Changed a dropdown layout to own.
Added showing a full list when clicking inside AutoCompleteTextView.
Fixed a bug of freezing the list when showing (added a check for empty string in highlight).
row_dropdown.xml (item layout):
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/text1"
style="?android:attr/dropDownItemStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:ellipsize="marquee"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:singleLine="true"
android:textColor="#333333"
android:textSize="15sp"
tools:text="text"
tools:textAppearance="?android:attr/textAppearanceLargePopupMenu" />
To filter a list when typing we should implement ArrayAdapter. It depends on items (T class). You can later use AutoCompleteAdapter<String> or any data class you like.
AutoCompleteAdapter:
import android.content.Context;
import android.graphics.Typeface;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.StyleSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.TextView;
import androidx.annotation.IdRes;
import androidx.annotation.LayoutRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.text.Normalizer;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
public class AutoCompleteAdapter<T> extends ArrayAdapter<T> implements Filterable {
private Context context;
#LayoutRes
private int layoutRes;
#IdRes
private int textViewResId;
private ArrayList<T> fullList;
private ArrayList<T> originalValues;
private ArrayFilter filter;
private LayoutInflater inflater;
private String query = "";
public AutoCompleteAdapter(#NonNull Context context, #LayoutRes int resource, #IdRes int textViewResourceId, #NonNull List<T> objects) {
super(context, resource, textViewResourceId, objects);
this.context = context;
layoutRes = resource;
textViewResId = textViewResourceId;
fullList = (ArrayList<T>) objects;
originalValues = new ArrayList<>(fullList);
inflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return fullList.size();
}
#Override
public T getItem(int position) {
return fullList.get(position);
}
/**
* You can use either
* vadher jitendra method (getView)
* or get the method from ArrayAdapter.java.
*/
// #NotNull
// #Override
// public View getView(int position, View convertView, ViewGroup parent) {
// View view = convertView;
// T item = getItem(position);
// Log.d("item", "" + item);
// if (convertView == null) {
// convertView = view = inflater.inflate(layoutRes, null);
// }
// // Lookup view for data population
// TextView myTv = convertView.findViewById(textViewResId);
// myTv.setText(highlight(query, item));
// return view;
// }
#Override
public #NonNull
View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
return createViewFromResource(inflater, position, convertView, parent, layoutRes);
}
private #NonNull
View createViewFromResource(#NonNull LayoutInflater inflater, int position,
#Nullable View convertView, #NonNull ViewGroup parent, int resource) {
final View view;
final TextView text;
if (convertView == null) {
view = inflater.inflate(resource, parent, false);
} else {
view = convertView;
}
try {
if (textViewResId == 0) {
// If no custom field is assigned, assume the whole resource is a TextView
text = (TextView) view;
} else {
// Otherwise, find the TextView field within the layout
text = view.findViewById(textViewResId);
if (text == null) {
throw new RuntimeException("Failed to find view with ID "
+ context.getResources().getResourceName(textViewResId)
+ " in item layout");
}
}
} catch (ClassCastException e) {
Log.e("ArrayAdapter", "You must supply a resource ID for a TextView");
throw new IllegalStateException(
"ArrayAdapter requires the resource ID to be a TextView", e);
}
final T item = getItem(position);
text.setText(highlight(query, item.toString()));
// if (item instanceof CharSequence) {
// text.setText(highlight(query, (CharSequence) item));
// } else {
// text.setText(item.toString());
// }
return view;
}
#Override
public #NonNull
Filter getFilter() {
if (filter == null) {
filter = new ArrayFilter();
}
return filter;
}
private class ArrayFilter extends Filter {
private final Object lock = new Object();
#Override
protected FilterResults performFiltering(CharSequence prefix) {
FilterResults results = new FilterResults();
if (prefix == null) {
query = "";
} else {
query = prefix.toString();
}
if (originalValues == null) {
synchronized (lock) {
originalValues = new ArrayList<>(fullList);
}
}
if (prefix == null || prefix.length() == 0) {
synchronized (lock) {
ArrayList<T> list = new ArrayList<>(originalValues);
results.values = list;
results.count = list.size();
}
} else {
final String prefixString = prefix.toString().toLowerCase();
ArrayList<T> values = originalValues;
int count = values.size();
ArrayList<T> newValues = new ArrayList<>(count);
for (int i = 0; i < count; i++) {
T item = values.get(i);
if (item.toString().toLowerCase().contains(prefixString)) {
newValues.add(item);
}
}
results.values = newValues;
results.count = newValues.size();
}
return results;
}
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results.values != null) {
fullList = (ArrayList<T>) results.values;
} else {
fullList = new ArrayList<>();
}
if (results.count > 0) {
notifyDataSetChanged();
} else {
notifyDataSetInvalidated();
}
}
}
private static CharSequence highlight(#NonNull String search, #NonNull CharSequence originalText) {
if (search.isEmpty())
return originalText;
// ignore case and accents
// the same thing should have been done for the search text
String normalizedText = Normalizer
.normalize(originalText, Normalizer.Form.NFD)
.replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
.toLowerCase(Locale.ENGLISH);
int start = normalizedText.indexOf(search.toLowerCase(Locale.ENGLISH));
if (start < 0) {
// not found, nothing to do
return originalText;
} else {
// highlight each appearance in the original text
// while searching in normalized text
Spannable highlighted = new SpannableString(originalText);
while (start >= 0) {
int spanStart = Math.min(start, originalText.length());
int spanEnd = Math.min(start + search.length(),
originalText.length());
highlighted.setSpan(new StyleSpan(Typeface.BOLD), spanStart, spanEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
start = normalizedText.indexOf(search, spanEnd);
}
return highlighted;
}
}
}
In order to show dropdown list when clicked inside AutoCompleteTextView we need to override setOnTouchListener as described in https://stackoverflow.com/a/26036902/2914140. Lint also prints warnings, so we have to write a custom view:
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import androidx.appcompat.widget.AppCompatAutoCompleteTextView;
/*
Avoids a warning "Custom view `AutoCompleteTextView` has setOnTouchListener called on it but does not override performClick".
*/
public class AutoCompleteTV extends AppCompatAutoCompleteTextView {
public AutoCompleteTV(Context context) {
super(context);
}
public AutoCompleteTV(Context context, AttributeSet attrs) {
super(context, attrs);
}
public AutoCompleteTV(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
performClick();
}
return super.onTouchEvent(event);
}
#Override
public boolean performClick() {
super.performClick();
return true;
}
}
Then use it in 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:orientation="vertical">
<com.google.android.material.textfield.TextInputLayout
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.example.autocompletetextview1.AutoCompleteTV
android:id="#+id/languages"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:completionThreshold="1"
android:hint="language"
android:imeOptions="actionNext"
android:maxLines="1"
android:paddingLeft="10dp"
android:paddingTop="15dp"
android:paddingRight="10dp"
android:paddingBottom="15dp"
android:singleLine="true"
android:textColor="#333333"
android:textColorHint="#808080"
android:textSize="12sp" />
</com.google.android.material.textfield.TextInputLayout>
</LinearLayout>
I use TextInputLayout here for better decoration, in this case we have to add Material Design Components:
in build.gradle:
implementation 'com.google.android.material:material:1.3.0-alpha01'
and in styles.xml:
<style name="AppTheme" parent="Theme.MaterialComponents.Light.DarkActionBar">
...
MainActivity:
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.AutoCompleteTextView;
import androidx.appcompat.app.AppCompatActivity;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
String[] items = {"C", "C++", "Java", "C#", "PHP", "JavaScript", "jQuery", "AJAX", "JSON"};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
List<DataClass> wordList = new ArrayList<>();
for (int i = 0; i < items.length; i++) {
DataClass data = new DataClass(i, items[i]);
wordList.add(data);
}
AutoCompleteAdapter<DataClass> adapter = new AutoCompleteAdapter<>(this,
R.layout.row_dropdown, R.id.text1, wordList);
//adapter.setDropDownViewResource(R.layout.row_dropdown);
AutoCompleteTV acTextView = findViewById(R.id.languages);
acTextView.setThreshold(1);
acTextView.setAdapter(adapter);
acTextView.setText("Java");
acTextView.setOnTouchListener((v, event) -> {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
((AutoCompleteTextView) v).showDropDown();
v.requestFocus();
v.performClick(); // Added to avoid warning "onTouch lambda should call View#performClick when a click is detected".
}
return false;
}
);
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
EditText nameText = (EditText) findViewById(R.id.editText1);
name = nameText.getText().toString();
nameText.setText("");
EditText numberText = (EditText) findViewById(R.id.editText2);
number = numberText.getText().toString();
numberText.setText("");
person = new Person(name, number);
order.add(person);
PersonAdapter pa = new PersonAdapter(con, R.layout.row, order);
setListAdapter(pa);
}
});
}
#Override
protected void onListItemClick(ListView l, View v, final int position, long id) {
// TODO Auto-generated method stub
final int index = position;
AlertDialog.Builder aDialog = new AlertDialog.Builder(this);
aDialog.setTitle("What do you want??");
aDialog.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
order.remove(index);
PersonAdapter pa = new PersonAdapter(con, R.layout.row,
order);
setListAdapter(pa);
}
});
aDialog.setNeutralButton("Edit", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) con.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_dialog, (ViewGroup)findViewById(R.id.root_layout));
builder = new AlertDialog.Builder(con);
builder.setView(layout);
builder.setTitle("Fill EditText");
builder.setIcon(R.drawable.icon);
editNum = (EditText)findViewById(R.id.editNum);
editName = (EditText)findViewById(R.id.editName);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
name = editName.getText().toString();
number = editNum.getText().toString();
order.set(position, new Person(name,number));
PersonAdapter pa = new PersonAdapter(con, R.layout.row, order);
setListAdapter(pa);
}
});
builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
alertDialog = builder.create();
alertDialog.show();
}
});
aDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
AlertDialog ad = aDialog.create();
ad.show();
}
public PersonAdapter(Context context, int textViewResourceId,
ArrayList<Person> items) {
super(context, textViewResourceId, items);
this.items = items;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater) getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
Person p = items.get(position);
if (p != null) {
TextView tt = (TextView) v.findViewById(R.id.android_toptext);
TextView bt = (TextView) v.findViewById(R.id.android_bottomtext);
if (tt != null) {
tt.setText(p.getName());
}
if (bt != null) {
bt.setText("TEL : " + p.getNumber());
}
}
return v;
}
private String name;
private String number;
public Person(String name, String number) {
this.name = name;
this.number = number;
}
public String getName() {
return name;
}
public String getNumber() {
return number;
}
}
I am practicing Widget(exactly I am making custom dialog) and Listener In android . But I stop now because ".getText().toString();" makes error ... I can't understand.. T^T Please Help me... why it makes error?? I think It doesn't have problem
You should declare your EditText globally
EditText editName;
EditText editNum;
#Override
public void onCreate(Bundle savedInstanceState) {
...
}
.....
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) con.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_dialog, (ViewGroup)findViewById(R.id.root_layout));
builder = new AlertDialog.Builder(con);
builder.setView(layout);
builder.setTitle("Fill EditText modificated");
builder.setIcon(R.drawable.icon);
editName = (EditText)findViewById(R.id.editName);
editNum = (EditText)findViewById(R.id.editNum);