I want to create an Android Page which looks like this

I want to create an Android Page which looks like this - android

I am beginner Android Developer. I want to create an Android Page which will dynamically display Three things 1. Question No. 2. Your Answer 3. Right Answer. How can I do this? It should look like this and can grow dynamically

What about something like this (Uses a listview):
Mainactivity:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private ArrayList<Question> questionArrayList;
private void fillList(){
questionArrayList = new ArrayList<>();
for (int i = 0; i < 12; i++) {
questionArrayList.add(new Question(i,"myans","yourans"));
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fillList();
ListView mlIstView = (ListView)findViewById(R.id.mListview);
QuestionAdapter adapter = new QuestionAdapter(this,R.layout.listviewlayout,questionArrayList);
mlIstView.setAdapter(adapter);
}
}
Question.java
public class Question {
private int numberOfQuestion;
private String yourAnswer;
private String correctAnswer;
public Question(int numberOfQuestion, String yourAnswer, String correctAnswer) {
this.numberOfQuestion = numberOfQuestion;
this.yourAnswer = yourAnswer;
this.correctAnswer = correctAnswer;
}
public int getNumberOfQuestion() {
return numberOfQuestion;
}
public String getYourAnswer() {
return yourAnswer;
}
public String getCorrectAnswer() {
return correctAnswer;
}
}
QuestionAdapter
import android.content.Context;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by waro on 6/4/17.
*/
public class QuestionAdapter extends ArrayAdapter<Question> {
private ArrayList<Question> arrayList;
public QuestionAdapter(#NonNull Context context, #LayoutRes int resource, #NonNull ArrayList<Question> objects) {
super(context, resource, objects);
arrayList = objects;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
if(convertView == null){
convertView = LayoutInflater.from(getContext()).inflate(R.layout.listviewlayout,parent,false);
}
Question question = arrayList.get(position);
TextView questiontv = (TextView)convertView.findViewById(R.id.question);
TextView yourans = (TextView)convertView.findViewById(R.id.yourans);
TextView correctans = (TextView)convertView.findViewById(R.id.correctans);
questiontv.setText(Integer.toString(question.getNumberOfQuestion()));
yourans.setText(question.getYourAnswer());
correctans.setText(question.getCorrectAnswer());
return convertView;
}
}
activity_mail.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.suprentive.waro.myapplication.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top"
android:id="#+id/mLinearLayout">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Question"
android:layout_weight="1"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Your answer"
android:layout_weight="1"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Right answer"
android:layout_weight="1"/>
</LinearLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/mListview"
android:layout_below="#id/mLinearLayout">
</ListView>
</RelativeLayout>
listviewlayout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/question"
android:layout_weight="1"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/yourans"
android:layout_weight="1"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text=""
android:id="#+id/correctans"
android:layout_weight="1"/>
</LinearLayout>
Result
Hopefully this helps you out.

Related

Having issue with designing comment section

I am trying to make Popup Dialog Comment Section.
In this Comment section i done almost all things but facing new problem.
Here i am using Dialog for Show and add new comment but when user click on Enter a Comment (Edittext). It gets hide under Keyboard. So it will be problematic for user to post new comment.
Here My Xml File :
Popup.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="wrap_content"
android:background="#drawable/dialog_bg"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/popup_rcv"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="bottom">
<EditText
android:id="#+id/new_comment_et"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="Please enter Comment" />
<Button
android:id="#+id/comment_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Thank you in Advance.

Try this
dialog_layout
<?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="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/popup_rcv"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:orientation="horizontal">
<EditText
android:id="#+id/new_comment_et"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="Please enter Comment" />
<Button
android:id="#+id/comment_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit" />
</LinearLayout>
</LinearLayout>
Activity
import android.app.Dialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import java.util.ArrayList;
public class HomeActivity extends AppCompatActivity {
RecyclerView additionalDataList;
ArrayList<String> arrayList = new ArrayList<>();
DataAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Dialog dialog = new Dialog(this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.dialog_layout);
Window window = dialog.getWindow();
window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
window.setGravity(Gravity.CENTER);
dialog.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
EditText edtComment = dialog.findViewById(R.id.new_comment_et);
Button btnComment = dialog.findViewById(R.id.comment_btn);
additionalDataList = dialog.findViewById(R.id.popup_rcv);
additionalDataList.setLayoutManager(new LinearLayoutManager(this));
additionalDataList.setHasFixedSize(true);
addDataToList();
btnComment.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!TextUtils.isEmpty(edtComment.getText().toString().trim())) {
arrayList.add(0, edtComment.getText().toString().trim());
edtComment.setText("");
adapter.notifyDataSetChanged();
}
}
});
adapter = new DataAdapter(this, arrayList);
additionalDataList.setAdapter(adapter);
dialog.show();
}
private void addDataToList() {
for (int i = 0; i < 5; i++) {
arrayList.add("Comment :" + i);
}
}
}
DataAdapter
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.ArrayList;
public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
Context context;
ArrayList<String> arrayList = new ArrayList<>();
public DataAdapter(Context context, ArrayList<String> arrayList) {
this.context = context;
this.arrayList = arrayList;
}
#Override
public DataAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.test, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.title.setText(arrayList.get(position));
}
#Override
public int getItemCount() {
return arrayList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView title;
public ViewHolder(View itemView) {
super(itemView);
title = itemView.findViewById(R.id.additionalInfoTitle);
}
}
}
OUTPUT

Custom ListView doen't show

Can someone tell me what mistake i am making while making a custom listview because it doesnt show any data when using a custom adapter. While it works on a simple arrayadapter i do't get it is there some mistake in my customly made adapter??
This is the my main xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".SubCategories"
android:weightSum="10">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:gravity="center"
android:layout_weight="1">
<TextView
android:gravity="center"
android:id="#+id/suitablecategory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Services"
android:textStyle="bold"
android:textAppearance="#android:style/TextAppearance.Large" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:gravity="center"
android:layout_weight="1">
<Spinner
android:id="#+id/Spin"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:gravity="center"
android:layout_weight="8">
<ListView
android:id="#+id/SubListView"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
</LinearLayout>
This is my row item 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="horizontal"
android:weightSum="2">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="#+id/CustomListItemName"
android:layout_gravity="center"
android:hint="Name"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="#android:style/TextAppearance.Medium"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<EditText
android:hint="Enter Price"
android:layout_gravity="center"
android:id="#+id/CustomListItemPrice"
android:inputType="number"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
This is my customly made adapter
package application.fyp.com.myfypapplication;
import android.app.Activity;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class PriceListAdapter extends ArrayAdapter<String> {
private Context context;
private List<String> items;
public PriceListAdapter(Context context, List<String> list) {
super(context, R.layout.custom_price_listview,R.id.CustomListItemName,list);
this.context = context;
this.items = list;
}
#Override
public int getCount() {
return 0;
}
#Nullable
#Override
public String getItem(int position) {
return super.getItem(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.custom_price_listview, parent,false);
TextView name = convertView.findViewById(R.id.CustomListItemName);
EditText price = convertView.findViewById(R.id.CustomListItemPrice);
String it = items.get(position);
name.setText(it);
return convertView;
}
}
This is my main class where i am intiallizing and setting the listview using the adapter
package application.fyp.com.myfypapplication;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class SubCategories extends AppCompatActivity {
private Spinner spinner;
private ListView lv;
private Button addsc;
private PriceListAdapter priceadapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sub_categories);
spinner=(Spinner)findViewById(R.id.Spin);
lv = findViewById(R.id.SubListView);
List<String> subCategoryList = new ArrayList<>();
subCategoryList.add("A");
subCategoryList.add("B");
subCategoryList.add("C");
subCategoryList.add("D");
priceadapter = new PriceListAdapter(SubCategories.this, subCategoryList);
lv.setAdapter(priceadapter);
}

In you adapter, you must change following:
#Override
public int getCount() {
// return 0; // This is what you have now
return this.items.size(); // This is what it must be
}
getCount method is intended to return the number of items in the list view.

there are no any display on listView with baseadapter

every one,
I am a beginning learner on android system ,
I create a small app that could get specific data , like foreign exchange rate from bank website ,
this app uses Jsoup , ListView , BaseAdapter etc...
finally , the only problem is the listView has no any display ,
could any one tell me , how to fix it.
Thanks.
Category.java
public class Category
{
String bank_name;
String page_url;
Category(String bank_name,String url)
{
this.bank_name=bank_name;
this.page_url=url;
}
#Override
public String toString()
{
return bank_name;
}
}
MainActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.content.*;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends Activity
{
ArrayList<Category> items;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
items=new ArrayList<Category>();
items.add(new Category("台灣銀行","http://rate.bot.com.tw/Pages/Static/UIP003.zh-TW.htm"));
ArrayAdapter<Category> adapter = new ArrayAdapter<Category>(this , android.R.layout.simple_list_item_1 ,items);
ListView lv = (ListView)findViewById(R.id.lv);
lv.setAdapter(adapter);
lv.setOnItemClickListener(itemClick);
}
OnItemClickListener itemClick = new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> av , View v , int position , long id)
{
Category category = items.get(position);
Intent intent = new Intent();
intent.setClass(MainActivity.this , RateActivity.class );
intent.putExtra("bank_name", category.bank_name);
intent.putExtra("page_url" , category.page_url);
startActivity(intent);
}
};
RateBean.java
public class RateBean
{
private String currency;
private String cashBuy;
private String cashSold;
private String spotBuy;
private String spotSold;
public RateBean()
{
currency = "";
cashBuy = "";
cashSold = "";
spotBuy = "";
spotSold = "";
}
public RateBean(String [] strArr)
{
this.currency=strArr[0];
this.cashBuy=strArr[1];
this.cashSold=strArr[2];
this.spotBuy=strArr[3];
this.spotSold=strArr[4];
}
public RateBean(String currency , String cashBuy , String cashSold , String spotBuy ,String spotSold)
{
setCurrency(currency);
setCashBuy(cashBuy);
setCashSold(cashSold);
setSpotBuy(spotBuy);
setSpotSold(spotSold);
}
//Currency setter and getter
public void setCurrency(String currency)
{
this.currency = currency ;
}
public String getCurrency()
{
return currency;
}
//Cash buy setter and getter
public void setCashBuy(String cashBuy)
{
this.cashBuy = cashBuy;
}
public String getCashBuy()
{
return cashBuy;
}
//Cash sold setter and getter
public void setCashSold(String cashSold)
{
this.cashSold = cashSold;
}
public String getCashSold()
{
return cashSold;
}
//Spot buy setter and getter
public void setSpotBuy(String spotBuy)
{
this.spotBuy = spotBuy;
}
public String getSpotBuy()
{
return spotBuy;
}
//Spot sold setter and getter
public void setSpotSold(String spotSold)
{
this.spotSold = spotSold;
}
public String getSpotSold()
{
return spotSold;
}
}
RateActivity.java
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.util.ArrayList;
public class RateActivity extends ListActivity
{
Context context ;
ArrayList<RateBean> rateBean_item;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_rate_show);
TextView updateTime = (TextView)findViewById(R.id.updateTime_textView);
Intent intent = getIntent();
String category = intent.getStringExtra("bank_name");
String page_url = intent.getStringExtra("page_url");
setTitle(category);
context=this;
ConnectThread thread = new ConnectThread(context , rateBean_item , page_url , updateTime);
thread.start();
}
public class ConnectThread extends Thread
{
Context context;
ArrayList<RateBean> rateBean_item;
String page_url ;
TextView updateTime;
RateAdapter adapter;
RateBean rateBean;
int i =0;
public ConnectThread(Context context , ArrayList<RateBean> rateBean_item , String page_url , TextView updateTime )
{
this.context=context;
this.rateBean_item=rateBean_item;
this.page_url=page_url;
this.updateTime=updateTime;
}
#Override
public void run()
{
try
{
String currency="";
String cashBuy="";
String cashSold="";
String spotBuy="";
String spotSold="";
Document doc = Jsoup.connect(page_url).get();
rateBean_item = new ArrayList<>();
String temp=doc.select("td[style=width:326px;text-align:left;vertical-align:top;color:#0000FF;font-size:11pt;font-weight:bold;]").text();
String time=temp.substring(12);
updateTime.setText("匯率更新時間：\n" + time);
for( Element title:doc.select("td.titleLeft"))
{
currency=title.text();
if( i < doc.select("td.decimal").size())
{
cashBuy=doc.select("td.decimal").eq(i++).text();
cashSold=doc.select("td.decimal").eq(i++).text();
spotBuy=doc.select("td.decimal").eq(i++).text();
spotSold=doc.select("td.decimal").eq(i++).text();
rateBean = new RateBean( a , b , c ,d , e );
rateBean_item.add(rateBean);
}
}
adapter = new RateAdapter(context , rateBean_item);
setListAdapter(adapter);
adapter.notifyDataSetChanged();
}
catch( Exception exception )
{
exception.printStackTrace();
}
}
}
}
RateAdapter.java
import java.util.ArrayList;
import android.util.Log;
import android.widget.BaseAdapter;
import android.view.*;
import android.widget.*;
import android.content.*;
public class RateAdapter extends BaseAdapter
{
private LayoutInflater inflater;
private ArrayList<RateBean> list ;
public RateAdapter()
{
}
public RateAdapter(Context context , ArrayList<RateBean> list )
{
this.inflater = LayoutInflater.from(context);
this.list = list;
}
#Override
public int getCount()
{
return list.size();
}
#Override
public Object getItem(int position)
{
return list.get(position);
}
#Override
public long getItemId(int position)
{
return position;
}
public static class ViewHolder
{
TextView currency_name;
TextView cash_buy;
TextView cash_sold;
TextView spot_buy;
TextView spot_sold;
}
#Override
public View getView( int position , View convertView , ViewGroup parent)
{
ViewHolder holder;
if(convertView == null)
{
convertView = inflater.inflate(R.layout.rate_item , null);
holder = new ViewHolder();
holder.currency_name = (TextView)convertView.findViewById(R.id.xml_currency);
holder.cash_buy = (TextView)convertView.findViewById(R.id.xml_cashBuy);
holder.cash_sold = (TextView)convertView.findViewById(R.id.xml_cashSold);
holder.spot_buy = (TextView)convertView.findViewById(R.id.xml_spotBuy);
holder.spot_sold = (TextView)convertView.findViewById(R.id.xml_spotSold);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder)convertView.getTag();
}
RateBean rateItem = list.get(position);
holder.currency_name.setText(rateItem.getCurrency());
holder.cash_buy.setText(rateItem.getCashBuy());
holder.cash_sold.setText(rateItem.getCashSold());
holder.spot_buy.setText(rateItem.getSpotBuy());
holder.spot_sold.setText(rateItem.getSpotSold());
return convertView;
}
}
activity_main.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/title_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="銀行查詢選擇"/>
<ListView
android:id="#+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
activity_rate_show.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/updateTime_textView"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="updateTime"/>
<Button
android:id="#+id/fresh_button"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:onClick="onClick"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/button_fresh"/>
</LinearLayout>>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.5"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/currency"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/cash_buy"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/cash_sold"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/spot_buy"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/spot_sold"/>
</LinearLayout>
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</LinearLayout>
rate_item.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/xml_currency"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.25"
android:textAppearance="?android:attr/textAppearanceLarge"
android:hint="text"/>
<TextView
android:id="#+id/xml_cashBuy"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_cashSold"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_spotBuy"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_spotSold"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
</LinearLayout>

<ListView
android:id="#+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Your listview needs a height, it cannot be wrap_content. Give it a height like 500dp or match_parent.

listview item is not added on button click

I have an issue with adapter adding data to listview on button click.
I have a activity called createteam that has name and email edittext and a createplayer button. On click createplayer button, the name and email should be added to list view.
I want to use an adapter for doing that(so that I can learn).
Update:
Onclicking the button the the first entry gets added but when I fill in the
edittexts again, the listview does get updated. I am notifying the adapter when I update
the data but only first entry gets and remains added to list view
create_team.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:id="#+id/teamname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/blue"
android:hint="Team Name"
android:gravity="center"
android:textStyle="bold">
</EditText>
<Button
android:id="#+id/addplayer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/blue"
android:text="Add Player"
android:layout_gravity="center"
android:textStyle="bold">
</Button>
<LinearLayout
android:id="#+id/view_addplayer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<Button
android:id="#+id/createplayer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/red"
android:text="Create Player"
android:layout_gravity="center"
android:textStyle="bold">
</Button>
<EditText
android:id="#+id/name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/blue"
android:hint="Name"
android:gravity="center"
android:textStyle="bold">
</EditText>
<EditText
android:id="#+id/email"
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/blue"
android:hint="Email "
android:textStyle="bold"
android:gravity="center">
</EditText>
</LinearLayout>
<ListView
android:id="#+id/android:list"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
</ScrollView>
add_player_listview.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:orientation="horizontal"
android:weightSum="2">
<TextView android:id="#+id/name"
android:textSize="20sp"
android:textStyle="bold"
android:color="#color/blue"
android:textColor="#FFFF00"
android:layout_width="wrap_content"
android:layout_height="50dp"/>
<TextView android:id="#+id/email"
android:textSize="15sp"
android:textStyle="bold"
android:color="#color/mustard"
android:layout_width="wrap_content"
android:layout_height="50dp"/>
</LinearLayout>
CreateTeamActivity.java
package com.recscores.android;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TableLayout;
import android.widget.Toast;
import com.recscores.android.PlayerInfo;
public class CreateTeamActivity extends ListActivity {
Button createPlayer;
EditText Email;
EditText Name;
private ArrayList<PlayerInfo> newList;
private PlayerAddAdapter newAdpt;
private int i = 0;
private ListView lv;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create_team);
newList = new ArrayList<PlayerInfo>();
// CREATE TEAM
getWindow().setBackgroundDrawableResource(R.drawable.app_background2);
createPlayer = (Button)findViewById(R.id.createplayer);
Email = (EditText)findViewById(R.id.email);
Name = (EditText)findViewById(R.id.name);
lv = (ListView)findViewById(android.R.id.list);
newAdpt = new PlayerAddAdapter(CreateTeamActivity.this,android.R.id.list,newList);
lv.setAdapter(newAdpt);
createPlayer.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// newList = new ArrayList<PlayerInfo>();
PlayerInfo info = new PlayerInfo();
info.SetName(Name.getText().toString());
info.SetEmail(Email.getText().toString());
newList.add(info);
newAdpt.notifyDataSetChanged();
//Thread.sleep(2000);
Name.setText("");
Email.setText("");
}
});
}
}
PlayerAddAdapter.java
package com.recscores.android;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class PlayerAddAdapter extends ArrayAdapter<PlayerInfo> {
private Activity activity;
//private final Context mContext;
private ArrayList<PlayerInfo> items;
public PlayerAddAdapter(Activity a, int textViewResourceId, ArrayList<PlayerInfo> items){
super(a,textViewResourceId,items);
this.items=items;
this.activity = a;
}
public static class ViewHolder{
public TextView name;
public TextView email;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
ViewHolder holder;
if (v == null) {
LayoutInflater vi =
(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vi.inflate(R.layout.add_player_listview, null);
holder = new ViewHolder();
holder.name = (TextView)v.findViewById(R.id.name);
holder.email = (TextView)v.findViewById(R.id.email);
v.setTag(holder);
}
else
holder=(ViewHolder)v.getTag();
final PlayerInfo custom = items.get(position);
if (custom != null) {
**holder.name.setText(custom.GetName());
holder.email.setText(custom.GetEmail());
}
return v;
}
}
PlayerInfo.java
package com.recscores.android;
public class PlayerInfo {
private String name="";
private String email="";
public void SetName(String name){
this.name = name;
}
public String GetName(){
return this.name;
}
public void SetEmail(String email){
this.email = email;
}
public String GetEmail(){
return this.email;
}
}

LayoutInflater vi =(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.add_player_listview, null);
Change your code like this. You are not setting values to v variable.

onClick of your button call list.notifyDataSetChanged(). It will refresh your list.
Incase if doesn't work just check getCount() of your adapter what value it is returning. If it is returning 0 your list will not show any data even you call list.notifyDataSetChanged().
Make an arrayList in your adapter and add new items into that. and from getCount() return size of arrayList.

Restarting application when try to scroll the listview

I am developing the program that used ListActivity. So, when i scroll the listview to down, it cause to restart application and start from first activity. My code is as follows :
package com.daarkoob.food;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.Window;
import java.util.ArrayList;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class FoodListActivity extends ListActivity {
private ArrayList<Food> M_foods = new ArrayList<FoodListActivity.Food>();
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.foodlist);
SQLiteDatabase sqliteDatabase = SQLiteDatabase.openOrCreateDatabase(
"/data/data/" + this.getPackageName() + "/data.db", null);
Cursor cursor = sqliteDatabase.rawQuery("SELECT * FROM FOOD", null);
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
M_foods.add(new Food(cursor.getString(2), cursor.getString(1)));
cursor.moveToNext();
}
FoodAdapter adapter = new FoodAdapter(this);
setListAdapter(adapter);
cursor.close();
sqliteDatabase.close();
}
public class Food {
public Food(String foodName, String foodType) {
this.M_foodName = foodName;
this.M_foodType = foodType;
}
String M_foodName;
String M_foodType;
}
public class FoodAdapter extends ArrayAdapter<Food> {
private Context M_context = null;
public FoodAdapter(Context context) {
super(context, R.layout.foodlist_view_item, M_foods);
this.M_context = context;
}
#Override
public View getView(final int position, View convertView,
ViewGroup parent) {
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) M_context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(
R.layout.foodlist_view_item, parent, false);
}
TextView textView = (TextView) convertView
.findViewById(R.id.foodlist_view_item_textview);
textView.setText(M_foods.get(position).M_foodName);
return convertView;
}
}
}
And the foodlist_view_item.xml is :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/border"
android:orientation="vertical" >
<TextView
android:id="#+id/foodlist_view_item_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:gravity="right|center_vertical"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#android:color/black"
android:textStyle="bold" />
</RelativeLayout>
and the foodlist.xml is as follows :
<?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="#drawable/background"
android:orientation="vertical" >
<TextView
android:id="#+id/foodlist_title_bar"
android:layout_width="match_parent"
android:layout_height="40dip"
android:background="#drawable/textlines"
android:gravity="right|center_vertical"
android:text="#string/foodlist_titlebar_text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:cacheColorHint="#android:color/transparent"
android:dividerHeight="1dip" >
</ListView>
</LinearLayout>
What thing is wrong ? Why restarting occurs ?
Thanks in advance :)

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