Develop Reference

Adding Header in ListView Android - android

Currently my xml code for listview is as below:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ListView
android:id="#+id/listView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" >
</ListView>
</LinearLayout>
Now after each 5th item, I want to add a static header. So it is fixed. The xml code for the header is as below:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="#+id/list_header_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="2dip"
android:paddingBottom="2dip"
android:background="#008000"
android:textColor="#android:color/white"
android:paddingLeft="5dip"
style="?android:attr/listSeparatorTextViewStyle" />
</LinearLayout>
Now how do I merge both? There are online articles on adding headers to list and section list view etc to do it programmatically. But mine is not so complicated.
It is fixed, after every fifth item in the list view, add a header. Any idea how I could merge the both set of codes above?

Make a new project with 2 activities
In activity_main1.xml add this code
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TextView
android:id="#+id/text"
android:layout_height="50dp"
android:gravity="center_vertical"
android:text="text"
android:visibility="visible"
android:layout_width="fill_parent"
android:textColor="#FF000000"
android:background="#FFFFFFFF" />
</LinearLayout>
In activity_main2.xml add this code
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TextView
android:id="#+id/textSeparator"
android:layout_height="wrap_content"
android:gravity="center"
android:text="text"
android:visibility="visible"
android:layout_width="fill_parent"
android:textColor="#FFFFFFFF"
android:background="#000" />
</LinearLayout>
In your MainActivity.java file add this
public class MainActivity extends ListActivity implements OnTouchListener{
private MyCustomAdapter mAdapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mAdapter = new MyCustomAdapter();
for (int i = 1; i < 50; i++) {
mAdapter.addItem("ListView item " + i);
if (i % 5 == 0) {
mAdapter.addSeparatorItem("Header " + i);
}
}
setListAdapter(mAdapter);
}
//Adapter Class
private class MyCustomAdapter extends BaseAdapter {
private static final int TYPE_ITEM = 0;
private static final int TYPE_SEPARATOR = 1;
private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1;
private ArrayList<String> mData = new ArrayList<String>();
private LayoutInflater mInflater;
private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>();
public MyCustomAdapter() {
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void addItem(final String item) {
mData.add(item);
notifyDataSetChanged();
}
public void addSeparatorItem(final String item) {
mData.add(item);
// save separator position
mSeparatorsSet.add(mData.size() - 1);
notifyDataSetChanged();
}
#Override
public int getItemViewType(int position) {
return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
}
#Override
public int getViewTypeCount() {
return TYPE_MAX_COUNT;
}
public int getCount() {
return mData.size();
}
public String getItem(int position) {
return mData.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
int type = getItemViewType(position);
System.out.println("getView " + position + " " + convertView + " type = " + type);
if (convertView == null) {
holder = new ViewHolder();
switch (type) {
case TYPE_ITEM:
convertView = mInflater.inflate(R.layout.activity_main1, null);
holder.textView = (TextView)convertView.findViewById(R.id.text);
break;
case TYPE_SEPARATOR:
convertView = mInflater.inflate(R.layout.activity_main2, null);
holder.textView = (TextView)convertView.findViewById(R.id.textSeparator);
break;
}
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
holder.textView.setText(mData.get(position));
return convertView;
}
}
public static class ViewHolder {
public TextView textView;
}
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
return false;
}
}
Do Ctrl+Shift+O then run it

To create a list with section or header refer this [http://danielme.com/tip-android-27-listview-con-secciones-o-cabeceras/][1]
[1]: http://danielme.com/tip-android-27-listview-con-secciones-o-cabeceras/ .

Related

I am coding a listView that gets the data from mySQL Server.
I have created the followings classes.
Class ListView. It has two contractors all in Strings. And I sat getters and setters.
I believe I have a problem with the Adapter its self. I can click on more than one option. While I have created the custom adapter in the layout as the followings:
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/RG_Adapter"
android:layoutDirection="rtl"
android:orientation="horizontal">
<RadioButton
android:id="#+id/TRIP_NAME"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:textAlignment="center"
android:textSize="25sp"
android:textColor="#000000"
/>
<TextView
android:id="#+id/SUM_TRIPS"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:textColor="#000000"
android:textAlignment="center"
android:textSize="25sp" />
</RadioGroup>
I believe my problem is with the Adapter class.
I have created it like the followings:
public class TRIPS_LISTVIEW_ADAPTER extends ArrayAdapter<TRIPS_LISTVIEW> {
private Context mContext;
private ArrayList<TRIPS_LISTVIEW> mData;
private MyFunctionsClass myFunctionsClass = new MyFunctionsClass();
public TRIPS_LISTVIEW_ADAPTER (Context mContext, ArrayList<TRIPS_LISTVIEW> mData) {
super(mContext, R.layout.summary_shape_layout,mData);
this.mContext = mContext;
this.mData = mData;
}
public int getCount() {
return mData.size();
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent)
{
if (convertView == null)
{
LayoutInflater mInflater = (LayoutInflater)
mContext.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.summary_shape_layout, null);
}
RadioGroup RG = (RadioGroup) convertView.findViewById(R.id.RG_Adapter);
TextView TRIP_NAME = (TextView) convertView.findViewById(R.id.TRIP_NAME);
TRIP_NAME.setTypeface(myFunctionsClass.FONT( TRIP_NAME.getContext().getAssets(),1));
TRIP_NAME.setText(myFunctionsClass.get_The_trip(mData.get(position).getTRIP_TITLE()));
TextView SUM_TRIPS = (TextView) convertView.findViewById(R.id.SUM_TRIPS);
SUM_TRIPS.setTypeface(myFunctionsClass.FONT( SUM_TRIPS.getContext().getAssets(),1));
SUM_TRIPS.setText(mData.get(position).getTRIP_COUNT());
return convertView;
}
}
The Data in my MainActivity Class are retrieved correctly. But as I mentioned I have multiple mode selection.

Try the following:
1) Demo2.class:-------------
public class Demo2 extends AppCompatActivity {
private ListView lv;
private CheckBox cb;
private Adapter adapter;
private List<Boolean> checkBoxState;
private List<String> checkBoxText;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.demo2);
checkBoxState = new ArrayList<>();
checkBoxText = new ArrayList<>();
for(int i = 0 ; i<10 ; i++){
if(i == 0) {
checkBoxState.add(i, true);
}else{
checkBoxState.add(i , false);
}
checkBoxText.add( i , "C" + (i+1));
}
lv = (ListView) findViewById(R.id.lv);
adapter = new Adapter(getApplicationContext() , checkBoxState , checkBoxText);
lv.setAdapter(adapter);
}
}
2) Adapter.class:------
public class Adapter extends BaseAdapter {
private Context context;
private LayoutInflater layoutInflater;
private List<Boolean> checkBoxState;
private List<String> checkBoxText;
public Adapter(Context context, List<Boolean> checkBoxState , List<String> checkBoxText) {
this.context = context;
layoutInflater = LayoutInflater.from(context);
this.checkBoxState = checkBoxState;
this.checkBoxText = checkBoxText;
}
public int getCount() {
return checkBoxState.size();
}
public Object getItem(int position) {
return checkBoxState.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
final CheckBox cb_list_item;
if (convertView == null) {
if (layoutInflater != null) {
view = layoutInflater.inflate(R.layout.list_item, null);
}
}
cb_list_item = (CheckBox) view.findViewById(R.id.cb_list_item);
cb_list_item.setText(checkBoxText.get(position));
cb_list_item.setOnCheckedChangeListener(null); // mask onCheckedChangeListener()
cb_list_item.setChecked(checkBoxState.get(position));
cb_list_item.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (!b) { // already selected
compoundButton.setChecked(true);
} else { // is selected now
checkSelected(position);
}
}
});
return view;
}
private void checkSelected(int position){
try {
for (int i = 0; i < checkBoxState.size(); i++) {
checkBoxState.set(i, false);
}
checkBoxState.set(position, true);
this.notifyDataSetChanged();
}catch (Exception e){
e.printStackTrace();
}
}
}
3) demo2.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:weightSum="100"
android:orientation="vertical">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/lv"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp">
</ListView>
</LinearLayout>
4) list_item.xml:----------
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<CheckBox
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="C"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:id="#+id/cb_list_item"/>
</android.support.constraint.ConstraintLayout>
5) Output:--------

I'm new to Asynctask and JSon.
May i know how to start to retrieve the currency rates from this site?
http://api.fixer.io/latest?base=SGD
I did look at this post but i'm not too sure how to start..
AsyncTask Android example
From the rates retrieved, i'd like to add the values into this ListView, by using a custom ListView adapter class.
Codes for xml file
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0.0dp"
android:orientation="horizontal"
android:layout_weight="0.4"
android:weightSum="1" >
<LinearLayout
android:layout_width="0.0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="0.8" >
<TextView
android:id="#+id/convertedAmtTV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="0.00"
android:textSize="70dp"
android:gravity="right" />
<EditText
android:id="#+id/inputAmtET"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="0"
android:textAlignment="textEnd" />
</LinearLayout>
<LinearLayout
android:layout_width="0.0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="0.2">
<TextView
android:id="#+id/convertedCurrTV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="SGD"
android:textSize="28dp"
android:paddingLeft="2dp"
android:paddingTop="29dp"
android:paddingBottom="19dp"
android:gravity="center_horizontal" />
<TextView
android:id="#+id/inputCurrTV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="AUD"
android:textSize="28dp"
android:paddingLeft="2dp"
android:layout_marginTop="3dp"
android:gravity="center_horizontal" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_weight="0.6"
android:layout_width="match_parent"
android:layout_height="0.0dp">
<TextView
android:text="From"
android:textSize="21dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<ListView
android:id="#+id/currencyLV"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Codes for MainActivity.class
public class MainActivity extends AppCompatActivity {
CurrencyRatesDetails crd = new CurrencyRatesDetails();
CurrencyRates cr = new CurrencyRates();
TextView inputCurrTV, convertedAmtTV;
ListView currencyLV;
EditText inputAmtET;
ArrayAdapter<String> adapter;
String[] currNameArr = crd.getNames();
String[] currCodeArr = crd.getCodes();
String[] currRateArr = crd.getRates();
String[] dbName;
String[] dbCode;
String[] dbRate;
Context context;
int index = 0;
//String[] rateCurrArr = {"AUD", "BGN", "BRL", "CAD", "CHF", "CNY"};
//double[] rateArr = {0.944, 1.2824, 2.2842, 0.96158, 0.70946, 4.8624}
Menu myMenu = null;
double amtInput, finalConversion;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = this;
//context.deleteDatabase("currency.db");
inputAmtET = (EditText) findViewById(R.id.inputAmtET);
convertedAmtTV = (TextView) findViewById(R.id.convertedAmtTV);
inputCurrTV = (TextView) findViewById(R.id.inputCurrTV);
currencyLV = (ListView) findViewById(R.id.currencyLV);
/*for (int i = 0; i < currNameArr.length; i++) {
cr.addToDataBase(currNameArr[i], currCodeArr[i], currRateArr[i], getApplicationContext());
}*/
//cr.addToDataBase(currNameArr, getApplicationContext());
//Resources myRes = this.getResources();
//currArr = myRes.getStringArray(R.array.currencyList);
//adapter = ArrayAdapter.createFromResource(this, R.array.currencyList, android.R.layout.simple_selectable_list_item);
//adapter = new ArrayAdapter<String>(this, android.R.layout.simple_selectable_list_item, currNameArr);
//currencyLV.setAdapter(adapter);
dbName = cr.retrieveAllName(getApplicationContext());
dbCode = cr.retrieveAllCode(getApplicationContext());
dbRate = cr.retrieveAllRate(getApplicationContext());
currencyLV.setAdapter(new CustomAdapter(this, dbName, dbCode, dbRate));
currencyLV.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
inputCurrTV.setText(dbCode[i]);
index = i;
//Getting rate based on selected currency code
//rate = rateArr[i];
}
});
}
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
this.myMenu = menu;
addMenuItems(menu);
getMenuInflater().inflate(R.menu.mainmenu, menu);
return true;
}
private void addMenuItems(Menu menu) {
int index = 200;
menu.add(index, index, index, "Settings");
menu.add(index, index + 1, index + 1, "Add Custom Rate");
menu.add(index, index + 2, index + 2, "Load Default Rates");
}
public boolean onOptionsItemSelected(MenuItem item) {
//getOrder() to get Menu Item at this specific orderId
if (item.getItemId() == R.id.menu_convert) {
amtInput = Double.parseDouble(inputAmtET.getText().toString());
//finalConversion = amtInput / rate;
finalConversion = crd.conversion(amtInput, index);
//Formatting converted value to 2d.p
String finalValue = String.format("%.2f", finalConversion);
convertedAmtTV.setText(finalValue);
} else if (item.getItemId() == 201) {
Intent myIntent = new Intent(MainActivity.this, CustomXchangeRate.class);
startActivity(myIntent);
}
return true;
}
}
Custom ListView Adapter Class
public class CustomAdapter extends BaseAdapter{
String[] resultNames;
String[] resultCodes;
String[] resultRates;
Context context;
private static LayoutInflater inflater = null;
public CustomAdapter(CustomXchangeRate customXchangeRate, String[] names, String[] codes, String[] rates) {
resultNames = names;
resultCodes = codes;
resultRates = rates;
context = customXchangeRate;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public CustomAdapter(MainActivity mainActivity, String[] names, String[] codes, String[] rates) {
resultNames = names;
resultCodes = codes;
resultRates = rates;
context = mainActivity;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return resultNames.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
public class ViewHolder{
TextView tvName;
TextView tvCode;
TextView tvRate;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder vh = new ViewHolder();
View rowView;
rowView = inflater.inflate(R.layout.activity_custom_adapter, null);
vh.tvName = (TextView) rowView.findViewById(R.id.currencyNameTV);
vh.tvCode = (TextView) rowView.findViewById(R.id.currencyCodeTV);
vh.tvRate = (TextView) rowView.findViewById(R.id.currencyRateTV);
vh.tvName.setText(resultNames[position]);
vh.tvCode.setText(resultCodes[position]);
vh.tvRate.setText(resultRates[position]);
return rowView;
}
}
Would appreciate any help...

The best way to get this JSON inside ur app will be to use Volley :
https://developer.android.com/training/volley/simple.html
Check this link you will find what ur asking for.
Cheers

Am trying to make a ui with flipview as in this tutorial. IThe tutorial deals with activities, but i want it in fragments case. That ie, the flip effect as well as its parent is a fragment. When i use activity it works, but on using fragment,only the empty textview shows up. Can anyone help me with this?
This is some part of the code
page.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff3333" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="300dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/banner"
android:id="#+id/head"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="20dp"
android:id="#+id/header"
android:gravity="center"/>
</RelativeLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/des"
android:textSize="30dp"
android:gravity="center"/>
</FrameLayout>
fragment_news_feed :
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:flipview="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<se.emilsjolander.flipview.FlipView
android:id="#+id/flip_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
flipview:orientation="vertical"
tools:context="com.excel.excelapp.fragment.NewsFeedFragment" >
</se.emilsjolander.flipview.FlipView>
<TextView
android:id="#+id/empty_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Empty!"
android:textSize="32sp"
android:visibility="gone" />
</merge>
NewsFeedFragment.java
public class NewsFeedFragment extends Fragment implements NewsFlipAdapter.Callback, FlipView.OnFlipListener, FlipView.OnOverFlipListener{
private FlipView mFlipView;
private NewsFlipAdapter mAdapter;
int i=0,no_of_items=7;
public NewsFeedFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
LinearLayout wrapper = new LinearLayout(getActivity());
View view = inflater.inflate(R.layout.fragment_news_feed, wrapper, true);
setUpView(view);
return wrapper;
}
private void setUpView(View view) {
mFlipView = (FlipView) view.findViewById(R.id.flip_view);
mAdapter = new NewsFlipAdapter(getActivity());
mAdapter.setCallback(this);
mFlipView.setAdapter(mAdapter);
mFlipView.setOnFlipListener(this);
mFlipView.peakNext(false);
mFlipView.setOverFlipMode(OverFlipMode.RUBBER_BAND);
mFlipView.setEmptyView(view.findViewById(R.id.empty_view));
mFlipView.setOnOverFlipListener(this);
}
#Override
public void onPageRequested(int page) {
mFlipView.smoothFlipTo(page);
}
#Override
public void onFlippedToPage(FlipView v, int position, long id) {
Log.i("pageflip", "Page: " + position);
if(position > mFlipView.getPageCount()-3 && mFlipView.getPageCount()<30){
mAdapter.addItems(5);
}
}
#Override
public void onOverFlip(FlipView v, OverFlipMode mode,
boolean overFlippingPrevious, float overFlipDistance,
float flipDistancePerPage) {
Log.i("overflip", "overFlipDistance = "+overFlipDistance);
}
NewsFlipAdapter.java
public class NewsFlipAdapter extends BaseAdapter {
public interface Callback {
public void onPageRequested(int page);
}
static class Item {
static long id = 0;
long mId;
public Item() {
mId = id++;
}
long getId() {
return mId;
}
}
private LayoutInflater inflater;
private Callback callback;
private List<Item> items = new ArrayList<Item>();
public NewsFlipAdapter(Context context) {
inflater = LayoutInflater.from(context);
}
public void setCallback(Callback callback) {
this.callback = callback;
}
#Override
public int getCount() {
return items.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return items.get(position).getId();
}
#Override
public boolean hasStableIds() {
return true;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.page, parent, false);
holder.heading = (TextView) convertView.findViewById(R.id.header);
holder.description = (TextView) convertView.findViewById(R.id.des);
holder.header = (ImageView) convertView.findViewById(R.id.head);
// holder.firstPage = (Button) convertView.findViewById(R.id.first_page);
// holder.lastPage = (Button) convertView.findViewById(R.id.last_page);
// holder.firstPage.setOnClickListener(this);
// holder.lastPage.setOnClickListener(this);
// convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
return convertView;
}
static class ViewHolder {
TextView heading;
ImageView header;
TextView description;
}
/* #Override
public void onClick(View v) {
switch(v.getId()){
case R.id.first_page:
if(callback != null){
callback.onPageRequested(0);
}
break;
case R.id.last_page:
if(callback != null){
callback.onPageRequested(getCount()-1);
}
break;
}
}*/
public void addItems(int amount) {
TextView text;
for (int i = 0; i < amount; i++) {
items.add(new Item());
}
notifyDataSetChanged();
}
public void addItemsBefore(int amount) {
for (int i = 0; i < amount; i++) {
items.add(0, new Item());
}
notifyDataSetChanged();
}

I am not a 100 % sure about the following explanation, so please correct me if I am wrong.
The <merge> tag merges the inflated layout with it's parent view.
It generally doesn't seem to sit well with fragments as explained in more detail here.
So try to replace merge with LinearLayout in your fragment_newsfeed_layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:flipview="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<se.emilsjolander.flipview.FlipView
android:id="#+id/flip_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
flipview:orientation="vertical"
tools:context="com.excel.excelapp.fragment.NewsFeedFragment" >
</se.emilsjolander.flipview.FlipView>
<TextView
android:id="#+id/empty_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Empty!"
android:textSize="32sp"
android:visibility="gone" />
</LinearLayout>

I am using a list view and an adapter for loading a list,each list item has a TextView,EditText and Image..I set the visibility of the arrow and the Edit text according to the position of the list row,everything works fine when I load the list for the first time...
But when I scroll through the list,visibility of the items keep changing...Kindly help me in this issue...The relevant codes has been attached...
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:orientation="horizontal" android:background="#FFFFFF">
<TextView android:layout_height="wrap_content" android:layout_width="0dip"
android:textSize="20dip" android:layout_weight="1"
android:id="#+id/textview_add_lot_list" android:textColor="#android:color/black"
android:paddingTop="10dip" android:paddingBottom="10dip"
android:paddingLeft="10dip"/>
<EditText android:layout_height="fill_parent" android:layout_width="0dip"
android:layout_weight="1" android:id="#+id/et_add_lot_list"
android:layout_gravity="center_vertical"/>
<ImageView android:layout_height="wrap_content" android:layout_width="wrap_content"
android:id="#+id/imageview_arrow_add_lot_list" android:layout_gravity="center_vertical"
android:visibility="invisible" android:src="#drawable/more_reviews_arrow"
android:paddingRight="10dip"/>
</LinearLayout>
Java code activity...
final ArrayList<String> listItems = new ArrayList<String>();
listItems.add("Parking name");
listItems.add("Address");
listItems.add("City");
listItems.add("State");
listItems.add("Zip");
listItems.add("Phone");
listItems.add("Web Address");
listItems.add(" ");
listItems.add("Parking Image");
listItems.add(" ");
listItems.add("Open Hours");
listItems.add(" ");
listItems.add("Web Reviews");
final AddParkingLotAdapter adapter = new AddParkingLotAdapter(mAppContext,0,listItems);
lv.setAdapter(adapter);
Java code...adapter
public class AddParkingLotAdapter extends ArrayAdapter<String> {
private ArrayList<String> mStrings;
private LayoutInflater mInflater;
private AppContext mContext;
private static int NON_EMPTY_ROW = 1;
private static int EMPTY_ROW = 0;
public AddParkingLotAdapter(Context context, int resId, List<String> strings) {
super(context, resId,strings);
mStrings = (ArrayList<String>) strings;
mContext = (AppContext) context;
mInflater = LayoutInflater.from(context);
}
#Override
public int getViewTypeCount() {
return 2;
}
#Override
public int getCount() {
return mStrings.size();
}
#Override
public String getItem(int position) {
return mStrings.get(position);
}
#Override
public int getItemViewType(int position) {
if(position==7||position==9||position==11){
return EMPTY_ROW;
}else{
return NON_EMPTY_ROW;
}
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView itemTextView = null;
//different inflations for different type rows..
if(getItemViewType(position) == EMPTY_ROW){
if (convertView == null) {
convertView = mInflater.inflate(R.layout.review_empty_row, null);
}
}else if(getItemViewType(position) == NON_EMPTY_ROW){
if (convertView == null) {
convertView = mInflater.inflate(R.layout.add_parkinglist_item, null);
}
itemTextView = (TextView) convertView.findViewById(R.id.textview_add_lot_list);
itemTextView.setText(mStrings.get(position));
if (position==3||position==8||position==10||position==12){
ImageView itemImageView = (ImageView)convertView.findViewById(R.id.imageview_arrow_add_lot_list);
itemImageView.setVisibility(View.VISIBLE);
EditText editText = (EditText)convertView.findViewById(R.id.et_add_lot_list);
editText.setVisibility(View.INVISIBLE);
}
}
return convertView;
}
}

In this code:
if (position==3||position==8||position==10||position==12){
ImageView itemImageView = (ImageView)convertView.findViewById(R.id.imageview_arrow_add_lot_list);
itemImageView.setVisibility(View.VISIBLE);
EditText editText = (EditText)convertView.findViewById(R.id.et_add_lot_list);
editText.setVisibility(View.INVISIBLE);
}
you've got no else clause. That means that if position is 0,1,2,4,5 or 6 you don't explicitly set the visibility of the views and so the visibility will be whatever it was set to when the views were recycled. If convertView is non-null, you always need to reset the visibility of any items whose visibility may be been modified earlier.

Hi this is the code I'm looking at:
https://github.com/findup/Android_Sample_TodoApp/blob/master/src/jp/co/example/testapp/MainActivity.java
Around line 127, it chooses to use a database connection to fetch content from the database.
Instead of fetching data from the database, I'd like to use an ArrayList to hold the data. Could anyone help me figure out what I need to do? Thanks!

Not a one-for-one example based on your code, but this is will populate a list from a database table without a simple cursor:
public class MyListAdapter extends ListActivity {
List<ContactGroup> groups = new ArrayList<ContactGroup>();
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.groups = getGrpList();
ContactGroupAdapter cAdapter = new ContactGroupAdapter(this);
setListAdapter(cAdapter);
}
private List<ContactGroup> getGrpList(){
List<ContactGroup> grps = new ArrayList<ContactGroup>();
ContentResolver cr = getContentResolver();
Cursor groupCur = cr.query(Groups.CONTENT_URI, new String [] {Groups._ID, Groups.NAME}, null, null, Groups.NAME + " ASC");
if (groupCur.getCount() > 0) {
while (groupCur.moveToNext()) {
ContactGroup newGroup = new ContactGroup();
newGroup.Name = groupCur.getString(groupCur.getColumnIndex(Groups.NAME));
newGroup.Id = groupCur.getString(groupCur.getColumnIndex(Groups._ID));
grps.add(newGroup);
}
}
return grps;
}
public class ContactGroupAdapter extends BaseAdapter{
public ContactGroupAdapter(Context c) {
mContext = c;
}
public int getCount() {
return groups.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView == null){
LayoutInflater vi = LayoutInflater.from(this.mContext);
convertView = vi.inflate(R.layout.two_line_list_item, null);
holder = new ViewHolder();
convertView.setTag(holder);
}
else {
//Get view holder back
holder = (ViewHolder) convertView.getTag();
}
ContactGroup cg = groups.get(position);
if (cg != null) {
//Name
holder.toptext = (TextView) convertView.findViewById(R.id.text1);
holder.toptext.setText(cg.Name);
//ID
holder.bottomtext = (TextView) convertView.findViewById(R.id.text2);
holder.bottomtext.setText(cg.Id);
}
return convertView;
}
private Context mContext;
}
public static class ViewHolder {
TextView toptext;
TextView bottomtext;
}
public class ContactGroup{
public String Id;
public String Name;
}
}
Then there are XML files ...
two_line_list_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<TextView android:id="#+id/text1" android:textStyle="bold"
android:layout_width="fill_parent" android:layout_height="wrap_content" />
<TextView android:id="#+id/text2" android:textStyle="bold"
android:layout_width="fill_parent" android:layout_height="wrap_content" />
</LinearLayout>
and main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="#+id/android:list" android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<TextView android:id="#id/android:empty" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:text="No Groups" />
</LinearLayout>