I wrote code:
List<String> Names = new ArrayList<String>();
List<Double> Prices = new ArrayList<Double>();
List<String> Dates = new ArrayList<String>();
List<String> Hours = new ArrayList<String>();
List<String> iDs = new ArrayList<String>();
SimpleAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView resultsListView = (ListView) findViewById(R.id.listMyReceipts);
SearchView m = (SearchView) findViewById(R.id.action_search);
HashMap<String, String> NamePrice = new HashMap<>();
TextView test = (TextView) findViewById(R.id.test);
Names.add("Starbucks"); Prices.add(11.99); Dates.add("01/01/2017"); Hours.add("9:33");
Names.add("Apple Store"); Prices.add(500.00); Dates.add("01/01/2017"); Hours.add("9:30");
Names.add("Esselunga"); Prices.add(135.67); Dates.add("01/01/2017"); Hours.add("11:51");
Names.add("Mediaworld"); Prices.add(19.98); Dates.add("01/01/2017"); Hours.add("12:03");
Names.add("Starbucks"); Prices.add(11.99); Dates.add("01/01/2017"); Hours.add("12:47");
for (int i = 0; i < Names.size(); i++) {
iDs.add(";+#:" + i + ":#+;");
NamePrice.put(iDs.get(i) + Names.get(i), " " + Prices.get(i).toString() + "€" + " - " + Dates.get(i) + " " + Hours.get(i));
}
List<HashMap<String, String>> listItems = new ArrayList<>();
adapter = new SimpleAdapter(this, listItems, R.layout.list_item,
new String[] {"First", "Second"},
new int[] {R.id.listitemTitle, R.id.listitemSubItem});
//Integer x = 0;
//int x = -1;
Iterator it = NamePrice.entrySet().iterator();
for (int i = 0; i < iDs.size(); i++) {
HashMap<String, String> resultMap = new HashMap<>();
Map.Entry pair = (Map.Entry) it.next();
resultMap.put("First", pair.getKey().toString().replace(iDs.get(i), ""));
resultMap.put("Second", pair.getValue().toString());
listItems.add(resultMap);
}
//test.setText(IDs.get(x - 1));
resultsListView.setAdapter(adapter);
}
This should replace all the IDs into "". It doesn't. So the output could be: ;+#:0:#+;NAME1 12.99 ;+#:1:#+;NAME2 0.99
But in the second loop, if I say
resultMap.put("First", pair.getKey().toString().replace(IDs.get(0), ""));
it replaces correctly the element 0.
The output would be: NAME1 12.99 ;+#:1:#+;NAME2 0.99
You are not getting the entries of NamePrice in the order you expect. I inserted a System.out.println() in your second for loop and got the output in this order:
;+#:3:#+;Mediaworld
;+#:0:#+;Starbucks
;+#:4:#+;Starbucks
;+#:1:#+;Apple Store
;+#:2:#+;Esselunga
So you are trying to replace ;+#:0:#+; in ;+#:3:#+;Mediaworld and so forth. That doesn’t replace anything. The reason is that NamePrice is a HashMap. A HashMap’s iterator does not return the entries in any specific order, particularly not in the order they were inserted.
You may use a LinkedHashMap instead:
LinkedHashMap<String, String> NamePrice = new LinkedHashMap<>();
Its iterator returns the entries in the order they were created. So now the replacements work.
Related
I currently have a problem with my two-line ListView. The two-line ListView shows the list separator, however, there is no data or text inside it. Where could I possibly have done wrong?
For additional information, the results.get(i) will show Tungro,18.92%, for example.
ArrayList<HashMap<String, String>> listItems = new ArrayList<>();
HashMap<String, String> listItemData;
for (int i=0; i<results.size(); i++) {
if (results.size() != 0) {
listItemData = new HashMap<String, String>();
String resultStr = results.get(i).toString();
String[] resultStrVar = resultStr.split(",");
listItemData.put(resultStrVar[0], resultStrVar[1]);
listItems.add(listItemData);
} else {
listItemData = new HashMap<String, String>();
listItemData.put("No predictions found", "Kindly shot again");
listItems.add(listItemData);
}
}
SimpleAdapter adapter = new SimpleAdapter(Results.this, listItems,
android.R.layout.simple_list_item_2,
new String[] {"First Line", "Second Line"},
new int[] {android.R.id.text1, android.R.id.text2 });
listView.setAdapter(adapter);
Below is the screenshot of the ListView, where you could see the list separator but without text or data:
Is there something wrong with how I tokenize the string or with the adapter? Thanks a lot.
Thanks Mike M! I have changed my code to the following:
ArrayList<HashMap<String, String>> listItems = new ArrayList<>();
HashMap<String, String> listItemData;
for (int i=0; i<results.size(); i++) {
if (results.size() != 0) {
listItemData = new HashMap<String, String>();
String resultStr = results.get(i).toString();
String[] resultStrVar = resultStr.split(",");
listItemData.put("disease_name", resultStrVar[0]);
listItemData.put("confidence", resultStrVar[1]);
listItems.add(listItemData);
} else {
listItemData = new HashMap<String, String>();
listItemData.put("disease_name", "No predictions found");
listItemData.put("confidence", "Kindly shot again");
listItems.add(listItemData);
}
}
SimpleAdapter adapter = new SimpleAdapter(Results.this, listItems,
android.R.layout.simple_list_item_2,
new String[] {"disease_name", "confidence"},
new int[] {android.R.id.text1, android.R.id.text2 });
listView.setAdapter(adapter);
I have a ArrayList<HashMap<String,String>> that I am using the toString() method on to store in a database.
Here is the code that I use to store it the toString() to a database (it works):
HashMap<String, String> commentsHash = null;
ArrayList<HashMap<String, String>> test2 = new ArrayList<HashMap<String, String>>();
for (int i=0; i < test.size(); i++)
{
String timestamp = test.get(i).get("timestamp");
String last_name = test.get(i).get("last_name");
String first_name = test.get(i).get("first_name");
String comment = test.get(i).get("comment");
commentsHash = new HashMap<String, String>();
commentsHash.put("creation_timestamp", timestamp);
commentsHash.put("first_name", first_name);
commentsHash.put("last_name", last_name);
commentsHash.put("comment", comment);
test2.add(commentsHash);
}
dbHelper.addCommentsToMyLiPost(Integer.parseInt(sqlId), test2.toString());
Here is the method I want to use to convert a string to a HashMap<String, String>:
protected HashMap<String,String> convertToStringToHashMap(String text){
HashMap<String,String> data = new HashMap<String,String>();
Pattern p = Pattern.compile("[\\{\\}\\=\\, ]++");
String[] split = p.split(text);
for ( int i=1; i+2 <= split.length; i+=2 ){
data.put( split[i], split[i+1] );
}
return data;
}
I have tried using .split(",") on the string to split the string into 2 parts, but instead of returning two, it returns 8.
Here is what the toString() method prints. It is an ArrayList of HashMaps, and I am trying to grab the two HashMaps that are inside of the ArrayList.
[{comment=hello, last_name=u1, first_name=u1, creation_timestamp=1404938643772}, {comment=hello2, last_name=u2, first_name=u2, creation_timestamp=1404963221598}]
In convertToStringToHashMap, when you put your data into HashMap, the old value will be replaced since they have same key for each records, such as comment, last_name, etc.
public static Map<String, Map<String, String>> convertToStringToHashMap(String text)
{
Map<String, Map<String, String>> map = new HashMap<String, Map<String, String>>();
Pattern p = Pattern.compile("[\\{\\}\\=\\, ]++");
String[] split = p.split(text);
Map<String, String> data = new HashMap<String, String>();
int gap = 8;
int key = 1;
for (int i = 1; i + 2 <= split.length; i += 2)
{
data.put(split[i], split[i+1]);
if((i + 1) % gap == 0)
{
map.put(String.valueOf(key++), data);
data = new HashMap<String, String>();
data.clear();
}
}
return map;
}
This will return a Map:
2={first_name=u2, last_name=u2, comment=hello2, creation_timestamp=1404963221598}
1={first_name=u1, last_name=u1, comment=hello, creation_timestamp=1404938643772}
This program will recreate the whole list from the database entry
Pattern firstPat = Pattern.compile("\\{.*?\\}");
Matcher firstMat = firstPat.matcher(text);
ArrayList<HashMap<String, String>> list = new ArrayList<>();
while(firstMat.find()){
HashMap<String, String> map = new HashMap<>();
String assignStrings = firstMat.group();
String [] assignGroups = assignStrings.substring(1,assignStrings.length()-1).split("\\s*\\,\\s*");
for(String assign:assignGroups){
String [] parts = assign.split("\\=");
map.put(parts[0], parts[1]);
}
list.add(map);
}
return list
I have ArrayAdapter for spinnner and i want to add item to this spinner. My code like below
public void parser()
{
final ArrayList<HashMap<String, String>> valuesList = new ArrayList<HashMap<String,String>>();
for(int i = 0;i<response.getPropertyCount();i++){
SoapObject dersListesi = (SoapObject)response.getProperty(i);
for (int j = 0; j < dersListesi.getPropertyCount(); j++) {
Object objectNames = dersListesi.getProperty(j);
SoapObject ders_kodu = (SoapObject)objectNames;
SoapObject ders_adi = (SoapObject)objectNames;
HashMap<String, String> map = new HashMap<String, String>();
String dersKodu = ders_kodu.getProperty("dersKodu").toString();
String dersAdi = ders_adi.getProperty("dersAdi").toString();
map.put( dersKodu,dersAdi);
valuesList.add(map);
System.out.println( "map"+map);
System.out.println(dersAdi);
}
ArrayAdapter<HashMap<String, String>> ad =
new ArrayAdapter<HashMap<String,String>>(this,
android.R.layout.simple_list_item_1,valuesList);
ad.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerDersKodu = (Spinner)findViewById(R.id.derscombo);
spinnerDersKodu.setAdapter(ad);
}
}
This code work correctly but my spinner's output like this:
{BIM101=Computer Programming}
How I can remove these curly braces and = ?
Thanks for help.
Change the your ArrayAdapter to hold string instance. You do not need an ArrayList of HashMap, if the purpose it's just printing the key and the value of the HashMap
final ArrayList<String> valuesList = new ArrayList<String>();
for(int i = 0;i<response.getPropertyCount();i++){
SoapObject dersListesi = (SoapObject)response.getProperty(i);
for (int j = 0; j < dersListesi.getPropertyCount(); j++) {
Object objectNames = dersListesi.getProperty(j);
SoapObject ders_kodu = (SoapObject)objectNames;
SoapObject ders_adi = (SoapObject)objectNames;
String dersKodu = ders_kodu.getProperty("dersKodu").toString();
String dersAdi = ders_adi.getProperty("dersAdi").toString();
valuesList.add(dersKodu+ " " + dersAdi);
}
ArrayAdapter<String> ad =
new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,valuesList);
i have data fetched from my webservice in
ArrayList<HashMap<String,String>>
Now i want to convert each object of the above to
String[]
how do i do this?
any help would be much appreciated!
try
ArrayList<HashMap<String, String>> test = new ArrayList<HashMap<String, String>>();
HashMap<String, String> n = new HashMap<String, String>();
n.put("a", "a");
n.put("b", "b");
test.add(n);
HashMap<String, String> m = test.get(0);//it will get the first HashMap Stored in array list
String strArr[] = new String[m.size()];
int i = 0;
for (HashMap<String, String> hash : test) {
for (String current : hash.values()) {
strArr[i] = current;
i++;
}
}
The uses for an Hashmap should be an Index of HashValues for finding the values much faster. I don't know why you have Key and Values as Strings but if you only need the values you can do it like that:
ArrayList<HashMap<String, String>> test = new ArrayList<>();
String sum = "";
for (HashMap<String, String> hash : test) {
for (String current : hash.values()) {
sum = sum + current + "<#>";
}
}
String[] arr = sum.split("<#>");
It's not a nice way but the request isn't it too ;)
ArrayList<HashMap<String, String>> meterList = controller.getMeter();
HashMap<String, String> mtiti = meterList.get(0);//it will get the first HashMap Stored in array list
String[] strMeter = new String[mtiti.size()];
String meter = "";
for (HashMap<String, String> hash : meterList) {
for (String current : hash.values()) {
meter = meter + current + "<#>";
}
}
String[] arr = meter.split("<#>");
I am using the following code to save hashmap content into arraylist.
HashMap jediSaber = new HashMap();
ArrayList<HashMap> valuesList = new ArrayList();
for(int i = 0; i< 4;i++) {
jediSaber.put("white","white_name"+i);
jediSaber.put("blue","blue_name"+i);
valuesList.add(i, jediSaber);
System.out.println("list ontent:"+i+":"+valuesList.get(i).values());
}
`
output is as follows:
list content:0:[blue_name0, white_name0]
list content:1:[blue_name1, white_name1]
list content:2:[blue_name2, white_name2]
list content:3:[blue_name3, white_name3]
When i try to display the content of arraylist in outside with the following code,
System.out.println("list content:");
for(int i = 0;i<valuesList.size();i++){
System.out.println("list:"+i+":"+valuesList.get(i).values());
}
It is showing the following output,
list content:0:[blue_name3, white_name3]
list content:1:[blue_name3, white_name3]
list content:2:[blue_name3, white_name3]
list content:3:[blue_name3, white_name3]
My problem is i need to display the content of arraylist of hashmap.
I think something i missed in second part. Can anybody help me to solve this minor issue?
Thanks in advance!!..
This is adding the same HashMap each time to the ArrayList:
valuesList.add(i, jediSaber);
Create a new HashMap each time within the for and add it:
List<HashMap<String, String>> valuesList =
new ArrayList<HashMap<String, String>>();
for (int i = 0; i < 4; i++)
{
HashMap<String, String> m = new HashMap<String, String>();
m.put("white", "white_name" + i);
m.put("blue", "blue_name" + i);
valuesList.add(m);
}
System.out.println(valuesList.toString());
List<Map> valuesList = new ArrayList();
for (int i = 0; i < 4; i++) {
Map<Object, Object> jediSaber = new HashMap<>();
jediSaber.put("white", "white_name" + i);
jediSaber.put("blue", "blue_name" + i);
valuesList.add(jediSaber);
Set<Entry<Object, Object>> entrySet = jediSaber.entrySet();
for (Entry<Object, Object> entry : entrySet) {
System.out.println(entry.getKey() + "-" + entry.getValue());
}
}
Try pulling jediSaber inside your for loop, like so:
for(int i = 0; i < 4; i++) {
Map<String, String> jediSaber = new HashMap<String, String>();
You should also parameterize valuesList too:
List<Map<String, String>> valuesList = new ArrayList<Map<String, String>>();
P.S. There's no need to call add(i, jediSaber) with the index argument: valuesList.add(jediSaber) will have the same effect.