Develop Reference

Linearlayout weights not giving what I write

So I want to have a headline that is ALWAYS a third of the screen and then the rest of the 2 thirds of the screen with names. Seems easy but the result is that the headline becomes less than a third if there is many names. It is only 2 lines that does this I wrtite //1 //2 to easily find them but give the whole code since it may affect the result.
Here is a photo.
The top text does not show the whole message and Is not 1 third of the screen as intended
Thanks in advance!
private void showScores() {
float baseTextSize = 100/playerNum;
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT,
10000.0f //1
);
TextView t = new TextView(this);
String result_msg = getString(R.string.result_msg);
t.setLayoutParams(param);
t.setText(result_msg + "\n");
t.setTextColor(getColor(R.color.white));
if (playerNum>3) {
t.setTextSize(30f);
} else {
t.setTextSize(40f);
}
scoreShower.addView(t);
param.weight = 20000.0f/playerNum; //2
for (int i=0;i<playerNum;i++) {
TextView txt = new TextView(this);
txt.setLayoutParams(param);
if (i == 0) {
txt.setTextSize(baseTextSize + 8f);
txt.setTextColor(getColor(R.color.gold));
} else {
txt.setTextSize(baseTextSize);
txt.setTextColor(getColor(R.color.white));
}
String txtString = (i+1) + ". " + arrayList.get(i).getKey() + " : " + arrayList.get(i).getValue();
txt.setText(txtString);
if (playerNum>6) {
txt.setTextSize(10f);
}
scoreShower.addView(txt);
}

Try using weighted LinearLayout
<LinearLayout
....
...weightSum="3"
...orientation="vertical">
Set the weight of the top view to 2 using
<...
...layout_weight="1">
And the one below set the weight to 2

Removing Single View from a layout programmatically

I'm trying to remove a single view from layout but it is not being removed.
But, when i call removeAll, it does remove them all.
Here is the code:
for (int subspe = 0; subspe < totalSubSpe; subspe++) {
View childSubSpe =
BasicInfoUpdateDocProfile.ll_custom_for_supspecialist.getChildAt(subspe);
TextView subSpecialityId = (TextView) childSubSpe.findViewById(R.id.tv_speciality_id);
TextView specialistId = (TextView) child.findViewById(R.id.tv_id);
String speID = specialistId.getText().toString();
String subSepId = subSpecialityId.getText().toString();
Log.e("TAG", "the the the the id is: speciality " + speID);
Log.e("TAG", "the the the the id is: sub speiciality " + subSepId);
if (speID.equals(subSepId)) {
//removing sub qualificaiton
Log.e("TAG", "It is Equal subspecialist ");
ViewGroup par = (ViewGroup) childSubSpe.getParent();
par.removeView(childSubSpe);
//BasicInfoUpdateDocProfile.ll_custom_for_supspecialist.removeView(childSubSpe);
BasicInfoUpdateDocProfile.ll_custom_for_supspecialist.
removeView((View)childSubSpe.getParent());
// BasicInfoUpdateDocProfile.ll_custom_for_supspecialist.removeAllViews();
}
}

I have 4 textviews which take their values from spinner. If TextView 3 and 4 are blank then I need to copy values from position 1 & 2

I have 4 textviews which take their values from dropdown list (spinner) selected at previous screen.
There can be either 2 or 4 numbers/letters as result of this selection.
The first position will always be a number and the second position will always be a letter. The third position can be a number or blank and the fourth position can be a letter or blank.
If position 3 and position 4 are blank then I need to make them equal to positions 1 & 2 respectively.
String myGrade = intent.getStringExtra("parameter_name_grade");
// above takes value of 'myGrade' from spinner selection at previous screen
String mDisplayGradeNumberEff = (" " + myGrade.charAt(0));
TextView displayGradeNumberEff = (TextView) findViewById(R.id.gradeNumberEffTV);
displayGradeNumberEff.setText(mDisplayGradeNumberEff);
String mDisplayGradeLetterEff = (" " + myGrade.charAt(1));
TextView displayGradeLetterEff = (TextView) findViewById(R.id.gradeLetterEffTV);
displayGradeLetterEff.setText(mDisplayGradeLetterEff);
// above works correctly
// from here down only works when a character is present in both positions
// if positions 3(2) and 4(3) are empty app stops running.
String mDisplayGradeNumberDia = (" " + myGrade.charAt(2));
if (mDisplayGradeNumberDia.isEmpty()) {
mDisplayGradeNumberDia = mDisplayGradeNumberEff;
}
TextView displayGradeNumberDia = (TextView) findViewById(R.id.gradeNumberDiaTV);
displayGradeNumberDia.setText(mDisplayGradeNumberDia);
String mDisplayGradeLetterDia = (" " + myGrade.charAt(3));
if (mDisplayGradeLetterDia.isEmpty()) {
mDisplayGradeLetterDia = mDisplayGradeLetterEff;
}
TextView displayGradeLetterDia = (TextView) findViewById(R.id.gradeLetterDiaTV);
displayGradeLetterDia.setText(mDisplayGradeLetterDia);
}

I Guess you have a array out of bounds exception, please provide Logcat....
Check if "myGrade" has 3/4 Characters, if it does not you can't read them with charAt(3)...
You can check the length of the String with "myGrade.length()"

When I asked this question I was fairly new to the site and didn't understand that I should post back the solution for future reference. Solution below worked so thanks to rocket for your help and sorry for the delay!
int myGradeLength = mGrade.length();
if (myGradeLength != 4) {
mDisplayGradeNumberEff = ("" + mGrade.charAt(0));
mDisplayGradeLetterEff = ("" + mGrade.charAt(1));
mDisplayGradeNumberDia = ("" + mGrade.charAt(0));
mDisplayGradeLetterDia = ("" + mGrade.charAt(1));
} else {
mDisplayGradeNumberEff = ("" + mGrade.charAt(0));
mDisplayGradeLetterEff = ("" + mGrade.charAt(1));
mDisplayGradeNumberDia = ("" + mGrade.charAt(2));
mDisplayGradeLetterDia = ("" + mGrade.charAt(3));
}

Show Multiple Item Details in TextView not only Sinlge

Getting value for only single Item in TextView from CartActivity, but want to fetch detail for all Item(s) placed in Cart
Like: I have 4 items in Cart, but once i am trying to show these item details in another activity, so here i am only getting single item detail (only for 4th Item, not for all fours) why?
CODE:
for (int i = 0; i < Session.sItem_Detail.size(); i++) {
String title=Constants.sItem_Detail.get(i).get(
ProductInformationActivity.KEY_TITLE);
String qty=Constants.sItem_Detail.get(i).get(
ProductInformationActivity.KEY_QTY);
String cost=Constants.sItem_Detail.get(i).get(
ProductInformationActivity.KEY_COST);
textDetails =(TextView)findViewById(R.id.txtDetails);
textDetails.setText("(Title:" +title + "(Qty:" + qty + ")" + "(Cost:" + "Rs." + cost + ")");
public class Session {
public static ArrayList<HashMap<String, String>> sItem_Detail = new ArrayList<HashMap<String, String>>();
}
So here is my question, how can i get item details for all items stored in Cart, not just for one..

Try this
use append(charctersequence) instead of setText(charctersequence)
textDetails.append("(Title:" +title + "(Qty:" + qty + ")" + "(Cost:" + "Rs." + cost + ")"+"\n");

Android: Add programmatically multiple views to linear layout

I'm not sure how to handle that. I need linear layout which needs to have 20+ TextView and EditText components. I can define ImageView and buttons on top but I don't know how to generate rest of the components below and then put a button at the end.
It will look something like this:
---Button-----Button-------
--------ImageView----------
TextView -------- EditText
Item1.............[-------]
Item2.............[-------]
Item3.............[-------]
Item4.............[-------]
.
.
.
------------Button------------
There will be really a lot of components so I would like to avoid defining all components by hand in XML. After clicking on button all components need to be saved in pairs "name":"value" ("Item1":"EditText value"). I have a list of item's names and user will write the values for those items and save them to JSON file.
Thank you in advance.

you have to implement a class like this.
public class DetailedTicketSystemView extends LinearLayout
{
static int inc = 100;
ArrayList<XmlScommessaInCorso> _viewData;
ArrayList<xmlSistemaMovimenti> _systems;
Context _context;
public DetailedTicketSystemView(Context context, int res, AttributeSet attrs, ArrayList<XmlScommessaInCorso> viewData, ArrayList<xmlSistemaMovimenti> systems)
{
super(context, attrs);
_context = context;
_viewData = viewData;
_systems = systems;
LayoutInflater.from(context).inflate(res, this, true);
setId(inc);
inc++;
setLayout();
}
private void setLayout()
{
TextView textView;
String text;
for (int i = 0; i < _systems.size(); i++)
{
View quotesView = (View) LayoutInflater.from(_context).inflate(R.layout.row_ticket_detail_system_layout, null, true);
quotesView.setId(i);
// System Id
textView = (TextView) quotesView.findViewById(R.id.systemId);
text = "" + _context.getString(R.string.id_sistema) + " " + _systems.get(i).getAttributeOrVoidString(xmlSistemaMovimenti.ATTR_id) +
" / " + _viewData.size();
textView.setText(text);
// System Columns
textView = (TextView) quotesView.findViewById(R.id.systemColumns);
text = "" + _context.getString(R.string.colonne) + " " + _systems.get(i).getAttributeOrVoidString(xmlSistemaMovimenti.ATTR_n_multiple_sis);
textView.setText(text);
// System Bet Text
textView = (TextView) quotesView.findViewById(R.id.systemBetText);
textView.setText(R.string.importoPerColonna);
// System bet Value
textView = (TextView) quotesView.findViewById(R.id.systemBetValue);
text = "€ " + XmlScommessaInCorso.getQuotaFormattedOrVoid(_systems.get(i).getAttributeOrVoidString(xmlSistemaMovimenti.ATTR_impo_sistema));
textView.setText(text);
LinearLayout primaryLayout = (LinearLayout) findViewById(R.id.primaryLayout);
primaryLayout.addView(quotesView);
}
}
}