This question already has answers here:
How to make an Android Spinner with initial text "Select One"?
(36 answers)
Closed 9 years ago.
I have a spinner like this:
Spinner spinner = new Spinner(context);
spinner.setPadding(0, 10, 10, 0);
ArrayAdapter<ItemValue> aa = new ArrayAdapter<ItemValue>(context,
android.R.layout.simple_spinner_item,elemItemSet);
aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(aa);
Now I need a add a default/initial text programmatically (without using xml) & without adding into list 'elemItemSet'.
Is it possible?
To show defualt value(Select) at spinner,you have to add "Select" text into your array list at O index. And apply condition like "When the value of spinner is 'select' then show message to user like 'Select any value'".
I hope it will help you.
Thnaks
Related
This question already has answers here:
Dynamically creating Buttons and setting onClickListener
(9 answers)
Closed 4 years ago.
I am developing an android attendance system in which the user enters the total number(int) of students in a class in Main_Activity and that many numbers of buttons are created in 2nd activity. How can I use the user input to create a list of buttons (used to mark present or absent) during runtime.
Code to save Int value
EditText total_roll_Name = (EditText) findViewById(R.id.roll_total_input);
String total_roll_text = total_roll_Name.getText().toString();
i.putExtra("totalRoll", total_roll_text);
Create button run time by below code and add into linear layout
Button dButton= new Button(this);
myButton.setText("Add Me");
LinearLayout lay= (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams layPar= new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
lay.addView(dButton, layPar);
i think you need attendance module right?.you have all student roll no in database.if you have then get a data from database in custom listview with checkbox and you can easily mark or unmark present or not.i already developed this type of system.if you need then i send you.
This question already has answers here:
How to make an Android Spinner with initial text "Select One"?
(36 answers)
Is it possibile to set hint Spinner in Android [duplicate]
(3 answers)
Closed 6 years ago.
I'm using adapter.add for adding a title in my spinner, but how to hide first item in an android spinner dropdown?
Here is My Code:
var spinner1 = FindViewById<Spinner>(Resource.Id.spinner1);
var adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleSpinnerItem);
spinner1.Adapter = adapter;
adapter.Add("Select one...");
adapter.Add("Name");
adapter.Add("Mobile");
adapter.Add("Age");
See images below:
This question already has answers here:
Round a double to 2 decimal places [duplicate]
(13 answers)
Closed 9 years ago.
I am populating a ListView using TextView as a row through SimpleCursorAdapter.The numbers in the TextView are displayed as say 8 or 2.6786 etc.I want them to be displayed as 8.00 or 2.67 etc.Can it be done through XML(like input Type method etc).Please suggest a wayout.
The question is bit different as under:
The codes are:
// THE DESIRED COLUMNS TO BE BOUND
columns = new String[] { slStock.KEY_SCRIPT, getColumnName(2),c.getColumnName(3)};
// THE XML DEFINED VIEWS FOR EACH FIELD TO BE BOUND TO
to = new int[] { R.id.tvstockscrpt, R.id.tvqty ,R.id.tvstockrate};
// CREATE ADAPTER WITH CURSOR POINTING TO DESIRED DATA
SimpleCursorAdapter cursAdapter = new SimpleCursorAdapter(this,R.layout.rowstock, c,columns, to);
lvstockdisplay.setAdapter(cursAdapter);
Here you will notice that the cursor c fetches data (from database query in background) and populates it in the ListView directly.The question is how can I format the cursor data for say the TextView whose id is(R.id.tvstockrate) and which is populated by c.getColumnNames(3).At which point in the codes the format statement can be inserted.
What about formatting the text when you set it?
yourTextView.setText(String.format("%.2f", value));
This could be your solution
yourTextView.setText(String.format("%.2f", value));
This question already has answers here:
Spinner does not get focus
(4 answers)
Closed 10 years ago.
I have a registration form where flow goes as EditText1->EditText2->Spinner->Editext3 ,but on tab press the of EditText2 control is transferred to editText3 and not Spinner How can i do that in android??Can anyone help plz
Use this before your Oncreate()
Spinner spin = (Spinner) findViewById(R.id.spinner1);
spin.setFocusable(true);
spin.setFocusableInTouchMode(true);
spin.requestFocus();
Hi I have a spinner for which I would like to change its entry. I have created an array in the values folder. I know that I can edit the entry of the spinner by right clicking on it. But I want to know, how can I change the entry of the spinner using code. I was hoping there would be something like spinner5.editEntries
Can someone help please?
Spinner Spinnermiles = (Spinner) findViewById(R.id.Spinnermiles);
String [] arrmile ={"5","10","20","30","40","50","70","80","90","100"};
adapter = new ArrayAdapter<String>(Searching.this,android.R.layout.simple_spinner_item,arrmile);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinnermiles.setAdapter(adapter);
If you want to change item in spinner at position 3 (which is "30" in example),
Set value at that position e.g.
arrmile[3] = "enter new value you want";
and after that call
adapter.notifyDataSetChanged();
then value at that position will be get updated.