Develop Reference

Best way to get int from user

I'm needing to get an integer from the user for one of my apps and I have tried using a text edit but it didn't seem to work, so I'm wanting to know another way of getting an integer from the user. The int will be positive numbers only and no more than 2 digits.

Use EditText
You can limit the number of digits like this
Update:
Then you need to add a listener
http://developer.android.com/reference/android/widget/TextView.html#addTextChangedListener(android.text.TextWatcher)
a relevant question:
android edittext onchange listener

You have to use EditText.. then from in Your Activity
String s = ed.getText().ToString();
int i = 0;
if(s!=null)
i= Integer.valueOf(s);
To make sure keyboard only show numbers,
make sure you add
android:input="number"
to your EditText in the XML
UPDATE
yourEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
String s = yourEditText.getText().ToString();
int i = 0;
if(s!=null)
i= Integer.valueOf(s);
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
public void onTextChanged(CharSequence s, int start, int before, int count) {}
});

you can use properties in your XML .
use this line to limit input text in numbers in XML :
android:inputType="number"
and use this line to set your specific character:
android:digits="1234567890"
i think it is the best way for this purpose.

Entering Decimal value in Edit text dynamically

I am working in an Android application.In my application there is a edit text. in that
edit text if user enters 12, it has to change dynamically as 12.00. which means it only
accept decimal values. if user enters as 12.3 then it should become 12.30.and if 12.35
then it should be 12.35 only. it will not allow user to enter more than two after dot.
Please help in this scenario?

Use a TextWatcher to handle dinamically the input, then inside the TextWatcher use something like DecimalFormat to change the text.
yourEditText.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
#Override
public void afterTextChanged(Editable s) {
// do something here
DecimalFormat form = new DecimalFormat("0.00");
String FormattedText=form.format(s.toString());
}
});

Editext validation android

In Edittext Android :
How to implement this feature if user entered any valid numeric value it should get displayed in the form of decimal value.
e.g If user enters 4 then it should get displayed as 4.000 instead of only 4.
Also can be done using DONE button click handler of virtual keypad.

You can use like this
EditText et = (EditText)findViewById(R.id.myEditText);
et.addTextChangedListener(new TextWatcher(){
public void afterTextChanged(Editable s) {}
public void beforeTextChanged(CharSequence s, int start, int count, int after){}
public void onTextChanged(CharSequence s, int start, int before, int count){
//Check your et value and set it back.
// Retrieve 4.. set it to 4.000
}
});

Have you tried this on your XML?
android:inputType="numberDecimal"

Parse the string you are getting from editext to double or float in the click of a done button or wherever you want.

how to append text from edittext when the user inputs new texts in editext

I'm making a scrabble scorer app. And he user inputs the letter, in EditText, the score is computed and the word form and is displayed too...Now if another player is to add letters to the previous word the user should not reenter the letters in the word he just needs to add the letter from the previous word...say-- "inter" is previous word ... adding "n" should display "intern" adding again "ational" should display "international"....
Any help would be greatly appreciated...thankss a lot...

TextWatcher inputTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
textview.setText(s.toString());
}
}
public void beforeTextChanged(CharSequence s, int start, int count, int after){
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
};
editText.addTextChangedListener(inputTextWatcher);
Try this one

How to change focus from one editbox to another in android

I have three editboxes which has retrict to enter only one numeric digit on each box.when i enter the value of first box the focus should be moved from 1st box to 2nd.After entering value to 2nd box.,its focus should automatically moved to 2nd to 3rd like that i need to do.Could anybody help me regarding this?

You can use requestFocus() API to shift the focus from the code,
Keep listening for the text, using textWatcher, once specified limit is reached, call EditTextreference.requestFocus() to shift the focus.

This code moves focus from one EditText to another when EditText length greater than 1.
EditText et1,et2;
et1 = (EditText)findViewById(R.id.id1);
et2 = (EditText)findViewById(R.id.id2);
et1.addTextChangedListener(new TextWatcher()
{
public void afterTextChanged(Editable s)
{
// Abstract Method of TextWatcher Interface.
}
public void beforeTextChanged(CharSequence s,
int start, int count, int after)
{
// Abstract Method of TextWatcher Interface.
}
public void onTextChanged(CharSequence s,
int start, int before, int count)
{
Integer textlength = et1.getText().length();
if(textlength>=1){ //If text length greater than 1 move to next EditText
et2.requestFocus();
}
}
});