Develop Reference

How to ignore spaces between text editview Android

I am trying to ignore spaces in editview between text, I am not quite sure how I can go about doing this. I know I can use trim feature to ignore spaces before and after the full text but how do I ignore space between strings if there is any;
String myTextEdited myText.getText().toString().trim();
For example, if I have / user types in this;
Allan Bob
3523 JKO
NY1 U90
I want to ingore spaces when I read this in my if statement or put it in another variable for example;
String name = "AllanBob"
For example, to ignore upper and lower cases I am doing this;
if (myText.getText().toString().trim().equalsIgnoreCase(userInput)) {
// do something
} else {
// do something
}
What I would like to do is add another feature in here that also ignores spaces before, between and after text e.g. instead of;
myname is Henry . (space until here)
It should read it as mynameishenry but to the user it still appears as they have written it.
Please let me know if my question was not clear, I will try explaining it better
EDITED:
is it possible to ignore spaces in string that I have inside my if statement. For example;
if (myText.getText().toString().trim().equalsIgnoreCase("Henry 0887")) {
// do something
} else {
// do something
}
but currently if the user types in henry0887, the if statement does not validate it because I added a space inside my validation text and therefoe its looking for a space in the text, is it possible to over come this, so even if I have space inside my validation it ignores it.

Did you try this:
String myString = myEditText.getText().toString();
myString = myString .replace(" ", "");
Hope it helps
EDIT:
if (myText.getText().toString().replace(" ", "").equalsIgnoreCase(userInput) || myText.getText().toString().equalsIgnoreCase(userInput)) {...

Try this,
if(myText.getText().toString().trim().replace(" ","").equalsIgnoreCase(userInput)) {
// do something
} else {
// do something
}
Hope this helps.

use replaceAll() method.
str = str.replace(" ","");
or for all space chars:
str = str.replace("\\s+","");
EDIT
if (myText.getText().toString().replace("\\s+","").equalsIgnoreCase(userInput)) {
// do something
} else {
// do something
}
EDIT2
if (myText.getText().toString().replace("\\s+","").equalsIgnoreCase("Henry 0887".replace("\\s+",""))) {
// do something
} else {
// do something
}

How do I recognize the initial white space/spaces in my edit text?

I am trying to recognize the initial spaces in my edit text, such that if a user enters " " (any number of spaces) ,it doesnt enable my done button.
So, far I have this code in placE:
String sendString = mSendText.getText().toString();
if(sendString.equals(" ")||sendString.isEmpty()||sendString ==null ){
//do nothing
}else {
//do my stuff
}
The thing is I want the else to work only when I have string with any characters in it as long as it is not JUST ALL whitespace in the beginning.
The code I have works for only 1 whitespace. I want to make it such that no matter how many number of whitespaces exist in the beginning it will remove them or not enable my done button as long as no characters show up.
For example :
This should go to the if loop: " "
This should go to the else loop: " Hello, it's me"
Any ideas?
Thanks!

Just replace equalsTo() to startsWith():
String sendString = mSendText.getText().toString();
if( (sendString == null) || (sendString.startsWith(" ")) || (sendString.isEmpty())){
//do nothing
}else{
//do my stuff
}
Perhaps, if you're interested only in relevant text, you can exclude white spaces in the beginning/ending just using trim()
String sendString = mSendText.getText().toString().trim();
if(sendString.isEmpty()) {
//do nothing
}else{
//do my stuff
}

Use trim() to delete odd spaces from begin and end of String.
String str = new String(" Welcome to Tutorialspoint.com ");
System.out.print("Return Value :" );
System.out.println(Str.trim() );
Returns Welcome to Tutorialspoint.com

I would remove all spaces then check to see if there is anything in the string after that.
String sendString = mSendText.getText().toString().replace(" ","");
if(sendString.isEmpty()){
// do nothing
}else{
// do something
}

android: check if the string not only white spaces

How can I check if a string contains anything other than whitespace?
This code didn't work:
String string = " \n\n\t\t ";
if(string.length()==0) doSomething();
since spaces and new lines have values.
Can anyone tell me how can I do it?
Note: minSDKVersion = 5
Regards :)

Try this:
if (string.trim().length() == 0) { /* all white space */ }
Alternatively, you can use a regular expression:
if (string.matches("\\w*")) { . . . }

try:
if (string == null || TextUtils.isEmpty(string.trim()) doSomething();

You can use trim to remove whitespace from both ends of the string. Then compare with the empty string.

Kotlin:
The below code takes the string, trims all of the letters down, and checks to see if the result is white space by using .isEmpty().
val str = " "
if (str.trim().isEmpty()) {
// white space only
} else {
// this string has actual characters/letters in it
}

Try: it works
if (txt.getText().toString().trim().matches(" ")){
Toast.makeText(getApplicationContext(), "You did not select any text"
, Toast.LENGTH_LONG).show();
}
else{
}

"if" not working properly

hey,
i'm new to android and i have a problem. here is my code:
Log.v("Test", "" + lv_arr_id[0]); //displays 0
if (lv_arr_id[0] == "0") {
Toast.makeText(longOperationContext, "A", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(longOperationContext, "B", Toast.LENGTH_SHORT).show();
}
lv_arr_id[0] has the value "0" and is a string, its external data pulled via json from web. however each time the B toast gets triggered instead of the A toast. the value really is 0, i tested this in the logcat.
any ideas why?
thanks in advance

== compares the object and not the String contents. Use .equals("0") instead.

It's not that if is not working properly.
In Java, you can't use == to compare objects of java.lang.String class. You need to use equals method.
Something like:
if (lv_arr[0].equals("0")) {
//
} else {
}

validating EditText input

Trying to confirm that an EditText tool is not empty when the user clicks a button. Whenever the EditText is not blank the code works. But whenever it is blank my program crashes. Any ideas what I'm doing wrong? Thanks.
if (et1.getText().toString() != null) {
inpt_weight = Integer.parseInt(et1.getText().toString());
Toast.makeText(getBaseContext(), "weight is not null", Toast.LENGTH_LONG).show();
} else {
inpt_weight = 0;
Toast.makeText(getBaseContext(), "weight is null", Toast.LENGTH_LONG).show();
};

I think its trying to parse an empty string("") to an integer which is not possible
try:
if (!et1.getText().toString().equalsIgnoreCase("") && et1.getText().toString() != null)

This will be a good way:
if(et1.getText().toString().trim().length()==0){
Log.d("No data","No text found in the edit text");
}
This also checks if the user had put nothing but only spaces.
In your code, I see you're converting the text to numbers.
In this case, either put correct IMEMethod for the edit text so that it takes only numbers, or check in your code that user has entered only numeric characters, else you'll end up with a NumberFormatException while conversion if the user has entered non numeric characters.

Try the following code please..
if(et1.getText().toString().equals("")){
Toast.makeText(getApplication(), "weight is null", Toast.LENGTH_SHORT).show();}
else{
inpt_weight = Integer.parseInt(et1.getText().toString());
Toast.makeText(getApplication(), "weight is not null & it is : "+inpt_weight,Toast.LENGTH_SHORT).show();
}