Complete Sign Form Android

Validate gender field

assalamualaikum my name is the mucukunda and welcome back to the next part of the city credit application today in this tutorial we are going to perform the validations in android studio so before getting started I just want to make a request you all that please voice the complete tutorial from start to end because I already created a validation tutorial previously for the Bulls land application and there are some people who skip the video and they again asking about something that is already defined in the video so let's get started let's run the application I have I did all the validations for the sign up as you can see we have three sign up activities so for the first one when the user is going to click the next button he is going to ask inter or to fulfill all the data in the fields and then username now you can see I have added a space at the end and try to go for the next field and enter you can see there is no error and the space has already removed but after the space if I am going to write something then click on the next you can see the error which is saying no white spaces are allowed so we have we are going to deal with that then we have email validation let's say we are not going to add add / edit and click next which is showing invalid email we need to define proper email click Next then again remove the white spaces as well and then in the password field currently you can see it is saying the field cannot be empty and after adding some password we are inside this second screen of the signup and in here I have added a check for the age that user should have at least 14 years of age to create the count on our application so let's say I am going to click Next and it is saying you are not eligible to apply because anyone who is born in 2012 is not going to be valid for our application so let's make it some small values let's say 2001 then it's saying please like gender select the gender and click Next after everything I we are sending basically data or passing data from each activity to the next activity and in here this is basically just a simple check which again not going to allow white spaces in between and if there is any white space at the end it is simply going to redirect to the next screen so this is what we are going to create in this tutorial so without wasting time let's get started open the Android studio project and currently I am inside our city guide application and we are going to perform the validations on our signup screen so the first thing you need to assign IDs to each field and I have already assigned IDs as I have assigned IDs to text input layout so in the Java file I am going to call the variables or to create the variables for the hopes they will again going to be text input layout type so assign IDs to each of them if you assign ID over there inside this text input edit text then inside the Java you have to create variable with the name text input edit text so not a big deal you can assign IDs to both of them after assigning IDs inside this button we want to perform the validation when user click on this next button so inside that you've created a phone click method and call this function call next sign-up screen so in the previous tutorial we were just calling the next screen by adding some animations in it so now we want to first validate and then send this for fields data to next activity along with the validation let's jump back to this file over here which is this function call next sign-up screen so as I told you we were just adding some animation and causing starting this activity over here so for now let's close it the first thing you need to do is you need to declare the variables as I told you this is the text input layout and we have four variables and then we have created four hooks as well so now inside before going to call anything inside this function we need to create some private and they are going to return some true and false so they will be have a return type boolean very dead home name and that's it now inside this function let's create a stir because we need to get value of the user full-name string value is equal to full name so this is basically this full name full name dot get text so this is not going to be get text as we are using the material design and we have assigned the ID to layout so we need to define get edit text then we need to define get text dot to string and make sure to add sold trim at the end of string because we do not want to store any spaces to our database okay after this value we want to make sure that if value thought is empty so if the value is empty we just want to set the error to this field which is full name dot set error so this set error is basically a built in function for the edit text fields so error is going to be field cannot be empty you can modify these errors as per your own requirements and we need to return false this is error and in the else statement we need to return true and we first need to remove this error full name dot set error if you pass null in it then it will automatically remove this error but the error for the material design is going to take some space below each field so to remove that field we will write full name dot set error enabled and pass false so this will basically remove that space extra as well and then as we need to return and this time it is going to be true because this s will be executed when the field is not empty user has written something press or ctrl L to align the code so that's it for the full name we do not have to add any other validations so let's just copy it and paste it change it name to user name now inside this user name we we need to make sure that user name not be empty and again and also there should not be any white space or any space between the username so first let's change it to username to get this value and copy and paste it over here as well okay to add a check for the white spaces we need to create a string check spaces is equal to so you just have to paste this code you can get the core linkage in the description this means you can write any capital a - small Z any of it this means from capital small and then you can the W means void spaces so if you do not add any limitation so this is basically a limitation in the curly braces if you do not have any limitation it is going to very date only first white space and then it is not going to check anything else so you should have to define the spaces so make sure it is one at the start and limits to 20 because we are going to limit 20 characters for the username and we are going to ask the user that username is going to be too big so 20 characters are fair enough so let's add else if statement value thought then is greater than 20 if the value of the username is going to be greater than 20 then we are going to again set error so let's just copy it when and again we are going to return false here and error is going to be too large or too big okay the next thing for the white spaces is again add elsif and inside you need to add value dot matches and pass check spaces in it so we need to add an odd sign so if this value is not going to match with this method defined over here then we will shoot then we should generate some error so again paste it username door the error is going to be no white spaces or out and then again written false and if these trees these three are not the cases then we are going to go for the else and it is going to turn true so press alt ctrl L to align the code simply copy it again close it and paste it one more time change the username to email and for the email we need to change first let's change their names let's change it over here because we do not have any length validation for the email close it and change it over here so for the email let's change this checks ps/2 and again I will share this code in the description on a website so this is going to be check email copy and paste change its message to invalid email and again this is going to turn false okay that's it for the email no the last thing is going to be copy and paste and it is going to be for the password and change the variables password cannot be empty and we need to add some password check over there so we are going to change this check password and simply just cut it and paste these lines and my previous videos I have added these commands for the validation and so if you need to add some checks as defined over here if you need do not need any letter you can comment it if you need it just uncomment it so it depends on your own requirements so we need to change it to check password what suppose password should contain four characters so that's it for these functions after grading these functions inside the function which is going to be called when user presses the next button so when user presses the next button we are not just going to call the next activity but before that we are going to make sure to perform all the validations so the first one is validate full name so it is going to return true if will be executed by default when it is going to return true but we want to execute this if when there is false statement return so when you add the exclamation mark then it will going to add false here then it will be executed or the single or means it is going to execute all the functions defined inside this if one after another so if we add two ORS that means either this one or the second one so we are not going to do this we are going to make sure that all functions should be executed so after we have user name we need to validate email and validate password so now inside this if they are going to if any one of them going to return false is if will be executed and we will simply return in other case if there is a success story if if they all return true then it is going to not wanna return anything and we can simply jump to our next screen so - before moving to the next screen we want to pass our data of these all four fields to the next screen as well so for that okay inside this second file you can see we have gender over there and we have a date or the calendar you can say so how we can get this data and how we can validate it so let's go back to the split screen so as you can see this is a radio group and inside this radio group we have radio buttons so I have initialized IDs to radio group radio group is simply a radio group and then we have IDs male female and others inside the radio buttons three buttons with three IDs and then for this date picker we have the ID age underscore picker right after analyzing the IDs let's go back to the signup and in here you need to define the radio group first which is simply a radio group then I have declared only one radio button as you can see we have three buttons three radio buttons but I have created only one radio button variable and you guys can know in a minute so then we have a date picker with a variable simply a date picker now inside the hooks make sure you you should add a hook of the variable which is a radio group note to this radio button and then we have a date picker hook as well so we have two hooks again inside this button my user is going to click on this button on the on click this function is going to be called which is called third signup screen so it is over here called third sign of screen and again it is going to add animations and calling the next activity so before moving to perform anything let's again create private boolean value get gender and now inside this value gender we need to first get the values so we for the gender we just need to check one single thing if some radio button is clicked or not or the checked or not so for that we are going to write simple if the radio group dot get checked radio button ID so this is going to be get the single ID of the radio button if it is going to be equal equal to minus 1 this means the minus 1 means none of the radio button has been selected so if it is going to be minus 1 then we are going to return false and again instead of showing the error this time we are going to create a toast please select gender right and else we are going to return true press orphan Paul L to align the code so we're either gender is just going to contain this if there is something inside the radio button so it is going to return true okay now that's it for the very read gender validate each function you insert this value today's function what we are going to do is we basically want to make sure that the user should have minimum 10 years of age or let's suppose any limit you want to add so for their let's we need to first create the current here then we need to get the ear entered by the user and then we need to get some age difference so int current year is equal to calendar thought get instance you should have to create the instance first with the cleanser otherwise you cannot do it then you need to get and inside these brackets right cleanser dot year with the capital year and add add semicolon so we have a current year inside this now the next thing we need int user age is equal to user ages we have the user age inside the date picker so we will write date picker dot get here so this is going to return the year entered by the user now we need to have in is is valid is equal to current year which is going to be maximum so it should not return minus of the negative value so make sure the current year is at the top at the first current year - user age and the said this is going to return some value and now we are just going to create if is age valid is less than let's suppose 14 years then we want to return false and want to let show a toast message and you are not eligible to apply let's say this message and in the else let's return true press alt ctrl L to align the code okay now we have validate gender and validate age factors and now to call these functions let's go inside the function which will be called when user click on the next button so we are going to follow the same procedure if validate the first one is gender or validate age and we have to add not signs so we get false in them each time and if we receive false by even one even from one of the function then we will simply return it we are not going to call the next activity so we can get the value of the radio group so you can see at the top we have radio button which is saying a selected age so inside here we will create a hope selected age is equal to fine view by ID we have three buttons so we don't know which button is going to be called so we will use Radio Group dot get checked video button ID the first one and this is going to return the ID of the selected radio buttons so by that way we are going to create the hook of that selected video button simply close it now we have created the hook so so the next one is the very simple switch it is dot get text so by doing this we can easily get the text of the user also note the age so this is basically selected gender copy and paste it let's create a string which is going to be gender and local strings with underscores at the start dot to sing okay we have gender now we need to get the date in today is equal to day pickle dot get day of the month this is going to return the day then we have month and then we have here change it to get month and to get here now we can combine them by this way string date is equal to D plus backslash or this sign it depends then we have month sorry add a plus sign then month then again a backslash then plus then we have here and that's it now we have date inside the string so we have a gender and we have our date so we are going to pass this gender and date in a same way as we have passed our data from this sign up by this way we are going to perform the validations thank you for watching if you are new to this channel please subscribe it and if you learn something new please like the video again thank you for watching take care a 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