Edit Text Validation

Edit Text is a user input control where user can input something as string or any other data.Edit Text accept any type of data just drag and drop in XML but you have to setInputType to get in specific format data.

User Can get Text Value from Edit Text it can be in simple format or any specific format form above if any.

Simple way to get Text value from Edit Text when user click on Button.

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01 02 03 04 05 06 07 08 09 10 11 12 13 14	public class EditText_Example extends Activity {     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);           setContentView(R.layout.main);           final EditText edt = (Button) findViewById(R.id.EditText_Id);         button.setOnClickListener(new View.OnClickListener() {             public void onClick(View v) {                 edt.getText().toStrign();             }         });     } }

public class EditText_Example extends Activity {
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        final EditText edt = (Button) findViewById(R.id.EditText_Id);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                edt.getText().toStrign();
            }
        });
    }
}

Here I will show some of the validation which we have to check manually while we are getting value form Edit Text.

• PersonName


• Email Address


• Phone


• Sign Number

PersonName :

Here we start with Person Name by default if you drag and set InputType="textPersonName"  it will not accept on name or alphabets that also accept numbers . so here i write a code for that only accept alphabets so now when you enter any text then that will check is it text or other symbol ?
Here i wrote a function which we will use in addTextChangedListener for validating valuw when user are typing the value.

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01 02 03 04 05 06 07 08 09 10 11 12	public void Is_Valid_Person_Name(EditText edt) throws NumberFormatException {     if (edt.getText().toString().length() <= 0) {         edt.setError("Accept Alphabets Only.");         valid_name = null;     } else if (!edt.getText().toString().matches("[a-zA-Z ]+")) {         edt.setError("Accept Alphabets Only.");         valid_name = null;     } else {         valid_name = edt.getText().toString();     }   }

public void Is_Valid_Person_Name(EditText edt) throws NumberFormatException {
    if (edt.getText().toString().length() <= 0) {
        edt.setError("Accept Alphabets Only.");
        valid_name = null;
    } else if (!edt.getText().toString().matches("[a-zA-Z ]+")) {
        edt.setError("Accept Alphabets Only.");
        valid_name = null;
    } else {
        valid_name = edt.getText().toString();
    }

}

Now call above function into addTextChangedListener

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01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18	name.addTextChangedListener(new TextWatcher() {       @Override     public void onTextChanged(CharSequence s, int start, int before,         int count) {         // TODO Auto-generated method stub     }     @Override     public void beforeTextChanged(CharSequence s, int start, int count,         int after) {         // TODO Auto-generated method stub     }     @Override     public void afterTextChanged(Editable s) {         // TODO Auto-generated method stub         Is_Valid_Person_Name(name); // pass your EditText Obj here.     } });

name.addTextChangedListener(new TextWatcher() {

    @Override
    public void onTextChanged(CharSequence s, int start, int before,
        int count) {
        // TODO Auto-generated method stub
    }
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count,
        int after) {
        // TODO Auto-generated method stub
    }
    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub
        Is_Valid_Person_Name(name); // pass your EditText Obj here.
    }
});

Email Address :

InputType="phone"  when you enter number it accepted but not in Phone Number Format like if you Enter your Number 9898998989 . It will show same as but if you want to input in format then you have to call that on addTextChangedListener(new PhoneNumberFormattingTextWatcher());  So .its shows like 989-899-8989.

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1	phone_number.addTextChangedListener(new PhoneNumberFormattingTextWatcher());

phone_number.addTextChangedListener(new PhoneNumberFormattingTextWatcher());

Sign Number :

InputType="numberSigned"   i check with minimum and maximum length are valid or not.?  call below function in

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01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16	public void Is_Valid_Sign_Number_Validation(int MinLen, int MaxLen,         EditText edt) throws NumberFormatException {         if (edt.getText().toString().length() <= 0) {             edt.setError("Sign Number Only");             valid_sign_number = null;         } else if (Double.valueOf(edt.getText().toString()) < MinLen ||             Double.valueOf(edt.getText().length()) > MaxLen) {             edt.setError("Out of Range " + MinLen + " or " + MaxLen);             valid_sign_number = null;         } else {             valid_sign_number = edt.getText().toString();             // Toast.makeText(getApplicationContext(),             // ""+edt.getText().toString(), Toast.LENGTH_LONG).show();         }       } // END OF Edittext validation

public void Is_Valid_Sign_Number_Validation(int MinLen, int MaxLen,
        EditText edt) throws NumberFormatException {
        if (edt.getText().toString().length() <= 0) {
            edt.setError("Sign Number Only");
            valid_sign_number = null;
        } else if (Double.valueOf(edt.getText().toString()) < MinLen ||
            Double.valueOf(edt.getText().length()) > MaxLen) {
            edt.setError("Out of Range " + MinLen + " or " + MaxLen);
            valid_sign_number = null;
        } else {
            valid_sign_number = edt.getText().toString();
            // Toast.makeText(getApplicationContext(),
            // ""+edt.getText().toString(), Toast.LENGTH_LONG).show();
        }

    } // END OF Edittext validation