RegActivity

import android.content.Intent;
import android.os.UserManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class RegActivity extends AppCompatActivity implements View.OnClickListener{

    Button regRegButton;
    EditText regusername;
    EditText regpassword;
    EditText regrepassword;
    EditText regemail;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_reg);


        regRegButton = (Button) findViewById(R.id.regRegister);



        regusername = (EditText) findViewById(R.id.regusername);
        regpassword = (EditText) findViewById(R.id.regpassword);
        regrepassword = (EditText) findViewById(R.id.regrepassword);
        regemail = (EditText) findViewById(R.id.regemail);


    }


    @Override
    public void onClick(View v) {
        final UserMenager um = UserMenager.getInstance();

        regRegButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(RegActivity.this, MainActivity.class));

                if(UserMenager.isUsernameFree(regusername.getText().toString())){

                    if(UserMenager.strongPassword(regpassword.getText().toString())){

                        if(regpassword.getText().toString().equals(regrepassword.getText().toString())){
                            um.getUsers().put(regusername.getText().toString(),regpassword.getText().toString());
                            Toast.makeText(RegActivity.this,"asadasd", Toast.LENGTH_LONG).show();

                            startActivity(new Intent(RegActivity.this, MainActivity.class));

                        }
                        else{
                            Toast.makeText(RegActivity.this,"The Re.pass is not the same", Toast.LENGTH_LONG).show();
                        }

                    }
                    else{
                        Toast.makeText(RegActivity.this,"The pass is not strong", Toast.LENGTH_LONG).show();
                    }
                }
                else{
                    Toast.makeText(RegActivity.this, "The username is taken", Toast.LENGTH_SHORT).show();
                }




            }
        });

    }
}