Login dan Welcome Project

Desain Form pertama :

Coding LoginActivity.Java

package com.example.validasiinput;

import android.os.Bundle;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

import android.widget.*;

public class LoginActivity extends Activity implements Button.OnClickListener{

       Button bLogin, bClear ;

       EditText etUser, etPass ;

       final Context context=this; // lalu import context

       //Untuk Pindah Tampilan

       //1. AndroidManifest.xml ditambah

       //2. Tambahkan final Context context = this;

       //tambahan baru

      

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_login);

        bLogin = (Button) findViewById (R.id.button1);

        bClear = (Button) findViewById (R.id.Button2);

        etUser = (EditText) findViewById (R.id.editText1);

        etPass = (EditText) findViewById (R.id.editText2);

       

        bLogin.setOnClickListener(this);

        bClear.setOnClickListener(this);

                    

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.login, menu);

        return true;

    }

       @Override

       public void onClick(View sss) {

              // TODO Auto-generated method stub

              switch (sss.getId())

              {

              case R.id.button1: validasiLogin();

             

                     break;

              case R.id.Button2: etUser.setText(""); etPass.setText("");

                     break;

              }

             

       }

       private void validasiLogin() {

              // TODO Auto-generated method stub

              String strUser = etUser.getText().toString();

              if (strUser.trim().equals(""))

              {

                     Toast objToast = Toast.makeText(getApplicationContext(), "Username harus diisi",

                                  Toast.LENGTH_LONG);

                     objToast.show();

              }

              else if (etPass.getText().toString().trim().equals(""))

              {

                     Toast objToast = Toast.makeText(getApplicationContext(), "password harus diisi",

                                  Toast.LENGTH_LONG);

                     objToast.show();

              }

              else if (etUser.getText().toString().trim().length()!=10)

              {

                     Toast objToast = Toast.makeText(getApplicationContext(), "username harus 10 digit",

                                  Toast.LENGTH_LONG);

                     objToast.show();

              }

              else if (etPass.getText().toString().trim().length()<5)

              {

                     Toast objToast = Toast.makeText(getApplicationContext(), "pasword harus lebih dari 4 digit",

                                  Toast.LENGTH_LONG);

                     objToast.show();

              }

              else if ( etUser.getText().toString().trim().equals("2010240333")

                           && etPass.getText().toString().trim().equals("12345"))

              {

                     //JikaLoginBerhasil

                     //3.

                     Intent i = new Intent (context, WelcomeActivity.class);

                     //4.

                     startActivity(i);

              }

              else

              {

                     Toast objToast = Toast.makeText(getApplicationContext(), "username dan pasword tidak cocok",

                                  Toast.LENGTH_LONG);

                     objToast.show();

              }

              }

       }

 Desain Form kedua :

Coding.LoginActivity.java:

package com.example.validasiinput;

import android.app.Activity;

import android.os.Bundle;

public class WelcomeActivity extends Activity {

          protected void onCreate(Bundle savedInstanceState) {

               super.onCreate(savedInstanceState);

               //Ubah Layoutnya

               setContentView(R.layout.welcome_activity);

       }

}

 Tampilan di Emulator :

SEMOGA BERMANFAAT

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