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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.example.android.autofillframework.app
     17 
     18 
     19 import android.content.Context
     20 import android.content.Intent
     21 import android.os.Bundle
     22 import android.support.v7.app.AppCompatActivity
     23 import android.widget.Toast
     24 import com.example.android.autofillframework.R
     25 import kotlinx.android.synthetic.main.login_activity.clear
     26 import kotlinx.android.synthetic.main.login_activity.login
     27 import kotlinx.android.synthetic.main.login_activity.passwordField
     28 import kotlinx.android.synthetic.main.login_activity.usernameField
     29 
     30 
     31 class StandardSignInActivity : AppCompatActivity() {
     32 
     33     override fun onCreate(savedInstanceState: Bundle?) {
     34         super.onCreate(savedInstanceState)
     35         setContentView(R.layout.login_activity)
     36         login.setOnClickListener { login() }
     37         clear.setOnClickListener { resetFields() }
     38     }
     39 
     40     private fun resetFields() {
     41         usernameField.setText("")
     42         passwordField.setText("")
     43     }
     44 
     45     /**
     46      * Emulates a login action.
     47      */
     48     private fun login() {
     49         val username = usernameField.text.toString()
     50         val password = passwordField.text.toString()
     51         val valid = isValidCredentials(username, password)
     52         if (valid) {
     53             val intent = WelcomeActivity.getStartActivityIntent(this@StandardSignInActivity)
     54             startActivity(intent)
     55             finish()
     56         } else {
     57             Toast.makeText(this, "Authentication failed.", Toast.LENGTH_SHORT).show()
     58         }
     59     }
     60 
     61     /**
     62      * Dummy implementation for demo purposes. A real service should use secure mechanisms to
     63      * authenticate users.
     64      */
     65     fun isValidCredentials(username: String, password: String): Boolean {
     66         return username == password
     67     }
     68 
     69     companion object {
     70 
     71         fun getStartActivityIntent(context: Context): Intent {
     72             val intent = Intent(context, StandardSignInActivity::class.java)
     73             return intent
     74         }
     75     }
     76 }