I'm fairly new to Android and some of its core concepts. I'm looking for a basic login screen. In order for the user to login http functions (GET) methods must be used to validate the credentials with the server using JSON object. The user has 2 login options.
Examiner Login Info:
User Login Info:
Server: http://mohameom.dev.fast.sheridanc.on.ca/users/verifyUserData.php?name=user&password=12345
Thanks for the help in advance!
How would one go about doing this?
Xml File:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="@+id/txtSignin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="Login"
android:textAppearance="@style/TextAppearance.AppCompat.Large"
android:textColor="@color/colorAccent" />
<EditText
android:id="@+id/edtUser"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:layout_marginTop="20dp"
android:layout_marginHorizontal="30dp"
android:text=""
android:hint="Username"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"/>
<EditText
android:id="@+id/edtPass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginHorizontal="30dp"
android:ems="10"
android:inputType="textPassword"
android:text=""
android:hint="Password"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"/>
<Button
android:id="@+id/btnLogin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginHorizontal="30dp"
android:text="Login"
android:onClick="loginUser"
android:textAppearance="@style/TextAppearance.AppCompat.Large"/>
</LinearLayout>
HTTP connection forbidden on default, you should allow it android:usesCleartextTraffic="true"
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
android:theme="@style/AppTheme" >
<activity android:name=".LoginActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Login Activity (Kotlin, copypast from the documentation -> https://developer.android.com/training/volley/simple#kotlin )
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.login)
btnLogin.setOnClickListener {
val queue = Volley.newRequestQueue(this)
val url =
"http://mohameom.dev.fast.sheridanc.on.ca/users/verifyUserData.php?name=${edtUser.text}&password=${edtPass.text}"
val stringRequest = StringRequest(
Request.Method.GET, url,
Response.Listener<String> { response ->
txtSignin.text = response.toString() // Process response if needed
},
Response.ErrorListener {
txtSignin.text = "That didn't work!"
})
queue.add(stringRequest)
}
}