Android Login and Registration with Php and Mysql - InduceSmile [PDF]

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Android Login and Registration with Php and Mysql

ANDROID LOGIN AND REGISTRATION WITH PHP AND MYSQL ANDROID LOGIN AND REGISTRATION WITH PHP AND MYSQL

ANDROID SOURCE CODE POLL Which of the below listed source codes should we publish next month? Android E-Book App

In this android tutorial we are going to learn how to implement android login and registration with Php and

Appointment Booking App

Mysql /> We are going to use android API for HTTP request. Once we get the Json output as an InputStream, we will convert it to a string. The string object will be pass as a parameter to an instance of JsonObject class. We will also use an AsyncTask class to make server calls in a background Thread. This is important so that will not end up blocking the main UI Thread. Before we start, the first thing I will do is to list the environment and tools I used in this android tutorial but feel free to use whatever environment or tools you are familiar with. Windows 7 Android Studio Samsung Galaxy Fame Lite Min SDK 14 Target SDK 19 To create a new android application project, following the steps as stipulated below. Go to File menu Click on New menu Click on Android Application Enter Project name: AndroidLoginAndRegistration Package: com.inducesmile.androidloginandregistration Keep other default selections. Continue to click on next button until Finish button is active, then click on Finish Button Once you are done with creating your project, make sure you change the package name if you did not use the same package.

MAIN LAYOUT We will start by adding an TextView, EditText and Button controls in our activity_main.xml layout file. If you are using Eclipse or Android Studio, you can switch to the design view and drag and drop this Views inside your layout file. You can also copy and paste the following code below into this file if you don’t want to do it yourself.

The text content of our View components are stored in the strings.xml file. The contain of the file is shown below

AndroidLoginAndRegistration Hello world! Settings Username Password Email Login LoginActivity I do not have a username and password details. Click the button below to register Register Now RegisterActivity WELCOME You have been successfully login Sign Up Now

Since we made a single line of change in our Manifest.xml file, the complete code is shown below



MAINACTIVITY.JAVA In our MainActivity.java file, the instances of our Button and EditText controls were obtained. User validation is implemented to make sure that user add the expected xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" android:background="#08253c" tools:context="inducesmile.com.androidloginandregistration.LoginActivity"> In LoginActivity.java, the stored xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" android:background="#08253c" tools:context="inducesmile.com.androidloginandregistration.RegisterActivity">

RegisterActivity.java

package inducesmile.com.androidloginandregistration; import android.content.Intent; import android.os.AsyncTask; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.json.JSONException; import org.json.JSONObject; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; public class RegisterActivity extends ActionBarActivity { protected EditText username; private EditText password; private EditText email; protected String enteredUsername; private final String serverUrl = "path to your server"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_register); username = (EditText)findViewById(R.id.username_field); password = (EditText)findViewById(R.id.password_field); email = (EditText)findViewById(R.id.email_field); Button signUpButton = (Button)findViewById(R.id.sign_up); signUpButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { enteredUsername = username.getText().toString(); String enteredPassword = password.getText().toString(); String enteredEmail = email.getText().toString(); if(enteredUsername.equals("") || enteredPassword.equals("") || enteredEmail.equals("")){ Toast.makeText(RegisterActivity.this, "Username or password or email must be filled", Toast.LENGTH_LONG).show(); return; } if(enteredUsername.length()