June 2017 ~ ANDROID TUTORIAL CODE

Monday 26 June 2017

online registration with php android

June 26, 2017 No comments

1) main page xml code

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context="com.example.viraj.demodatabase.MainActivity">

<Button
android:id="@+id/id_register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="123dp"
android:onClick="register"
android:text="REGISTER"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<Button
android:id="@+id/id_login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="141dp"
android:text="LOGIN"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/id_register" />
</android.support.constraint.ConstraintLayout>

main java page

package com.example.viraj.demodatabase;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void register(View view)

{

Intent intent=new Intent(MainActivity.this,Register.class);

startActivity(intent);

}

android mainfeast page

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.viraj.demodatabase">

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

second page xml file

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout 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"

tools:context="com.example.viraj.demodatabase.Register">

<EditText

android:id="@+id/id_name"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginRight="8dp"

android:layout_marginTop="88dp"

android:ems="10"

android:hint="NAME"

android:inputType="textPersonName"

app:layout_constraintHorizontal_bias="0.503"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toTopOf="parent" />

<EditText

android:id="@+id/id_password"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginRight="8dp"

android:layout_marginTop="24dp"

android:ems="10"

android:hint="PASWORD"

android:inputType="textPersonName"

app:layout_constraintHorizontal_bias="0.0"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toBottomOf="@+id/id_name" />

<EditText

android:id="@+id/id_contact"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginRight="8dp"

android:layout_marginTop="24dp"

android:ems="10"

android:inputType="textPersonName"

android:hint="CONTACT"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toBottomOf="@+id/id_password"

app:layout_constraintHorizontal_bias="0.0" />

<EditText

android:id="@+id/id_country"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginRight="8dp"

android:layout_marginTop="24dp"

android:ems="10"

android:inputType="textPersonName"

android:hint="COUNTRY"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toBottomOf="@+id/id_contact"

app:layout_constraintHorizontal_bias="0.0" />

<Button

android:id="@+id/id_button"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginRight="8dp"

android:layout_marginTop="32dp"

android:onClick="reguser"

android:text="Button"

app:layout_constraintHorizontal_bias="0.0"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toBottomOf="@+id/id_country" />

</android.support.constraint.ConstraintLayout>

second java page

package com.example.viraj.demodatabase;

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 Register extends AppCompatActivity {

EditText e_name, e_password, e_contact, e_country;

Button e_button;

String name, password, country, contact;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_register);

e_name = (EditText) findViewById(R.id.id_name);

e_password = (EditText) findViewById(R.id.id_password);

e_contact = (EditText) findViewById(R.id.id_contact);

e_country = (EditText) findViewById(R.id.id_country);

// e_button = (Button) findViewById(R.id.id_button);

}

//mainfeast me internet use ki permission bhi de

public void reguser(View view) {

name = e_name.getText().toString();

password = e_password.getText().toString();

contact = e_contact.getText().toString();

country = e_country.getText().toString();

//to cALL BACKGROUNDTASK FORM METHOD WE CREATE THIS 1)

// Toast.makeText(getApplicationContext(),name,Toast.LENGTH_LONG).show();

String method ="Register";

//object of background task

Backgroundtask backgroundtask=new Backgroundtask(this);

backgroundtask.execute(method,name,password,contact,country);

finish();

}

third sirf java class banana he

package com.example.viraj.demodatabase;

import android.content.Context;

import android.os.AsyncTask;

import android.widget.Toast;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLEncoder;

/**

* Created by viraj on 26-Jun-17.

public class Backgroundtask extends AsyncTask<String, Void, String> {

//constructor created

Context ctx;

Backgroundtask(Context ctx) {

this.ctx = ctx;

}

@Override

//sab jagha string kara he void se change karke

protected String doInBackground(String... params) {

//http://localhost/udemy/register.php http://10.0.2.2/udemy/register.php

String reg_url = " http://192.168.12.3//udemy/register.php";

//EXTRACT KAR RAHE HE METHOD SE

String method = params[0];//this param 0 is for method

if (method.equals("Register")) {

String name = params[1];

String password = params[2];

String contact = params[3];

String country = params[4];

try {

//create object of url

URL url = new URL(reg_url);

//OBJECT OF HTTP URL CONN

HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();

httpURLConnection.setRequestMethod("POST");

httpURLConnection.setDoOutput(true);

OutputStream os = httpURLConnection.getOutputStream();

BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

String data = URLEncoder.encode("name", "UTF-8") + "=" + URLEncoder.encode(name, "UTF-8") + "&" +

URLEncoder.encode("password", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8") + "&" +

URLEncoder.encode("contact", "UTF-8") + "=" + URLEncoder.encode(contact, "UTF-8") + "&" +

URLEncoder.encode("country", "UTF-8") + "=" + URLEncoder.encode(country, "UTF-8");

bufferedWriter.write(data);

bufferedWriter.flush();

bufferedWriter.close();

os.close();

InputStream IS = httpURLConnection.getInputStream();

IS.close();

return "REGISTRATION SUCESS";

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPreExecute() {

super.onPreExecute();

}

@Override

//sab jagha string kara he void se change karke

protected void onPostExecute(String result1) {

Toast.makeText(ctx, result1, Toast.LENGTH_LONG).show();

}

@Override

protected void onProgressUpdate(Void... values) {

super.onProgressUpdate(values);

}

database connection query part 1

June 25, 2017 ANDROID TUTORIAL CODE No comments

<?php

$username="root";
$password="";
$host="localhost";
$database="project";
$conn=mysqli_connect($host,$username,$password,$database);
if(!$conn)
{
echo "CONNECTION FAIL";
}
else
{
echo "CONNECT SUCESSFULLY";
}

?>

Intent Implicit and explicit

June 19, 2017 ANDROID TUTORIAL CODE No comments

Intent can be bascially used to communicate between 2 activities inside the same app or to communicate between two activities in different app.

There are two types of intent
1. Explicit Intent
2. Implicit Intent

Implicit Intent - In implicit intent communication takes place between 2 activities of different application .

Implicit intent is basically used for starting services like
Like phonecall, sms, maps, etc

Explicit Intent - In explicit Intent the communication takes place between 2 activities inside the same application .

implicit intant

activity to website

Explicit Intent

one activity to another activity of same app

IMPLICIT INTENT JAVA FILE

package com.example.viraj.blog_17_implicitintent;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b=(Button)findViewById(R.id.id_button);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

Intent intent=new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("http://android-tutorialss.blogspot.com/"));
startActivity(intent);

}
});
}
}

EXPLICIT INTENT

Intent intent= new Intent(getApplicationContext(), secondactivity.class);

startActivity(intent);

Activity lifecycle

June 19, 2017 ANDROID TUTORIAL CODE No comments

JAVA FILE

package com.example.viraj.blog_16_activitylifecycle;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

public MainActivity() {

}

@Override

protected void onStart() {

super.onStart();

Toast.makeText(getApplicationContext(),"onStart",Toast.LENGTH_LONG).show();

}

@Override

protected void onStop() {

super.onStop();

Toast.makeText(getApplicationContext(),"onStop",Toast.LENGTH_LONG).show();

}

@Override

protected void onDestroy() {

super.onDestroy();

Toast.makeText(getApplicationContext(),"onDestroy",Toast.LENGTH_LONG).show();

}

@Override

protected void onPause() {

super.onPause();

Toast.makeText(getApplicationContext(),"onPause",Toast.LENGTH_LONG).show();

}

@Override

protected void onResume() {

super.onResume();

Toast.makeText(getApplicationContext(),"onResume",Toast.LENGTH_LONG).show();

}

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

RATING BAR ANDROID STUDIO

June 18, 2017 ANDROID TUTORIAL CODE No comments

JAVA FILE
package com.example.viraj.blog_13_ratingbar;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RatingBar;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
private RatingBar rb1;
private Button b1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rb1=(RatingBar)findViewById(R.id.id_ratingBar);
b1=(Button)findViewById(R.id.id_check);

rb1.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
Toast.makeText(getApplicationContext(),"STAR IS : "+ rating,Toast.LENGTH_LONG).show();
}
});
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"STAR IS : "+ rb1.getRating(),Toast.LENGTH_LONG).show();
}
});

}
}

XML FILE

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context="com.example.viraj.blog_13_ratingbar.MainActivity">

<RatingBar
android:id="@+id/id_ratingBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="64dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
app:layout_constraintVertical_bias="0.052"
android:numStars="5"
android:rating="2.0"
android:stepSize="1"
/>

<Button
android:id="@+id/id_check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="144dp"
android:text="CHECK"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/ratingBar"
app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>

Listview

June 18, 2017 ANDROID TUTORIAL CODE No comments

JAVA FILE

package com.example.viraj.blog_12_listiew_javastringarraypage;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

ListView lv1;

final String [] name_1=new String[]{

"viraj","nilesh","abdesh","gaurov","rajpandey","sumit","nikhil","milind","dlgoyal"

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

lv1=(ListView)findViewById(R.id.id_listview);

ArrayAdapter <String> adapter_123=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,android.R.id.text1,name_1);

//assign the adapter to listview

lv1.setAdapter(adapter_123);

lv1.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

int int_12_position=position;

String clickview_name=lv1.getItemAtPosition(int_12_position).toString();

Toast.makeText(getApplicationContext(),clickview_name,Toast.LENGTH_LONG).show();

}

});

}

XML FILE

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout 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"

tools:context="com.example.viraj.blog_12_listiew_javastringarraypage.MainActivity">

<ListView

android:id="@+id/id_listview"

android:layout_width="368dp"

android:layout_height="495dp"

tools:layout_editor_absoluteX="8dp"

tools:layout_editor_absoluteY="8dp" />

</android.support.constraint.ConstraintLayout>

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

nice explanation
WEBSITE https://androidexample.com/Create_A_Simple_Listview_-_Android_Example/index.php?view=article_discription&aid=65

In this android example creating a simple listview to display a array values.

activity_list_view_android_example.xml File

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<ListView

android:id="@+id/list"

android:layout_height="wrap_content"

android:layout_width="match_parent">

</ListView>

</LinearLayout>

Explanation :

Define ListView in xml file

<ListView

android:id="@+id/list"

android:layout_height="wrap_content"

android:layout_width="match_parent">

</ListView>

=========================================================================================

ListViewAndroidExample.java File

public class ListViewAndroidExample extends Activity {

ListView listView ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_list_view_android_example);

// Get ListView object from xml

listView = (ListView) findViewById(R.id.list);

// Defined Array values to show in ListView

String[] values = new String[] { "Android List View",

"Adapter implementation",

"Simple List View In Android",

"Create List View Android",

"Android Example",

"List View Source Code",

"List View Array Adapter",

"Android Example List View"

};

// Define a new Adapter

// First parameter - Context

// Second parameter - Layout for the row

// Third parameter - ID of the TextView to which the data is written

// Forth - the Array of data

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

android.R.layout.simple_list_item_1, android.R.id.text1, values);

// Assign adapter to ListView

listView.setAdapter(adapter);

// ListView Item Click Listener

listView.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

// ListView Clicked item index

int itemPosition = position;

// ListView Clicked item value

String itemValue = (String) listView.getItemAtPosition(position);

// Show Alert

Toast.makeText(getApplicationContext(),

"Position :"+itemPosition+" ListItem : " +itemValue , Toast.LENGTH_LONG)

.show();

}

});

}

Explanation:

Adapters are used to provide the data to the ListView

Parameters:

simple_list_item_1 : Android internal layout view

android.R.id.text1 : In Android internal layout view already defined text fields to show data

values : User defined data array.

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

android.R.layout.simple_list_item_1, android.R.id.text1, values);

// Assign adapter to ListView

listView.setAdapter(adapter);

When Click on list item then onItemClick method in ListView Item Click Listener called

listView.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

// ListView Clicked item index

int itemPosition = position;

// ListView Clicked item value

String itemValue = (String) listView.getItemAtPosition(position);

// Show Alert

Toast.makeText(getApplicationContext(),

"Position :"+itemPosition+" ListItem : " +itemValue , Toast.LENGTH_LONG)

.show();

}

});

ANDROID TUTORIAL CODE

Monday 26 June 2017

online registration with php android

Sunday 25 June 2017

database connection query part 1

Monday 19 June 2017

Intent Implicit and explicit

Activity lifecycle

Sunday 18 June 2017

RATING BAR ANDROID STUDIO

Listview

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