MAD Lab Programs 6- 10: WIDGETS – AUTO COMPLETE TEXT VIEW, RADIO BUTTON, INTENT - SEND MESSAGE, FRAGMENTS

LAB 6: AUTO COMPLETE TEXT VIEW

 Aim: Design an app to list out the books available in the library using AutoCompleteTextView

Code:

MainActivity.java

package com.example.admin.autotextview_example;

import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class MainActivity extends AppCompatActivity {
AutoCompleteTextView m;
String [] fruits = {"apple", "aa", "a","abc"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        m = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
        ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.select_dialog_item,fruits);
        m.setThreshold(1);
        m.setAdapter(adapter);
        m.setTextColor(Color.BLUE);

    }
}

 activity_main.xml

<?xml version =  "1.0" encoding =  "utf-8"?>
<RelativeLayout
    android:id =  "@+id/activity_main"
    xmlns:android =  "http://schemas.android.com/apk/res/android"
    xmlns:tools =  "http://schemas.android.com/tools"
    android:layout_width =  "match_parent"
    android:layout_height =  "match_parent"
    android:paddingLeft =  "16dp"
    android:paddingRight =  "16dp"
    android:paddingTop =  "16dp"
    android:paddingBottom =  "16dp"
    tools:context =  ".MainActivity">

    <AutoCompleteTextView
        android:id =  "@+id/autoCompleteTextView"
        android:layout_width =  "match_parent"
        android:layout_height =  "wrap_content"
        android:layout_alignParentTop =  "true"
        android:layout_centerHorizontal =  "true"
        android:layout_marginTop =  "157dp" />
</RelativeLayout>

Result: 



Lab 7: WIDGETS – RADIO BUTTON

Aim: Create an app for students to choose their preferred branches using radio button 

 Code:

MainActivity.java

package com.example.admin.radio_button;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
RadioGroup rg;
RadioButton rb;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        rg  =  (RadioGroup) findViewById(R.id.rdg);
        }
        public void rbclick(View v)

        {
          int radiobuttonid  =  rg.getCheckedRadioButtonId();
          rb = (RadioButton) findViewById(radiobuttonid);
            Toast.makeText(getBaseContext(),rb.getText(),Toast.LENGTH_LONG).show();
        }
}

 

activity_main.xml

<?xml version = "1.0" encoding = "utf-8"?>
<RelativeLayout
    android:id = "@+id/activity_main"
    xmlns:android = "http://schemas.android.com/apk/res/android"
    xmlns:tools = "http://schemas.android.com/tools"
    android:layout_width = "match_parent"
    android:layout_height = "match_parent"
    android:paddingLeft = "16dp"
    android:paddingRight = "16dp"
    android:paddingTop = "16dp"
    android:paddingBottom = "16dp"
    tools:context = ".MainActivity">

    <RadioGroup
        android:id = "@+id/rdg"
        android:layout_width = "match_parent"
        android:layout_height = "300dp"
        android:layout_alignParentStart = "true"
        android:layout_alignParentTop = "true"
        android:layout_marginStart = "116dp"
        android:layout_marginTop = "51dp">

        <RadioButton
            android:id = "@+id/rbt1"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:layout_weight = "1"
            android:text = "CSE"
            android:onClick = "rbclick"
            />

        <RadioButton
            android:id = "@+id/rbt2"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:layout_weight = "1"
            android:text = "EEE"
            android:onClick = "rbclick"
            />

        <RadioButton
            android:id = "@+id/rbt3"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:layout_weight = "1"
            android:text = "ECE"
            android:onClick = "rbclick"
            />
    </RadioGroup>

</RelativeLayout>

 

MAD Lab 8: INTENT

Aim: Design an app with two activities using Intent

Code:

MainActivity.java


Activity 1

package com.example.admin.intent;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.view.View;


public class Activity1 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_1);
    }

public void gonextapp(View view)
{
    Intent i = new Intent(this,Activity2.class);
    startActivity(i);
}

}

Activity 2

package com.example.admin.intent;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.view.View;

public class Activity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_2);
    }

    public void gonextapp(View view)
    {
        Intent i = new Intent(this,Activity1.class);
        startActivity(i);
    }

}

activity_main.xml

Result:

Example 2

package com.example.admin.intent2;



import android.app.Activity;

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;

import android.widget.EditText;

import android.widget.TextView;



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.button);

        

        final EditText r = (EditText) findViewById(R.id.editText);

        b.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                String url=r.getText().toString();

                Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse(url));

                startActivity(intent);

            }

        });

    }

}

Result:

LAB 9: 


Aim: Design an app which send message from one activity to another activity

Code:

MainActivity.java

package com.example.admin.intent3;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    public void sendMessage(View view)
    {
        EditText editText = findViewById(R.id.editText);
        String message = editText.getText().toString();
        Intent i = new Intent(this,Main3Activity.class);
        i.putExtra("EXTRA MSG",message);
        startActivity(i);
    }
}

 

Main3Activity.java

 

package com.example.admin.intent3;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class Main3Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main3);
        Intent intent = getIntent();
        String message = intent.getStringExtra("EXTRA MSG");
        TextView tv = findViewById(R.id.textView2);
        tv.setText(message);

    }
}

activity_main.xml



activity_main.xml

<?xml version = "1.0" encoding = "utf-8"?>
<RelativeLayout
    android:id = "@+id/activity_main"
    xmlns:android = "http://schemas.android.com/apk/res/android"
    xmlns:tools = "http://schemas.android.com/tools"
    android:layout_width = "match_parent"
    android:layout_height = "match_parent"
    android:paddingLeft = "16dp"
    android:paddingRight = "16dp"
    android:paddingTop = "16dp"
    android:paddingBottom = "16dp"
    tools:context = ".MainActivity">

    <EditText
        android:id = "@+id/editText"
        android:layout_width = "wrap_content"
        android:layout_height = "wrap_content"
        android:layout_below = "@+id/textView"
        android:layout_centerHorizontal = "true"
        android:layout_marginTop = "52dp"
        android:ems = "10"
        android:inputType = "textPersonName"
        android:text = " "
        tools:ignore = "UnknownId" />

    <Button
        android:id = "@+id/button"
        android:layout_width = "wrap_content"
        android:layout_height = "wrap_content"
        android:layout_below = "@+id/editText"
        android:layout_centerHorizontal = "true"
        android:layout_marginTop = "98dp"
        android:onClick = "sendMessage"
        android:text = "Button" />

</RelativeLayout>

 

activity_main3.xml

<?xml version = "1.0" encoding = "utf-8"?>
<RelativeLayout
    android:id = "@+id/activity_main"
    xmlns:android = "http://schemas.android.com/apk/res/android"
    xmlns:tools = "http://schemas.android.com/tools"
    android:layout_width = "match_parent"
    android:layout_height = "match_parent"
    android:paddingLeft = "16dp"
    android:paddingRight = "16dp"
    android:paddingTop = "16dp"
    android:paddingBottom = "16dp"
    tools:context = ".MainActivity">

    <TextView
        android:id = "@+id/textView2"
        android:layout_width = "wrap_content"
        android:layout_height = "wrap_content"
        android:layout_alignParentTop = "true"
        android:layout_centerHorizontal = "true"
        android:layout_marginTop = "85dp"
        android:text = "TextView" />
</RelativeLayout>

Result:



Lab 10: FRAGMENTS

Aim: Write an Android application program that demonstrates Fragments in mobile applications development.

Code:

MainActivity.java

package com.example.admin.f1;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
//import android.app.Fragment;
//import android.app.FragmentManager;
//import android.app.FragmentTransaction;
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 changeFragment(View view)
{
    Fragment fragment;
    if(view == findViewById(R.id.button))
    {
        fragment = new FragmentOne();
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(R.id.fragment_place,fragment);
        ft.commit();
    }

    if(view == findViewById(R.id.button2))
    {
        fragment = new FragmentTwo();
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(R.id.fragment_place,fragment);
        ft.commit();
    }

}



}

activity_main.xml

<?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">

    <Button
        android:id = "@+id/button"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:onClick = "changeFragment"
        android:text = "Fragment 1" />

    <Button
        android:id = "@+id/button2"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:onClick = "changeFragment"
        android:text = "Fragment 2" />

    <fragment
        android:name = "com.example.admin.f1.FragmentOne"
        android:id = "@+id/fragment_place"
        android:layout_width = "match_parent"
        android:layout_height = "match_parent"
    ></fragment>
</LinearLayout>

Result:

         


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