Program Stuff

Pada program ini kita akan rancang sebuah program android yang sudah mengkombinasikan widget yang biada digunakan. Buatlah project android dengan ketentuan seperti berikut:

Project Name    : FormStuff

Build Target       : Android 4.2.2

Aplication name : formstuff

Package name  : com.immobulus.formstuff

Activity               : formstuff

Min SDK            : 9

Desain layout seperti gambar berikut:

Jadikan coding xml adalah seperti berikut:

main.xml

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

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

 <Button

        android:id="@+id/button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:padding="10dp"

        android:background="@drawable/android_button" />

<EditText

        android:id="@+id/edittext"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"/>

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

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

 <Button

        android:id="@+id/button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:padding="10dp"

        android:background="@drawable/android_button" />

<EditText

        android:id="@+id/edittext"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"/>

<CheckBox android:id="@+id/checkbox"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="check it out" />

       

 <RadioGroup

      android:layout_width="fill_parent"

      android:layout_height="wrap_content"

      android:orientation="vertical">

      <RadioButton android:id="@+id/radio_red"

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:text="Red" />

      <RadioButton android:id="@+id/radio_blue"

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:text="Blue" />

         

    </RadioGroup>

 <ToggleButton android:id="@+id/togglebutton"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textOn="Vibrate on"

        android:textOff="Vibrate off"/>

       

       

        <RatingBar android:id="@+id/ratingbar"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:numStars="5"

        android:stepSize="1.0"/>

       

</LinearLayout>

formstuff.java

package com.immobulus.formstuff;

import android.app.Activity;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.View.OnKeyListener;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.RatingBar;

import android.widget.Toast;

import android.widget.ToggleButton;

import android.widget.RatingBar.OnRatingBarChangeListener;

public class formstuff extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

       

        final RadioButton radio_red = (RadioButton) findViewById(R.id.radio_red);

        final RadioButton radio_blue = (RadioButton) findViewById(R.id.radio_blue);

        radio_red.setOnClickListener(radio_listener);

        radio_blue.setOnClickListener(radio_listener);

       

       

        final Button button = (Button) findViewById(R.id.button);

        button.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                // Perform action on clicks

                Toast.makeText(formstuff.this, "Beep Bop", Toast.LENGTH_SHORT).show();

            }

        });

       

        final EditText edittext = (EditText) findViewById(R.id.edittext);

        edittext.setOnKeyListener(new OnKeyListener() {

            public boolean onKey(View v, int keyCode, KeyEvent event) {

                // If the event is a key-down event on the "enter" button

                if ((event.getAction() == KeyEvent.ACTION_DOWN) &&

                    (keyCode == KeyEvent.KEYCODE_ENTER)) {

                  // Perform action on key press

                  Toast.makeText(formstuff.this, edittext.getText(), Toast.LENGTH_SHORT).show();

                  return true;

                }

                return false;

            }

        });

       

        final CheckBox checkbox = (CheckBox) findViewById(R.id.checkbox);

        checkbox.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                // Perform action on clicks, depending on whether it's now checked

                if (((CheckBox) v).isChecked()) {

                    Toast.makeText(formstuff.this, "Selected", Toast.LENGTH_SHORT).show();

                } else {

                    Toast.makeText(formstuff.this, "Not selected", Toast.LENGTH_SHORT).show();

                }

            }

        });

        final ToggleButton togglebutton = (ToggleButton) findViewById(R.id.togglebutton);

        togglebutton.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                // Perform action on clicks

                if (togglebutton.isChecked()) {

                    Toast.makeText(formstuff.this, "Checked", Toast.LENGTH_SHORT).show();

                } else {

                    Toast.makeText(formstuff.this, "Not checked", Toast.LENGTH_SHORT).show();

                }

            }

        });

       

       

        final RatingBar ratingbar = (RatingBar) findViewById(R.id.ratingbar);

        ratingbar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {

            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {

                Toast.makeText(formstuff.this, "New Rating: " + rating, Toast.LENGTH_SHORT).show();

            }

        });

        

                       

    }

    private OnClickListener radio_listener = new OnClickListener() {

        public void onClick(View v) {

            // Perform action on clicks

            RadioButton rb = (RadioButton) v;

            Toast.makeText(formstuff.this, rb.getText(), Toast.LENGTH_SHORT).show();

        }

    };

   

}

Jalankan aplikasi, dan setiap Anda melakukan action terhadap widget akan dimunculkan pesan dalam bentuk widget.toast yang berisi action adalah seperti contoh gambar berikut pesan toast ketika checklist click.

Sumber: PEMROGRAMAN APLIKASI MOBILE SMARTPHONE DAN TABLET PC BERBASIS ANDROID. oleh : Nazruddin Safaat H