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2012年4月20日金曜日

Hello, Views (Form Stuff編)

Form Stuff | Android Developers
http://developer.android.com/intl/ja/resources/tutorials/views/hello-formstuff.html フォーム要素のチュートリアルです。
HelloFormStuffというプロジェクトを作成します。
res/layout/main.xmlを開き、以下のように変更します。
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
</LinearLayout>
カスタムボタンを配置します。
チュートリアルページの3つの画像をローカルに保存し、res/drawable/ ディレクトリに保存します。
res/drawable/に android_button.xml を作成し、以下のように変更します。
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<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/android_pressed"
          android:state_pressed="true" />
    <item android:drawable="@drawable/android_focused"
          android:state_focused="true" />
    <item android:drawable="@drawable/android_normal" />
</selector>
res/layout/main.xmlを開き、以下のように変更します。
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:background="@drawable/android_button" />
 
</LinearLayout>
HelloFormStuffActivity.javaを開き、以下のように変更します。
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package jp.blogspot.logroid.helloFormStuff;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.this, "Beep Bop", Toast.LENGTH_SHORT).show();
            }
        });
    }
}
実行します。 



res/layout/main.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <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="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />
 
</LinearLayout>


HelloFormStuffActivity.javaを開き、以下のように変更します。


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package jp.blogspot.logroid.helloFormStuff;
 
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.EditText;
import android.widget.Toast;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.this, edittext.getText(), Toast.LENGTH_SHORT).show();
                  return true;
                }
                return false;
            }
        });
    }
}

実行します。




res/layout/main.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <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="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />
     
    <CheckBox android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkbox_label" />
 
</LinearLayout>


res/values/strings.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="hello">Hello World, HelloFormStuffActivity!</string>
    <string name="app_name">HelloFormStuff</string>
    <string name="checkbox_label">check it out</string>
 
</resources>


HelloFormStuffActivity.javaを開き、以下のように変更します。


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package jp.blogspot.logroid.helloFormStuff;
 
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.Toast;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.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(HelloFormStuffActivity.this, "Selected", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.this, "Not selected", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }
}


実行します。




res/layout/main.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <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="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />
     
    <CheckBox android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkbox_label" />
 
    <RadioGroup
        android:layout_width="match_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="@string/red" />
        <RadioButton android:id="@+id/radio_blue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/blue" />
    </RadioGroup>
 
</LinearLayout>


res/values/strings.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="hello">Hello World, HelloFormStuffActivity!</string>
    <string name="app_name">HelloFormStuff</string>
    <string name="checkbox_label">check it out</string>
    <string name="red">Red</string>
    <string name="blue">Blue</string>
 
</resources>


HelloFormStuffActivity.javaを開き、以下のように変更します。


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package jp.blogspot.logroid.helloFormStuff;
 
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.Toast;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.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(HelloFormStuffActivity.this, "Selected", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.this, "Not selected", Toast.LENGTH_SHORT).show();
                }
            }
        });
         
        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);
    }
     
    private OnClickListener radio_listener = new OnClickListener() {
        public void onClick(View v) {
            // Perform action on clicks
            RadioButton rb = (RadioButton) v;
            Toast.makeText(HelloFormStuffActivity.this, rb.getText(), Toast.LENGTH_SHORT).show();
        }
    };
}


実行します。




res/layout/main.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <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="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />
     
    <CheckBox android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkbox_label" />
 
    <RadioGroup
        android:layout_width="match_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="@string/red" />
        <RadioButton android:id="@+id/radio_blue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/blue" />
    </RadioGroup>
 
    <ToggleButton android:id="@+id/togglebutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textOn="@string/vibrate_on"
        android:textOff="@string/vibrate_off"/>
 
</LinearLayout>


res/values/strings.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="hello">Hello World, HelloFormStuffActivity!</string>
    <string name="app_name">HelloFormStuff</string>
    <string name="checkbox_label">check it out</string>
    <string name="red">Red</string>
    <string name="blue">Blue</string>
    <string name="vibrate_on">Vibrate on</string>
    <string name="vibrate_off">Vibrate off</string>
 
</resources>


HelloFormStuffActivity.javaを開き、以下のように変更します。


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package jp.blogspot.logroid.helloFormStuff;
 
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.Toast;
import android.widget.ToggleButton;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.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(HelloFormStuffActivity.this, "Selected", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.this, "Not selected", Toast.LENGTH_SHORT).show();
                }
            }
        });
         
        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 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(HelloFormStuffActivity.this, "Checked", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.this, "Not checked", 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(HelloFormStuffActivity.this, rb.getText(), Toast.LENGTH_SHORT).show();
        }
    };
}


実行します。




res/layout/main.xmlを開き、以下のように変更します。


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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
     
    <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="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />
     
    <CheckBox android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkbox_label" />
 
    <RadioGroup
        android:layout_width="match_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="@string/red" />
        <RadioButton android:id="@+id/radio_blue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/blue" />
    </RadioGroup>
 
    <ToggleButton android:id="@+id/togglebutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textOn="@string/vibrate_on"
        android:textOff="@string/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>


HelloFormStuffActivity.javaを開き、以下のように変更します。


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package jp.blogspot.logroid.helloFormStuff;
 
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.RatingBar.OnRatingBarChangeListener;
import android.widget.Toast;
import android.widget.ToggleButton;
 
public class HelloFormStuffActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         
        final Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // Perform action on clicks
                Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.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(HelloFormStuffActivity.this, "Selected", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.this, "Not selected", Toast.LENGTH_SHORT).show();
                }
            }
        });
         
        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 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(HelloFormStuffActivity.this, "Checked", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(HelloFormStuffActivity.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(HelloFormStuffActivity.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(HelloFormStuffActivity.this, rb.getText(), Toast.LENGTH_SHORT).show();
        }
    };
}


実行します。




今回出てきたキーワードについて解説。 


getAction


イベントタイプを取得する。


setOnKeyListener


キー入力があった際のイベントリスナ登録


setOnRatingBarChangeListener


レート変更があった際のイベントリスナ登録










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