●プログラム・リスト●

package jp.tuyano;


import android.content.Context;
import android.graphics.*;
import android.util.AttributeSet;
import android.view.View;


class MySimpleView extends View {
	private String message = "sample message.";
	private float messageSize = 10f;
	private int drawColor = Color.RED;
	private int messageColor = Color.BLUE;
	private int width = 300;
	private int height = 200;


	public String getMessage() {
		return message;
	}
	public void setMessage(String message) {
		this.message = message;
	}
	public float getMessageSize() {
		return messageSize;
	}
	public void setMessageSize(float messageSize) {
		this.messageSize = messageSize;
	}
	public int getDrawColor() {
		return drawColor;
	}
	public void setDrawColor(int drawColor) {
		this.drawColor = drawColor;
	}
	public int getMessageColor() {
		return messageColor;
	}
	public void setMessageColor(int messageColor) {
		this.messageColor = messageColor;
	}
	public int getW() {
		return width;
	}
	public void setW(int width) {
		this.width = width;
	}
	public int getH() {
		return height;
	}
	public void setH(int height) {
		this.height = height;
	}
	
	public MySimpleView(Context context) {
		super(context);
	}
	public MySimpleView(Context context, 
				AttributeSet attr) {
		super(context, attr);
		String message = attr.getAttributeValue(null,
				"message");
		this.message = message != null ? message : 
				this.message;
		this.messageSize = attr.getAttributeIntValue
				(null, "messageSize", 10);
		this.drawColor = attr.getAttributeIntValue(null, 
				"drawColor", Color.RED);
		this.messageColor = attr.getAttributeIntValue
				(null, "messageColor", Color.BLUE);
	}
	
	@Override
	public void onDraw(Canvas c) {
		c.drawColor(Color.WHITE);
		Paint fill_paint = new Paint();
		fill_paint.setStyle(Paint.Style.FILL);
		fill_paint.setColor(this.drawColor);
		c.drawOval(new RectF(0f, 0f, this.width, 
				this.height), 
				fill_paint);
		fill_paint.setColor(this.messageColor);
		fill_paint.setTextSize(this.messageSize);
		c.drawText(this.message, 5f, 
				this.messageSize + 5, fill_paint);
	}
	
	@Override
	protected void onMeasure(int widthMeasureSpec, 
			int heightMeasureSpec) {
		setMeasuredDimension(width, height);
	}
}