過年怎麼可以不玩紅包娛樂一下呢，微信裡的搖骰子大小和石頭剪刀布就是不錯的遊戲方式。

使用Java的Random函式很容易實現，以骰子為例：

1.骰子搖動的動畫，使用animation-list幀動畫實現

2.生成1~6的隨機數，1 + new Random().nextInt(6)

以下是程式碼實現，文末提供圖片資源下載：

package com.zms.dicedemo;

import java.util.Random;

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private ImageView imageDice;
	private Button btnGo;

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

		initialLayout();
	}

	private void initialLayout() {
		imageDice = (ImageView) findViewById(R.id.imageDice);

		btnGo = (Button) findViewById(R.id.btnGo);
		btnGo.setOnClickListener(new MyOnClickListener());

	}

	class MyOnClickListener implements View.OnClickListener {

		@Override
		public void onClick(View v) {
			switch (v.getId()) {
			case R.id.btnGo:
				imageDice.setImageDrawable(getResources().getDrawable(
						R.drawable.anim_dice));
				new Thread(new DiceThread()).start();
				break;

			default:
				break;
			}

		}
	}

	public class DiceThread implements Runnable {

		@Override
		public void run() {
			try {
				Thread.sleep(2000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}

			Message messageDice = new Message();
			messageDice.what = 1;
			diceHandler.sendMessage(messageDice);

		}

	}

	private void resetDiceImage() {
		int randomInt = 1 + new Random().nextInt(6); // 1~6
		Toast.makeText(MainActivity.this, getChineseByNumber(randomInt),
				Toast.LENGTH_SHORT).show();
		imageDice.setImageDrawable(getResources().getDrawable(
				getResources().getIdentifier("dice_" + randomInt, "drawable",
						getPackageName())));
	}

	private String getChineseByNumber(int number) {
		switch (number) {
		case 1:
			return "一點小";

		case 2:
			return "二點小";

		case 3:
			return "三點小";

		case 4:
			return "四點大";

		case 5:
			return "五點大";

		case 6:
			return "六點大";

		default:
			return "";
		}
	}

	final Handler diceHandler = new Handler() {

		public void handleMessage(android.os.Message msg) {
			switch (msg.what) {
			case 1:
				resetDiceImage();
				break;

			default:
				break;
			}
		}

	};
}
 

實現方式比較簡單，以下是工程下載連結：

點選下載