terisactivity.java

android 下的一个小游戏

package bianp.teris;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Window;

class RefreshHandler extends Handler {
	private static final long DELAY_MILLIS = 100;
	private TerisView _view;
	private boolean _paused = false;
	private int _falldownflag = 0;

	public RefreshHandler(TerisView view) {
		_view = view;
	}

	@Override
	public void handleMessage(Message msg) {
		_view.processkey();

		_falldownflag = (_falldownflag + 1) % 4;
		if (_falldownflag == 0)
			_view.falldown();

		_view.invalidate();
		sleep(DELAY_MILLIS);
	}

	public void sleep(long delayMillis) {
		if (_paused)
			return;
		removeMessages(0);
		sendMessageDelayed(obtainMessage(0), delayMillis);
	}

	public void pause() {
		_paused = true;
	}

	public void resume() {
		_paused = false;
	}
}

public class TerisActivity extends Activity {
	private RefreshHandler _refresh;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);

		setContentView(R.layout.main);

		// 调用事件队列
		_refresh = new RefreshHandler((TerisView) findViewById(R.id.teris));
		_refresh.sleep(100);
	}

	@Override
	public void onPause() {
		_refresh.pause();
		Log.d("bianp", "paused");
		super.onPause();
	}

	@Override
	public void onResume() {
		if (_refresh != null) {
			_refresh.resume();
			Log.d("bianp", "resumed");
		}
		super.onResume();
	}
}