发射小火箭

主页面

package com.example.firework;

import com.example.firework.service.fireService;

import android.app.Activity;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;

public class MainActivity extends Activity {

	private Button bt_add;
	private Button bt_remove;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		bt_add = (Button) findViewById(R.id.bt_add);
		bt_remove = (Button) findViewById(R.id.bt_remove);
		bt_add.setOnClickListener(new OnClickListener() {

			/* (non-Javadoc)
			 * 点击按钮，创建小火箭
			 * @see android.view.View.OnClickListener#onClick(android.view.View)
			 */
			@Override
			public void onClick(View v) {
				startService(new Intent(getApplicationContext(),
						fireService.class));
				finish();
			}
		});
		bt_remove.setOnClickListener(new OnClickListener() {

			/* (non-Javadoc)
			 * 点击按钮，销毁小火箭
			 * @see android.view.View.OnClickListener#onClick(android.view.View)
			 */
			@Override
			public void onClick(View v) {
				stopService(new Intent(getApplicationContext(),
						fireService.class));
			}
		});
	}

}

小火箭服务

package com.example.firework.service;

import com.example.firework.R;
import com.example.firework.ShowActivity;

import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.IBinder;
import android.telephony.TelephonyManager;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.ImageView;

public class fireService extends Service {
	private LayoutParams mParams = new WindowManager.LayoutParams();
	private WindowManager mWM;
	private TelephonyManager tm;
	private int width;
	private int height;
	private View fire;

	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void onCreate() {
		tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
		mWM = (WindowManager) getSystemService(WINDOW_SERVICE);

		//得到屏幕宽高
		width = mWM.getDefaultDisplay().getWidth();
		height = mWM.getDefaultDisplay().getHeight();
		//展示小火箭
		Show();
		super.onCreate();
	}

	private void Show() {
		//设置显示参数
		final WindowManager.LayoutParams params = mParams;
		params.height = WindowManager.LayoutParams.WRAP_CONTENT;
		params.width = WindowManager.LayoutParams.WRAP_CONTENT;
		params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
				| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
		params.format = PixelFormat.TRANSLUCENT;
		params.type = WindowManager.LayoutParams.TYPE_PHONE;
		params.setTitle("Toast");
		params.gravity = Gravity.TOP + Gravity.LEFT;

		// 得到显示的土司控件
		fire = View.inflate(getApplicationContext(), R.layout.fire, null);
		ImageView iv_fire = (ImageView) fire.findViewById(R.id.iv_fire);
		AnimationDrawable background = (AnimationDrawable) iv_fire
				.getBackground();
		background.start();
		// 设置触摸事件，用于拖拽功能
		fire.setOnTouchListener(new OnTouchListener() {
			private float startX;
			private float startY;
			//接受消息，更新火箭UI
			private Handler mHandler = new Handler() {
				public void handleMessage(android.os.Message msg) {
					mWM.updateViewLayout(fire, params);
				};
			};

			public boolean onTouch(View v, MotionEvent event) {
				switch (event.getAction()) {
				case MotionEvent.ACTION_DOWN:
					// 记录起始位置
					startX = event.getRawX();
					startY = event.getRawY();
					break;
				case MotionEvent.ACTION_MOVE:
					float moveX = event.getRawX();
					float moveY = event.getRawY();

					float changeX = moveX - startX;
					float changeY = moveY - startY;

					params.x = (int) (params.x + changeX);
					params.y = (int) (params.y + changeY);
					// 容错处理
					if (params.x < 0) {
						params.x = 0;
					}
					// 容错处理
					if (params.y < 0) {
						params.y = 0;
					}
					// 容错处理
					if (params.x > width - fire.getWidth()) {
						params.x = width - fire.getWidth();
					}
					// 容错处理
					if (params.y > height - fire.getHeight()) {
						params.y = height - fire.getHeight();
					}
					// 窗口更新显示土司位置
					mWM.updateViewLayout(fire, params);

					startX = moveX;
					startY = moveY;

					break;
				case MotionEvent.ACTION_UP:
					//抬起发射
					float move2X = event.getRawX();
					float move2Y = event.getRawY();
					if (move2X > width * 0.3 && move2X < width * 0.7
							&& move2Y > height * 0.7) {
						//打开烟雾页面
						Intent intent = new Intent(getApplicationContext(),
								ShowActivity.class);
						//设置栈
						intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
						startActivity(intent);
						//位移火箭
						moveFire(move2X, move2Y);
						return true;
					}
					break;

				}
				return true;
			}

			/**
			 * 移动小火箭
			 * 
			 * @param moveY
			 * @param moveX
			 */
			private void moveFire(final float moveX, final float moveY) {
				new Thread(new Runnable() {

					@Override
					public void run() {
						int startY = (int) moveY;
						for (int i = startY; i > 20; i -= 50) {
							params.x = width/2-fire.getWidth()/2;
							params.y = i;
							mHandler.sendEmptyMessage(0);
							try {
								new Thread().sleep(10);
							} catch (InterruptedException e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
						}

					}
				}).start();
			}
		});
		mWM.addView(fire, params);
	}

	@Override
	public void onDestroy() {
		mWM.removeView(fire);
		super.onDestroy();
	}

}

烟雾页面

package com.example.firework;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.widget.ImageView;

public class ShowActivity extends Activity {
	private ImageView iv_bottom;
	private ImageView iv_way;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_show);
		initUI();
		initAnim();
	}

	private void initAnim() {
		//设置烟雾动画
		AlphaAnimation aa = new AlphaAnimation(1.0f, 0.0f);
		aa.setDuration(1000);
		aa.setRepeatCount(1);
		aa.setRepeatMode(Animation.REVERSE);
		iv_bottom.startAnimation(aa);
		iv_way.startAnimation(aa);
		new Thread(new Runnable() {

			@Override
			public void run() {
				//定时关闭此页面
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				finish();
			}
		}).start();

	}

	/**
	 * 初始化控件
	 */
	private void initUI() {
		iv_bottom = (ImageView) findViewById(R.id.iv_bottom);
		iv_way = (ImageView) findViewById(R.id.iv_way);
	}
}