一、小火箭框架搭建

package com.example.smallrocket;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void startRocket(View view){startService(new Intent(this, RocketService.class));}public void stopRocket(View view){stopService(new Intent(this, RocketService.class));}}

package com.example.smallrocket;import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.view.View;
import android.view.WindowManager;public class RocketService extends Service {private WindowManager.LayoutParams params;private int winWidth;private int winHeight;private WindowManager mWM;private View view;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();mWM = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);winWidth = mWM.getDefaultDisplay().getWidth();winHeight = mWM.getDefaultDisplay().getHeight();params = new WindowManager.LayoutParams();params.width = WindowManager.LayoutParams.WRAP_CONTENT;params.height = 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;//电话窗口它用于电话交互(特别是呼入)。它置于所有应用程序之上，状态栏之下。params.setTitle("Toast");view = View.inflate(this, R.layout.rocket, null);//初始化火箭布局mWM.addView(view, params);}@Overridepublic void onDestroy() {if(mWM!=null && view!=null){mWM.removeView(view);view = null;}super.onDestroy();}
}

二、小火箭完成

package com.example.smallrocket;import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;public class RocketService extends Service {private WindowManager.LayoutParams params;private int winWidth;private int winHeight;private WindowManager mWM;private View view;private int startX;private int startY;private int endX;private int endY;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();mWM = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);winWidth = mWM.getDefaultDisplay().getWidth();winHeight = mWM.getDefaultDisplay().getHeight();params = new WindowManager.LayoutParams();params.width = WindowManager.LayoutParams.WRAP_CONTENT;params.height = 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;// 电话窗口它用于电话交互(特别是呼入)。它置于所有应用程序之上，状态栏之下。params.gravity = Gravity.LEFT + Gravity.TOP;// 将重心位置设置为左上方,也就是(0,0)从左上方开始,而不是默认的重心位置params.setTitle("Toast");view = View.inflate(this, R.layout.rocket, null);// 初始化火箭布局mWM.addView(view, params);view.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:// 初始化起点坐标startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_MOVE:endX = (int) event.getRawX();endY = (int) event.getRawY();// 计算移动偏移量int dx = endX - startX;int dy = endY - startY;// 更新浮窗位置params.x += dx;params.y += dy;// 防止坐标偏离屏幕if (params.x < 0) {params.x = 0;}if (params.y < 0) {params.y = 0;}// 防止坐标偏离屏幕if (params.x > winWidth - view.getWidth()) {params.x = winWidth - view.getWidth();}if (params.y > winHeight - view.getHeight()) {params.y = winHeight - view.getHeight();}// System.out.println("x:"+params.x+",y:"+params.y);mWM.updateViewLayout(view, params);// 重新初始化起点坐标startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_UP:if (params.x > 100 && params.x < 250&& params.y > winHeight - 100) {System.out.println("发射火箭");sendRocket();}break;default:break;}return true;}});}private Handler mHandler = new Handler(){public void handleMessage(android.os.Message msg) {int y = msg.arg1;params.y = y;mWM.updateViewLayout(view, params);};};protected void sendRocket() {new Thread(){public void run() {int pos = 380;//移动总距离for (int i = 0; i <= 10; i++) {//等待一段时间再更新位置，用于控制火箭速度try {Thread.sleep(50);} catch (InterruptedException e) {e.printStackTrace();}int y = pos - 38*i;Message msg = Message.obtain();msg.arg1 = y;mHandler.sendMessage(msg);}};}.start();}@Overridepublic void onDestroy() {if (mWM != null && view != null) {mWM.removeView(view);view = null;}super.onDestroy();}
}

动态火箭：

package com.example.smallrocket;import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.graphics.drawable.AnimationDrawable;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.ImageView;public class RocketService extends Service {private WindowManager.LayoutParams params;private int winWidth;private int winHeight;private WindowManager mWM;private View view;private int startX;private int startY;private int endX;private int endY;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();mWM = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);winWidth = mWM.getDefaultDisplay().getWidth();winHeight = mWM.getDefaultDisplay().getHeight();params = new WindowManager.LayoutParams();params.width = WindowManager.LayoutParams.WRAP_CONTENT;params.height = 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;// 电话窗口它用于电话交互(特别是呼入)。它置于所有应用程序之上，状态栏之下。params.gravity = Gravity.LEFT + Gravity.TOP;// 将重心位置设置为左上方,也就是(0,0)从左上方开始,而不是默认的重心位置params.setTitle("Toast");view = View.inflate(this, R.layout.rocket, null);// 初始化火箭布局//初始化火箭帧动画ImageView ivRocket = (ImageView) view.findViewById(R.id.iv_rocket);ivRocket.setBackgroundResource(R.drawable.anim_rocket);AnimationDrawable anim = (AnimationDrawable) ivRocket.getBackground();anim.start();//....}
}

完成火箭的烟雾效果：

package com.example.smallrocket;import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.animation.AlphaAnimation;
import android.widget.ImageView;
/*** 烟雾背景* @author Administrator**/
public class BackgroundActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_bg);ImageView ivTop = (ImageView) findViewById(R.id.iv_top);ImageView ivBottom = (ImageView) findViewById(R.id.iv_bottom);//渐变动画AlphaAnimation anim = new AlphaAnimation(0f, 1f);anim.setDuration(1000);anim.setFillAfter(true);//动画结束后保持状态//运行动画ivTop.startAnimation(anim);ivBottom.startAnimation(anim);new Handler().postDelayed(new Runnable() {@Overridepublic void run() {finish();}}, 1000);//延迟1秒后结束activity}
}

package com.example.smallrocket;import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.graphics.drawable.AnimationDrawable;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.ImageView;public class RocketService extends Service {private WindowManager.LayoutParams params;private int winWidth;private int winHeight;private WindowManager mWM;private View view;private int startX;private int startY;private int endX;private int endY;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();mWM = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);winWidth = mWM.getDefaultDisplay().getWidth();winHeight = mWM.getDefaultDisplay().getHeight();params = new WindowManager.LayoutParams();params.width = WindowManager.LayoutParams.WRAP_CONTENT;params.height = 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;// 电话窗口它用于电话交互(特别是呼入)。它置于所有应用程序之上，状态栏之下。params.gravity = Gravity.LEFT + Gravity.TOP;// 将重心位置设置为左上方,也就是(0,0)从左上方开始,而不是默认的重心位置params.setTitle("Toast");view = View.inflate(this, R.layout.rocket, null);// 初始化火箭布局//初始化火箭帧动画ImageView ivRocket = (ImageView) view.findViewById(R.id.iv_rocket);ivRocket.setBackgroundResource(R.drawable.anim_rocket);AnimationDrawable anim = (AnimationDrawable) ivRocket.getBackground();anim.start();mWM.addView(view, params);view.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:// 初始化起点坐标startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_MOVE:endX = (int) event.getRawX();endY = (int) event.getRawY();// 计算移动偏移量int dx = endX - startX;int dy = endY - startY;// 更新浮窗位置params.x += dx;params.y += dy;// 防止坐标偏离屏幕if (params.x < 0) {params.x = 0;}if (params.y < 0) {params.y = 0;}// 防止坐标偏离屏幕if (params.x > winWidth - view.getWidth()) {params.x = winWidth - view.getWidth();}if (params.y > winHeight - view.getHeight()) {params.y = winHeight - view.getHeight();}// System.out.println("x:"+params.x+",y:"+params.y);mWM.updateViewLayout(view, params);// 重新初始化起点坐标startX = (int) event.getRawX();startY = (int) event.getRawY();break;case MotionEvent.ACTION_UP:if (params.x > 100 && params.x < 250&& params.y > winHeight - 100) {System.out.println("发射火箭");sendRocket();//启动烟雾效果Intent intent = new Intent(RocketService.this, BackgroundActivity.class);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//启动一个栈来存放activitystartActivity(intent);}break;default:break;}return true;}});}private Handler mHandler = new Handler(){public void handleMessage(android.os.Message msg) {int y = msg.arg1;params.y = y;mWM.updateViewLayout(view, params);};};protected void sendRocket() {//设置火箭居中params.x = winWidth/2 - view.getWidth()/2;mWM.updateViewLayout(view, params);new Thread(){public void run() {int pos = 380;//移动总距离for (int i = 0; i <= 10; i++) {//等待一段时间再更新位置，用于控制火箭速度try {Thread.sleep(50);} catch (InterruptedException e) {e.printStackTrace();}int y = pos - 38*i;Message msg = Message.obtain();msg.arg1 = y;mHandler.sendMessage(msg);}};}.start();}@Overridepublic void onDestroy() {if (mWM != null && view != null) {mWM.removeView(view);view = null;}super.onDestroy();}
}

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