1 public class MainActivity extends Activity { 2     @Override 3     protected void onCreate(Bundle savedInstanceState) { 4         super.onCreate(savedInstanceState); 5         setContentView(R.layout.activity_main); 6     } 7     /** 开启小火箭 */ 8     public void start(View view) { 9         startService(new Intent(this, RocketService.class));10         finish();11     }12     /** 取消小火箭 */13     public void cancel(View view) {14         stopService(new Intent(this, RocketService.class));15     }16 17 }

 1 import android.content.Context; 2 import android.content.res.Resources; 3 import android.util.DisplayMetrics; 4  5 //工具类 6 public class DenstyUtil { 7  8     /** 9      * This method converts dp unit to equivalent pixels, depending on device10      * density.11      * 12      * @param dp13      *            A value in dp (density independent pixels) unit. Which we need14      *            to convert into pixels15      * @param context16      *            Context to get resources and device specific display metrics17      * @return A float value to represent px equivalent to dp depending on18      *         device density19      */20     public static float convertDpToPixel(float dp, Context context) {21         Resources resources = context.getResources();22         DisplayMetrics metrics = resources.getDisplayMetrics();23         float px = dp * (metrics.densityDpi / 160f);24         return px;25     }26 27     /**28      * This method converts device specific pixels to density independent29      * pixels.30      * 31      * @param px32      *            A value in px (pixels) unit. Which we need to convert into db33      * @param context34      *            Context to get resources and device specific display metrics35      * @return A float value to represent dp equivalent to px value36      */37     public static float convertPixelsToDp(float px, Context context) {38         Resources resources = context.getResources();39         DisplayMetrics metrics = resources.getDisplayMetrics();40         float dp = px / (metrics.densityDpi / 160f);41         return dp;42     }43 44 }

 1 import java.util.List; 2 import android.app.ActivityManager; 3 import android.app.ActivityManager.RunningServiceInfo; 4 import android.content.Context; 5  6 // 工具类 7 public class ServiceUtil { 8  9     /**10      * 判断当前该服务是否在运行11      * 12      * @param context13      * @param cls14      * @return15      */16     public static boolean isServiceRunning(Context context, Class<?> cls) {17         ActivityManager activityManager = (ActivityManager) context18                 .getSystemService(Context.ACTIVITY_SERVICE);19         List<RunningServiceInfo> runningServices = activityManager20                 .getRunningServices(1024);21         for (RunningServiceInfo service : runningServices) {22             if (cls.getName().equals(service.service.getClassName())) {23                 return true;24             }25         }26         return false;27     }28 }

  1 import java.util.ArrayList;  2 import java.util.List;  3 import java.util.Timer;  4 import java.util.TimerTask;  5 import android.app.ActivityManager;  6 import android.app.ActivityManager.RunningTaskInfo;  7 import android.app.Service;  8 import android.content.Context;  9 import android.content.Intent; 10 import android.content.pm.PackageManager; 11 import android.content.pm.ResolveInfo; 12 import android.graphics.PixelFormat; 13 import android.graphics.drawable.AnimationDrawable; 14 import android.os.Handler; 15 import android.os.IBinder; 16 import android.os.Vibrator; 17 import android.util.DisplayMetrics; 18 import android.util.Log; 19 import android.view.Gravity; 20 import android.view.MotionEvent; 21 import android.view.View; 22 import android.view.View.OnTouchListener; 23 import android.view.WindowManager; 24 import android.view.WindowManager.LayoutParams; 25 import android.widget.ImageView; 26 import com.charon.rocketfly.R; 27 import com.charon.rocketfly.RocketActivity; 28 import com.charon.rocketfly.util.DenstyUtil; 29  30 public class RocketService extends Service { 31     protected static final String TAG = "RocketService"; 32     private WindowManager mWindowManager; 33     private int mWindowWidth; 34     private int mWindowHeight; 35     private static View icon; 36     private static View rocket_launcher; 37  38     private static AnimationDrawable mFireAnimationDrawable; 39     private static AnimationDrawable mLauncherAnimationDrawable; 40  41     private WindowManager.LayoutParams iconParams; 42     private WindowManager.LayoutParams launcherParams; 43  44     private static int mLauncherHeight; 45     private static int mLauncherWidth; 46  47     private Vibrator mVibrator;  // 震动 48  49     private Timer timer; 50  51     private Handler mHandler = new Handler(); 52  53     @Override 54     public IBinder onBind(Intent intent) { 55         return null; 56     } 57  58     @Override 59     public void onCreate() { 60         super.onCreate(); 61         //  62         mWindowManager = (WindowManager) this.getApplicationContext() 63                 .getSystemService(Context.WINDOW_SERVICE); 64         // 获取手机屏幕的分辨率和密度  （Pixels：像素） 65         DisplayMetrics displayMetrics = new DisplayMetrics(); 66         mWindowManager.getDefaultDisplay().getMetrics(displayMetrics); 67         mWindowWidth = displayMetrics.widthPixels; 68         mWindowHeight = displayMetrics.heightPixels; 69  70         // 取得震动服务的句柄 71         mVibrator = (Vibrator) this.getApplicationContext().getSystemService( 72                 Context.VIBRATOR_SERVICE); 73     } 74  75     @Override 76     public int onStartCommand(Intent intent, int flags, int startId) { 77         Log.e(TAG, "on start command create icon"); 78         createIcon(); 79         if (timer == null) { 80             timer = new Timer(); 81             timer.scheduleAtFixedRate(new RefreshTask(), 0, 500); 82         } 83         return super.onStartCommand(intent, flags, startId); 84     } 85  86     @Override 87     public void onDestroy() { 88         removeIcon(); 89         removeLauncher(); 90         timer.cancel(); 91         timer = null; 92         super.onDestroy(); 93     } 94  95     /** 96      * 创建桌面悬浮窗，一旦点击就变成小火箭 97      */ 98     public void createIcon() { 99         removeIcon();100         iconParams = new LayoutParams();101         icon = new ImageView(this.getApplicationContext());102         Log.e(TAG, "creat icon is not null");103         icon.setBackgroundResource(R.drawable.floating_desktop_tips_rocket_bg);104 105         icon.setOnTouchListener(new OnTouchListener() {106             float startX = 0;107             float startY = 0;108 109             @Override110             public boolean onTouch(View v, MotionEvent event) {111                 switch (event.getAction()) {112                 case MotionEvent.ACTION_DOWN:113                     // 手指一旦点击了后，就要去创建小火箭，和下面的发射台，并且给小火箭播放动画114                     startX = event.getX();115                     startY = event.getY();116                     117                     // 小火箭升空图片118                     icon.setBackgroundResource(R.drawable.rocket_fire);119                     120                     mFireAnimationDrawable = (AnimationDrawable) icon121                             .getBackground();122                     mFireAnimationDrawable.start();123                     iconParams.width = WindowManager.LayoutParams.WRAP_CONTENT;124                     iconParams.height = WindowManager.LayoutParams.WRAP_CONTENT;125                     iconParams.y = iconParams.y - iconParams.height126                             - icon.getHeight() * 2;127 128                     mWindowManager.updateViewLayout(icon, iconParams);129 130                     createLauncher();131 132                     break;133                 case MotionEvent.ACTION_MOVE:134 135                     Log.d(TAG, "action move change the location");136                     float newX = event.getRawX();137                     Log.e(TAG, "iconHeight:" + icon.getHeight() + ":::"138                             + iconParams.height);139                     float newY = event.getRawY() - icon.getHeight()140                             - iconParams.height;141                     mWindowManager.updateViewLayout(icon, iconParams);142 143                     iconParams.x = (int) (newX - startX);144                     iconParams.y = (int) (newY - startY);145 146                     // 小火箭去移动位置147                     isReadyToLaunch(event.getRawX(), event.getRawY());148 149                     break;150 151                 case MotionEvent.ACTION_UP:152                     // 手指抬起的时候，要么小火箭去发射，要么就是恢复到原来的提示图标那样153                     Log.d(TAG, "action up");154                     if (isReadyToLaunch((int) event.getRawX(),155                             (int) event.getRawY())) {156                         Intent intent = new Intent(RocketService.this,157                                 RocketActivity.class);158                         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);159                         startActivity(intent);160                         removeIcon();161                         removeLauncher();162                     } else {163                         Log.e(TAG, "action up create icon.");164                         createIcon();165                         icon.setBackgroundResource(R.drawable.floating_desktop_tips_rocket_bg);166                     }167 168                     break;169                 }170 171                 return true;172             }173         });174 175         iconParams.gravity = Gravity.LEFT | Gravity.TOP;176         iconParams.x = mWindowWidth;177         iconParams.y = mWindowHeight / 2;178         iconParams.height = WindowManager.LayoutParams.WRAP_CONTENT;179         iconParams.width = WindowManager.LayoutParams.WRAP_CONTENT;180         iconParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE181                 | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;182         iconParams.format = PixelFormat.TRANSLUCENT;183         iconParams.type = WindowManager.LayoutParams.TYPE_PRIORITY_PHONE;184 185         mWindowManager.addView(icon, iconParams);186     }187 188     private void removeIcon() {189         if (icon != null && icon.getParent() != null) {190             mWindowManager.removeView(icon);191             icon = null;192         }193         removeLauncher();194     }195 196     /**197      * 创建桌面发射台198      */199     private void createLauncher() {200         removeLauncher();201 202         launcherParams = new LayoutParams();203         rocket_launcher = new ImageView(this.getApplicationContext());204         changelauncherState(false);205 206         launcherParams.height = (int) DenstyUtil.convertDpToPixel(80,207                 this.getApplicationContext());208         launcherParams.width = (int) DenstyUtil.convertDpToPixel(200,209                 this.getApplicationContext());210         mLauncherHeight = launcherParams.height;211         mLauncherWidth = launcherParams.width;212 213         // 这个x、y是起始添加的位置214         launcherParams.x = mWindowWidth / 2 - mLauncherWidth / 2;215         launcherParams.y = mWindowHeight - mLauncherHeight;216         launcherParams.gravity = Gravity.LEFT | Gravity.TOP;217 218         Log.d(TAG, "create launcher. width::" + rocket_launcher.getWidth());219         launcherParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE220                 | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;221         launcherParams.format = PixelFormat.TRANSLUCENT;222         launcherParams.type = WindowManager.LayoutParams.TYPE_TOAST;223 224         mWindowManager.addView(rocket_launcher, launcherParams);225     }226 227     private void removeLauncher() {228         if (rocket_launcher != null && rocket_launcher.getParent() != null) {229             mWindowManager.removeView(rocket_launcher);230         }231     }232 233     /**234      * 更改发射台的状态235      * 236      * @param isReadFly237      *            是否可以进入发射状态238      */239     private void changelauncherState(boolean isReadFly) {240         if (rocket_launcher == null) {241             return;242         }243 244         if (isReadFly) {245             rocket_launcher.setBackgroundResource(R.drawable.desktop_bg_tips_3);246             if (mLauncherAnimationDrawable != null) {247                 mLauncherAnimationDrawable.stop();248             }249         } else {250             rocket_launcher.setBackgroundResource(R.drawable.status_tip);251 252             // 创建发射台253             mLauncherAnimationDrawable = (AnimationDrawable) rocket_launcher254                     .getBackground();255             if (!mLauncherAnimationDrawable.isRunning()) {256                 mLauncherAnimationDrawable.start();257             }258         }259     }260 261     /**262      * 判断是否可以进行发射263      * 264      * @param x265      *            当前火箭的距x轴的距离266      * @param y267      *            当前火箭的距y轴的距离268      * @return true为进入发射状态，反之为false269      */270     private boolean isReadyToLaunch(float x, float y) {271         if ((x > launcherParams.x && x < launcherParams.x272                 + launcherParams.width)273                 && (y > launcherParams.y)) {274             changelauncherState(true);275             Log.d(TAG, "is ready to launch.. true");276             mVibrator.vibrate(100);277             return true;278         }279         changelauncherState(false);280         return false;281     }282 283     /**284      * 判断当前界面是否是桌面285      * getRunningTasks(1)：返回的个数。当前 运行的那个task。286      * get(0)：从task中获取到最顶层的activity，这个activity就是当前显示给用户的那个activity了287      */288     private boolean isHome() {289         ActivityManager mActivityManager = (ActivityManager) getSystemService(290                 Context.ACTIVITY_SERVICE);291         List<RunningTaskInfo> rti = mActivityManager.getRunningTasks(1);292         return getHomes().contains(rti.get(0).topActivity.getPackageName());293     }294 295     /**296      * 获得属于桌面的应用的应用包名称297      * 298      * @return 返回包含所有包名的字符串列表299      */300     private List<String> getHomes() {301         List<String> names = new ArrayList<String>();302         PackageManager packageManager = this.getPackageManager();303         Intent intent = new Intent(Intent.ACTION_MAIN);304         intent.addCategory(Intent.CATEGORY_HOME);305          // 通过查询，获得所有ResolveInfo对象306         List<ResolveInfo> resolveInfo = packageManager.queryIntentActivities(307                 intent, PackageManager.MATCH_DEFAULT_ONLY);308         for (ResolveInfo ri : resolveInfo) {309             names.add(ri.activityInfo.packageName);310         }311         return names;312     }313 314     private class RefreshTask extends TimerTask {315 316         @Override317         public void run() {318             // 当前界面是桌面，且没有悬浮窗显示，则创建悬浮窗。319             if (isHome()) {320                 mHandler.post(new Runnable() {321                     @Override322                     public void run() {323                         if (icon == null) {324                             Log.e(TAG,325                                     "refresh task create icon, and the icon is null");326                             createIcon();327                         }328                     }329                 });330 331             }332             // 当前界面不是桌面，且有悬浮窗显示，则移除悬浮窗。333             else if (!isHome()) {334                 mHandler.post(new Runnable() {335                     @Override336                     public void run() {337                         removeIcon();338                     }339                 });340             }341         }342 343     }344 345 }

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 2     android:layout_width="match_parent" 3     android:layout_height="match_parent" 4     android:background="@android:color/transparent" > 5  6     <ImageView 7         android:id="@+id/iv_rocket" 8         android:layout_width="wrap_content" 9         android:layout_height="wrap_content"10         android:layout_alignParentBottom="true"11         android:layout_centerHorizontal="true"12         android:src="@drawable/rocket_fire" />13 14     <RelativeLayout15         android:id="@+id/rl_cloud"16         android:layout_width="wrap_content"17         android:layout_height="wrap_content" >18 19         <ImageView20             android:id="@+id/iv_cloud"21             android:layout_width="match_parent"22             android:layout_height="wrap_content"23             android:layout_alignParentBottom="true"24             android:background="@drawable/desktop_smoke_m"25             android:visibility="gone" />26 27         <ImageView28             android:id="@+id/iv_cloud_line"29             android:layout_width="wrap_content"30             android:layout_height="wrap_content"31             android:layout_above="@id/iv_cloud"32             android:layout_centerHorizontal="true"33             android:background="@drawable/desktop_smoke_t"34             android:visibility="gone" />35     </RelativeLayout>36 37 </RelativeLayout>

  1 import android.app.Activity;  2 import android.content.Intent;  3 import android.graphics.drawable.AnimationDrawable;  4 import android.media.MediaPlayer;  5 import android.os.Bundle;  6 import android.util.Log;  7 import android.view.View;  8 import android.view.animation.AccelerateDecelerateInterpolator;  9 import android.view.animation.AlphaAnimation; 10 import android.view.animation.Animation; 11 import android.view.animation.Animation.AnimationListener; 12 import android.view.animation.AnimationUtils; 13 import android.widget.ImageView; 14 import android.widget.RelativeLayout; 15  16 import com.charon.rocketfly.setvice.RocketService; 17 import com.charon.rocketfly.util.ServiceUtil; 18  19 /** 20  * 小火箭升空界面 21  * @author dr 22  */ 23 public class RocketActivity extends Activity { 25     protected static final String TAG = "RocketActivity"; 27     private ImageView iv_rocket; 28     private ImageView iv_cloud; 29     private ImageView iv_cloud_line; 30     private RelativeLayout rl_cloud; 31  32     private AnimationDrawable fireAnimationDrawable; 33  34     @Override 35     protected void onCreate(Bundle savedInstanceState) { 36         super.onCreate(savedInstanceState); 37         setContentView(R.layout.activity_rocket); 38         findView(); 39         initView(); 40     } 41  42     private void findView() { 43         iv_rocket = (ImageView) findViewById(R.id.iv_rocket); 44         iv_cloud = (ImageView) findViewById(R.id.iv_cloud); 45         iv_cloud_line = (ImageView) findViewById(R.id.iv_cloud_line); 46         rl_cloud = (RelativeLayout) findViewById(R.id.rl_cloud); 47     } 48  49     private void initView() { 50         iv_rocket.setPressed(true); 51         iv_rocket.setFocusable(true); 52         iv_rocket.setVisibility(View.VISIBLE); 53     } 54  55     @Override 56     protected void onStart() { 57         super.onStart(); 58         iv_rocket.setBackgroundResource(R.drawable.rocket_fire); 59         fireAnimationDrawable = (AnimationDrawable) iv_rocket.getBackground(); 60         fireAnimationDrawable.start(); 61  62         fly(); 63     } 64  65     /** 66      * 火箭飞起来的动画，同时下方播放冒烟的动画 67      */ 68     private void fly() { 69         Log.e(TAG, "fly...."); 70         Animation animation = AnimationUtils.loadAnimation( 71                 this.getApplicationContext(), R.anim.rocket_up); 72         animation.setFillAfter(true); 73  74         animation.setAnimationListener(new AnimationListener() { 75  76             @Override 77             public void onAnimationStart(Animation animation) { 78                 // 开始发射的时候去博凡动画 79                 MediaPlayer player = MediaPlayer.create(RocketActivity.this, 80                         R.raw.rocket); 81                 player.setLooping(false); 82                 player.setVolume(1.0f, 1.0f); 83                 player.start(); 84  85                 AlphaAnimation cloudAppearAnimation = new AlphaAnimation(0.1f, 86                         1.0f); 87                 cloudAppearAnimation.setDuration(500); 88  89                 Animation appearAnimation = new AlphaAnimation(0.0f, 1.0f); 90                 appearAnimation.setDuration(500); 91                 appearAnimation.setStartOffset(250); 92  93                 iv_cloud.startAnimation(cloudAppearAnimation); 94                 iv_cloud_line.startAnimation(appearAnimation); 95             } 96  97             @Override 98             public void onAnimationRepeat(Animation animation) { 99             }100 101             @Override102             public void onAnimationEnd(Animation animation) {103                 // 火箭播放完成后就去把云彩都消失104                 removeClound();105                 if (!ServiceUtil.isServiceRunning(RocketActivity.this,106                         RocketService.class)) {107                     startService(new Intent(RocketActivity.this108                             .getApplicationContext(), RocketService.class));109                 }110             }111         });112 113         iv_rocket.startAnimation(animation);114 115         createClound();116     }117 118     private void createClound() {119         iv_cloud.setVisibility(View.VISIBLE);120         iv_cloud_line.setVisibility(View.VISIBLE);121     }122 123     private void removeClound() {124         AlphaAnimation disappearAnimation = new AlphaAnimation(1.0f, 0.0f);125         disappearAnimation.setDuration(1000);126         disappearAnimation.setFillAfter(true);127         disappearAnimation128                 .setInterpolator(new AccelerateDecelerateInterpolator());129 130         disappearAnimation.setAnimationListener(new AnimationListener() {131 132             @Override133             public void onAnimationStart(Animation animation) {135             }136 137             @Override138             public void onAnimationRepeat(Animation animation) {140             }141 142             @Override143             public void onAnimationEnd(Animation animation) {144                 iv_rocket.setVisibility(View.GONE);145                 iv_cloud.setVisibility(View.GONE);146                 iv_cloud_line.setVisibility(View.GONE);147 148                 finish();149             }150         });151         rl_cloud.startAnimation(disappearAnimation);152     }153 }

 1 <?xml version="1.0" encoding="utf-8"?> 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 3     package="com.charon.rocketfly" 4     android:versionCode="1" 5     android:versionName="1.0" > 6  7     <uses-sdk 8         android:minSdkVersion="8" 9         android:targetSdkVersion="19" />10 11     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />12     <!-- 震动 -->13     <uses-permission android:name="android.permission.VIBRATE" />14     <uses-permission android:name="android.permission.GET_TASKS"/>15 16     <application17         android:allowBackup="true"18         android:icon="@drawable/ic_launcher"19         android:label="@string/app_name"20         android:theme="@style/AppTheme" >21         <activity22             android:name="com.charon.rocketfly.MainActivity"23             android:label="@string/app_name" >24             <intent-filter>25                 <action android:name="android.intent.action.MAIN" />26                 <category android:name="android.intent.category.LAUNCHER" />27             </intent-filter>28         </activity>29         30         <activity31         android:name="com.charon.rocketfly.RocketActivity"32         android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" />33      <service android:name="com.charon.rocketfly.setvice.RocketService" />34         35     </application>36 37 </manifest>