仿360浮动金币实现

最近也在做下载平台，仿91做了个挖宝功能，现在就来说下浮动金币效果

先实现GoldApplication继承Application

public class GoldApplication extends Application {
    private WindowManager.LayoutParams wmParams=new WindowManager.LayoutParams(); 
    public WindowManager.LayoutParams getWmParams(){  
        return wmParams;  
    }  
}

再实现金币类，可以拖动，自动靠边。如果程序结束或Home键回到桌面，就调用dismiss，不然的话金币会一直在桌面上哦。

public class GoldIcon extends LinearLayout {
    private float mTouchRawX;  
    private float mTouchRawY; 
    private GestureDetector gestureDetector;
    private ImageButton gold;
    private WindowManager wm = (WindowManager) getContext().getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
    //此wmParams变量为获取的全局变量，用以保存悬浮窗口的属性  
    private WindowManager.LayoutParams wmParams = ((GoldApplication)getContext().getApplicationContext()).getWmParams();
    private int width=0,height=0;//控件宽高
    private int DW=0,DH=0,MW=0;//屏幕宽高，屏幕宽的一半
    
    public GoldIcon(Context context) {
        super(context);
        init(context);
        DW=BitmapTools.WH[0];
        DH=BitmapTools.WH[1];
        MW=DW/2;
    }

    private void init(Context context)
    {
        gestureDetector = new GestureDetector(context, gestureListener);
        View view = View.inflate(context,R.layout.gold_floatlayout,null);
        gold=(ImageButton) view.findViewById(R.id.gold);
        gold.setOnClickListener(onClick);
        gold.setOnTouchListener(frameOnTouchListener);
        this.addView(view);
    }
    final static int MESSAGE_MOVE = 0x1001;  
    final static int MESSAGE_DOWN = 0x1002;  
    final static int MESSAGE_UP = 0x1003;  
    Handler mHandler = new Handler() {  
        @Override  
        public void handleMessage(Message msg) {  
            switch (msg.what) {  
            case MESSAGE_MOVE:  
                updateViewPosition();  
                break;  
            case MESSAGE_DOWN:  
                break;  
            case MESSAGE_UP:  
                updateUpViewPosition();
                break;  
            default:  
            }  
        }  
    };  
    
// 点击Listener  
    OnTouchListener frameOnTouchListener = new OnTouchListener() {  
  
        float x,y;
        @Override
        public boolean onTouch(View v, MotionEvent event) {  
            if (null == gestureDetector || null == event) {  
                return false;  
            }  
            switch(event.getAction())
            {
                case MotionEvent.ACTION_DOWN:
                    x=event.getRawX();
                    y=event.getRawY();
                    break;
                case MotionEvent.ACTION_UP://松手时候靠边
                    if(Math.abs(x-event.getRawX())>10&&Math.abs(y-event.getRawY())>10)
                    {
                        new Thread(new Run()).start();
                        return true;
                    }
                    else
                    {
                        return false;
                    }
            }
            return gestureDetector.onTouchEvent(event);  
        }  
  
    };  
// 手势识别  
    GestureDetector.OnGestureListener gestureListener = new GestureDetector.OnGestureListener() {  
  
        @Override  
        public boolean onDown(MotionEvent e) {  
            mTouchRawX = e.getX();  
            mTouchRawY = e.getY();  
       //     mHandler.sendEmptyMessage(MESSAGE_MOVE);
            return false;  
        }  
  
        @Override  
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,  
                float velocityY) {  
  
            return true;  
        }  
  
        @Override  
        public void onLongPress(MotionEvent e) {  
            // TODO Auto-generated method stub  
            // Log.d("OnGestureListener", "onLongPress");  
  
        }  
  
        @Override  
        public boolean onScroll(MotionEvent e1, MotionEvent e2,  
                float distanceX, float distanceY) {  
            mTouchRawX = e2.getRawX();  
            mTouchRawY = e2.getRawY();  
            mHandler.sendEmptyMessage(MESSAGE_MOVE);  
  
            return true;  
        }  
  
        @Override  
        public void onShowPress(MotionEvent e) {  
//          Log.d("OnGestureListener", "onShowPress");  
        }  
  
        @Override  
        public boolean onSingleTapUp(MotionEvent e) {  
            
            return false;  
        }  
        
  
    };  
    public void show()
    {
        gold.setVisibility(View.VISIBLE);
    }
    public void dismiss()
    {
        gold.setVisibility(View.GONE);
    }
    private void updateUpViewPosition() {  
        wm.updateViewLayout(this, wmParams);  
    } 
    private void updateViewPosition() {  
        // 更新浮动窗口位置参数  
        getWH();
        wmParams.x = (int) mTouchRawX-(width);  
        wmParams.y = (int) mTouchRawY-(height);  
        wm.updateViewLayout(this, wmParams);  
  
    } 
    class Run implements Runnable
    {

        @Override
        public void run() 
        {
            while(wmParams.x>=0&&wmParams.x+width<=DW)
            {
                setWelt();
                try {
                    Thread.sleep(3);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            
            mHandler.sendEmptyMessage(MESSAGE_UP);    
        }
        
    }
    private void setWelt()
    {
        if(wmParams.x+width/2<MW)//左靠边
        {
            wmParams.x=wmParams.x-2;
        }
        else//右靠边
        {
            wmParams.x=wmParams.x+2;
        }
        mHandler.sendEmptyMessage(MESSAGE_UP);  
    }
    private void getWH()
    {
        if(width<=0||height<=0)
        {
            width=this.getWidth();
            height=this.getHeight();
        }
    }
// 响应悬浮窗口中的Button点击  
    View.OnClickListener onClick = new View.OnClickListener() {  
  
        @Override  
        public void onClick(View v) {  
            switch(v.getId())
            {
                case R.id.gold:  
//                    MainActivity.main.goToBigger();
                    break;  
            }
        }  
    };  
}

在要程序启动的首个Activity中

private WindowManager wm = null;  
private WindowManager.LayoutParams wmParams = null;
private GoldIcon gold;//仿91浮动金币

initGold();

    private void initGold()
    {
        BitmapTools.WH=BitmapTools.getWindowWidthAddHeight(this);
        gold=new GoldIcon(getApplicationContext());
        // 获取WindowManager  
        wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE);  
        // 设置LayoutParams(全局变量）相关参数  
        wmParams = ((GoldApplication) getApplication()).getWmParams();  
        /** 
         * 以下都是WindowManager.LayoutParams的相关属性 具体用途可参考SDK文档 
         */  
        wmParams.type =  LayoutParams.TYPE_PHONE;//LayoutParams.TYPE_PHONE; // 设置window type  
        wmParams.format = PixelFormat.RGBA_8888; // 设置图片格式，效果为背景透明  
  
        // 设置Window flag  
        wmParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL  
                | LayoutParams.FLAG_NOT_FOCUSABLE;  
  
        /* 
         * 下面的flags属性的效果形同“锁定”。 悬浮窗不可触摸，不接受任何事件,同时不影响后面的事件响应。 
         * wmParams.flags=LayoutParams.FLAG_NOT_TOUCH_MODAL | 
         * LayoutParams.FLAG_NOT_FOCUSABLE | LayoutParams.FLAG_NOT_TOUCHABLE; 
         */  
  
        wmParams.gravity = Gravity.LEFT | Gravity.TOP; // 调整悬浮窗口至左上角  
  
        // 设置悬浮窗口长宽数据  
        wmParams.width =  android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
        wmParams.height = android.view.ViewGroup.LayoutParams.WRAP_CONTENT; 

        
        // 显示myFloatView图像  
        wm.addView(gold, wmParams);  
    }

    public void goldShow()
    {
        gold.show();
    }
    public void goldDismiss()
    {
        gold.dismiss();
    }
    public void goToBigger()
    {
        radio_Digger.setChecked(true);
    }

android:name=".GoldApplication"

<application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar" 
        android:screenOrientation="portrait"
        android:name=".GoldApplication">