Android 利用WindowManager实现悬浮窗 demo

package com.example.zxk.mywindowdemo; import android.content.Context; import android.graphics.PixelFormat; import android.os.Handler; import android.os.Message; import android.support.v4.view.ViewPager; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import android.view.WindowManager; import android.widget.LinearLayout; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.TextView; import java.util.ArrayList; import java.util.List; /** * Created by ZXK on 2017/10/30. */ public class WindowController { private final int HIDE = 0x001; private final int SHOW = 0x002; private final int REFRESH = 0x003; private final int CLICK = 0x004; private static WindowController instance; private Context context; private WindowManager mWindowManager; private WindowManager.LayoutParams wParamsTop, wParamsBottom; //最小滑动距离 private int mTouchSlop; //上下两个布局 private LinearLayout layoutTop, layoutBottom; private TextView top; private ViewPager viewPager; //viewPager的adapter private WindowAdapter windowAdapter; //viewPager每一页的Adapter private ViewAdapter viewAdapter; private RadioGroup radioGroup; //存放数据 private List<String> mDatas; //存放每一页的数据 private List<String> pageData; //存放视图 private List<View> viewList; private int lastX, lastY; private int downX, downY; //down 时的时间戳 private int downTime; //屏幕宽高 private int screenWidth, screenHeight; //top xy坐标, bottom y坐标 private int topY, bottomY, topX; //top 的宽高 private int topWidth, topHeight; //bottom 的高 private int bottomHeight; //状态栏的高度 private int statusBarHeight; //展开 or 收起 private boolean isShow; private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case HIDE: hideBottom(); break; case SHOW: showBottom(); break; case REFRESH: mWindowManager.updateViewLayout(layoutTop, wParamsTop); if (isShow) { mWindowManager.updateViewLayout(layoutBottom, wParamsBottom); } break; case CLICK: click(); break; default: super.handleMessage(msg); } } }; private WindowController(Context context) { this.context = context; mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); mDatas = new ArrayList<>(); viewList = new ArrayList<>(); //获取status_bar_height资源的ID int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android"); if (resourceId > 0) { //根据资源ID获取响应的尺寸值 statusBarHeight = context.getResources().getDimensionPixelSize(resourceId); } screenWidth = mWindowManager.getDefaultDisplay().getWidth(); //需要减去状态栏高度 screenHeight = mWindowManager.getDefaultDisplay().getHeight() - statusBarHeight; topWidth = WindowHelper.dip2px(context, 40); topHeight = WindowHelper.dip2px(context, 40); bottomHeight = WindowHelper.dip2px(context, 100); mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); } public static WindowController getInstance(Context context) { if (instance == null) { synchronized (WindowController.class) { if (instance == null) { instance = new WindowController(context); } } } return instance; } /** * 初始化 */ public void init() { topX = WindowHelper.getCoordinateX(context); topY = WindowHelper.getCoordinateY(context); bottomY = topY + topHeight; initTop(); initBottom(); mWindowManager.addView(layoutTop, wParamsTop); } /** * 初始化top视图 */ private void initTop() { layoutTop = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.window_top, null); top = layoutTop.findViewById(R.id.top); //监听触摸事件,实现拖动和点击。 top.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: Log.e("ZXK", "MotionEvent.ACTION_DOWN"); downTime = (int) System.currentTimeMillis(); lastX = (int) event.getRawX(); lastY = (int) event.getRawY(); //保留相对距离，后面可以通过绝对坐标算出真实坐标 downX = (int) event.getX(); downY = (int) event.getY(); break; case MotionEvent.ACTION_MOVE: Log.e("ZXK", "MotionEvent.ACTION_MOVE"); if (Math.abs(event.getRawX() - lastX) > 0 || Math.abs(event.getRawY() - lastY) > 0) { topX = (int) (event.getRawX() - downX); //需要减去状态栏高度 topY = (int) (event.getRawY() - statusBarHeight - downY); //top左右不能越界 if (topX < 0) { topX = 0; } else if ((topX + topWidth) > screenWidth) { topX = screenWidth - topWidth; } wParamsTop.x = topX; //top上下不能越界 if (topY < 0) { topY = 0; } else if ((topY + topHeight) > screenHeight) { topY = screenHeight - topHeight; } wParamsTop.y = topY; if (screenHeight - topY - topHeight < bottomHeight) { bottomY = topY - bottomHeight; } else { bottomY = topY + topHeight; } wParamsBottom.y = bottomY; lastX = (int) event.getRawX(); lastY = (int) event.getRawY(); handler.sendEmptyMessage(REFRESH); } break; case MotionEvent.ACTION_UP: int currentTime = (int) System.currentTimeMillis(); if (currentTime - downTime < 200 && Math.abs(event.getRawX() - lastX) < mTouchSlop && Math.abs(event.getRawY() - lastY) < mTouchSlop) { handler.sendEmptyMessage(CLICK); } //保留坐标 WindowHelper.setCoordinateX(context, topX); WindowHelper.set