android悬浮窗

##悬浮窗具体的做法

小米5，7.0

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if (Build.VERSION.SDK_INT \>= Build.VERSION_CODES.O) {
param.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
} else if (Build.VERSION.SDK_INT \>= Build.VERSION_CODES.N){
param.type = WindowManager.LayoutParams.TYPE_PHONE;//判断是否是洗小米系统，如果是，使用toast.settext去实现
} else {
param.type = WindowManager.LayoutParams.TYPE_TOAST;
}

https://blog.csdn.net/yhaolpz/article/details/78527803

https://github.com/yhaolpz/FloatWindow

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 final WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        WindowManager.LayoutParams param = new WindowManager.LayoutParams();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            param.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
            param.type = WindowManager.LayoutParams.TYPE_PHONE;
        } else {
            param.type = WindowManager.LayoutParams.TYPE_TOAST;
        }
        param.format = PixelFormat.TRANSLUCENT;
        param.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL; // 不能抢占聚焦点
        param.flags = param.flags | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
        param.flags = param.flags | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS; // 排版不受限制

        param.alpha = 1f;
        param.gravity = Gravity.CENTER;   //调整悬浮窗口至左上角
        param.x = 0;
        param.y = 0;
        final View v = LayoutInflater.from(context).inflate(R.layout.dialog_buy_share, null);

        Button btnPopup = (Button) v.findViewById(R.id.confirm_btn);
        Button btnCancel = (Button) v.findViewById(R.id.cancel_btn);

        if (!TextUtils.isEmpty(bean.getButtonText())) {
            btnPopup.setText(bean.getButtonText());
        }

        btnPopup.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                StatisticsUtils.statisticsEvent(context, "购买成功页popup_点击_分享", "活动名称", "邀请");
                windowManager.removeView(v);
                if (bean != null && ActivityManager.getInstance().currentActivity() != null) {
                    RedirectActivityUtils.redirectPage(ActivityManager.getInstance().currentActivity(), bean);
//                    ActivityMapManager.finishActivity(InvestSuccessActivity.class.getSimpleName());
//                    ActivityMapManager.finishActivity(BuyFixResultCountDownActivity.class.getSimpleName());
                }
            }
        });
        btnCancel.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
              windowManager.removeView(v);
            }
        });
        if (windowManager != null) {
            windowManager.addView(v, param);
        }