在代码中创建布局的方法

第一种
imageView = new ImageView(this);
FrameLayout decorView = (FrameLayout) getWindow().getDecorView();
decorView.addView(imageView);
FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) imageView.getLayoutParams();
layoutParams.width = DubDisplay.dip2px(this, 38);
layoutParams.height = DubDisplay.dip2px(this, 38);
layoutParams.gravity = Gravity.BOTTOM | Gravity.END;
layoutParams.setMargins(0, 0, DubDisplay.dip2px(this, 20), DubDisplay.dip2px(this, 20));
imageView.setBackgroundResource(R.drawable.slipping_top);
imageView.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        user_cash_listview.post(new Runnable() {
            @Override
            public void run() {
                user_cash_listview.requestFocusFromTouch();
                user_cash_listview.setSelection(0);
            }
        });
    }
});

第二种
/*lp = new WindowManager.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
        ViewGroup.LayoutParams.WRAP_CONTENT,
        WindowManager.LayoutParams.TYPE_APPLICATION,
        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE// 设置为无焦点状态
                | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, // 没有边界
        PixelFormat.TRANSLUCENT);// 半透明效果
lp.gravity = Gravity.BOTTOM;
lp.windowAnimations = R.style.bus_view;
windowManager.updateViewLayout(view, lp);*/