转载地址:http://blog.csdn.net/dxj007/article/details/8026691
这篇文章主要介绍了PopupWindow在控件的各个方向上的显示(上、下、左、右),主要用到PopupWindow的showAtLocation()方法。
①.在控件上方:
private void showPopUp(View v) { LinearLayout layout = new LinearLayout(this); layout.setBackgroundColor(Color.GRAY); TextView tv = new TextView(this); tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); tv.setText("I'm a pop -----------------------------!"); tv.setTextColor(Color.WHITE); layout.addView(tv); popupWindow = new PopupWindow(layout,120,120); popupWindow.setFocusable(true); popupWindow.setOutsideTouchable(true); popupWindow.setBackgroundDrawable(new BitmapDrawable()); int[] location = new int[2]; v.getLocationOnScreen(location); popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0], location[1]-popupWindow.getHeight()); }
②.在控件的下方,只需修改最后一行代码即可,如:
popupWindow.showAsDropDown(v);
③.在控件的左边,只需修改最后一行代码即可,如:
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]-popupWindow.getWidth(), location[1]);
④.在控件的右边,只需修改最后一行代码即可,如:
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]+v.getWidth(), location[1]);
最后的使用,你只需要在布局文件中设置一个可点击控件,然后在你需要的类中,把该控件findViewById()出来,然后给其设置setOnClickListener(…)方法即可,在进行事件的处理时调用showPopUp()方法即可。