**1.View中的方法getLocationOnScreen(int[] location):获取该控件在屏幕中的绝对坐标并将坐标保存在数组中:如下图所示,A为屏幕的原点,R,C点即为view的绝对坐标的位置

getLocationInWindow(int[] location) :获取控件相对于父窗口的坐标,如c在R中,获取c在R中的坐标**

2.

public void click1(View v) {

View view = View.inflate(this, R.layout.dialog, null);

//获取PopupWindow中View的宽高

view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);

int measuredWidth = view.getMeasuredWidth();

int measuredHeight = view.getMeasuredHeight();

PopupWindow popupWindow = new PopupWindow(view, getResources().getDisplayMetrics().widthPixels

, getResources().getDisplayMetrics().heightPixels);

popupWindow.setFocusable(true);//popupwindow设置焦点

popupWindow.setBackgroundDrawable(new ColorDrawable(0xaa000000));//设置背景

popupWindow.setOutsideTouchable(true);//点击外面窗口消失

// popupWindow.showAsDropDown(v,0,0);

//获取点击View的坐标

int[] location = new int[2];

v.getLocationOnScreen(location);

popupWindow.showAsDropDown(v);//在v的下面

//显示在上方

popupWindow.showAtLocation(v,Gravity.NO_GRAVITY,location[0]+v.getWidth()/2,location[1]-measuredHeight);

//显示在正上方

popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, (location[0] + v.getWidth() / 2) - measuredWidth / 2, location[1]-measuredHeight);

//显示在左方

popupWindow.showAtLocation(v,Gravity.NO_GRAVITY,location[0]-popupWindow.getWidth(),location[1]);

//显示在下方

popupWindow.showAtLocation(v,Gravity.NO_GRAVITY,location[0]+v.getWidth(),location[1]);

popupWindow.setAnimationStyle(android.R.style.Animation_Translucent);//设置动画

}