PopupWindow

CustomerPopWindow popWindow = new CustomerPopWindow(mContext);
popWindow.showPopup(toolbar);

//类
public class CustomerPopWindow extends PopupWindow {

private static final String TAG = "CustomerPopWindow";

public CustomerPopWindow(final Context context){

LayoutInflater layoutInflater = LayoutInflater.from(context);
View popView = layoutInflater.inflate(R.layout.customer_popup, null, false);
// 设置SelectPicPopupWindow的View
this.setContentView(popView);

this.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
// 设置SelectPicPopupWindow弹出窗体可点击
this.setFocusable(true);
this.setOutsideTouchable(true);
// 点击“返回Back”也能使其消失，并且并不会影响你的背景
//this.setBackgroundDrawable(new BitmapDrawable(context.getResources(),
//		Bitmap.createBitmap(1,1,Bitmap.Config.ARGB_8888)));
this.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

this.update();
TextView tvAllCustomer = (TextView) popView.findViewById(R.id.tv_all_customer);
TextView tvWechatCustomer = (TextView) popView.findViewById(R.id.tv_wechat_customer);
TextView tvOtherCustomer = (TextView) popView.findViewById(R.id.tv_other_customer);
tvAllCustomer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "==tvAllCustomer==");
CustomerPopWindow.this.dismiss();
}
});
tvWechatCustomer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "==tvWechatCustomer==");
CustomerPopWindow.this.dismiss();
}
});
tvOtherCustomer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "==tvOtherCustomer==");
CustomerPopWindow.this.dismiss();
}
});

}

public void showPopup(View parent) {
if(!this.isShowing()){

//int[] location = new int[2];
//parent.getLocationOnScreen(location);
//this.showAtLocation(parent, Gravity.TOP|Gravity.CENTER_HORIZONTAL,
//		location[0]-this.getWidth(), location[1]);

this.getContentView().measure(0,0); //测量ContentView尺寸
int xPos = (parent.getWidth() - this.getContentView().getMeasuredWidth()) / 2; //获取偏移量
this.showAsDropDown(parent, xPos, 0);
}else{
this.dismiss();
}
}
}