popupWindow

  tv3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 一个自定义的布局，作为显示的内容
                View contentView = LayoutInflater.from(context).inflate(
                        R.layout.f2_popupwindow, null);
                // 设置按钮的点击事件
                Button button = (Button) contentView.findViewById(R.id.button1);
                final PopupWindow popupWindow = new PopupWindow(contentView,
                        ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);

                button.setOnClickListener(new View.OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        nationslist.remove(position);
                        notifyDataSetChanged();
                        Toast.makeText(context, "已取消这条新闻",
                                Toast.LENGTH_SHORT).show();

                        popupWindow.dismiss();
                    }
                });


                popupWindow.setTouchable(true);

                popupWindow.setTouchInterceptor(new View.OnTouchListener() {

                    @Override
                    public boolean onTouch(View v, MotionEvent event) {

                        Log.i("mengdd", "onTouch : ");

                        return false;
                        // 这里如果返回true的话，touch事件将被拦截
                        // 拦截后 PopupWindow的onTouchEvent不被调用，这样点击外部区域无法dismiss
                    }
                });

                // 设置好参数之后再show
                popupWindow.showAsDropDown(v);

            }
        });

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:text="不感兴趣"
        android:textSize="20sp" />