如何在Android应用中添加一个自定义弹框

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@drawable/store_bgimg">
 <RelativeLayout
 android:layout_width="fill_parent"
 android:layout_height="214dp"
 android:layout_centerVertical="true"
 android:layout_marginLeft="31dp"
 android:layout_marginRight="31dp"
 android:background="@drawable/tkbjzj">
 <TextView
  android:id="@+id/tetle"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_centerHorizontal="true"
  android:layout_marginTop="26dp"
  android:text="七天连锁酒店"
  android:textColor="#262626"
  android:textSize="18dp" />
 <TextView
  android:id="@+id/textdz"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_below="@+id/tetle"
  android:layout_centerHorizontal="true"
  android:layout_marginTop="34dp"
  android:text="你已领取本店7.5折优惠券"
  android:textColor="#ea302e" />
 <View
  android:layout_width="match_parent"
  android:layout_height="0.5dp"
  android:layout_above="@+id/lineardb"
  android:background="#e6e6e6" />
 <LinearLayout
  android:id="@+id/lineardb"
  android:layout_width="match_parent"
  android:layout_height="44dp"
  android:layout_alignParentBottom="true">
  <TextView
  android:id="@+id/textwzdl"
  android:layout_width="0dp"
  android:layout_height="fill_parent"
  android:layout_weight="1"
  android:gravity="center"
  android:text="我知道了"
  android:textColor="#262626"
  android:textSize="16dp" />
  <TextView
  android:id="@+id/textckxq"
  android:layout_width="0dp"
  android:layout_height="fill_parent"
  android:layout_weight="1"
  android:background="#f86c6a"
  android:gravity="center"
  android:text="查看详情"
  android:textColor="#ffffff"
  android:textSize="16dp" />
 </LinearLayout>
 </RelativeLayout>
</RelativeLayout>

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <!-- 背景颜色 -->
 <solid android:color="#ffffff" />
 <!-- 控制边界线颜色和大小 -->
 <stroke
 android:width="1dp"
 android:color="#ffffff" />
 <!-- 控制圆角大小 -->
 <corners android:radius="4dp" />
</shape>

/**
 * 弹框
 */
private View mPopupHeadViewy;//创建一个view
private PopupWindow mHeadPopupclly;//PopupWindow
private TextView tetle, textdz;//title,打折
private TextView textwzdl, textckxq;//我知道了,查看详情
@SuppressWarnings("deprecation")
private void popupHeadWindowcll() {
 mPopupHeadViewy = View.inflate(getActivity(), R.layout.tankuang_layout, null);
 tetle = (TextView) mPopupHeadViewy.findViewById(R.id.tetle);
 textdz = (TextView) mPopupHeadViewy.findViewById(R.id.textdz);
 textwzdl = (TextView) mPopupHeadViewy.findViewById(R.id.textwzdl);
 textckxq = (TextView) mPopupHeadViewy.findViewById(R.id.textckxq);
 mHeadPopupclly = new PopupWindow(mPopupHeadViewy, AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.MATCH_PARENT, true);
 // 在PopupWindow里面就加上下面代码，让键盘弹出时，不会挡住pop窗口。
 mHeadPopupclly.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
 mHeadPopupclly.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
 mHeadPopupclly.setBackgroundDrawable(new BitmapDrawable());
 mHeadPopupclly.setOutsideTouchable(true);
 mHeadPopupclly.showAsDropDown(textviewid, 0, 0);
 textwzdl.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
  mHeadPopupclly.dismiss();
 }
 });
 textckxq.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
  mHeadPopupclly.dismiss();
  Toast.makeText(getActivity(), "查看详情", Toast.LENGTH_LONG).show();
 }
 });
}

mHeadPopupclly = new PopupWindow(mPopupHeadViewy, AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.MATCH_PARENT, true);