Height not correct when inflating custom layout about balloon HOT 1 CLOSED

Hi, thank you for your issue.
Actually it is an expected result.

The measuring size of the textView is difficult because it is changed by every device's size of letters and languages or other environments. So If we want to get the exact size of the width/height of the textView, the textView must be inflated completely.

So PopupWindow can't know the exact size of the textView. Because the layout will be inflated after showing up the PopupWindow. (The layout will be inflated on the PopupWindow.)

Fortunately, we can calculate the exact width/height size of the textView if we know the height/width size oppositely. So the basic form of the balloon (with icon and on textView) can be calculated exact height size because we know the width size of the Balloon.

Also, we can measure the exact height size of the customized popup if we know the exact width size. And there are some solutions.

1. Use fixed width/height size of the custom layout

android:layout_width="240dp"
android:layout_height="wrap_content"

or (not recommended)

android:layout_width="wrap_content"
android:layout_height="240dp"

2. Use maxWidth

By using the maxWidth attribute, the height size of the popup can be measured exactly.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:gravity="center"
  android:orientation="vertical"
  android:padding="12dp">

  <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:maxWidth="240dp"
    ...

from balloon.