XiaoxintongSystemOS/app/src/main/res/layout/activity_update.xml

<?xml version="1.0" encoding="utf-8"?>
<layout 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"
    tools:context=".activity.update.UpdateActivity">

    <data>

        <variable
            name="appInfo"
            type="com.xxpatx.os.bean.AppInfo" />

        <variable
            name="msg"
            type="String" />

        <variable
            name="click"
            type="com.xxpatx.os.activity.update.UpdateActivity.BtnClick" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="330dp"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:background="@drawable/dialog_background"
            android:orientation="vertical"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <ImageView
                android:layout_width="24dp"
                android:src="@drawable/icon_close"
                android:layout_height="24dp"
                android:adjustViewBounds="true"
                app:layout_constraintEnd_toEndOf="parent"
                android:layout_marginEnd="16dp"
                android:layout_marginTop="16dp"
                android:onClick="@{click::exit}"
                app:layout_constraintTop_toTopOf="parent"
                android:scaleType="centerCrop"/>

            <LinearLayout
                android:id="@+id/linearLayout2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="32dp"
                android:gravity="center"
                android:orientation="horizontal"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent">

                <TextView
                    android:id="@+id/title"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center_vertical"
                    android:text="检查更新"
                    android:textColor="@color/black"
                    android:textSize="18sp"
                    android:textStyle="bold"
                    android:visibility="visible" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="16dp"
                android:layout_marginBottom="16dp"
                android:orientation="vertical"
                app:layout_constraintBottom_toTopOf="@+id/linearLayout3"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/linearLayout2">

                <TextView
                    android:id="@+id/message"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="24dp"
                    android:layout_marginEnd="24dp"
                    android:gravity="center"
                    android:lineSpacingExtra="2dp"
                    android:lineSpacingMultiplier="1.2"
                    android:minHeight="50dp"
                    android:minLines="2"
                    android:text="@{msg}"
                    android:textColor="@color/black"
                    android:textSize="16sp"
                    tools:text="提示消息提示消息提示消息提示消息提示消息" />

                <ImageView
                    android:layout_width="64dp"
                    android:layout_height="64dp"
                    android:layout_gravity="center"
                    android:layout_marginTop="16dp"
                    android:adjustViewBounds="true"
                    android:scaleType="centerCrop"
                    android:src="@mipmap/ic_launcher" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_marginTop="8dp"
                    android:text="@{appInfo.app_version_name}"
                    android:textColor="@color/black"
                    android:textSize="16sp" />

            </LinearLayout>

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/linearLayout3"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="32dp"
                app:layout_constraintBottom_toBottomOf="parent">

                <TextView
                    android:id="@+id/negtive"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginEnd="24dp"
                    android:layout_weight="1"
                    android:background="@drawable/update_cancel_background"
                    android:gravity="center"
                    android:onClick="@{click.exit}"
                    android:singleLine="true"
                    android:text="取消"
                    android:textColor="@color/white"
                    android:textSize="16sp"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <TextView
                    android:id="@+id/positive"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="24dp"
                    android:layout_weight="1"
                    android:background="@drawable/update_background"
                    android:gravity="center"
                    android:onClick="@{click.upgrade}"
                    android:singleLine="true"
                    android:text="更新"
                    android:textColor="@color/white"
                    android:textSize="16sp"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    app:layout_constraintVertical_bias="0.0" />
            </androidx.constraintlayout.widget.ConstraintLayout>
        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>