zhibo/android-app/app/src/main/res/layout/activity_heartbeat_signal.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFF2F7">

    <ImageView
        android:id="@+id/backButton"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:contentDescription="返回"
        android:src="@drawable/ic_arrow_back_24"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/titleText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="心动信号"
        android:textColor="#111111"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/subtitleText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="32dp"
        android:layout_marginEnd="32dp"
        android:layout_marginTop="8dp"
        android:gravity="center"
        android:text="发现让你心动的那个TA"
        android:textColor="#666666"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/titleText" />

    <!-- 卡片容器 -->
    <FrameLayout
        android:id="@+id/cardContainer"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="16dp"
        app:layout_constraintBottom_toTopOf="@id/actionButtons"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/subtitleText" />

    <!-- 空状态 -->
    <LinearLayout
        android:id="@+id/emptyView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="vertical"
        android:visibility="gone"
        app:layout_constraintBottom_toTopOf="@id/actionButtons"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/subtitleText">

        <ImageView
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:alpha="0.5"
            android:src="@drawable/ic_heart_24"
            app:tint="#FFCCCC" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:text="暂无更多推荐"
            android:textColor="#999999"
            android:textSize="14sp" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/btnRefresh"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:text="刷新推荐"
            app:backgroundTint="#FF4081" />

    </LinearLayout>

    <!-- 加载中 -->
    <ProgressBar
        android:id="@+id/loadingView"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:visibility="gone"
        app:layout_constraintBottom_toTopOf="@id/actionButtons"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/subtitleText" />

    <!-- 操作按钮 -->
    <LinearLayout
        android:id="@+id/actionButtons"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:gravity="center"
        android:orientation="horizontal"
        app:layout_constraintBottom_toTopOf="@id/bottomNavInclude"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">

        <!-- 跳过按钮 -->
        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/btnSkip"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:contentDescription="跳过"
            android:src="@drawable/ic_close_24"
            app:backgroundTint="#FFFFFF"
            app:elevation="4dp"
            app:fabSize="normal"
            app:tint="#F44336" />

        <!-- 超级喜欢按钮 -->
        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/btnSuperLike"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:contentDescription="超级喜欢"
            android:src="@drawable/ic_star_24"
            app:backgroundTint="#FFFFFF"
            app:elevation="4dp"
            app:fabSize="mini"
            app:tint="#2196F3" />

        <!-- 喜欢按钮 -->
        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/btnLike"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:contentDescription="喜欢"
            android:src="@drawable/ic_heart_24"
            app:backgroundTint="#FFFFFF"
            app:elevation="4dp"
            app:fabSize="normal"
            app:tint="#4CAF50" />

    </LinearLayout>

    <include
        android:id="@+id/bottomNavInclude"
        layout="@layout/include_bottom_nav"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>