2024/4/2

跟教程写一个todoapplication

fragment_list样式代码

<?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">

    <data>
        <variable
            name="mSharedViewModel"
            type="com.example.to_do_application.fragments.SharedViewModel">

        </variable>
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/listLayout"
        tools:context=".fragments.list.ListFragment">


        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:paddingTop="8dp"
            android:clipToPadding="false"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/floatingActionButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="24dp"
            android:layout_marginBottom="24dp"
            android:backgroundTint="#673AB7"
            android:clickable="true"
            android:focusable="true"
            android:navigateToAddFragment="@{true}"
            android:src="@drawable/ic_add"
            android:tint="@color/white"
            app:backgroundTint="@color/lightGray"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent" />

        <ImageView
            android:id="@+id/no_data_imageView"
            android:layout_width="238dp"
            android:layout_height="195dp"
            android:src="@drawable/ic_baseline_no_sim_24"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.49"
            android:visibility="invisible"
            android:emptyDatabase="@{mSharedViewModel.emptyDatabase}"
            app:layout_constraintStart_toStartOf="@+id/recyclerView"
            app:layout_constraintTop_toTopOf="@+id/recyclerView"
            app:layout_constraintVertical_bias="0.38" />

        <TextView
            android:id="@+id/no_data_textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text=" no_data"
            android:textSize="16sp"
            android:alpha="0.5"
            android:visibility="invisible"
            android:emptyDatabase="@{mSharedViewModel.emptyDatabase}"
            app:layout_constraintEnd_toEndOf="@+id/recyclerView"
            app:layout_constraintStart_toStartOf="@+id/recyclerView"
            app:layout_constraintTop_toBottomOf="@+id/no_data_imageView" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>