不同Android版本上的奇怪行为Constraintlayout动画

Posted 2023-04-18

【中文标题】不同Android版本上的奇怪行为Constraintlayout动画

【英文标题】：Strange behaviour Constraint Layout Animation on differente Android versions

【发布时间】：2021-02-07 08:58:17

【问题描述】：

我制作了一个动画来表示我的 android 应用程序中的玩家数量（2 个玩家 = 2 个瓶子等等......）。 我对结果很满意，但它不适用于我在 Android 5.0 上的旧设备。 应用的最低SDK版本是21，应该没问题。

我想制作这样的动画：Correct animation on Android 10.0。但在 Android 5.0 中，我们有一些值（例如从 3 到 4 但不是从 5 到 4）这种行为：Wrong animation on Android 5.0。

我尝试了不同的布局、资源等，但我无法让它在 Android 5.0 上 100% 正确运行。

import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Build;
import android.os.Bundle;
import android.transition.ChangeBounds;
import android.transition.TransitionManager;
import android.view.View;
import android.view.animation.AnticipateInterpolator;
import android.widget.Button;
import android.widget.TextView;
import android.widget.VideoView;

import androidx.appcompat.app.AppCompatActivity;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.constraintlayout.widget.ConstraintSet;

public class PickNbrPlayersScreen extends AppCompatActivity 

    private ConstraintLayout layout;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.menu_pick_nbr_players_2);

        layout = findViewById(R.id.bottles_2);

        nbrPlayers = findViewById(R.id.currentPlayerCountTextView);
    

    public void decreasePlayerNbr(View view) 
        nbrOfPlayers--;
        if (nbrOfPlayers < 2) 
            nbrOfPlayers = 8;
        
        nbrPlayers.setText(String.valueOf(nbrOfPlayers));
        playAnimation(nbrOfPlayers);
    

    public void increasePlayerNbr(View view) 
        nbrOfPlayers = Math.max(2, (nbrOfPlayers + 1) % 9);
        nbrPlayers.setText(String.valueOf(nbrOfPlayers));
        playAnimation(nbrOfPlayers);
    

    private void playAnimation(int nbrOfPlayers) 
        ConstraintSet constraintSet = new ConstraintSet();
        int currentLayoutId = getCorrectLayout(nbrOfPlayers);
        constraintSet.clone(this, currentLayoutId);

        ChangeBounds transition = new ChangeBounds();
        transition.setInterpolator(new AnticipateInterpolator(1.0f));
        transition.setDuration(500);

        TransitionManager.beginDelayedTransition(layout, transition);
        constraintSet.applyTo(layout);
    

    private int getCorrectLayout(int nbrOfPlayers) 
        int layoutId;
        switch (nbrOfPlayers) 
            case 2:
                layoutId = R.layout.menu_pick_nbr_players_2;
                break;
            case 3:
                layoutId = R.layout.menu_pick_nbr_players_3;
                break;
            case 4:
                layoutId = R.layout.menu_pick_nbr_players_4;
                break;
            case 5:
                layoutId = R.layout.menu_pick_nbr_players_5;
                break;
            case 6:
                layoutId = R.layout.menu_pick_nbr_players_6;
                break;
            case 7:
                layoutId = R.layout.menu_pick_nbr_players_7;
                break;
            case 8:
                layoutId = R.layout.menu_pick_nbr_players_8;
                break;
            default:
                throw new IllegalStateException("Unexpected value: " + nbrOfPlayers);
        
        return layoutId;
    

我的一个布局例如：

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/bottles_2"
    android:layout_
    android:layout_
    tools:context=".menuScreens.PickNbrPlayersScreen">


    <ImageView
        android:id="@+id/bgImage"
        android:layout_
        android:layout_
        android:contentDescription="@null"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0"
        app:srcCompat="@drawable/nbrplayersback" />


    <!-- Beer Bottles -->

    <ImageView
        android:id="@+id/beerBottle_2"
        android:layout_
        android:layout_
        app:layout_constraintBottom_toTopOf="@+id/increasePlayerNbrButton"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.551"
        app:layout_constraintStart_toEndOf="@+id/beerBottle_1"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.545"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_1"
        android:layout_
        android:layout_
        app:layout_constraintBottom_toTopOf="@+id/decreasePlayerButton"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.231"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.145"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_8"
        android:layout_
        android:layout_
        app:layout_constraintStart_toStartOf="@+id/beerBottle_4"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_7"
        android:layout_
        android:layout_
        app:layout_constraintEnd_toEndOf="@+id/beerBottle_3"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_6"
        android:layout_
        android:layout_
        app:layout_constraintStart_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_5"
        android:layout_
        android:layout_
        app:layout_constraintEnd_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_4"
        android:layout_
        android:layout_
        app:layout_constraintStart_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />

    <ImageView
        android:id="@+id/beerBottle_3"
        android:layout_
        android:layout_
        app:layout_constraintEnd_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/beerbottle" />


    <!-- Buttons and TextViews -->

    <Button
        android:id="@+id/decreasePlayerButton"
        style="@style/RoundButton"
        android:layout_
        android:layout_
        android:onClick="decreasePlayerNbr"
        android:text="@string/minusSign"
        android:textSize="@dimen/menu_decrease_textSize"
        app:layout_constraintBottom_toBottomOf="@+id/currentPlayerCountTextView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.25"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/currentPlayerCountTextView"
        app:layout_constraintVertical_bias="0.5" />

    <Button
        android:id="@+id/increasePlayerNbrButton"
        style="@style/RoundButton"
        android:layout_
        android:layout_
        android:onClick="increasePlayerNbr"
        android:text="@string/plusSign"
        android:textSize="@dimen/menu_decrease_textSize"
        app:layout_constraintBottom_toBottomOf="@+id/currentPlayerCountTextView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.75"
        app:layout_constraintStart_toStartOf="@+id/bgImage"
        app:layout_constraintTop_toTopOf="@+id/currentPlayerCountTextView" />

    <TextView
        android:id="@+id/currentPlayerCountTextView"
        android:layout_
        android:layout_
        android:layout_marginBottom="16dp"
        android:text="2"
        android:textColor="@color/colorNormalText"
        android:textSize="@dimen/menu_nbr_of_players_textSize"
        app:layout_constraintBottom_toTopOf="@+id/continueButton"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1" />

    <Button
        android:id="@+id/continueButton"
        android:layout_
        android:layout_
        android:layout_marginBottom="@dimen/menu_button_margin_bottom"
        android:onClick="nextMenu"
        android:text="@string/Continue"
        app:layout_constraintBottom_toTopOf="@+id/subtitle_textView"
        app:layout_constraintEnd_toEndOf="@+id/subtitle_textView"
        app:layout_constraintStart_toStartOf="@+id/subtitle_textView"
        app:layout_constraintTop_toTopOf="@+id/videoView"
        app:layout_constraintVertical_bias="1.0" />

    <TextView
        android:id="@+id/subtitle_textView"
        android:layout_
        android:layout_
        android:layout_marginBottom="@dimen/menu_subtext_margin_bottom"
        android:text="@string/subtitle_NbrPlayers"
        android:textColor="@color/colorNormalButton"
        android:textSize="@dimen/menu_subtext_textSize"
        app:layout_constraintBottom_toBottomOf="@+id/videoView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

有什么办法可以解决这种奇怪的行为吗？还是版本问题？

感谢您的帮助和时间，祝您有美好的一天！

【参考方案1】：

我无法查看动画，因为链接已损坏。顺便说一句，我建议使用 androidx 包中的转换类。我的意思是使用this

import androidx.transition.ChangeBounds;
import androidx.transition.TransitionManager;

而不是这个：

import android.transition.ChangeBounds;
import android.transition.TransitionManager;

android.transition 类是内置在平台中的，它们可能包含永远无法修复的错误。