我正在尝试构建小型多人骰子游戏。为此，当我单击带有随机生成的骰子结果的按钮时，我想更新连接的实时数据库。除了结果，我还制作了三个骰子的动画。
在动画开始前单击按钮时，更新我的数据库的功能很好用。动画开始后单击按钮时，总是出现以下错误：
com.google.firebase.database.DatabaseException: No properties to serialize found on class android.view.animation.AccelerateDecelerateInterpolator
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.<init>(com.google.firebase:firebase-database@@19.2.1:547)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.loadOrCreateBeanMapperForClass(com.google.firebase:firebase-database@@19.2.1:329)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@19.2.1:166)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@19.2.1:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@19.2.1:675)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@19.2.1:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@19.2.1:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@19.2.1:675)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@19.2.1:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@19.2.1:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@19.2.1:675)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@19.2.1:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.convertToPlainJavaTypes(com.google.firebase:firebase-database@@19.2.1:60)
at com.google.firebase.database.DatabaseReference.setValueInternal(com.google.firebase:firebase-database@@19.2.1:282)
at com.google.firebase.database.DatabaseReference.setValue(com.google.firebase:firebase-database@@19.2.1:159)
at com.example.trdfschockt.MainActivity$1.onClick(MainActivity.java:81)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
我尝试将每个属性设置为公共，在每个类中实现了可序列化，甚至检查了proguard-rules文件。
这里是出现问题的代码段：
``公共类MainActivity扩展AppCompatActivity实现Serializable {
public static final Random RANDOM = new Random();
public Button rollDices, stopRoll, startAgain;
public Integer value, diceRollCounter, firstDice, secondDice, thirdDice;
public ImageView imageView1, imageView2, imageView3;
public TextView textView1;
public static int[] diceResults = new int[3];
public static schockDecision newDecision;
public static Dice[] dices = new Dice[3];
public Player player = new Player();
public DatabaseReference myRef;
public Animation anim1, anim2, anim3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rollDices = (Button) findViewById(R.id.rollDices);
stopRoll = (Button) findViewById(R.id.stopRoll);
startAgain = (Button) findViewById(R.id.startAgain);
imageView1 = (ImageView) findViewById(R.id.imageView1);
imageView2 = (ImageView) findViewById(R.id.imageView2);
imageView3 = (ImageView) findViewById(R.id.imageView3);
for (int i = 0; i < dices.length; i++) {
dices[i] = new Dice();
dices[i].setShouldDiceBeRolled(true);
dices[i].setNumber(0);
}
diceRollCounter = 0;
startAgain.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
rollDices.setEnabled(true);
myRef = FirebaseDatabase.getInstance().getReference("Player");
String id = myRef.push().getKey();
player.setUserId("asc");
player.setSchockResult(0);
player.setAmountDeckel(0);
player.setUserName("Hans22112");
player.setAufdeckReihenfolge(0);
player.setFirstDice(dices[0]);
player.setSecondDice(dices[1]);
player.setThirdDice(dices[2]);
myRef.child(id).setValue(player);
}
}
);
stopRoll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
endOfRound();
}
}
);
rollDices.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
diceRollCounter += 1;
anim1 = AnimationUtils.loadAnimation(MainActivity.this, R.anim.shake);
anim2 = AnimationUtils.loadAnimation(MainActivity.this, R.anim.shake);
anim3 = AnimationUtils.loadAnimation(MainActivity.this, R.anim.shake);
final Animation.AnimationListener animationListener = new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
value = randomDiceValue();
int res = getResources().getIdentifier("dice_" + value, "drawable", "com.example.trdfschockt");
//if (animation == anim1) {
if (animation == anim1) {
imageView1.setImageResource(res);
diceResults[0] = value;
dices[0].setNumber(value);
} else if (animation == anim2) {
imageView2.setImageResource(res);
diceResults[1] = value;
dices[1].setNumber(value);
} else if (animation == anim3) {
imageView3.setImageResource(res);
diceResults[2] = value;
dices[2].setNumber(value);
}
[大多数Android类，例如android.view.animation.AccelerateDecelerateInterpolator，除非您为此编写自定义代码，否则无法将其写入数据库。
您的代码将需要从AccelerateDecelerateInterpolator中提取重要值并写入Firebase。然后，当您从数据库中读取时，您将不得不再次从这些属性中创建一个AccelerateDecelerateInterpolator。
另请参阅：