小编pjc*_*pjc的帖子

我的布局看起来像这样:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.plarke.proto1.QuizActivity">

<Button
    android:id="@+id/compare_settings"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Button"
    app:layout_constraintTop_toTopOf="parent"
    android:layout_marginTop="16dp"
    android:layout_marginRight="16dp"
    app:layout_constraintRight_toRightOf="parent"
    android:layout_marginEnd="16dp" />

<TextView
    android:id="@+id/compare_score"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView"
    app:layout_constraintTop_toTopOf="parent"
    android:layout_marginTop="16dp"
    android:layout_marginLeft="16dp"
    app:layout_constraintLeft_toLeftOf="parent"
    android:layout_marginStart="16dp" />

<SeekBar
    android:id="@+id/compare_pitchbar"
    android:layout_width="0dp"
    android:layout_height="23dp"
    android:layout_marginBottom="50dp"
    android:layout_marginEnd="16dp"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:layout_marginStart="16dp"
    android:progressBackgroundTint="@color/colorAccent"
    android:progressBackgroundTintMode="src_over"
    app:layout_constraintBottom_toTopOf="@+id/textView"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent" />

<Button
    android:id="@+id/button2"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginBottom="16dp"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:text="Button"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    android:layout_marginStart="16dp"
    android:layout_marginEnd="16dp" />

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="50dp"
    app:layout_constraintBottom_toTopOf="@+id/button2"
    tools:text="The seekbar is all the way to the left."
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintLeft_toLeftOf="parent" …

object.__dict__ 和其他地方的隐藏方法设置为这样的事情:

 <dictproxy {'__add__': <slot wrapper '__add__' of 'instance' objects>,
 '__and__': <slot wrapper '__and__' of 'instance' objects>,
 '__call__': <slot wrapper '__call__' of 'instance' objects>,
 '__cmp__': <slot wrapper '__cmp__' of 'instance' objects>,
 '__coerce__': <slot wrapper '__coerce__' of 'instance' objects>,
 '__contains__': <slot wrapper '__contains__' of 'instance' objects>,
 '__delattr__': <slot wrapper '__delattr__' of 'instance' objects>,
 '__delitem__': <slot wrapper '__delitem__' of 'instance' objects>,
 '__delslice__': <slot wrapper '__delslice__' of 'instance' objects>,
 '__div__': <slot wrapper '__div__' of 'instance' objects>,
 '__divmod__': <slot wrapper '__divmod__' of 'instance' objects>, …

我有一个自定义视图QuizBar，该视图是SeekBar（实际上是android.support.v7.widget.AppCompatSeekBar谁在乎的）子类，我想为其创建事件监听器。查看SeekBar源代码，我看到它更新了事件监听器，如下所示：

@Override
void onProgressRefresh(float scale, boolean fromUser, int progress) {
    super.onProgressRefresh(scale, fromUser, progress);
    if (mOnSeekBarChangeListener != null) {
        mOnSeekBarChangeListener.onProgressChanged(this, progress, fromUser);
    }
}

当我尝试做同样的事情时，在超级调用上出现错误cannot resolve method onProgressRefresh(float, boolean, int)。为什么是这样？如果不允许这样做，如何创建自定义事件监听器？

我的代码：

@Override
void onProgressRefresh(float scale, boolean fromUser, int progress) {
    super.onProgressRefresh(scale, fromUser, progress);
    if (mOnQuizBarChangeListener != null) {
        mOnQuizBarChangeListener.onProgressChanged(this, progress, fromUser);
    }
}