在ArrayAdapter中不可单击的按钮

Question

我有一个带有可扩展列表项的自定义ListView + ArrayAdapter。当我展开列表项并滚动使其不再可见时，当我向后滚动时，展开布局中的按钮将不再可单击。但是，这个问题并不一致。有时，当我上下滚动时，这些按钮是可单击的。当我展开列表项并且不滚动时，按钮可以正常工作，所以这就是为什么我认为它一定是ArrayAdapter中的错误。

我在XML中设置了onClick，当我在ArrayAdapter的getView中检查了clickable时，这些按钮都是可单击的。

这是ArrayAdapter的getView；我在适配器中使用了多种布局，并且只有ParameterListItem是可展开的/有问题的项目。

 public View getView(int position, View convertView, ViewGroup parent) {
    final ExpandableListItem object = mData.get(position);
    final View view = storedViews.get(position);

    if (object instanceof FillerParamListItem) {
        return view;
    }

    //Load the holder
    ExpandingViewHolder holder = (ExpandingViewHolder) view.getTag();

    //Handle collapsing and expanding the cells
    if (((ParameterActivity) activity).listView.isExpanded() && !object.isExpanded()) {
        view.setAlpha(.20f);
    } else {
        view.setAlpha(1f);
    }

    if (object instanceof SwitchParamListItem) {
        ...
    } else if (object instanceof DomainListItem) {
        ...
    } else if (object instanceof ParameterListItem) {
        if (((ParameterActivity) activity).listView.isExpanded() && !object.isExpanded()) {
            holder.expandingLayout.setVisibility(View.GONE);
            holder.valueTextView.setVisibility(View.VISIBLE);

            if (activity.getCoreApplication().getOfflineMode()) {
                holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.main_list_item_background_offline));
            } else {
                holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.main_list_item_background));
            }

            holder.collapsedLayout.setElevation(0);
        } else {
            if (object.isExpanded()) {
                holder.expandingLayout.setVisibility(View.VISIBLE);
                holder.valueTextView.setVisibility(View.GONE);
                holder.valueEditText.setVisibility(View.VISIBLE);

                if (activity.getCoreApplication().getOfflineMode()) {
                    holder.expandingLayout.setBackground(activity.getResources().getDrawable(R.drawable.parameter_activity_expanded_layout_background_offline));
                    holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.parameter_activity_expanded_layout_background_offline));
                } else {
                    holder.expandingLayout.setBackground(activity.getResources().getDrawable(R.drawable.parameter_activity_expanded_layout_background));
                    holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.parameter_activity_expanded_layout_background));
                }

                holder.collapsedLayout.setElevation(3.0f * activity.getResources().getDisplayMetrics().density);
            } else {
                holder.expandingLayout.setVisibility(View.GONE);
                holder.valueTextView.setVisibility(View.VISIBLE);
                holder.valueEditText.setVisibility(View.INVISIBLE);

                if (activity.getCoreApplication().getOfflineMode()) {
                    holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.main_list_item_background_offline));
                } else {
                    holder.collapsedLayout.setBackground(activity.getResources().getDrawable(R.drawable.main_list_item_background));
                }

                holder.collapsedLayout.setElevation(0);
            }
        }

        if (object.getImgResource() != ExpandableListItem.NO_ICON) {
            holder.imageView.setImageBitmap(object.getImage());
        } else {
            holder.imageView.setVisibility(View.INVISIBLE);
        }

        holder.titleTextView.setText(object.name);
        holder.valueTextView.setText(object.getValue());
        holder.unitTextView.setText(object.unitSym);

        holder.descriptionTextView.setText(object.description);
        holder.useTextView.setText(object.hint);

        ParameterListItem parameterListItem = (ParameterListItem) object;

        //Register listeners for the seeker bar and EditText for this specific parameter
        TextListener editTextListener = new TextListener(parameterListItem, activity, view, holder.valueEditText);
        holder.seekbar.setOnSeekBarChangeListener(parameterListItem.getListener());
        holder.valueEditText.addTextChangedListener(editTextListener);
        parameterListItem.registerTextListener(editTextListener);
        holder.valueEditText.setOnEditorActionListener(editTextListener);
        parameterListItem.registerSeekBar(holder.seekbar);

        holder.valueEditText.setTag("PROGRAM");
        holder.valueEditText.setText(object.getValue());
        holder.valueEditText.setTag("NONE");

        //show value and symbols within the expanded cells for the seeker bar track
        holder.minValueTextView.setText(Util.getStringForFloat(parameterListItem.getMinValue()) + object.unitSym);
        holder.maxValueTextView.setText(Util.getStringForFloat(parameterListItem.getMaxValue()) + object.unitSym);
        holder.middleValueTextView.setText(Util.getStringForFloat((parameterListItem.getMaxValue() + parameterListItem.getMinValue()) / 2) + object.unitSym);

        view.setOnTouchListener(editTextListener);
    }

    object.assocView = view;

    return view;
}

这是我的Expandable List Item的XML（第一个RelativeLayout是折叠视图，而第二个是展开视图）：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/parentlinearlayoutid"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"

android:clipToPadding="false"

android:paddingBottom="3dp"

android:layout_gravity="center_horizontal">

<RelativeLayout
    android:id="@+id/parameter_activity_parameter_background"
    android:layout_height="150dp"
    android:layout_width="530dp"
    android:orientation="horizontal"

    android:layout_marginBottom="10dp"

    android:background="@drawable/main_list_item_background"

    android:layout_gravity="center">

    <ImageView
        android:id="@+id/parameter_activity_parameter_image"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"

        android:layout_marginLeft="25dp"
        android:layout_marginTop="15dp"
        android:layout_marginBottom="15dp"

        android:adjustViewBounds="true"
        android:background="@null"

        android:src="@drawable/ic_launcher"

        android:layout_alignParentStart="true"
        android:layout_centerVertical="true"/>

    <TextView
        android:id="@+id/parameter_activity_parameter_title"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"

        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"

        android:text="Title"
        android:textStyle="bold"
        android:textSize="21sp"
        android:textColor="@color/main_text_color"/>

    <EditText
        android:id="@+id/parameter_activity_parameter_edit_value"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_marginRight="10dp"

        android:layout_toLeftOf="@+id/parameter_activity_parameter_units"
        android:layout_centerVertical="true"

        android:inputType="number|numberSigned|numberDecimal"

        android:text="Name"
        android:textSize="18sp"

        android:selectAllOnFocus="true"
        android:visibility="gone"/>

    <TextView
        android:id="@+id/parameter_activity_parameter_value"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"

        android:layout_marginRight="10dp"

        android:layout_toLeftOf="@+id/parameter_activity_parameter_units"
        android:layout_centerVertical="true"

        android:text="4"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/parameter_activity_parameter_units"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"

        android:layout_marginRight="40dp"

        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"

        android:text="deg"
        android:textSize="18sp" />

</RelativeLayout>

<com.idunnololz.expandingcells.ExpandingLayout
    android:id="@+id/parameter_activity_parameter_expanding_layout"
    android:layout_height="325dp"
    android:layout_width="530dp"

    android:layout_gravity="center"

    android:background="@drawable/parameter_activity_expanded_layout_background"

    android:elevation="3dp"

    android:layout_marginTop="-15dp"

    android:visibility="visible">

    <View
        android:layout_width="475dp"
        android:layout_height="1dp"

        android:background="@color/secondary_button_color"

        android:layout_centerHorizontal="true" />

    <RelativeLayout
        android:id="@+id/parameter_activity_parameter_slider_layout"
        android:layout_width="match_parent"
        android:layout_height="65dp"

        android:layout_marginTop="10dp"

        android:layout_centerHorizontal="true"
        android:layout_alignParentTop="true">

        <TextView
            android:id="@+id/parameter_activity_parameter_min_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:layout_alignParentStart="true"

            android:layout_marginTop="10dp"
            android:layout_marginLeft="15dp"

            android:text="-20"
            android:textColor="@color/secondary_text_color"
            android:textStyle="bold"
            android:textSize= "18sp"/>

        <TextView
            android:id="@+id/parameter_activity_parameter_middle_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:layout_centerHorizontal="true"

            android:layout_marginTop="10dp"

            android:text="-5"
            android:textColor="@color/secondary_text_color"
            android:textStyle="bold"
            android:textSize= "18sp"/>

        <com.usb.exo.ui.CustomSeekBar
            android:id="@+id/parameter_activity_parameter_slider"
            android:layout_width="500dp"
            android:layout_height="wrap_content"

            android:layout_centerHorizontal="true"

            android:layout_marginTop="20dp"

            android:progress="1"
            android:progressDrawable="@android:color/transparent"

            android:thumb="@drawable/slidebutton"

            android:layout_alignParentBottom="true"

            android:isScrollContainer="false" />

        <TextView
            android:id="@+id/parameter_activity_parameter_max_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:layout_alignParentEnd="true"

            android:layout_marginTop="10dp"
            android:layout_marginRight="15dp"

            android:text="10"
            android:textColor="@color/secondary_text_color"
            android:textStyle="bold"
            android:textSize= "18sp"/>
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/parameter_activity_parameter_description_layout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"

        android:layout_below="@id/parameter_activity_parameter_slider_layout"

        android:layout_marginLeft="20dp"

        android:orientation="vertical">

        <TextView
            android:id="@+id/parameter_activity_parameter_description_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:paddingTop="20dp"
            android:paddingEnd="7dp"
            android:paddingStart="0dp"

            android:text="Description"
            android:textColor="@color/secondary_text_color"
            android:textStyle="bold"
            android:textSize="18sp"/>

        <TextView
            android:id="@+id/parameter_activity_parameter_description_text"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"

            android:paddingTop="10dp"

            android:text="Increasing angle will bend user forward. Adjusts user comfort in sitting."
            android:textColor="@color/main_text_color"
            android:textSize="15sp"
            android:textStyle="normal"/>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/parameter_activity_parameter_use_layout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"

        android:layout_below="@id/parameter_activity_parameter_description_layout"

        android:layout_marginLeft="20dp"

        android:orientation="vertical">

        <TextView
            android:id="@+id/parameter_activity_parameter_use_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:paddingTop="20dp"
            android:paddingEnd="7dp"
            android:paddingStart="0dp"

            android:text="Use"
            android:textColor="@color/secondary_text_color"
            android:textStyle="bold"
            android:textSize="18sp"/>

        <TextView
            android:id="@+id/parameter_activity_parameter_use_text"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"

            android:paddingTop="10dp"

            android:text="Bends user forward or backward while sitting. Angle of torso relative to vertical."
            android:textColor="@color/main_text_color"
            android:textSize="15sp"
            android:textStyle="normal"/>
    </LinearLayout>

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"

        android:layout_below="@id/parameter_activity_parameter_use_layout"

        android:layout_marginTop="20dp"

        android:orientation="horizontal"

        android:background="@android:color/transparent">

        <Button
            android:id="@+id/parameter_activity_parameter_cancel_button"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"

            android:layout_alignParentStart="true"

            android:layout_marginLeft="10dp"

            android:onClick="cancelClicked"
            android:clickable="true"

            android:background="?android:attr/selectableItemBackground"

            android:text="Cancel"
            android:textColor="@color/button_text_color"
            android:textSize="21sp"
            android:textStyle="bold"/>

        <Button
            android:id="@+id/parameter_activity_parameter_undo_button"
            android:layout_height="wrap_content"
            android:layout_width = "wrap_content"

            android:layout_centerHorizontal="true"

            android:clickable="true"
            android:onClick="undoClicked"

            android:background="?android:attr/selectableItemBackground"

            android:text="Undo Last Change"
            android:textColor="@color/button_text_color"
            android:textSize="21sp"
            android:textStyle="bold"/>

        <Button
            android:id="@+id/parameter_activity_parameter_apply_button"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"

            android:layout_alignParentEnd="true"

            android:layout_marginRight="10dp"

            android:clickable="true"
            android:onClick="applyClicked"

            android:background="?android:attr/selectableItemBackground"

            android:text="Apply"
            android:textColor="@color/button_text_color"
            android:textSize="21sp"
            android:textStyle="bold" />
    </RelativeLayout>

</com.idunnololz.expandingcells.ExpandingLayout>

我希望调用“ cancelClicked”，但事实并非如此。该按钮似乎确实有一些动作（背景变暗）。