试图抓住Android ListView项目的点击:android:descendantFocusability ="blocksDescendants"无法正常工作

Question

这已在StackOverflow上的许多帖子中得到解决.最推荐的解决方案是设置:

android:descendantFocusability="blocksDescendants"

在列表项布局的根布局上.我做了以下事情.

• 设置android:descendantFocusability="blocksDescendants"在根目录的项目布局.
• setDescendantFocusability(BLOCK)在listView上调用,以及每个listViewItem.
• focus=disabled在ImageButtons上设置

然而,当点击了孩子ImageButtons之一,我不能让在任何听众ListView或ListView项目射击.

下面是我用来呈现列表项的"模板".

<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/reminderItem"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:descendantFocusability="blocksDescendants"
        android:padding="0dp">

    <RelativeLayout
            android:id="@+id/topPartOfReminder"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10dp">

        <LinearLayout
                android:layout_alignParentLeft="true"
                android:layout_alignParentTop="true"
                android:orientation="vertical"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:id="@+id/textLayout">

            <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal">
                <TextView
                        android:fontFamily="sans-serif-light"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textSize="22sp"
                        android:text="10:00"
                        android:textStyle="normal"
                        android:id="@+id/textTime"/>
                <TextView
                        android:fontFamily="sans-serif-condensed"
                        android:textSize="9sp"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="AM"
                        android:paddingLeft="2dp"
                        android:textStyle="normal"
                        android:id="@+id/textAmPm"/>
                <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceMedium"
                        android:text=" - "
                        android:id="@+id/textDivider"/>
                <TextView
                        android:fontFamily="sans-serif-light"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textSize="16sp"
                        android:text="March 26"
                        android:id="@+id/textDate"/>
            </LinearLayout>
            <TextView
                    android:fontFamily="sans-serif-light"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textSize="12sp"
                    android:text="Blah blah blah blah"
                    android:id="@+id/textDescription"/>
        </LinearLayout>

        <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_toRightOf="@+id/textLayout"
                android:gravity="right">

            <ImageButton
                    style="@style/HorizontalButton"
                    android:id="@+id/shiftButton"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:background="@drawable/ic_action_forward"
                    android:layout_marginLeft="10dp"/>

            <ImageButton
                    style="@style/HorizontalButton"
                    android:id="@+id/repeatButton"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:background="@drawable/ic_action_refresh"
                    android:layout_marginLeft="10dp"/>

            <ImageButton
                    style="@style/HorizontalButton"
                    android:id="@+id/tickButton"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:background="@drawable/ic_action_done"
                    android:layout_marginLeft="10dp"/>

        </LinearLayout>
    </RelativeLayout>


    <LinearLayout
            android:id="@+id/tickButtonsView"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:padding="0dp"
            android:orientation="horizontal"
            android:visibility="gone">

        <Button style="@style/HorizontalButton" android:text="OK"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="Cancel"/>

    </LinearLayout>

    <LinearLayout
            android:id="@+id/repeatButtonsView"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:padding="0dp"
            android:orientation="horizontal"
            android:visibility="gone">

        <Button style="@style/HorizontalButton" android:text="day"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="weekday"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="week"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="month"/>

    </LinearLayout>

    <LinearLayout
            android:id="@+id/shiftButtonsView"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:padding="0dp"
            android:orientation="horizontal"
            android:visibility="gone">

        <Button style="@style/HorizontalButton" android:text="1 week"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="1 day"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="1 hour"/>
        <View style="@style/VerticalDivider"/>
        <Button style="@style/HorizontalButton" android:text="10 mins"/>

    </LinearLayout>
</LinearLayout>

我也在代码中设置了这个descendantFocusability,只是为了确定:

public class ReminderItemAdapter extends CursorAdapter {
    . . .

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        View v = mLayoutInflater.inflate(R.layout.reminder_item, parent, false);
        parent.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
        ((ViewGroup) v).setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
        return v;
    }

在我的ImageButton的样式上,我设置了focusable = false,只是为了好的衡量:

<resources>
    <style name="HorizontalButton">
        <item name="android:layout_width">0dip</item>
        <item name="android:layout_weight">1</item>
        <item name="android:layout_height">match_parent</item>
        <item name="android:fontFamily">sans-serif</item>
        <item name="android:textSize">12sp</item>
        <item name="android:background">?android:attr/selectableItemBackground</item>
        <item name="android:focusable">false</item>
        <item name="android:focusableInTouchMode">false</item>
    </style>
    . . .

单击列表项的任何部分(包括子TextView元素)时,我收到了onClick.但是,当单击任何ImageButtons时,单击不会被拾取.(顺便说一句,我已经在ImageButtons中注册了OnClickListeners,并且它们正在被调用.)

已设定:

• ListView上的setOnItemClickListener
• ListView上的setOnItemSelectedListener
• 每个ListView项上的setOnClickListener.

但是,如果单击其中一个ImageButton,则不会调用这些调用.

任何帮助,将不胜感激.

Answer 1

尝试在每个按钮布局中使用此功能

 android:focusable="false"
android:focusableInTouchMode="false"

并删除你正在为此做的其他事情.也来自listview.同时删除它

android:descendantFocusability="blocksDescendants"

这也是

parent.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
        ((ViewGroup) v).setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);