Question

我有一个listview项目的布局，但它显示不正确（书籍描述超过了上次更新日期）。你能帮我解决一下吗？

如果我设置

 android:layout_above="@+id/lastUpdatedDt"

到bookDescr项目，整个文本消失......

编辑：我已根据评论

更新了样本

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

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:descendantFocusability="blocksDescendants"
    android:layout_margin="10dp"
    android:background="@drawable/big_card_details"
    android:clickable="true"
    android:focusable="false">

<CheckBox
    android:id="@+id/icon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    style="?android:attr/starStyle"
    android:layout_marginTop="10dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_marginLeft="10dp" />

    <TextView
        android:id="@+id/bookTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Book title"
        android:textSize="16sp"
        android:layout_alignBaseline="@id/icon"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@id/icon" />

    <TextView
        android:id="@+id/bookSize"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:text="470k"
        android:layout_alignBaseline="@id/icon"
        android:textSize="16sp"
        android:layout_alignParentRight="true"
        android:layout_marginRight="10dp" />

<TextView
    android:id="@+id/lastUpdatedDt"
    android:layout_width="match_parent"
    android:layout_height="26dip"
    android:singleLine="true"
    android:text="Updated 27.04.2014 17.10"
    android:textSize="12sp"

    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentBottom="true"
    android:layout_alignLeft="@id/icon" />
<TextView
        android:id="@+id/bookDescription"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:singleLine="false"
    android:textSize="10sp"
    android:text="here should be long description"
    android:layout_alignEnd="@id/bookSize"
    android:layout_below="@+id/bookTitle"
    android:layout_marginTop="20dp"
    android:layout_alignLeft="@+id/icon" />



    <!-- this is the button that will trigger sliding of the expandable view -->

    <ImageButton
        android:id="@+id/expand_details_button"
        android:src="@drawable/slide_button_details"
        android:layout_alignTop="@id/lastUpdatedDt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@null"
        android:layout_alignBaseline="@id/lastUpdatedDt"
        android:layout_alignParentBottom="true"
        android:layout_alignRight="@id/bookSize"
        android:layout_alignEnd="@id/bookSize" />

    </RelativeLayout>

<!-- this is the expandable view that is initially hidden and will slide out when the more button is pressed -->
<LinearLayout
    android:id="@+id/details_expandable"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:baselineAligned="false"
    android:orientation="horizontal"
    >
    <!-- put whatever you want in the expandable view -->
    <Button
        android:layout_width="match_parent"
        android:layout_weight="0.3"
        android:drawableTop="@drawable/ic_action_read"
        android:text="@string/ReadBook"
        style="@style/SlideButtonTheme" />
    <Button
        android:layout_width="match_parent"
        android:layout_weight="0.3"
        android:drawableTop="@drawable/ic_action_open_browser"
        style="@style/SlideButtonTheme"
        android:text="@string/OpenInBrowser" />

</LinearLayout>
</LinearLayout>

Answer 1

希望您知道RelativeLayout中的子视图需要放置below/above any of the sibling views或aligned from the parent。

问题在于lastUpdatedDt为aligned to parent bottom，因为父RelativeLayout高度设置为wrap_content高度将根据子视图决定，因此lastUpdatedDt位于底部取决于父级高度，它与兄弟视图重叠。

FIX：只需为android:layout_below="@+id/bookDescription" lastUpdatedDt设置TextView，这样lastUpdatedDt将始终位于父级的底部，低于bookDescription TextView兄弟。

请更正RelativeLayout用法

1 个答案: