如何在线性布局中将 TextView 定位在 ListView 上方

Question

我试图在线性布局中将 TextView 放置在 ListView 上方，但我很快就无处可去。我已经尝试将电视放置在它自己的布局中，我已经尝试为LV 的顶部，但似乎没有任何效果。电视似乎有某种不可移动的填充物。？请查看屏幕截图和下面的 .XML

设计视图布局

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:id="@+id/setting_frag"
    android:baselineAligned="false">


<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="hello"/>

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="2"
        android:background="?attr/colorBackgroundFloating"
        android:descendantFocusability="blocksDescendants" />


    <RelativeLayout
        android:id="@+id/setting_dialogue"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1">
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/device_info_stub"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/device_info"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/health_check_stub"
            android:inflatedId="@+id/health_check_stub_inflated_id"
            android:layout="@layout/health_checks"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/system_config_stub"
            android:inflatedId="@+id/system_config_stub_inflated_id"
            android:layout="@layout/system_configuration"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/database_stats_stub"
            android:inflatedId="@+id/database_stats_stub_inflated_id"
            android:layout="@layout/database_stats"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/check_update_stub"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/device_info"
            />

    </RelativeLayout>

Screenshot

New screenshot

Answer 1

将android:orientation="horizontal"更改为android:orientation="vertical"

如您希望您的列表和相关存根并排使用以下代码。

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/setting_frag"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:baselineAligned="false"
    android:orientation="horizontal">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="2"
        android:baselineAligned="false"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#F00"
            android:textColor="@color/white"
            android:text="hello" />


        <ListView
            android:id="@+id/lv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#0F0"
            android:descendantFocusability="blocksDescendants" />
    </LinearLayout>

    <RelativeLayout
        android:id="@+id/setting_dialogue"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#00F"
        android:layout_weight="1">

        <ViewStub
            android:id="@+id/device_info_stub"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/activity_burst_assignees" />

        <ViewStub
            android:id="@+id/health_check_stub"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inflatedId="@+id/health_check_stub_inflated_id"
            android:layout="@layout/activity_burst_assignees" />

        <ViewStub
            android:id="@+id/system_config_stub"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inflatedId="@+id/system_config_stub_inflated_id"
            android:layout="@layout/activity_burst_assignees" />

        <ViewStub
            android:id="@+id/database_stats_stub"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inflatedId="@+id/database_stats_stub_inflated_id"
            android:layout="@layout/activity_burst_assignees" />

        <ViewStub
            android:id="@+id/check_update_stub"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/activity_burst_assignees" />

    </RelativeLayout>


</LinearLayout>

代码的输出将如下所示

Answer 2

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:weight_sum ="11"
    android:id="@+id/setting_frag"
    android:baselineAligned="false">


<TextView
    android:layout_width="wrap_content"
    android:layout_height="0dp"
    android:text="hello"
    android:layout_weight="2"/>

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="5"
        android:background="?attr/colorBackgroundFloating"
        android:descendantFocusability="blocksDescendants" />


    <RelativeLayout
        android:id="@+id/setting_dialogue"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="4">
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/device_info_stub"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/device_info"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/health_check_stub"
            android:inflatedId="@+id/health_check_stub_inflated_id"
            android:layout="@layout/health_checks"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/system_config_stub"
            android:inflatedId="@+id/system_config_stub_inflated_id"
            android:layout="@layout/system_configuration"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/database_stats_stub"
            android:inflatedId="@+id/database_stats_stub_inflated_id"
            android:layout="@layout/database_stats"
            />
        <ViewStub
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/check_update_stub"
            android:inflatedId="@+id/device_info_stub_inflated_id"
            android:layout="@layout/device_info"
            />

    </RelativeLayout>

我已经做了修改。这对你有用。

如何在线性布局中将 TextView 定位在 ListView 上方

How to position a TextView above ListView inside Linear Layout

android

android-linearlayout