Question

我正在尝试在我的UI底部实现嵌套的ListView，但我的数组中只有一个项目正在填充屏幕。我已经发现，如果我设置了我的高度属性，我可以显示我的所有项目（即＆＃34; 175dp＆＃34;代替＆＃34; Wrap_Content＆＃34;）。问题是列表大小不是静态的，所以我需要在运行时调整ListView的高度。

我已经在互联网上挖掘了StackOverflow，但我似乎无法找到解决方案。

谢谢！

我片段中的代码：

for (int i = 0; i < values.length; ++i) {
    list.add(values[i]);
}

final StableArrayAdapter adapter = new StableArrayAdapter(rootView.getContext(),
        android.R.layout.simple_list_item_1, list);
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) rootView.findViewById(R.id.list_linear).getLayoutParams();
LinearLayout manager = (LinearLayout) rootView.findViewById(R.id.list_linear);
lp.height = 45 * values.length;
manager.setLayoutParams(lp);

listView.setAdapter(adapter);

我的XML：

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#BBDEFB"
android:padding="3dp"
android:id="@+id/movie_description_container">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="225dp"
    android:id="@+id/movie_detail_hero_image"
    android:layout_alignParentStart="true"
    android:layout_alignParentLeft="true"
    android:gravity="top"
    android:src="@drawable/sample_1"/>

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="movie title"
    android:id="@+id/movie_detail_title"
    android:layout_alignBottom="@+id/movie_detail_hero_image"
    android:backgroundTint="@color/background_floating_material_dark"
    android:textSize="36dp"
    android:textColor="#BBDEFB"
    android:background="#a3000000"
    android:layout_above="@id/movie_detail_hero_image"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_marginLeft="3dp"
    android:layout_marginRight="3dp"
    android:paddingLeft="18dp"/>

<ImageView
    android:layout_width="175dp"
    android:layout_height="215dp"
    android:id="@+id/movie_detail_poster"
    android:src="@drawable/sample_0"
    android:layout_below="@+id/movie_detail_title"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_margin="12dp"
    android:gravity="left"/>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="date"
    android:textSize="22dp"
    android:id="@+id/movie_detail_date"
    android:layout_centerVertical="true"
    android:layout_below="@id/movie_detail_hero_image"
    android:layout_alignRight="@+id/movie_detail_hero_image"
    android:layout_marginRight="12dp"
    android:layout_marginTop="32dp"/>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="Rating:"
    android:textSize="22dp"
    android:id="@+id/movie_detail_rating"
    android:layout_below="@+id/movie_detail_date"
    android:layout_alignRight="@+id/movie_detail_date"
    android:layout_alignEnd="@+id/movie_detail_date"
    android:layout_marginTop="6dp" />

<RatingBar
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/ratingBar"
    android:numStars="4"
    android:nestedScrollingEnabled="true"
    android:maxWidth="77dp"
    android:layout_below="@+id/movie_detail_rating"
    android:layout_alignRight="@+id/movie_detail_rating"
    android:layout_alignEnd="@+id/movie_detail_rating"
    android:layout_marginTop="3dp"/>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="Synopsis"
    android:id="@+id/movie_detail_synopsis_header"
    android:layout_below="@+id/movie_detail_poster"
    android:layout_alignLeft="@+id/movie_detail_poster"
    android:layout_alignStart="@+id/movie_detail_poster" />

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="description"
    android:id="@+id/movie_detail_synopsis"
    android:layout_below="@+id/movie_detail_synopsis_header"
    android:layout_alignLeft="@+id/movie_detail_synopsis_header"
    android:layout_alignStart="@+id/movie_detail_synopsis_header"
    android:layout_margin="6dp"/>

<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/imageButton_Favorite"
    android:layout_below="@+id/ratingBar"
    android:layout_alignRight="@+id/ratingBar"
    android:src="@drawable/ic_favorite_white_24dp"
    android:maxWidth="45dp"
    android:maxHeight="45dp"
    />

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/list_linear"
    android:layout_below="@id/movie_detail_synopsis">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="45dp"

        android:id="@+id/list_view2"/>
</LinearLayout>

Answer 1

实际上，您可以使用此方法将listview的高度设置为childers的大小

public static void setListViewHeightBasedOnChildren(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null)
        return;

    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(),
            MeasureSpec.UNSPECIFIED);
    int totalHeight = 0;
    View view = null;
    for (int i = 0; i < listAdapter.getCount(); i++) {
        view = listAdapter.getView(i, view, listView);
        if (i == 0)
            view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth,
                    LayoutParams.WRAP_CONTENT));

        view.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
        totalHeight += view.getMeasuredHeight();
    }
    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight
            + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
    listView.requestLayout();
}

在运行时更改ListView高度

1 个答案: