listview的高度比列表项高三倍,将listview的剩余空间留在android的底部

时间:2013-11-20 07:06:52

标签: android listview

我的listview在设计方面存在问题,因为它让我在底部留出一些额外的空间,实际问题是我在一个活动中使用多个listviews,然后控制每个listview的高度使用此代码: -

public static void setListViewHeightBasedOnChildren(ListView listView,Context c) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
        // pre-condition
        return;
    }

    int totalHeight = 0;
    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
    for (int i = 0; i < listAdapter.getCount(); i++) {
        View listItem = listAdapter.getView(i, null, listView);
        if (listItem instanceof ViewGroup) 
            listItem.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
        totalHeight += listItem.getMeasuredHeight();
      //  Toast.makeText(c, "height:-"+totalHeight, 0).show();

    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    Toast.makeText(c, "height:-"+ params.height, 0).show();

    listView.setLayoutParams(params);
    listView.requestLayout();
}

它工作正常,当我从json在线加载数据时,但是当我从sqlite数据库离线使用我的数据时,它将listview的高度不必要地增加到项目高度的三倍,我用Google搜索了很多,但没有得到任何东西,如果有人有一些想法,请告诉我,我可以解释一下。

<LinearLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:orientation="vertical" >

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="Breaking News"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="fill_parent" >

                        <ListView
                            android:id="@android:id/list"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:adjustViewBounds="true"
                            android:background="@color/white" />

                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_horizontal"
                            android:background="#F45555"
                            android:text="Top Stories"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:orientation="vertical" >

                        <ListView
                            android:id="@+id/list2"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:background="@color/white" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="match_parent"
                            android:layout_gravity="center_horizontal"
                            android:background="#F45555"
                            android:text="City"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="match_parent"
                        android:orientation="vertical" >

                        <ListView
                            android:id="@+id/list3"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:background="@color/white" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="News"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="match_parent"
                        android:orientation="vertical" >

                        <ListView
                            android:id="@+id/list4"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:background="@color/white" >
                        </ListView>
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="Kashmir"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="match_parent"
                        android:orientation="vertical" >

                        <ListView
                            android:id="@+id/list5"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:background="@color/white" >
                        </ListView>
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:background="#F45555" >

                        <TextView
                            android:id="@+id/category1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:background="#F45555"
                            android:text="Jammu"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:textColor="@color/white"
                            android:textSize="16dp"
                            android:textStyle="bold" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="fill_parent"
                        android:layout_height="match_parent"
                        android:orientation="vertical" >

                        <ListView
                            android:id="@+id/list6"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_alignParentTop="true"
                            android:background="@color/white" />
                    </LinearLayout>
                </LinearLayout>

2 个答案:

答案 0 :(得分:0)

试试这个:

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

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Breaking News"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_weight="1" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:background="@color/white" />
</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:background="#F45555"
        android:text="Top Stories"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/list2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" />
</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:background="#F45555"
        android:text="City"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/list3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" />
</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="News"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />

</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/list4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" >
    </ListView>
</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Kashmir"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />

</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/list5"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" >
    </ListView>
</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="#F45555" >

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:background="#F45555"
        android:text="Jammu"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="@color/white"
        android:textSize="16dp"
        android:textStyle="bold" />

</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/list6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:background="@color/white" />
</LinearLayout>

答案 1 :(得分:0)

请调试从遥控器获取的数据。它包含额外的空格。