Question

android设置布局 大小

在可视化里面拉动不是太大就是太小。。太难弄了
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/imageView2"
android:layout_marginTop="60dp"
android:orientation="vertical" >

<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>

</LinearLayout>
主要是想设置listview的大小

Answer 1

按照listview的项数确定高度

ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
return;
}

int totalHeight = 0;
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0);
totalHeight += listItem.getMeasuredHeight();
}

ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() – 1));
((MarginLayoutParams)params).setMargins(10, 10, 10, 10);
listView.setLayoutParams(params);

Answer 2

可以再代码中定义listview的大小，动态设置显示大小，根据分辨率设置。

Answer 3

可以使用布局嵌套：
<LinearLayout
android:orientation="vertical">

<LinearLayout
android:layout_weight="1"
android:orientation="vertical">

</LinearLayout>

<LinearLayout
android:layout_weight="1"
android:orientation="vertical">

<ListView
/>
</LinearLayout>
</LinearLayout>

用android:layout_weight="1" 设置权重

Answer 4

<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="333px" >
</ListView>