Android ListView根据项数的大小自动改变高度

第一种: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);

第二种:直接使用当前界面尺寸,稍加调整

ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = getWindowManager().getDefaultDisplay().getHeight() – 30;
// Toast.makeText(this, params.height+"", 3000).show();
listView.setLayoutParams(params);

XML布局写法,请注意这里需要一个内部LinerLayout

<ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fadingEdge = "none"
        android:background="#FFF4F4F4"
        xmlns:android="http://schemas.android.com/apk/res/android"
        >
   <LinearLayout
    android:gravity="center_horizontal"
    android:orientation="vertical"
    android:background="#fff4f4f4"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ListView
        android:id="@+id/moreItemsListView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:cacheColorHint="#FFF4F4F4"
        android:dividerHeight="0.0dip"
        android:fadingEdge="none"
        />
   </LinearLayout>
</ScrollView>

第三种

public static void setListViewHeightBasedOnChildren(ListView listView, int attHeight) {  

        ListAdapter listAdapter = listView.getAdapter();   

        if (listAdapter == null) {  

            // pre-condition  

            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)) + attHeight;  

        listView.setLayoutParams(params);  

    }  

 

}