listview 嵌套在scrollview中 怎么动态加载数据

package com.example.listview;
2
3 import android.content.Context;
4 import android.util.AttributeSet;
5 import android.view.LayoutInflater;
6 import android.view.View;
7 import android.widget.ListView;
8 import android.widget.ProgressBar;
9 import android.widget.TextView;
10
11 /**
12 * Created by keranbin on 2015/10/25.
13 */
14 public class ZdyListView extends ListView {
15 private Context context;
16 private View footer;
17 private ProgressBar progressBar;
18 private TextView tv;
19
20 public ZdyListView(Context context) {
21 super(context);
22 init(context);
23 }
24 public ZdyListView(Context context, AttributeSet attrs) {
25 super(context, attrs);
26 init(context);
27 }
28 public ZdyListView(Context context, AttributeSet attrs, int defStyle) {
29 super(context, attrs, defStyle);
30 init(context);
31 }
32 private void init(Context context) {
33 this.context=context;
34 footer=LayoutInflater.from(context).inflate(R.layout.activity_footer, null);
35 this.addFooterView(footer);
36 progressBar=(ProgressBar) footer.findViewById(R.id.progressBar);
37 tv=(TextView) footer.findViewById(R.id.tv);
38 tv.setText("上拉加载更多");
39 }
40
41 //正在加载数据，将listview底部提示文字置为"正在加载中。。。。"
42 public void onLoading(){
43 progressBar.setVisibility(VISIBLE);
44 tv.setText("正在加载中。。。。");
45 }
46
47 //加载完毕，将listView底部提示文字改为"上拉加载更多"
48 public void LoadingComplete(){
49 progressBar.setVisibility(GONE);
50 tv.setText("上拉加载更多");
51 }
52
53
54 //重写onMeasure，解决scrollview与listview冲突
55 @Override
56 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
57 int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
58 MeasureSpec.AT_MOST);
59 super.onMeasure(widthMeasureSpec, expandSpec);
60 }
61
62