上个月,google发布了自己的下拉刷新控件------SwipeRefreshLayout,该控件封装在android-support-v4.jar包中,依靠监听OnRefreshListener实现刷新操作。该控件用法十分简单,setEnable()方法控制刷新是否可用,setRefreshing()方法控制刷新进度条动画是否可用,由于是要实现下拉刷新,官方文档明确指出该控件所含有的一个直接子View必须是能够滚动的,如ListView、ScrollView等等。
要使用该控件,需要现在布局文件定义SwipeRefreshLayout控件,布局文件如下:
.support.v4.widget.SwipeRefreshLayout>
listView 的item布局文件:
主activity代码如下:
package com.example.android_test_swiperefreshlayout;
import java.util.ArrayList;
import android.os.Bundle;
import android.os.Handler;
import android.R.integer;
import android.app.Activity;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnRefreshListener
{
private SwipeRefreshLayout swipeLayout;
private ListView listView;
private ArrayList list;
private MyAdapter adapter;
private int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initData();
swipeLayout = (SwipeRefreshLayout) findViewById(R.id.swipe);
swipeLayout.setColorScheme(android.R.color.holo_blue_bright,
android.R.color.holo_green_light, android.R.color.holo_orange_light,
android.R.color.holo_red_light);
listView = (ListView) findViewById(R.id.list);
adapter = new MyAdapter();
listView.setAdapter(adapter);
swipeLayout.setOnRefreshListener(this);
}
public void initData()
{
list = new ArrayList();
for (int i = 0; i
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