API doc:http://developer.android.com/reference/android/support/v4/widget/SwipeRefreshLayout.html
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Google在support v4 19.1版本推出了一个下拉刷新组件SwipeRefreshLayout,使用起来方便,效果优美,但要注意的是其布局中只能有一个直接子布局。使用步骤如下:
1.在xml中,加载android.support.v4.widget.SwipeRefreshLayout
2.使用
package com.example.testswiperefreshlayout;
import android.os.Bundle;
import android.os.Handler;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends Activity implements OnRefreshListener {
private SwipeRefreshLayout mSwipeRefreshLayout;
private ListView mList;
@SuppressLint("InlinedApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mList = (ListView) findViewById(R.id.list);
mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.layout_containter);
mSwipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_light,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
mSwipeRefreshLayout.setOnRefreshListener(this);
}
@Override
public void onRefresh() {
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mSwipeRefreshLayout.setRefreshing(false);
mList.setAdapter(new MyAdapter());
}
}, 5000);
}
class MyAdapter extends BaseAdapter {
@Override
public int getCount() {
return 10;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View inflate = null;
TextView tvItem = null;
if (convertView == null) {
inflate = getLayoutInflater().inflate(R.layout.listview_item, null);
tvItem = (TextView) inflate.findViewById(R.id.tv_item);
inflate.setTag(tvItem);
} else {
inflate = convertView;
tvItem = (TextView) inflate.getTag();
}
tvItem.setText("下拉刷新item"+position);
return inflate;
}
}
}
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