android ListView局部刷新和模拟应用下载 ListView 进度条下载 ListView多个下载
Demo下载 http://download.youkuaiyun.com/detail/menglele1314/9460510
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="vertical" >
<ListView
android:id="@+id/listview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:cacheColorHint="@android:color/transparent"
android:divider="@android:color/darker_gray"
android:dividerHeight="1dp"
android:listSelector="@android:color/transparent" />
</LinearLayout>
ListViewActivity.java
package com.download.demo.listview;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.ProgressBar;
import com.download.demo.R;
import com.download.demo.listview.TestListAdapter.MyClickListener;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.HttpHandler;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
public class ListViewActivity extends Activity {
private List<Bean> strList = new ArrayList<Bean>();
private ListView listView;
private TestListAdapter ListAdapter;
private HttpHandler<File> sHandler = null;
private HttpUtils http = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
for (int i = 0; i < 20; i++) {
strList.add(new Bean("testDemo" + i, true, 0));
}
listView = (ListView) findViewById(R.id.listview);
ListAdapter = new TestListAdapter(this, strList, mListener);
listView.setAdapter(ListAdapter);
}
int i = 0;
/**
* 实现类,响应按钮点击事件
*/
private MyClickListener mListener = new MyClickListener() {
@Override
public void myOnClick(int position, View v) {
download(position);
}
};
@Override
protected void onDestroy() {
if (null != sHandler) {
sHandler.cancel();
}
super.onDestroy();
}
public void download(final int position) {
strList.get(position).setDownload(true);
String path = this.getFilesDir().getAbsolutePath();
File file = new File(path, strList.get(position).getName());
if (file.exists()) {
file.delete();
}
http = new HttpUtils();
String url = "http://220.194.224.12/dd.myapp.com/16891/526EB7BDA5A8F4A4640E49B51F66D0B4.apk?mkey=56de6f924af9d42f&f=2484&fsname=com.zcycjy.mobile_1.0.5_5.apk&p=.apk";
sHandler = http.download(url, file.getPath().toString(), true, // 如果目标文件存在,接着未完成的部分继续下载。服务器不支持RANGE时将从新下载。
true, // 如果从请求返回信息中获取到文件名,下载完成后自动重命名。
new RequestCallBack<File>() {
@Override
public void onStart() {
}
@Override
public void onLoading(long total, long current,
boolean isUploading) {
double i = current / (double) total * 100;
int progress = (int) Math.ceil(i);
// mTasks.get(positionInAdapter).setDownload(true);
strList.get(position).setProgress(progress);
if (position >= listView.getFirstVisiblePosition()
&& position <= listView
.getLastVisiblePosition()) {
int positionInListView = position
- listView.getFirstVisiblePosition();
ProgressBar item = (ProgressBar) listView
.getChildAt(positionInListView)
.findViewById(R.id.download_pb);
item.setProgress(progress);
}
}
@Override
public void onFailure(HttpException arg0, String arg1) {
}
@Override
public void onSuccess(ResponseInfo<File> responseInfo) {
}
});
}
}
剩下的没代码你可以下载Demo看看