// 更新指定item的数据
private void updateView(int index) {
int visiblePos = listView.getFirstVisiblePosition();
int offset = index - visiblePos;
// Log.e("", "index="+index+"visiblePos="+visiblePos+"offset="+offset);
// 只有在可见区域才更新
if (offset < 0) return;
View view = listView.getChildAt(offset);
final DownloadEntry entry = downloadEntries.get(index);
ViewHolder holder = (ViewHolder) view.getTag();
// Log.e("", "id="+app.id+", name="+app.name);
holder.statusText.setText(entry.toString());
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null || convertView.getTag() == null) {
convertView = LayoutInflater.from(ListActivity.this).inflate(R.layout.listview_item, null);
holder = new ViewHolder();
holder.downloadBtn = (Button) convertView.findViewById(R.id.download_btn);
holder.downloadBtn2 = (Button) convertView.findViewById(R.id.download_btn2);
holder.statusText = (TextView) convertView.findViewById(R.id.show_txt);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
final DownloadEntry entry = downloadEntries.get(position);
holder.statusText.setText(entry.toString());
holder.downloadBtn.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (entry.getStatus() == DownloadStatusLevel.IDLE.value()) {
DownloadManager.getInstance(ListActivity.this).add(entry);
} else if (entry.getStatus() == DownloadStatusLevel.DOWNLOADING.value()
|| entry.getStatus() == DownloadStatusLevel.WAITING.value()) {
DownloadManager.getInstance(ListActivity.this).pause(entry);
} else if (entry.getStatus() == DownloadStatusLevel.PAUSE.value()) {
DownloadManager.getInstance(ListActivity.this).resume(entry);
} else {
DownloadManager.getInstance(ListActivity.this).add(entry);
}
}
});
holder.downloadBtn2.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(ListActivity.this, DetailsActivity.class);
Bundle bundle = new Bundle();
bundle.putSerializable("bean", entry);
intent.putExtras(bundle);
startActivity(intent);
}
});
return convertView;
}
@Override
public void onDataChanged(DownloadEntry downloadEntry) {
int index = -1;
for (int i = 0; i <= downloadEntries.size() - 1; i++) {
if (downloadEntry.getUrl().equals(downloadEntries.get(i).getUrl())) {
downloadEntries.remove(i);
downloadEntries.add(i, downloadEntry);
index = i;
}
}
if (index != -1) adapter.updateView(index);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
pauseAllBtn = (Button) findViewById(R.id.pause_all_btn);
recoverAllBtn = (Button) findViewById(R.id.recover_all_btn);
listView = (ListView) findViewById(R.id.listview);
DownloadEntry entry = new DownloadEntry();
entry.setName("少年三国志.apk");
entry.setUrl("http://gh-game.oss-cn-hangzhou.aliyuncs.com/1435814701749842.apk");
downloadEntries.add(entry);
entry = new DownloadEntry();
entry.setName("放开那三国.apk");
entry.setUrl("http://gh-game.oss-cn-hangzhou.aliyuncs.com/1437641784268948.apk");
downloadEntries.add(entry);
entry = new DownloadEntry();
entry.setName("去吧皮卡丘.apk");
entry.setUrl("http://gh-game.oss-cn-hangzhou.aliyuncs.com/1437740158861375.apk");
downloadEntries.add(entry);
entry = new DownloadEntry();
entry.setName("X三国.apk");
entry.setUrl("http://gh-game.oss-cn-hangzhou.aliyuncs.com/1434794302961350.apk");
downloadEntries.add(entry);
entry = new DownloadEntry();
entry.setName("火影忍者-忍者大师.apk");
entry.setUrl("http://gh-game.oss-cn-hangzhou.aliyuncs.com/1435242602866100.apk");
downloadEntries.add(entry);
adapter = new DownloadAdapter();
listView.setAdapter(adapter);
pauseAllBtn.setOnClickListener(this);
recoverAllBtn.setOnClickListener(this);
}