android 网络数据加载进度条

private ProgressDialog progressDialog = null;

private void DataLoad(){

progressDialog = ProgressDialog.show(this.getParent(), "请稍等...", "获取数据中...", true);

try{

//连接网络

}catch(){

}

Message msg_netData = new Message();
msg_netData.what = MESSAGETYPE;
handler.sendMessage(msg_netData);

}

private Handler handler = new Handler() {

@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
switch (msg.what) {
case MESSAGETYPE:
progressDialog.dismiss();
break;
}
}

};