凌空ProgressDialog卡/冻结在时间获取大量的数据 [英] Volley ProgressDialog stuck/freeze at the time of get huge amount of data
问题描述
下面是我的code：
私人无效downloadSupplyTownData（最终诠释townId2）{ / *******************
*使用排球
******************* /
//发布PARAMS被发送到服务器
HashMap的＆LT;弦乐，对象＆gt; PARAMS =新的HashMap＆LT;弦乐，对象＆gt;（）;
params.put（ID，townId2）;
CustomDialogClass.showProgressDialog（上下文，真）;
JsonObjectRequest REQ =新JsonObjectRequest（Consts.baseUrl + Consts.townSupplyUrl，新的JSONObject（PARAMS）
新Response.Listener＆LT;＆JSONObject的GT;（）{
@覆盖
公共无效onResponse（JSONObject的响应）{
尝试{
totalConsumerRecords =的Integer.parseInt（response.getString（TotalConsumerRecords）修剪（））;
如果（totalConsumerRecords大于0）
{
/ **对于----- ** /
JSONArray dtrArray = response.getJSONArray（XXX）;
的for（int i = 0; I＆LT; dtrArray.length（）;我++）
{
JSONObject的dtrObj = dtrArray.getJSONObject（I）
supplyId1 =的Integer.parseInt（dtrObj.getString（SI））;
dtrId =的Integer.parseInt（dtrObj.getString（DI））;
dtrImgUrl = dtrObj.getString（DIMG）;
DTR code = dtrObj.getString（DC）;
assetP code = dtrObj.getString（APC）;
meterSN = dtrObj.getString（MSN）;
的System.out.println（dtrId）;
db.addDtrInfo（新DTRBeanClass（dtrId，supplyId1，DTR code，dtrImgUrl，assetP code，meterSN））;
} / **对于---- ** /
JSONArray poleArray = response.getJSONArray（极点）;
的for（int i = 0; I＆LT; poleArray.length（）;我++）
{
JSONObject的poleObj = poleArray.getJSONObject（I）
poleId =的Integer.parseInt（poleObj.getString（PI））;
dtrId1 =的Integer.parseInt（poleObj.getString（DI））;
consumerCount =的Integer.parseInt（poleObj.getString（ACA））;
poleImgUrl = poleObj.getString（PIMG）;
极code = poleObj.getString（PC）;
surveyerRemarks = poleObj.getString（RMS）;
的System.out.println（poleId）;
db.addPoleInfo（新PoleBeanClass（poleId，dtrId1，极code，poleImgUrl，consumerCount，surveyerRemarks））;
} / **对于---- ** /
JSONArray consumerArray = response.getJSONArray（供应）;
的for（int i = 0; I＆LT; consumerArray.length（）;我++）
{
JSONObject的supplyObj = consumerArray.getJSONObject（I）
supplyId =的Integer.parseInt（supplyObj.getString（SI））;
supplyTownId =的Integer.parseInt（supplyObj.getString（TI））;
supplyName = supplyObj.getString（SN）;
的System.out.println（supplyId）;
db.addSupplierInfo（新SupplierChainBeanClass（supplyId，supplyTownId，supplyName））;
} CustomDialogClass.showProgressDialog（背景下，FALSE）;
}
其他
{
CustomDialogClass.showProgressDialog（背景下，FALSE）;
} }赶上（JSONException E1）{
// TODO自动生成catch块
e1.printStackTrace（）;
}
}
}，新Response.ErrorListener（）{
@覆盖
公共无效onErrorResponse（VolleyError错误）{
NetworkResponse networkResponse = error.networkResponse;
VolleyLog.e（错误，error.getMessage（））;
Log.d（Eroor，+ networkResponse）;
CustomDialogClass.showProgressDialog（背景下，FALSE）;
}
}）; //添加请求对象到队列将要执行
。NameApplication.getInstance（）addToRequestQueue（REQ）;
}
在这里展示和 CustomDialogClass.showProgressDialog隐藏ProgressDialog（背景下，真正的）;
进度对话框旋前2-3秒，然后卡住。请帮我处理这个问题。
修改
/ **
*显示对话框
* * /
@覆盖
保护对话框onCreateDialog（INT ID）{
开关（ID）{
案例progress_bar_type：//我们设置它为0
pDialog =新ProgressDialog（本）;
pDialog.setMessage（下载文件，请稍候...）;
pDialog.setIndeterminate（假）;
pDialog.setMax（100）;
pDialog.setProgressStyle（ProgressDialog.STYLE_HORIZONTAL）;
pDialog.setCancelable（真）;
pDialog.show（）;
返回pDialog;
默认：
返回null;
}
}
/ **
*背景异步任务来下载文件
* * /
类DownloadFileFromURL扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; { / **
*启动后台线程之前
*显示进度条对话框
* * /
@覆盖
在preExecute保护无效（）{
super.on preExecute（）;
的ShowDialog（progress_bar_type）;
} / **
在后台线程下载*文件
* * /
@覆盖
保护字符串doInBackground（字符串... f_url）{
downloadSupplyTownData（townId）; 返回null;
} / **
*更新进度条
* * /
保护无效onProgressUpdate（字符串...进度）{
//设置进度百分比
pDialog.setProgress（的Integer.parseInt（进展[0]））;
} / **
*在完成后台任务之后
*辞退进度对话框
* ** /
@覆盖
保护无效onPostExecute（字符串FILE_URL）{
dismissDialog（progress_bar_type）; }}
和从视图中调用AsynchTask 新DownloadFileFromURL（）执行（）;
进度对话框旋前2-3秒，然后卡住了。
由于JSON响应的解析和
downloadConsumerData 方法实现从主UI线程API请求。在
排球onResponse方法调用作为在网络请求完成主UI线程回调方法。有关解析在
onResponse方法使用的AsyncTask类请求响应并调用ProgressDialog驳回onPostExecute方法方法，它会关闭ProgressDialog时凌空请求，JSON数据和分析downloadConsumerData 方法工作在后台线程中完成的。开始的AsyncTask从
onResponse方法：@覆盖
公共无效onResponse（JSONObject的响应）{
新DownloadFileFromURL（）执行（响应）;
}在
doInBackground处理JSON数据：@覆盖
保护字符串doInBackground（字符串... f_url）{
totalConsumerRecords =的Integer.parseInt（response.getString
（TotalConsumerRecords）修剪（））;
//此处添加所有code从onResponse
downloadSupplyTownData（townId）; 返回null;
}Here is my code:
private void downloadSupplyTownData(final int townId2) { /******************* * Using Volley *******************/ // Post params to be sent to the server HashMap<String, Object> params = new HashMap<String, Object>(); params.put("ID",townId2); CustomDialogClass.showProgressDialog(context,true); JsonObjectRequest req = new JsonObjectRequest(Consts.baseUrl+Consts.townSupplyUrl, new JSONObject(params), new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { try { totalConsumerRecords = Integer.parseInt(response.getString("TotalConsumerRecords").trim()); if(totalConsumerRecords>0) { /**For -----**/ JSONArray dtrArray = response.getJSONArray("xxx"); for(int i=0;i<dtrArray.length();i++) { JSONObject dtrObj = dtrArray.getJSONObject(i); supplyId1 = Integer.parseInt(dtrObj.getString("SI")); dtrId = Integer.parseInt(dtrObj.getString("DI")); dtrImgUrl = dtrObj.getString("DIMG"); dtrCode = dtrObj.getString("DC"); assetPCode = dtrObj.getString("APC"); meterSN = dtrObj.getString("MSN"); System.out.println(dtrId); db.addDtrInfo(new DTRBeanClass(dtrId,supplyId1,dtrCode,dtrImgUrl,assetPCode,meterSN)); } /**For ----**/ JSONArray poleArray = response.getJSONArray("Pole"); for(int i=0;i<poleArray.length();i++) { JSONObject poleObj = poleArray.getJSONObject(i); poleId = Integer.parseInt(poleObj.getString("PI")); dtrId1 = Integer.parseInt(poleObj.getString("DI")); consumerCount = Integer.parseInt(poleObj.getString("ACA")); poleImgUrl = poleObj.getString("PIMG"); poleCode = poleObj.getString("PC"); surveyerRemarks = poleObj.getString("RMS"); System.out.println(poleId); db.addPoleInfo(new PoleBeanClass(poleId,dtrId1,poleCode,poleImgUrl,consumerCount,surveyerRemarks)); } /**For ----**/ JSONArray consumerArray = response.getJSONArray("Supply"); for(int i=0;i<consumerArray.length();i++) { JSONObject supplyObj = consumerArray.getJSONObject(i); supplyId = Integer.parseInt(supplyObj.getString("SI")); supplyTownId = Integer.parseInt(supplyObj.getString("TI")); supplyName = supplyObj.getString("SN"); System.out.println(supplyId); db.addSupplierInfo(new SupplierChainBeanClass(supplyId,supplyTownId,supplyName)); } CustomDialogClass.showProgressDialog(context,false); } else { CustomDialogClass.showProgressDialog(context,false); } } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { NetworkResponse networkResponse = error.networkResponse; VolleyLog.e("Error: ", error.getMessage()); Log.d("Eroor", ""+networkResponse); CustomDialogClass.showProgressDialog(context,false); } }); // add the request object to the queue to be executed NameApplication.getInstance().addToRequestQueue(req); }Here show and hide ProgressDialog by
CustomDialogClass.showProgressDialog(context,true);Progress dialog spin first 2-3 seconds and then stuck. Please help me out to handle this.
EDIT
/** * Showing Dialog * */ @Override protected Dialog onCreateDialog(int id) { switch (id) { case progress_bar_type: // we set this to 0 pDialog = new ProgressDialog(this); pDialog.setMessage("Downloading file. Please wait..."); pDialog.setIndeterminate(false); pDialog.setMax(100); pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pDialog.setCancelable(true); pDialog.show(); return pDialog; default: return null; } }
/** * Background Async Task to download file * */ class DownloadFileFromURL extends AsyncTask<String, String, String> { /** * Before starting background thread * Show Progress Bar Dialog * */ @Override protected void onPreExecute() { super.onPreExecute(); showDialog(progress_bar_type); } /** * Downloading file in background thread * */ @Override protected String doInBackground(String... f_url) { downloadSupplyTownData(townId); return null; } /** * Updating progress bar * */ protected void onProgressUpdate(String... progress) { // setting progress percentage pDialog.setProgress(Integer.parseInt(progress[0])); } /** * After completing background task * Dismiss the progress dialog * **/ @Override protected void onPostExecute(String file_url) { dismissDialog(progress_bar_type); } }And from view call the AsynchTask
new DownloadFileFromURL().execute();解决方案Progress dialog spin first 2-3 seconds and then stuck.
Because parsing of json response and
downloadConsumerDatamethod making api request from main UI Thread.In
VolleyonResponsemethod called as callback method on main UI Thread when network request is completed.For parsing request response in
onResponsemethod useAsyncTaskclass and callProgressDialogdismiss method inonPostExecutemethod which will closeProgressDialogwhen Volley request, parsing of json data anddownloadConsumerDatamethod job is done in background ThreadStart AsyncTask from
onResponsemethod :@Override public void onResponse(JSONObject response) { new DownloadFileFromURL().execute(response); }In
doInBackgroundprocess JSON data:@Override protected String doInBackground(String... f_url) { totalConsumerRecords = Integer.parseInt(response.getString ("TotalConsumerRecords").trim()); // add all code here from onResponse downloadSupplyTownData(townId); return null; }
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