抛出OutOfMemoryError"pthread_create(1040KB堆栈)失败:重试".使用Volley进行异步发布时 [英] Throwing OutOfMemoryError "pthread_create (1040KB stack) failed: Try again" when doing asynchronous posts using Volley
问题描述
我正在使用Volley将存储在本地数据库中的某些数据发布到服务器.问题是当我有大量条目(例如500)时,出现此错误:
I'm using Volley to POST some data stored in a local database to a server. The problem is when I have a big number of entries (for example 500) I get this error:
java.lang.OutOfMemoryError: pthread_create (1040KB stack) failed: Try again
at java.lang.Thread.nativeCreate(Native Method)
at com.android.volley.RequestQueue.start(RequestQueue.java:141)
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66)
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66)
at mypackageName.SomeClass.upload(SomeClass)
at mypackageName.MyClass$MyThred.run(SomeClass.java:387)
这就是我从游标中检索数据并进行发布的方式
This is how I'm retrieving data from the cursor and doing the post
private class UploadDataThred extends Thread {
@Override
public void run() {
SomeSQLiteHelper someSQLiteHelper = new SomeSQLiteHelper(context);
someSQLiteHelper.getWritableDatabase();
Cursor result = someSQLiteHelper.getAllEvents();
DataUploader dataUploader = new DataUploader(context);
while (result.moveToNext()) {
Build.logError("We're looping!");
while (!waitingForResponse) {
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
dataUploader.upload(result.getString(0), false, result.getString(1), result.getString(2), result.getString(3), result.getString(4), result.getString(5), result.getString(6), result.getString(7), result.getString(8));
}
someSQLiteHelper.close();
}
}
这是我执行POST的方法
and this is my method that does the POST
public void upload(Some parameters go here) {
waitingForResponse = true;
VolleyLog.DEBUG = false;
final JSONObject o = new JSONObject();
o.put(Some data)
RequestQueue requestQueue = Volley.newRequestQueue(context);
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST, HOST, o, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
if (response.toString().contains("OK")) {
if (columnID != null) {
deleteSingleEntry(columnID);
}
waitingForResponse = false;
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
waitingForResponse = false;
}
}) {
/**
* Passing some request headers
* */
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json; charset=utf-8");
return headers;
}
};
requestQueue.add(jsonObjReq);
}
如果我在本地数据库中有400个条目,则工作正常,然后它会抛出该执行. 预先谢谢你.
It work's fine if I've got 400 entries in the local db and after that it throws that execption. Thank you in advance.
推荐答案
问题是我正在为每个请求创建一个新的RequestQueue.这就是我怀疑它引发OutOfMemory异常的原因.解决方案很简单:
The problem is I was creating a new RequestQueue for every request. That's the reason I suspect it was throwing the OutOfMemory Exception. The solution is simple:
而不是RequestQueue requestQueue = Volley.newRequestQueue(context);
仅在前一个为null的情况下,才在方法外部声明RequestQueue并添加新的RequestQueue.
declare the RequestQueue outside the method and add a new RequestQueue only if the previous one is null.
private RequestQueue requestQueue;
public void uploadData(String s) {
if (requestQueue == null) {
requestQueue = Volley.newRequestQueue(context);
Build.logError("Setting a new request queue");
} more request stuff....
}
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