我有一个AsyncTask当前在登录时显示一个微调器对话框，但从用户的角度来看它并不能很好地工作，然后在完成时将所有内容旋转到第二个intent - 它看起来当你有一个好的信号但当信号不好或者从3G跳到wifi中句时它会起作用垃圾
如此。我想要的是一个登录页面，通过在提交点击时显示一个进度条对话框，只有在完成后才跳到第二个intent
这是我到目前为止所拥有的
package com.pprem.include;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
public class Include_CustomHttpClient {
/** The time it takes for our client to timeout */
public static final int HTTP_TIMEOUT = 30 * 1000; // milliseconds
/** Single instance of our HttpClient */
private static HttpClient mHttpClient;
/**
* Get our single instance of our HttpClient object.
*
* @return an HttpClient object with connection parameters set
*/
private static HttpClient getHttpClient() {
if (mHttpClient == null) {
mHttpClient = new DefaultHttpClient();
final HttpParams params = mHttpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
}
return mHttpClient;
}
/**
* Performs an HTTP Post request to the specified url with the
* specified parameters.
*
* @param url The web address to post the request to
* @param postParameters The parameters to send via the request
* @return The result of the request
* @throws Exception
*/
public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
BufferedReader in = null;
try {
HttpClient client = getHttpClient();
HttpPost request = new HttpPost(url);
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
}
finally {
if (in != null) {
try {
in.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static String executeHttpGet(String url) throws Exception {
BufferedReader in = null;
try {
HttpClient client = getHttpClient();
HttpGet request = new HttpGet();
request.setURI(new URI(url));
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
然后在实际活动中调用它
status="passed";
final class GetUserHttpTask
extends
AsyncTask<String/* Param */, Boolean /* Progress */, String /* Result */> {
@Override
protected String doInBackground(String... params) {
publishProgress(true);
try {
getUserPhpResponse = Include_CustomHttpClient.executeHttpPost(settings.getServer() + "getUser.php", postParameters);
return getUserPhpResponse;
} catch (Exception e) {
e.printStackTrace();
return "";
}
}
@Override
protected void onPostExecute(String getUserPhpResponse) {
publishProgress(false);
//result = result.replaceAll("\\s+","");
settings.setFullname(getUserPhpResponse);
JSONObject jObject;
try {
jObject = new JSONObject(getUserPhpResponse);
settings.setFullname(jObject.getString("fullname"));
settings.setAdministrator(jObject.getString("administrator"));
if (status=="passed"){
//start the second Activity
gotofrmListSchema.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
gotofrmListSchema.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(gotofrmListSchema);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
new GetUserHttpTask().execute();
答案 0 :(得分：0)
我认为你需要这样的东西
private class RemoteTask extends AsyncTask<Object, Void, String > {
private ProgressDialog dialog;
private Context context;
private RemoteTask(Context context) {
this.context = context;
this.dialog = new ProgressDialog(context);
}
@Override
protected void onPreExecute() {
dialog.setMessage(getResources().getString(R.string.loading));
dialog.show();
}
@Override
protected String doInBackground(Object... objects) {
return client.executeGet(objects[0]);
}
@Override
protected void onPostExecute(String result) {
if (dialog.isShowing())
dialog.dismiss();
...
//start new activity here
}
}