为什么我无法运行＆＃34; HttpResponse response = client.execute（request）;＆＃34;在Async方法中（doInBackground）....因为每次我运行我的代码时，我总是会在它所说的位置出现错误＆＃34; HttpResponse response = client.execute（request）;＆＃34; .....是的，我已经包含了 - ＆＃34;
<小时/> These are the Logcat:
10-30 13:14:11.459: E/Trace(795): error opening trace file: No such file or directory (2)
10-30 13:14:11.950: D/dalvikvm(795): GC_FOR_ALLOC freed 101K, 8% free 2666K/2888K, paused 67ms, total 69ms
10-30 13:14:11.989: I/dalvikvm-heap(795): Grow heap (frag case) to 3.791MB for 1127536-byte allocation
10-30 13:14:12.110: D/dalvikvm(795): GC_FOR_ALLOC freed 2K, 6% free 3765K/3992K, paused 120ms, total 120ms
10-30 13:14:12.210: D/dalvikvm(795): GC_CONCURRENT freed <1K, 6% free 3785K/3992K, paused 10ms+7ms, total 100ms
10-30 13:14:12.489: D/libEGL(795): loaded /system/lib/egl/libEGL_emulation.so
10-30 13:14:12.489: D/(795): HostConnection::get() New Host Connection established 0x2a150a28, tid 795
10-30 13:14:12.561: D/libEGL(795): loaded /system/lib/egl/libGLESv1_CM_emulation.so
10-30 13:14:12.570: D/libEGL(795): loaded /system/lib/egl/libGLESv2_emulation.so
10-30 13:14:12.710: W/EGL_emulation(795): eglSurfaceAttrib not implemented
10-30 13:14:12.750: D/OpenGLRenderer(795): Enabling debug mode 0
10-30 13:14:13.000: I/Choreographer(795): Skipped 39 frames! The application may be doing too much work on its main thread.
10-30 13:14:21.529: D/dalvikvm(795): GC_CONCURRENT freed 41K, 4% free 4132K/4292K, paused 19ms+6ms, total 109ms
10-30 13:14:21.673: D/Testing(795): onCreateView(LayoutInflater inflater, viewGroup container, Bundle savedInstanceState
10-30 13:14:21.821: I/System.out(795): testing 12, testing 12
10-30 13:14:21.821: D/still inside the onCreateView()(795): Button testButton has initialised successfully
10-30 13:14:21.821: D/.......||(795): ||.........
10-30 13:14:21.821: V/TextView sTatusComment1= (TextView)v.findViewById(R.id.textView4);(795): ...
10-30 13:14:21.821: D/sTatusComment1.setText(Please enter option(795): success)
10-30 13:14:24.880: D/just entered(795): onClick(View v)
10-30 13:14:24.889: D/REST_code REST_obj:(795): initialised successfully!)
10-30 13:14:24.889: D/boolean invalidValue=true(795): initialised successfully!)
10-30 13:14:24.909: D/int executionOtion = 99;(795): initialised successfully!)
10-30 13:14:24.920: V/executionOption(795): 99
10-30 13:14:24.920: D/if (invalidValue==true) {(795): successfully!)
10-30 13:14:24.920: D/try clause(795): successfully!)
10-30 13:14:24.930: V/sTatus =(795): 3
10-30 13:14:24.930: D/......................(795): ....................
10-30 13:14:24.930: V/executionOption(795): 3
10-30 13:14:24.930: V/executionOption =(795): 3
10-30 13:14:24.930: D/OPTION 1 BYPASSED!!(795): successfully!)
10-30 13:14:24.930: D/executionOption == 99 else {(795): successfull
10-30 13:14:24.930: D/REST_object.oauth2Login()(795): BANG !!!!
10-30 13:14:24.930: D/if (executionOption >=2(795): BANG !!! BANG !!!
10-30 13:14:24.930: D/if (executionOption >=2(795): BANG !!! BANG !!! BANG !!
10-30 13:14:24.939: D/JUST BEFORE new CopyOfREST_code(executionOption);(795): TESTING
10-30 13:14:24.949: D/INSIDE(795): public CopyOfREST_code (int executionOption2)
10-30 13:14:24.949: D/JUST BEFORE(795): if( executionOption ==99)
10-30 13:14:24.949: D/INSIDE(795): } else {
10-30 13:14:24.949: D/_______________ Login _______________(795): _______________ Login _______________
10-30 13:14:24.949: I/System.out(795): _______________ Login _______________
10-30 13:14:24.959: D/_______________ Login _______________(795): _______________ Login _______________
10-30 13:14:24.989: I/System.out(795): Enviado: grant_type=password&username=demo@demo.com&password=passwordTOKEN&client_id=CONSUMER_KEY&client_secret=CONSUMER_SECRET
10-30 13:14:24.989: D/BEFORE >>(795): response = httpClient.execute(httpPost);
10-30 13:14:25.081: D/AndroidRuntime(795): Shutting down VM
10-30 13:14:25.081: W/dalvikvm(795): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
10-30 13:14:25.129: E/AndroidRuntime(795): FATAL EXCEPTION: main
10-30 13:14:25.129: E/AndroidRuntime(795): android.os.NetworkOnMainThreadException
10-30 13:14:25.129: E/AndroidRuntime(795): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
10-30 13:14:25.129: E/AndroidRuntime(795): at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
10-30 13:14:25.129: E/AndroidRuntime(795): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
10-30 13:14:25.129: E/AndroidRuntime(795): at java.net.InetAddress.getAllByName(InetAddress.java:214)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
10-30 13:14:25.129: E/AndroidRuntime(795): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
10-30 13:14:25.129: E/AndroidRuntime(795): at com.example.nettec.CopyOfREST_code.oauth2Login(CopyOfREST_code.java:244)
10-30 13:14:25.129: E/AndroidRuntime(795): at com.example.nettec.CopyOfREST_code.<init>(CopyOfREST_code.java:144)
10-30 13:14:25.129: E/AndroidRuntime(795): at com.example.nettec.FragmentTwo.onClick(FragmentTwo.java:247)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.view.View.performClick(View.java:4204)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.view.View$PerformClick.run(View.java:17355)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.os.Handler.handleCallback(Handler.java:725)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.os.Handler.dispatchMessage(Handler.java:92)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.os.Looper.loop(Looper.java:137)
10-30 13:14:25.129: E/AndroidRuntime(795): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-30 13:14:25.129: E/AndroidRuntime(795): at java.lang.reflect.Method.invokeNative(Native Method)
10-30 13:14:25.129: E/AndroidRuntime(795): at java.lang.reflect.Method.invoke(Method.java:511)
10-30 13:14:25.129: E/AndroidRuntime(795): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-30 13:14:25.129: E/AndroidRuntime(795): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-30 13:14:25.129: E/AndroidRuntime(795): at dalvik.system.NativeStart.main(Native Method)
10-30 13:14:25.279: D/dalvikvm(795): GC_CONCURRENT freed 141K, 6% free 4484K/4744K, paused 5ms+14ms, total 163ms
-------------------------------------------------------------
Below is the ASYNC CLASS CODE:
package com.example.nettec;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.app.ProgressDialog;
import android.os.AsyncTask;
public class REST_code2 extends AsyncTask<String, String, HttpResponse >{
//---------Credentials----------
//Credentials providing access to a specific Salesforce organization.
private static final String userName = "gelsonmascarenhas@hotmail.com"; // COPY USERNAME
private static final String password = "********567890iuBQsLVoX5Uhbe3vJFfjsKlEj"; // COPY PASSWORD AND TOKEN
//---------REST and OAuth-------
//Portions of the URI for REST access that are re-used throughout the code
private static String OAUTH_ENDPOINT = "/services/oauth2/token";
private static String REST_ENDPOINT = "/services/data";
//Holds URI returned from OAuth call, which is then used throughout the code.
String baseUri;
//The oauthHeader set in the oauth2Login method, and then added to
//each HTTP object that is used to invoke the REST API.
Header oauthHeader;
//Basic header information added to each HTTP object that is used
//to invoke the REST API.
Header prettyPrintHeader = new BasicHeader("X-PrettyPrint", "1");
//----------Data specific---------
//Retrieved accountId that is used when contact is added.
private static String accountId;
//Id of inserted contact. Used to update contact.
private static String contactId;
//----------Utility-------------
//Used to get input from console.
private static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ProgressDialog dialog;
private View host; //view to be initialised on the constructor of this class
TextView sTatusComment1;
/* Frament variable identifiers */
private static Boolean authentication;
private static int executionChoice;
//........TO BE DELETED ...........//
View view_inflater_const;
/**
* This class holds all the values related to the credentials needed to
* make the OAuth2 request for authentication. Normally they would not be set in
* this manner.
*/
class UserCredentials {
String loginInstanceDomain = "na15.salesforce.com"; // COPY YOUR SERVER INSTANCE
String apiVersion = "27"; // COPY YOU API VERSION
String userName = REST_code2.userName;
String password = REST_code2.password;
String consumerKey = "3MVG9A2kN3Bn17htllMZ507EvCBOeX8Qfq6sV5vA3HZs6MVowf7CB04msHqmdkXHrYEVsdciASN8Uoz2cj.U."; // COPY YOUR CONSUMER KEY
String consumerSecret = "3783326479037458971"; // COPY YOUR CONSUMER SECRET
String grantType = "password";
}
/**
* Constructor drives console interaction and calls appropriate methods.
*/
public REST_code2(View host) {
//showMenu();// FragmentTwo Invoke
this.host = host; // host is variable of type View
}
protected void SetStatusCommand(int executionOption ){
executionChoice= executionOption;
}
protected void setAuthentication(boolean A){
authentication = A;
}
protected int getexecutionChoice(){
return executionChoice;
}
protected boolean getauthenticationStat(){
return authentication;//boolean
}
/**
* This method connects the program to the Salesforce organization using OAuth.
* It stores returned values for further access to organization.
* @param userCredentials Contains all credentials necessary for login
* @return
*/
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
}
@Override/
protected HttpResponse doInBackground(String ... params){
OAuth2Response oauth2Response = null;
HttpResponse response = null;
UserCredentials userCredentials = new UserCredentials();
String loginHostUri = "https://" + userCredentials.loginInstanceDomain + OAUTH_ENDPOINT;
if(getauthenticationStat()==false)
{
try {
//Construct the objects for making the request
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(loginHostUri);
StringBuffer requestBodyText = new StringBuffer("grant_type=password");
requestBodyText.append("&username=");
requestBodyText.append(userCredentials.userName);
requestBodyText.append("&password=");
requestBodyText.append(userCredentials.password);
requestBodyText.append("&client_id=");
requestBodyText.append(userCredentials.consumerKey);
requestBodyText.append("&client_secret=");
requestBodyText.append(userCredentials.consumerSecret);
Log.d("Enviado: ", requestBodyText.toString());
///////System.out.println("Enviado: "+requestBodyText.toString());
StringEntity requestBody = new StringEntity(requestBodyText.toString());
Log.d("StringEntity requestBody = new StringEntity(requestBodyText.toString()); ", requestBodyText.toString());
requestBody.setContentType("application/x-www-form-urlencoded");
Log.d("requestBody.setContentType( ", "application/x-www-form-urlencoded");
httpPost.setEntity(requestBody);
Log.d("httpPost.setEntity(requestBody); ", "<-------");
httpPost.addHeader(prettyPrintHeader);
Log.d("httpPost.addHeader(prettyPrintHeader); ", "<-------");
response = httpClient.execute(httpPost);
if ( response.getStatusLine().getStatusCode() == 200 ) {
Log.d("if ( response.getStatusLine().getStatusCode() == 200 ) {", "<--------");
String response_string = EntityUtils.toString(response.getEntity());
Log.d("String response_string =", "EntityUtils.toString(response.getEntity());");
try {
Log.d("entered try{", "<--------");
JSONObject json = new JSONObject(response_string);
oauth2Response = new OAuth2Response(json);
Log.d("JSON returned by response +/n: ", json.toString(1));
publishProgress("JSON returned by response +/n: ", json.toString(1));
//System.out.println("JSON returned by response: +\n" + json.toString(1));
} catch (JSONException je) {
je.printStackTrace();
}
baseUri = oauth2Response.instance_url + REST_ENDPOINT + "/v" + userCredentials.apiVersion +".0";
oauthHeader = new BasicHeader("Authorization", "OAuth " + oauth2Response.access_token);
Log.d("\nSuccessfully logged in to instance: " , baseUri );
}
else {
Log.d("An error has occured. Http status: " , "there is suppost to be an int variable, go and check");
//System.out.println("An error has occured. Http status: " + response.getStatusLine().getStatusCode()); //@+id/textView4
//System.out.println(getBody(response.getEntity().getContent())); //@+id/textView4
System.exit(-1);
}
} /*end of try */
catch (UnsupportedEncodingException uee) {
uee.printStackTrace();
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (NullPointerException npe) {
npe.printStackTrace();
}
}
return response; }
CODE THAT INVOKES THE ASYNC I had to remove all the imports in this class to save charater cout space:
package com.example.nettec;
public class FragmentTwo extends Fragment implements View.OnClickListener{
View view_inflater_const;
ViewGroup container_const;
Bundle savedInstanceState_const;
private static String accountId="empty";
private static String contactId;
ImageView ivIcon;
TextView tvItemName;
Button Button_Ok;
View GlobalView;
EditText sTatus;
String String_sTatus;
TextView sTatusComment1;
public static final String IMAGE_RESOURCE_ID = "iconResourceID";
public static final String ITEM_NAME = "itemName";
public static final String BUTTON_OK = "button_OK";
public View RetrieveView(){
return GlobalView;
}
public void storeView(View v){
GlobalView= v;
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.d("Testing", "onCreateView(LayoutInflater inflater, viewGroup container, Bundle savedInstanceState");
View view = inflater.inflate(R.layout.fragment_layout_two, container,
false);
storeView(view);
Button testButton = (Button) view.findViewById(R.id.button1);
Log.d("still inside the onCreateView()", " Button testButton has initialised successfully");
sTatusComment1= (TextView) view.findViewById(R.id.textView4);
Log.v("TextView sTatusComment1= (TextView)v.findViewById(R.id.textView4); ",(String)sTatusComment1.getText().toString());
sTatusComment1.setText("Please enter option :");
Log.d("sTatusComment1.setText(Please enter option "," success)");
testButton.setOnClickListener(this);
ivIcon=(ImageView)view.findViewById(R.id.frag2_icon);
tvItemName = (TextView) view.findViewById(R.id.frag2_text);
tvItemName.setText(getArguments().getString(ITEM_NAME));
ivIcon.setImageDrawable(view.getResources().getDrawable(
getArguments().getInt(IMAGE_RESOURCE_ID)));
return view;
}
public void onActivityCreated(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
sTatusComment1= (TextView) getActivity().findViewById(R.id.textView1);
}
public void changeText(String data){
sTatusComment1.setText(data);
}
@Override
public void onClick(View v) {
Log.d("just entered"," onClick(View v)");
v=RetrieveView();
REST_code REST_obj = new REST_code(v);
REST_code2 REST_obj2 = new REST_code2(v);
sTatus= (EditText) v.findViewById(R.id.editText1);
Log.d("REST_code REST_obj: "," initialised successfully!)");
boolean invalidValue = true;
Log.d("boolean invalidValue=true "," initialised successfully!)");
int executionOption=99;
if (invalidValue==true) {
Log.d("if (invalidValue==true) { "," successfully!)");
try {
Log.d("try clause "," successfully!)");
String quickVar = sTatus.getText().toString();
Log.v("sTatus = ",quickVar);///THERE IS SOMETHING WRONG WITH THIS
sTatus = (EditText)v.findViewById(R.id.editText1);//pass the value of editText1 to var sTatus String
executionOption = Integer.parseInt(sTatus.getText().toString()); //convert the var sTatus string to int and assign to executionOption var
Log.v("executionOption ",String.valueOf(executionOption));
String quickcheck= (String)sTatus.getText().toString();
Log.v("executionOption = ",quickcheck);
if ((executionOption < 1 || executionOption > 4) && executionOption!=99) {
Log.d("inside if ((executionOption <1 || ","executionOption > 4) && executionOption!=99");
Log.d("Please enter ", " 1, 2, 3, 4, or 99.\n"); //@+id/textView2
sTatusComment1.setText("Enter the number of the sample to run: ");//variable that will hold answer @+id/editText1 --FragmentTwo invoke
refresh_frag(); //FragmentTwo Invoke
} else {
Log.d(" OPTION 1 BYPASSED!! " , " successfully!)");
invalidValue = false;
}
}
catch (Exception e) {
Log.d("catch (Exception e) {"," initialised successfully!)");
sTatusComment1.setText("Enter the number of the sample to run: "); // @+id/editText1
}
}
if (executionOption == 99) {
Log.d("if (executionOption ==99 ",") { successful");
sTatusComment1.setText("No action taken");//@+id/textView4
} else {
//NO CODE YET
if (executionOption >= 2) {
//NO CODE YET
}
if (executionOption >= 3) {
Log.v("inside executionOption ", ">=3 ");
if (accountId != null) {
//new CopyOfREST_code(executionOption);
REST_obj2.execute();
//REST_obj.execute();
} else {
}
}
if (executionOption == 4) {
if (contactId != null) {
new CopyOfREST_code(executionOption);
//REST_obj.restPatchExample(contactId);
} else {
sTatusComment1.setText("contact not found");
}
}
}
}
}
答案 0 :(得分：0)
您的logcat显示您实际使用的代码中的 ，CopyOfREST_code.java（您似乎从未发布过）您正在执行网络操作（特别是对{{1的调用） }}）在初始化程序中。
虽然AsyncTask的oauth2Login()方法在UI线程上运行，但是类的初始化在UI线程上运行，这意味着您无法在那里进行网络操作。
在doInBackground()。