android– 只有创建视图层次结构的原始线程才能触及其视图异常

概述参见英文答案>Android“Onlytheoriginalthreadthatcreatedaviewhierarchycantouchitsviews.”                                    22个我对这个类有一个例外：“只有创建视图层次结构的原始线程才能触及它的视图”.我知道这

参见英文答案 > Android “Only the original thread that created a view hierarchy can touch its views.”                                    22个
我对这个类有一个例外：“只有创建视图层次结构的原始线程才能触及它的视图”.

我知道这可能是我使用异步的事实,但我是androID dev中的新手,我甚至没有安排它甚至在Stackoverflow上阅读其他案例.欢迎帮助！

我的课：

 package com.test.example;    import java.util.ArrayList;    import java.util.HashMap;    import org.Json.JsONArray;    import org.Json.JsONException;    import org.Json.JsONObject;    import androID.app.Activity;    import androID.app.ListActivity;    import androID.app.ProgressDialog;    import androID.content.Intent;    import androID.os.AsyncTask;    import androID.os.Bundle;    import androID.util.Log;    import androID.vIEw.VIEw;    import androID.Widget.AdapterVIEw;    import androID.Widget.AdapterVIEw.OnItemClickListener;    import androID.Widget.Imagebutton;    import androID.Widget.listadapter;    import androID.Widget.ListVIEw;    import androID.Widget.SimpleAdapter;    import androID.Widget.TextVIEw; public class ShopsActivity extends Activity {    private ProgressDialog pDialog;    // URL to get contacts JsON    private static String url = "mywebserviceurl";    // JsON Node names    private static final String TAG_name = "shop_name";private static final String TAG_ADDRESS_STRING = "shop_address";TextVIEw shop_address;TextVIEw shop_name;TextVIEw API;private ListVIEw List;private Imagebutton button1;private Imagebutton button2;private Imagebutton button3;private Imagebutton button4;    // contacts JsONArray    JsONArray contacts = null;    // Hashmap for ListVIEw    ArrayList<HashMap<String, String>> osList = new ArrayList<HashMap<String, String>>();    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_shops);        // Calling async task to get Json        new GetJson().execute();    }    /**     * Async task class to get Json by making http call     * */    private class GetJson extends AsyncTask<VoID, VoID, VoID> {        @OverrIDe        protected voID onPreExecute() {            super.onPreExecute();            // Showing progress dialog            pDialog = new ProgressDialog(ShopsActivity.this);            pDialog.setMessage("Mise à jour...");            pDialog.setCancelable(false);            pDialog.show();        }        @OverrIDe        protected VoID doInBackground(VoID... arg0) {            // Creating service handler class instance            ServiceHandler sh = new ServiceHandler();            // Making a request to url and getting response            String JsonStr = sh.makeServiceCall(url, ServiceHandler.GET);            Log.d("Response: ", "> " + JsonStr);            JsONArray array = null;            try {                array = new JsONArray(JsonStr);            } catch (JsONException e1) {                // Todo auto-generated catch block                e1.printstacktrace();            }            try {                for (int i = 0; i <array.length(); i++){                JsONObject JsonObject = array.getJsONObject(i);                String ID = JsonObject.getString("ID");                 System.out.println("ID --->" + ID);                 String url = JsonObject.getString("url");                 System.out.println("url --->" + url);                 String created_at = JsonObject.getString("created_at");                 System.out.println("created_at --->" + created_at);                 String updated_at = JsonObject.getString("updated_at");                 System.out.println("updated_at --->" + updated_at);                 String name = JsonObject.getString("name");                     System.out.println("name --->" + name);                 JsONArray photos_urls = JsonObject.getJsONArray("photos_urls");                 System.out.println("photos_urls --->" + photos_urls);                 String address_string = JsonObject.getString("address_string");                 System.out.println("address_string --->" + address_string);                 JsONObject booklet = JsonObject.getJsONObject("booklet");                 String ID_booklet = booklet.getString("ID");                 System.out.println("ID_booklet --->" + ID_booklet);                 String url_booklet = booklet.getString("url");                 System.out.println("url_booklet --->" + url_booklet);                 String created_at_booklet = booklet.getString("created_at");                 System.out.println("created_at_booklet --->" + created_at_booklet);                 String updated_at_booklet = booklet.getString("updated_at");                 System.out.println("updated_at_booklet --->" + updated_at_booklet);                 String document_url = booklet.getString("document_url");                 System.out.println("document_url --->" + document_url);                 String presented = booklet.getString("presented");                 System.out.println("presented --->" + presented);             // Adding value HashMap key => value                        HashMap<String, String> map = new HashMap<String, String>();                        map.put(TAG_name, name);                        map.put(TAG_ADDRESS_STRING, address_string);                        osList.add(map);                        List=(ListVIEw)findVIEwByID(R.ID.List);                        listadapter adapter = new SimpleAdapter(ShopsActivity.this, osList,                                R.layout.ListvIEw_item_row,                                new String[] { TAG_name, TAG_ADDRESS_STRING }, new int[] {                                        R.ID.name_shop, R.ID.address_shop});                        List.setAdapter(adapter);                        /*  List.setonItemClickListener(new AdapterVIEw.OnItemClickListener() {                            @OverrIDe                            public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEw,                                                    int position, long ID) {                                Intent intent = new Intent(ShopsActivity.this, ShopActivity.class);                                startActivity(intent);                                overrIDePendingTransition(R.anim.animationin, R.anim.animationout);                            }                            });*/                        }                } catch (JsONException e) {                    e.printstacktrace();            }             return null;    }        @OverrIDe        protected voID onPostExecute(VoID result) {            super.onPostExecute(result);            // dismiss the progress dialog            if (pDialog.isShowing())                pDialog.dismiss();        }    }}

这是我尝试使用onPostExecute后的日志：

12-30 14:10:28.515: E/AndroIDRuntime(12951): FATAL EXCEPTION: AsyncTask #112-30 14:10:28.515: E/AndroIDRuntime(12951): java.lang.RuntimeException: An error occured while executing doInBackground()12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.os.AsyncTask.done(AsyncTask.java:299)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.FutureTask.setException(FutureTask.java:124)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.os.AsyncTask$SerialExecutor.run(AsyncTask.java:230)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.lang.Thread.run(Thread.java:856)12-30 14:10:28.515: E/AndroIDRuntime(12951): Caused by: androID.vIEw.VIEwRootImpl$CalledFromWrongThreadException: Only the original thread that created a vIEw hIErarchy can touch its vIEws.12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.vIEw.VIEwRootImpl.checkThread(VIEwRootImpl.java:4609)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.vIEw.VIEwRootImpl.invalIDateChildInParent(VIEwRootImpl.java:867)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.vIEw.VIEwGroup.invalIDateChild(VIEwGroup.java:4066)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.vIEw.VIEw.invalIDate(VIEw.java:10250)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.vIEw.VIEw.invalIDate(VIEw.java:10205)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.Widget.AbsListVIEw.resetList(AbsListVIEw.java:1952)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.Widget.ListVIEw.resetList(ListVIEw.java:502)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.Widget.ListVIEw.setAdapter(ListVIEw.java:442)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at com.begital.votrebijoutIEr.ShopsActivity$GetJson.doInBackground(ShopsActivity.java:141)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at com.begital.votrebijoutIEr.ShopsActivity$GetJson.doInBackground(ShopsActivity.java:1)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at androID.os.AsyncTask.call(AsyncTask.java:287)12-30 14:10:28.515: E/AndroIDRuntime(12951):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)12-30 14:10:28.515: E/AndroIDRuntime(12951):    ... 5 more12-30 14:10:28.975: E/WindowManager(12951): Activity com.begital.votrebijoutIEr.ShopsActivity has leaked window com.androID.internal.policy.impl.PhoneWindow$DecorVIEw@419962f8 that was originally added here12-30 14:10:28.975: E/WindowManager(12951): androID.vIEw.WindowLeaked: Activity com.begital.votrebijoutIEr.ShopsActivity has leaked window com.androID.internal.policy.impl.PhoneWindow$DecorVIEw@419962f8 that was originally added here12-30 14:10:28.975: E/WindowManager(12951):     at androID.vIEw.VIEwRootImpl.<init>(VIEwRootImpl.java:374)12-30 14:10:28.975: E/WindowManager(12951):     at androID.vIEw.WindowManagerImpl.addVIEw(WindowManagerImpl.java:292)12-30 14:10:28.975: E/WindowManager(12951):     at androID.vIEw.WindowManagerImpl.addVIEw(WindowManagerImpl.java:224)12-30 14:10:28.975: E/WindowManager(12951):     at androID.vIEw.WindowManagerImpl$CompatModeWrapper.addVIEw(WindowManagerImpl.java:149)12-30 14:10:28.975: E/WindowManager(12951):     at androID.vIEw.Window$LocalWindowManager.addVIEw(Window.java:547)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.Dialog.show(Dialog.java:277)12-30 14:10:28.975: E/WindowManager(12951):     at com.begital.votrebijoutIEr.ShopsActivity$GetJson.onPreExecute(ShopsActivity.java:77)12-30 14:10:28.975: E/WindowManager(12951):     at androID.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)12-30 14:10:28.975: E/WindowManager(12951):     at androID.os.AsyncTask.execute(AsyncTask.java:534)12-30 14:10:28.975: E/WindowManager(12951):     at com.begital.votrebijoutIEr.ShopsActivity.onCreate(ShopsActivity.java:61)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.Activity.performCreate(Activity.java:5008)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:2023)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.ActivityThread.access0(ActivityThread.java:130)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)12-30 14:10:28.975: E/WindowManager(12951):     at androID.os.Handler.dispatchMessage(Handler.java:99)12-30 14:10:28.975: E/WindowManager(12951):     at androID.os.Looper.loop(Looper.java:137)12-30 14:10:28.975: E/WindowManager(12951):     at androID.app.ActivityThread.main(ActivityThread.java:4745)12-30 14:10:28.975: E/WindowManager(12951):     at java.lang.reflect.Method.invokeNative(Native Method)12-30 14:10:28.975: E/WindowManager(12951):     at java.lang.reflect.Method.invoke(Method.java:511)12-30 14:10:28.975: E/WindowManager(12951):     at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)12-30 14:10:28.975: E/WindowManager(12951):     at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:553)12-30 14:10:28.975: E/WindowManager(12951):     at dalvik.system.NativeStart.main(Native Method)12-30 14:10:31.905: I/Process(12951): Sending signal. PID: 12951 SIG: 9

解决方法:

UI修改只在Ui thread中完成.你正在doInbackGround()方法中更新你的ListVIEw,它在不同的线程中运行..改变你的代码,如下所示.

    runOnUiThread(new Runnable() {        @OverrIDe        public voID run() {            List.setAdapter(adapter);                       }    });

或更新AsynchTask的onPostExecute()方法中的ListvIEw,如..

   @OverrIDe    protected voID onPostExecute(VoID result) {        super.onPostExecute(result);        List = (ListVIEw) findVIEwByID(R.ID.List);        listadapter adapter = new SimpleAdapter(ShopsActivity.this, osList,                R.layout.ListvIEw_item_row, new String[] { TAG_name,                        TAG_ADDRESS_STRING }, new int[] { R.ID.name_shop,                        R.ID.address_shop });        List.setAdapter(adapter);    }

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