这里我如何调用线程...我认为错误也来自这里
private void retrieveDataFromServer(String term){
nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("text1",term));
Thread thread = new Thread(null, ChkSuggestionListConn);
thread.start();
}
//check internet connection
private boolean chkConnectionStatus(){
ConnectivityManager connMgr = (ConnectivityManager)
this.getSystemService(Context.CONNECTIVITY_SERVICE);
final android.net.NetworkInfo wifi =
connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
final android.net.NetworkInfo mobile =
connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if( wifi.isAvailable() ){
return true;
}
else if( mobile.isAvailable() ){
return true;
}
else
{
//Toast.makeText(this, "Kindly check your internet" , Toast.LENGTH_LONG).show();
startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
return false;
}
}
private Runnable ChkUserPassConn = new Runnable(){
@Override
public void run() {
//Set flag so we cant load new items 2 at the same time
//ChkItemsConn = true;
if(chkConnectionStatus()==true){
name_str = username_edt.getText().toString();
pass_str = password_edt.getText().toString();
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("user",name_str));
nameValuePairs.add(new BasicNameValuePair("pass",pass_str));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http link");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
InputStream is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result_str=sb.toString();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
Toast.makeText(search_name.this, "Error : Internet Problem", Toast.LENGTH_LONG).show();
}
}else if(chkConnectionStatus()==false){
}
//Done! now continue on the UI thread
runOnUiThread(returnRes0);
}
};
private Runnable returnRes0 = new Runnable() {
@Override
public void run() {
if (result_str.equals("")==false){
//Toast.makeText(ShaketimamaActivity.this,result,Toast.LENGTH_SHORT).show();
//String userid2 = name;
ProgressDialog progress = new ProgressDialog(search_name.this);
progress.setMessage("Loading...please wait..");
progress.setTitle("SmartShopaholic");
new MyTask(progress).execute();
Intent intent2 = new Intent(getApplicationContext(), mainpage.class);
intent2.putExtra("userid",result_str.trim());
startActivity(intent2);
}else{
Toast.makeText(search_name.this,"Failed login!",Toast.LENGTH_SHORT).show();
}
}
};
private Runnable ChkFavListConn = new Runnable(){
@Override
public void run() {
//Set flag so we cant load new items 2 at the same time
//ChkItemsConn = true;
if(userid.equals("")){
ProgressDialog progressA = new ProgressDialog(search_name.this);
progressA.setMessage("Loading...please wait..");
progressA.setTitle("SmartShopaholic");
new MyTask(progressA).execute();
Intent intent = new Intent(getApplicationContext(), register.class);
startActivity(intent);
}else{
ArrayList<NameValuePair> passvalue = new ArrayList<NameValuePair>();
passvalue.add(new BasicNameValuePair("userid",userid.trim()));
try{
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http link");
post.setEntity(new UrlEncodedFormEntity(passvalue));
HttpResponse HRes = client.execute(post);
HttpEntity HEn = HRes.getEntity();
InputStream stream = HEn.getContent();
BufferedReader BRead = new BufferedReader(new InputStreamReader(stream,"iso-8859-1"),8);
StringBuilder SBuilder = new StringBuilder();
String getline = null;
while ((getline = BRead.readLine()) != null) {
SBuilder.append(getline + "\n");
}
stream.close();
System.out.println("dsa");
answer2=SBuilder.toString().trim();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
}
//Done! now continue on the UI thread
runOnUiThread(returnRes2);
}
};
private Runnable returnRes2 = new Runnable() {
@Override
public void run() {
if(answer2.equals("yes")){
ProgressDialog progressA = new ProgressDialog(search_name.this);
progressA.setMessage("Loading...please wait..");
progressA.setTitle("SmartShopaholic");
new MyTask(progressA).execute();
Intent intent1 = new Intent(getApplicationContext(), favoritelist.class);
intent1.putExtra("userid",userid);
startActivity(intent1);
}else{
ProgressDialog progress = new ProgressDialog(search_name.this);
progress.setMessage("Loading...please wait..");
progress.setTitle("SmartShopaholic");
new MyTask(progress).execute();
Intent intent = new Intent(getApplicationContext(), noresult.class);
startActivity(intent);
}
}
};
private Runnable ChkSearchListConn = new Runnable(){
@Override
public void run() {
//Set flag so we cant load new items 2 at the same time
//ChkItemsConn = true;
if(chkConnectionStatus()==true){
name = getname.getText().toString();
if((name.equals(""))){
Toast.makeText(search_name.this, "Blank Field..Please Enter", Toast.LENGTH_LONG).show();
}else{
ArrayList<NameValuePair> passvalue = new ArrayList<NameValuePair>();
passvalue.add(new BasicNameValuePair("choose","pName"));
passvalue.add(new BasicNameValuePair("text1",name));
try{
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http link");
post.setEntity(new UrlEncodedFormEntity(passvalue));
HttpResponse HRes = client.execute(post);
HttpEntity HEn = HRes.getEntity();
InputStream stream = HEn.getContent();
BufferedReader BRead = new BufferedReader(new InputStreamReader(stream,"iso-8859-1"),8);
StringBuilder SBuilder = new StringBuilder();
String getline = null;
while ((getline = BRead.readLine()) != null) {
SBuilder.append(getline + "\n");
}
stream.close();
System.out.println("dsa");
answer=SBuilder.toString().trim();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
}
}else{
}
//Done! now continue on the UI thread
runOnUiThread(returnRes3);
}
};
private Runnable returnRes3 = new Runnable() {
@Override
public void run() {
if(answer.equals("yes")){
ProgressDialog progress = new ProgressDialog(search_name.this);
progress.setMessage("Loading...please wait..");
progress.setTitle("SmartShopaholic");
new MyTask(progress).execute();
Intent intent = new Intent(getApplicationContext(), name_result.class);
System.out.println("userid="+userid+",productname="+name);
intent.putExtra("productname",name);
intent.putExtra("userid", userid);
startActivity(intent);
}else{
ProgressDialog progress = new ProgressDialog(search_name.this);
progress.setMessage("Loading...please wait..");
progress.setTitle("SmartShopaholic");
new MyTask(progress).execute();
Intent intent = new Intent(getApplicationContext(), noresult.class);
startActivity(intent);
}
}
};
private Runnable ChkSuggestionListConn = new Runnable(){
@Override
public void run() {
//Set flag so we cant load new items 2 at the same time
//ChkItemsConn = true;
//System.out.println(number);
//http post
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http link");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
InputStream is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
// Toast.makeText(SearchResult.this, "Error : Internet Problem", Toast.LENGTH_LONG).show();
}
//parse json data
try{
JSONArray jArray = new JSONArray(result);
myBooks = new ArrayList<HashMap<String,Object>>();
HashMap<String, Object> hm;
//System.out.println(result);
//With the help of HashMap add Key, Values of Book, like name,price and icon path
JSONObject json_data;
String[]slist=new String[jArray.length()];
String nameproduct=null;
for(int i=0;i<jArray.length();i++){
json_data = jArray.getJSONObject(i);
nameproduct=json_data.getString("pName");
slist[i]=nameproduct;
}
Set<Object> uniqueSet = new HashSet<Object>(Arrays.asList(slist));
Object[] unique = uniqueSet.toArray();
for(int i=0;i<unique.length;i++){
hm = new HashMap<String, Object>();
hm.put(searchTerm, unique[i]);
hm.put(picpic, R.drawable.ic_search);
myBooks.add(hm);
json_data=null;
}
}catch(Exception e){
listView.setVisibility(View.GONE);
}
//Done! now continue on the UI thread
runOnUiThread(returnRes4);
}
};
private Runnable returnRes4 = new Runnable() {
@Override
public void run() {
SimpleAdapter adapter = new SimpleAdapter(getApplicationContext(), myBooks, R.layout.autocomplete_listbox,
new String[]{picpic,searchTerm}, new int[]{R.id.image1,R.id.text1});
listView.setAdapter(adapter);
listView.setVisibility(View.VISIBLE);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String selection = listView.getItemAtPosition(position).toString();
//Example selection:{ companyName=ckwai1990, pname=dsa, pID=P000000005, price=RM 1230.00 }
int begin=selection.indexOf("searchTerm=");
int end=selection.length()-1;
String productID=selection.substring(begin+11,end);
getname.setText(productID);
listView.setVisibility(View.GONE);
}
});
}
};
这是我的错误日志
06-04 12:26:51.331: E/AndroidRuntime(12711): FATAL EXCEPTION: Thread-17
06-04 12:26:51.331: E/AndroidRuntime(12711): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.ViewRoot.checkThread(ViewRoot.java:3022)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.ViewRoot.requestLayout(ViewRoot.java:635)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:257)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:257)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.widget.TableLayout.requestLayout(TableLayout.java:226)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.requestLayout(View.java:8320)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.widget.AbsListView.requestLayout(AbsListView.java:1202)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.setFlags(View.java:4694)
06-04 12:26:51.331: E/AndroidRuntime(12711): at android.view.View.setVisibility(View.java:3169)
06-04 12:26:51.331: E/AndroidRuntime(12711): at com.skyhaw.search_name$7.run(search_name.java:789)
06-04 12:26:51.331: E/AndroidRuntime(12711): at java.lang.Thread.run(Thread.java:1019)
上面给出的错误，因为我在线程方法中使用ListView进行更改，如下所示是致命错误部分：
private Runnable ChkSuggestionListConn = new Runnable(){
@Override
public void run() {
try{
... here is get my http link connection
}(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
try{
... here is get my http result and put it into array
}(Exception e){
listView.setVisibility(View.GONE);
//so the problem at here
}
这里给出了我通过句柄方法解决的解决方案
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what == EMPTY_RESULT){
System.out.println("handleMsg EMPTY_RESULT");
listView.setVisibility(View.GONE);
}
}
};
//note that handle method is do at the above OnCreate
private Runnable ChkSuggestionListConn = new Runnable(){
@Override
public void run() {
try{
... here is get my http link connection
}(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
try{
... here is get my http result and put it into array
}(Exception e){
messageHandler.sendEmptyMessage(EMPTY_RESULT);
}
答案 0 :(得分：1)
我认为你的问题在这里：
getname.setText(productID);
listView.setVisibility(View.GONE);
您正在尝试从另一个线程修改IU线程。您应该使用post（）方法在UI线程中调用Runnable。这是SO中的类似问题，尽管这个问题使用了AsyncTask：android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
您还可以在此处查看如何使用post（）的示例： http://developer.android.com/resources/articles/painless-threading.html