I want use Java Function in Android Project -

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i have function. function worked in java project. want function use android project. while using. project "unfortunately .. has stopped. mi ?

function

public string yandex_translate(string yandex_lang,string yandex_text) throws ioexception, parseexception{      string yandex_key = "****";       string yandex_url = "https://translate.yandex.net/api/v1.5/tr.json/translate?key="+yandex_key+"&lang="+yandex_lang+"&text="+yandex_text;       url url = new url(yandex_url);          urlconnection httpurlconnection = url.openconnection();          inputstream inputstream = httpurlconnection.getinputstream();          bufferedreader bufferedreader = new bufferedreader(new inputstreamreader(inputstream));           string line=bufferedreader.readline();           jsonparser parser = new jsonparser();           jsonobject jsonobject = (jsonobject) parser.parse(line);;           jsonarray msg = (jsonarray)jsonobject.get("text");          if(jsonobject.get("code").tostring().equals("200")){             return msg.get(0).tostring();         }else{             return "Çeviri yapılırken bir hata oluştu.";         } }

function using

    @override public void onclick(view v) {     // todo auto-generated method stub     string a;     try {          = yandex_translate("en-tr","book");     } catch (ioexception e) {         // todo auto-generated catch block         = e.getmessage();     } catch (parseexception e) {         // todo auto-generated catch block         = e.getmessage();     }     tvkelime.settext(a); } 
04-06 19:14:25.128: e/androidruntime(2220): fatal exception: main 04-06 19:14:25.128: e/androidruntime(2220): android.os.networkonmainthreadexception 04-06 19:14:25.128: e/androidruntime(2220):     @ android.os.strictmode$androidblockguardpolicy.onnetwork(strictmode.java:1117) 04-06 19:14:25.128: e/androidruntime(2220):     @ java.net.inetaddress.lookuphostbyname(inetaddress.java:385) 04-06 19:14:25.128: e/androidruntime(2220):     @ java.net.inetaddress.getallbynameimpl(inetaddress.java:236) 04-06 19:14:25.128: e/androidruntime(2220):     @ java.net.inetaddress.getallbyname(inetaddress.java:214) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpconnection.<init>(httpconnection.java:70) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpconnection.<init>(httpconnection.java:50) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpconnection$address.connect(httpconnection.java:340) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpconnectionpool.get(httpconnectionpool.java:87) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpconnection.connect(httpconnection.java:128) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpengine.opensocketconnection(httpengine.java:316) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpsurlconnectionimpl$httpsengine.makesslconnection(httpsurlconnectionimpl.java:461) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpsurlconnectionimpl$httpsengine.connect(httpsurlconnectionimpl.java:433) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpengine.sendsocketrequest(httpengine.java:290) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpengine.sendrequest(httpengine.java:240) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpurlconnectionimpl.getresponse(httpurlconnectionimpl.java:282) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpurlconnectionimpl.getinputstream(httpurlconnectionimpl.java:177) 04-06 19:14:25.128: e/androidruntime(2220):     @ libcore.net.http.httpsurlconnectionimpl.getinputstream(httpsurlconnectionimpl.java:271) 04-06 19:14:25.128: e/androidruntime(2220):     @ com.example.deneme.mainactivity.yandex_translate(mainactivity.java:113) 04-06 19:14:25.128: e/androidruntime(2220):     @ com.example.deneme.mainactivity.onclick(mainactivity.java:92) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.view.view.performclick(view.java:4204) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.view.view$performclick.run(view.java:17355) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.os.handler.handlecallback(handler.java:725) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.os.handler.dispatchmessage(handler.java:92) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.os.looper.loop(looper.java:137) 04-06 19:14:25.128: e/androidruntime(2220):     @ android.app.activitythread.main(activitythread.java:5041) 04-06 19:14:25.128: e/androidruntime(2220):     @ java.lang.reflect.method.invokenative(native method) 04-06 19:14:25.128: e/androidruntime(2220):     @ java.lang.reflect.method.invoke(method.java:511) 04-06 19:14:25.128: e/androidruntime(2220):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793) 04-06 19:14:25.128: e/androidruntime(2220):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:560) 04-06 19:14:25.128: e/androidruntime(2220):     @ dalvik.system.nativestart.main(native method)

you should move code work in different thread (in case asynctask)

asynctask enables proper , easy use of ui thread.

this class allows perform background operations , publish results on ui thread without having manipulate threads and/or handlers.

asynctask designed helper class around thread , handler , not constitute generic threading framework. asynctasks should ideally used short operations (a few seconds @ most.) if need keep threads running long periods of time, highly recommended use various apis provided java.util.concurrent pacakge such executor, threadpoolexecutor , futuretask.

an asynchronous task defined computation runs on background thread , result published on ui thread. asynchronous task defined 3 generic types, called params, progress , result, , 4 steps, called onpreexecute, doinbackground, onprogressupdate , onpostexecute.

it's how write it:

private class asyncrequest extends asynctask<string, void, string> {     // private because if calls method without syntax said exception appear again     private string yandex_translate(string yandex_lang,string yandex_text) throws ioexception, parseexception     {          string yandex_key = "****";           string yandex_url = "https://translate.yandex.net/api/v1.5/tr.json/translate?key="+yandex_key+"&lang="+yandex_lang+"&text="+yandex_text;           url url = new url(yandex_url);          urlconnection httpurlconnection = url.openconnection();          inputstream inputstream = httpurlconnection.getinputstream();          bufferedreader bufferedreader = new bufferedreader(new inputstreamreader(inputstream));           string line=bufferedreader.readline();           jsonparser parser = new jsonparser();           jsonobject jsonobject = (jsonobject) parser.parse(line);;           jsonarray msg = (jsonarray)jsonobject.get("text");          if(jsonobject.get("code").tostring().equals("200")){             return msg.get(0).tostring();         }else{             return "Çeviri yapılırken bir hata oluştu.";         }     }      @override     protected string doinbackground(string... params)     {         return yandex_translate(params[0], params[1]);     }      @override     protected void onpostexecute(string s)     {         super.onpostexecute(s);         tvkelime.settext(s);     } }

then use it

public void onclick(view v) {     // todo auto-generated method stub     new asyncrequest("en-tr","book").execute(); }

the edittext updated when finished.

asynctask documentation.

onpostexecute , onpreexecute called in ui thread, can update ui here.

doinbackground called in worker thread, avoid every ui edit here! if need, use runonuithread method.


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