数据显示在logcat中但不显示在文本视图中..我该怎么办
这是我的日志
12-29 11:05:13.908: D/gralloc_goldfish(772): Emulator without GPU emulation detected.
12-29 11:05:24.649: D/dalvikvm(772): GC_FOR_ALLOC freed 195K, 9% free 7439K/8135K, paused 35ms, total 38ms
12-29 11:05:26.458: D/dalvikvm(772): GC_CONCURRENT freed 229K, 10% free 7628K/8455K, paused 26ms+99ms, total 185ms
12-29 11:05:27.908: D/Create Response(772): {"message":"Login successfully.","success":1}
12-29 11:05:28.598: I/Choreographer(772): Skipped 52 frames! The application may be doing too much work on its main thread.
12-29 11:05:29.848: D/Create Response(772): {"3":"jmi.mohsin@gmail.com","2":"myname","1":"msnmsn","0":"8527801400","mobile_number":"8527801400","hint":"myname","email_id":"jmi.mohsin@gmail.com","password":"msnmsn"}
12-29 11:05:29.848: I/JSON parse(772): myname
12-29 11:05:29.878: W/System.err(772): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
12-29 11:05:29.878: W/System.err(772): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4609)
12-29 11:05:29.878: W/System.err(772): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:835)
12-29 11:05:29.878: W/System.err(772): at android.view.View.requestLayout(View.java:15129)
12-29 11:05:29.878: W/System.err(772): at android.view.View.requestLayout(View.java:15129)
12-29 11:05:29.878: W/System.err(772): at android.view.View.requestLayout(View.java:15129)
12-29 11:05:29.888: W/System.err(772): at android.view.View.requestLayout(View.java:15129)
12-29 11:05:29.888: W/System.err(772): at android.view.View.requestLayout(View.java:15129)
12-29 11:05:29.888: W/System.err(772): at android.widget.TextView.checkForRelayout(TextView.java:6303)
12-29 11:05:29.888: W/System.err(772): at android.widget.TextView.setText(TextView.java:3547)
12-29 11:05:29.888: W/System.err(772): at android.widget.TextView.setText(TextView.java:3405)
12-29 11:05:29.888: W/System.err(772): at android.widget.TextView.setText(TextView.java:3380)
12-29 11:05:29.898: W/System.err(772): at com.example.phonebook.Welcome$loginAccess.doInBackground(Welcome.java:93)
12-29 11:05:29.898: W/System.err(772): at com.example.phonebook.Welcome$loginAccess.doInBackground(Welcome.java:1)
12-29 11:05:29.898: W/System.err(772): at android.os.AsyncTask$2.call(AsyncTask.java:287)
12-29 11:05:29.898: W/System.err(772): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-29 11:05:29.898: W/System.err(772): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-29 11:05:29.898: W/System.err(772): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
12-29 11:05:29.908: W/System.err(772): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-29 11:05:29.908: W/System.err(772): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-29 11:05:29.908: W/System.err(772): at java.lang.Thread.run(Thread.java:856)
这是我的欢迎活动
package com.example.phonebook;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONObject;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.widget.TextView;
public class Welcome extends Activity {
// private ProgressDialog pDialog;
TextView jsonParsed1,DataShow,hint_data;
JSONParser jsonParser = new JSONParser();
JSONParser jobj = new JSONParser();
private static String url = "http://192.168.1.10/android_connect/login_setup/show_data.php";
//private static final String about = "about";
// private static final String TAG_SUCCESS="success";
// private static final String hint="hint";
@Override
protected void onCreate(Bundle savedInstanceState) {
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads().detectDiskWrites().detectNetwork()
.penaltyLog().build());
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
jsonParsed1=(TextView)findViewById(R.id.jsonParsed);
DataShow=(TextView)findViewById(R.id.show_all_data);
hint_data=(TextView)findViewById(R.id.hint_datafor_value);
String abt = getIntent().getStringExtra("mobile_number");
//Intent i=getIntent();
//String abt=i.getStringExtra("mobile_number");
//System.out.println(abt);
//jsonParsed1.setText(abt);
new loginAccess().execute();
}
class loginAccess extends AsyncTask {
TextView jsonParsed = (TextView) findViewById(R.id.jsonParsed);
private String Content;
String OutputData = "";
JSONObject jsonResponse;
@Override
protected String doInBackground(String... arg0) {
String abt = getIntent().getStringExtra("mobile_number");
List params = new ArrayList();
params.add(new BasicNameValuePair("mobile_number", abt));
JSONObject json = jsonParser.makeHttpRequest(url,"POST", params);
Content = json.toString();
Log.d("Create Response", Content);
/****************** Start Parse Response JSON Data *************/
try {
/****** Creates a new JSONObject with name/value mappings from the JSON string. ********/
jsonResponse = new JSONObject(Content);
/******* Fetch node values **********/
String hint = jsonResponse.optString("hint").toString();
OutputData += "Node : \n\n "+ hint +" ";
Log.i("JSON parse", hint);
/****************** End Parse Response JSON Data *************/
// jsonParsed.setText( OutputData );
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Void unused) {
// //JSONObject jsonResponse = null;
//
// /******* Fetch node values **********/
// String hint = jsonResponse.optString("hint").toString();
//
// OutputData += "Node : \n\n "+ hint +" ";
//
// Log.i("JSON parse", hint);
//
// /****************** End Parse Response JSON Data *************/
//
// hint_data.setText( OutputData );
jsonParsed.setText( OutputData );
}
}
}
答案 0 :(得分：1)
jsonParsed.setText( OutputData );
您只需在onPostExecute行之后的hint_data.setText( OutputData );方法中加上上一行，您就会得到完美的输出
并从jsonParsed.setText( OutputData );方法中删除doInBackground行。
答案 1 :(得分：1)
修改您的异步任务，如下所示： 执行asynctask的后台方法在NON UI Thread中运行，所以我们不能修改doInbackgroud中的ui元素，所以我们必须返回结果，以便结果将postExecute方法作为参数出现，然后我们就可以修改UI
package com.example.phonebook;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONObject;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.widget.TextView;
import com.afbb.animationtest.R;
public class Welcome extends Activity {
TextView jsonParsed1,DataShow,hint_data;
TextView jsonParsed ;
JSONParser jsonParser = new JSONParser();
JSONParser jobj = new JSONParser();
private static String url = "http://192.168.1.10/android_connect/login_setup/show_data.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads().detectDiskWrites().detectNetwork()
.penaltyLog().build());
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
jsonParsed1=(TextView)findViewById(R.id.jsonParsed);
DataShow=(TextView)findViewById(R.id.show_all_data);
hint_data=(TextView)findViewById(R.id.hint_datafor_value);
jsonParsed = (TextView) findViewById(R.id.jsonParsed);
String abt = getIntent().getStringExtra("mobile_number");
new loginAccess().execute();
}
class loginAccess extends AsyncTask<String,Void,JSONObject> {
private String Content;
@Override
protected JSONObject doInBackground(String... arg0) {
String abt = getIntent().getStringExtra("mobile_number");
List params = new ArrayList();
params.add(new BasicNameValuePair("mobile_number", abt));
JSONObject json = jsonParser.makeHttpRequest(url,"POST", params);
Content = json.toString();
Log.d("Create Response", Content);
/****************** Start Parse Response JSON Data *************/
try {
JSONObject jsonResponse = new JSONObject(Content);
String hint = jsonResponse.optString("hint").toString();
return jsonResponse;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(JSONObject result) {
//Parse and update the UI
jsonParsed.setText( OutputData );
}
}
}
i
答案 2 :(得分：0)
从doInBackground方法
中删除以下行 jsonParsed.setText( OutputData );
您无法从外部主线接触视图。