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工作完全這與SDK中的Android應用程序設置爲當：Android應用程序在法墜毀實際設備上使用，但在Eclipse
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="11"/>
的問題是，應用程序將在Eclipse環境上運行良好AVD。當我直接安裝到手機中，或者甚至將手機設置爲在Eclipse中使用的設備時，該應用程序在下面的代碼區域中失敗。我對Java依然陌生，更不用說爲Android而努力，所以請隨身攜帶，因爲在調試方面我仍然有點失落......但爲了縮小發生錯誤的位置，我一路上放了一些吐司，「點擊「吐司顯示，但」創建的意圖「不......因此，我只有2行......但我無法弄清楚爲什麼它死於該領域的生活...方法代碼烤麪包在其計算方法如下：
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String bid = ((TextView) view.findViewById(R.id.bid)).getText()
.toString();
Toast.makeText(getApplicationContext(), "clicked", Toast.LENGTH_LONG).show();
Intent in = new Intent(getApplicationContext(),
BusinessDetails.class);
in.putExtra(TAG_BID, bid);
Toast.makeText(getApplicationContext(), "Intent Created", Toast.LENGTH_LONG).show();
startActivityForResult(in, 100);
}
});
BusinessDetails類的束方法如下：
package com.example.businessLookUp;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
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.Button;
import android.widget.EditText;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;
public class BusinessDetails extends Activity {
EditText txtDesc;
Button btnSave;
String bid;
String _bname;
String _phone;
String _address;
String _city;
String _state;
String _zip;
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
private static final String url_business_detials = "http://192.168.1.2/get_business_details.php";
private static final String url_update_details = "http://192.168.1.2/update_business.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_BUSINESS = "business";
private static final String TAG_BID = "bid";
private static final String TAG_NAME = "name";
private static final String TAG_ADDRESS = "address";
private static final String TAG_CITY = "city";
private static final String TAG_STATE = "state";
private static final String TAG_ZIP = "zip";
private static final String TAG_PHONE = "phone";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_business);
// save button
btnSave = (Button) findViewById(R.id.btnSave);
Intent i = getIntent();
bid = i.getStringExtra(TAG_BID);
Toast.makeText(getApplicationContext(), "check 1", Toast.LENGTH_LONG).show();
// Getting complete product details in background thread
new GetBusinessDetails().execute();
的BusinessDetails在這裏截斷，因爲下面的線從未達到：
Toast.makeText(getApplicationContext(), "check 1", Toast.LENGTH_LONG).show();
告訴我，代碼從不甚至達到...任何想法在那裏，這是在去錯了???
logcat的例外：
10-27 16:39:28.834: E/AndroidRuntime(25260): FATAL EXCEPTION: main
10-27 16:39:28.834: E/AndroidRuntime(25260): android.os.NetworkOnMainThreadException
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.IoBridge.connect(IoBridge.java:112)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.Socket.connect(Socket.java:842)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.example.businesslookup.JSONParser.makeHttpRequest(JSONParser.java:65)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.example.businesslookup.BusinessDetails$GetBusinessDetails$1.run(BusinessDetails.java:127)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Handler.handleCallback(Handler.java:605)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Handler.dispatchMessage(Handler.java:92)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Looper.loop(Looper.java:137)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.app.ActivityThread.main(ActivityThread.java:4697)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.lang.reflect.Method.invokeNative(Native Method)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.lang.reflect.Method.invoke(Method.java:511)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
10-27 16:39:28.834: E/AndroidRuntime(25260): at dalvik.system.NativeStart.main(Native Method)
這是處理網絡異步任務：
class GetBusinessDetails extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(BusinessDetails.this);
pDialog.setMessage("Loading details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground(String... params) {
runOnUiThread(new Runnable() {
public void run() {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("bid", bid));
JSONObject json = jsonParser.makeHttpRequest(
url_business_detials, "GET", params);
Log.d("Single Business Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray businessObj = json.getJSONArray(TAG_BUSINESS); // JSON Array
JSONObject business = businessObj.getJSONObject(0);
TextView _bName = (TextView) findViewById(R.id.bnameInf);
TextView _phone = (TextView) findViewById(R.id.phoneInf);
TextView _address = (TextView) findViewById(R.id.addressInf);
TextView _city = (TextView) findViewById(R.id.cityInf);
TextView _state = (TextView) findViewById(R.id.stateInf);
TextView _zip = (TextView) findViewById(R.id.zipInf);
_bName.setText(business.getString(TAG_NAME));
_phone.setText(business.getString(TAG_PHONE));
_address.setText(business.getString(TAG_ADDRESS));
_city.setText(business.getString(TAG_CITY));
_state.setText(business.getString(TAG_STATE));
_zip.setText(business.getString(TAG_ZIP));
}else{
Toast.makeText(getApplicationContext(), "No Match Returned", Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
看看你的logcat輸出。在那裏你會看到堆棧跟蹤。在上面的代碼中加入並標記出現異常的行。 –
您正在嘗試在UI線程上執行網絡命令，請查看「NetworkOnMainThreadException」。 – Sam
再次確定我是新的..使感覺。那麼我將如何去在UI線程之外執行它們呢？ – Skindeep2366