Java 异步任务实现问题

我不知道我做错了什么，但是在合并了来自两个不同文件的源代码之后，我在编译下面的代码时遇到了一些问题。任何关于是什么导致这些问题的建议（作为学习经验）以及如果不是太复杂的话，请提供解决方法

（提前感谢！）

爪哇：

---

我认为您在异步任务结束时（在onCreate之前）忘记了一个“}”

从我看到这是您的问题：

每个

名称值对。添加（新的基本名称值对（…，…）；

需要额外的

）

您缺少一个

}

来结束

AsyncTask

的作用域，实际上我认为您也缺少2个来结束内部类（否则您就有重复的

onCreate

方法）

您的

MyAsyncTask

类有一个

public

修饰符。移除它

您的

doInBackground

方法应该返回一个

Double

而不是

对象

您的

AsyncTask

现在被称为

AddEditCountry

，它与外部类相同。这是不可能的。更改其中一个名称

您的

AsyncTask

类正在

onClick（视图v）

方法中定义。将类移出方法。（

您不能在

btn.setOnClickListener（this）中使用
this
OnClickListener

，而您的类不是。您可以通过创建一个新的

OnClickListener

来解决这个问题，它实现了onClick方法并将其作为参数传递。（就像您使用“保存”按钮所做的那样）

我不明白你为什么有一个内部活动课。我建议您重新考虑是否真的需要该内部活动，或者您只需要

AddEditCountry

中

DeviceConfig

中的方法/功能，或者它们应该放在两个不同的文件中

---

编辑：列出了更多问题。

为什么有内部类

DeviceConfig

活动？导入导入com.nfc.linkingmanager.DeviceConfig.MyAsyncTask；删除它将asynctask类移到方法之外。检查返回类型doInBackground（）.1。我用你描述的方法更新了源代码！事情看起来好多了！（我也更新了上面的问题日志-我还有一些问题）2。我纠正了}个问题（谢谢！）我还有4个bug/问题，你知道这些可能是什么吗？1。我加了第二个）2。我相信我也纠正了这些问题（不再出现在问题日志中）3。删除了公共修饰符4。从Object更改为Double 5。我相信我也纠正了这一点。我编辑了这个，但我认为它有问题。删除了btn.setOnClickListener（此）；[不确定在此添加或执行什么操作]

import android.app.Activity;
import android.app.AlertDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.ViewGroup;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.ProgressBar;
import android.widget.TimePicker;
import android.widget.Toast;

import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.app.Activity;
import android.opengl.Visibility;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;




public class AddEditCountry extends Activity {

     private long rowID; 
     private EditText nameEt;
     private EditText capEt;
     private EditText codeEt;
     private TimePicker timeEt;


            private EditText value;
            private Button btn;
            private ProgressBar pb;
            @Override
            public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.deviceconfig);
                value=(EditText)findViewById(R.id.editText1);
                btn=(Button)findViewById(R.id.button1);
                pb=(ProgressBar)findViewById(R.id.progressBar1);
                pb.setVisibility(View.GONE);
                nameEt = (EditText) findViewById(R.id.nameEdit);
                  capEt = (EditText) findViewById(R.id.capEdit);
                  codeEt = (EditText) findViewById(R.id.codeEdit);
                  timeEt = (TimePicker) findViewById(R.id.timeEdit);




                  Bundle extras = getIntent().getExtras(); 

                  if (extras != null)
                  {
                     rowID = extras.getLong("row_id");
                     nameEt.setText(extras.getString("name"));  
                     capEt.setText(extras.getString("cap"));  
                     codeEt.setText(extras.getString("code"));    
                     String time = extras.getString("time");
                     String[] parts = time.split(":");
                     timeEt.setCurrentHour(Integer.valueOf(parts[0]));
                     timeEt.setCurrentMinute(Integer.valueOf(parts[1]));
                     timeEt.setIs24HourView(false);
                     DecimalFormat df =   new DecimalFormat  ("00");
                     String minutes = df.format(min);
            }
            }

            @Override
            public boolean onCreateOptionsMenu(Menu menu) {
                getMenuInflater().inflate(R.menu.main, menu);
                return true;
            }

            public void onClick(View v) {
                // TODO Auto-generated method stub
                        pb.setVisibility(View.VISIBLE);
                        (value.getText().toString());       
                    }{


            new MyAsyncTask().execute

             class AddEditCountry extends AsyncTask<String, Integer, Double>{

                @Override
                protected Double doInBackground(String... params) {
                    // TODO Auto-generated method stub
                    postData(params[0]);
                    return null;
                }

                protected void onPostExecute(Double result){
                    pb.setVisibility(View.GONE);
                    Toast.makeText(getApplicationContext(), "command sent", Toast.LENGTH_LONG).show();
                }
                protected void onProgressUpdate(Integer... progress){
                    pb.setProgress(progress[0]);
                }

                public void postData(String valueIWantToSend) {
                    // Create a new HttpClient and Post Header
                    HttpClient httpclient = new DefaultHttpClient();
                    HttpPost httppost = new HttpPost("http://gamedemo.hostzi.com/apply.cgi");

                    try {
                        // Add your data
                        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                        nameValuePairs.add(new BasicNameValuePair("submit_button", "Wireless_MAC"));
                        nameValuePairs.add(new BasicNameValuePair("change_action", ""));
                        nameValuePairs.add(new BasicNameValuePair("action", "Apply"));
                        nameValuePairs.add(new BasicNameValuePair("wl_macmode", "allow"));
                        nameValuePairs.add(new BasicNameValuePair("wl_maclist", "32"));
                        nameValuePairs.add(new BasicNameValuePair("wait_time", "3"));
                        nameValuePairs.add(new BasicNameValuePair("wl_mac_filter", "1"));
                        nameValuePairs.add(new BasicNameValuePair("start", "allow"));
                        nameValuePairs.add(new BasicNameValuePair("wl_macmode1", "allow"));
                        nameValuePairs.add(new BasicNameValuePair("m0", "00%3A1E%3A33%3AFE%3A0D%3A38"));
                        nameValuePairs.add(new BasicNameValuePair("m16", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m1", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m17", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m2", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m18", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m3", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m19", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m4", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m20", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m5", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m21", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m6", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m22", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m7", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m23", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m8", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m24", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m9", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m25", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m10", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m26", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m11", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m27", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m12", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m28", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m13", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m29", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m14", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m30", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m15", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("m31", "00%3A00%3A00%3A00%3A00%3A00"));
                        nameValuePairs.add(new BasicNameValuePair("end", ""));

                        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                        // Execute HTTP Post Request
                        HttpResponse response = httpclient.execute(httppost);

                    } catch (ClientProtocolException e) {
                        // TODO Auto-generated catch block
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                    }
                }





          Button saveButton =(Button) findViewById(R.id.saveBtn);
          saveButton.setOnClickListener(new OnClickListener() {

              public void onClick(View v) 
              {
                 if (nameEt.getText().length() != 0)
                 {
                    AsyncTask<Object, Object, Object> saveContactTask = 
                       new AsyncTask<Object, Object, Object>() 
                       {
                          @Override
                          protected Double doInBackground(Object... params) 
                          {
                             saveContact();
                             return null;
                          }

                          @Override
                          protected void onPostExecute(Object result) 
                          {
                             finish();
                          }
                       }; 

                    saveContactTask.execute((Object[]) null); 
                 }

                 else
                 {
                    AlertDialog.Builder alert = new AlertDialog.Builder(AddEditCountry.this);
                    alert.setTitle(R.string.errorTitle); 
                    alert.setMessage(R.string.errorMessage);
                    alert.setPositiveButton(R.string.errorButton, null); 
                    alert.show();
                 }
              } 
         });
       }


           private void saveContact() 
           {
              DatabaseConnector dbConnector = new DatabaseConnector(this);

              if (getIntent().getExtras() == null)
              {
                  dbConnector.insertContact(nameEt.getText().toString(),
                          capEt.getText().toString(),
                          timeEt.getCurrentHour().toString() + ":"
                              + timeEt.getCurrentMinute().toString(),
                          codeEt.getText().toString());

              }
              else
              {
                 dbConnector.updateContact(rowID,
                         nameEt.getText().toString(),
                            capEt.getText().toString(),
                              timeEt.getCurrentHour().toString() + ":"
                                  + timeEt.getCurrentMinute().toString(),
                              codeEt.getText().toString());
              }
           }}

    Description Resource    Path    Location    Type
The left-hand side of an assignment must be a variable  AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 116    Java Problem
The method setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (AddEditCountry)   AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 80 Java Problem
Syntax error on token(s), misplaced construct(s)    AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 60 Java Problem
Syntax error, insert ";" to complete BlockStatements    AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 120    Java Problem
Syntax error, insert "AssignmentOperator Expression" to complete Assignment AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 120    Java Problem
Syntax error, insert "AssignmentOperator Expression" to complete Expression AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 116    Java Problem
Syntax error, insert "AssignmentOperator Expression" to complete Expression AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 116    Java Problem
Syntax error on token ".", = expected   AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 1  Java Problem
Syntax error on token(s), misplaced construct(s)    AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 122    Java Problem
Syntax error on tokens, AnnotationName expected instead AddEditCountry.java /app/Game Demo/src/com/app/gamedemo line 207    Java Problem