Question

我需要帮助。我在＆＃34; getText（）。toString（）＆＃34;它说＆＃34; getTEXT方法应该从UI线程中调用......＆＃34;这是什么意思？并且在提交数据时，数据不会保存在数据库中。有人可以帮帮我吗？我已经没时间了：＆＃39;（。如果有任何需要，请告诉我。

这是我的代码：

SecondScreen.java

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.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.view.View.OnClickListener;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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 org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

public class SecondScreen extends Activity {

    // Progress Dialog
    private ProgressDialog pDialog;

    JSONParser jsonParser = new JSONParser();
    EditText name_eT;
    EditText age_eT;
    EditText email_eT;
    EditText phone_eT;
    EditText descr_eT;

    private static String url_submit_data = "http://khaty-ismail0.rhcloud.com/phptutorial/submit.php";

    // JSON Node names
    private static final String TAG_SUCCESS = "success";

    private Button submitButton;

    String Name="1";
    String Age="1";
    String Gender ="1";
    String Email ="1";
    String Phone ="1";
    String IncidentType ="1";
    String Description ="1";    

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_layout);

        // Edit Text
        inputName = (EditText) findViewById(R.id.name_eT);
        age_eT = (EditText) findViewById(R.id.age_eT);
        email_eT = (EditText) findViewById(R.id.email_eT);
        phone_eT = (EditText) findViewById(R.id.phone_eT);
        descr_eT = (EditText) findViewById(R.id.descr_eT);

        CheckBox cBoxMale = (CheckBox) findViewById(R.id.checkBoxMale);
        CheckBox cBoxFemale = (CheckBox) findViewById(R.id.checkBoxFemale); 

        Spinner list = (Spinner) findViewById(R.id.spinner);

        // Create button
        Button submitButton = (Button) findViewById(R.id.subm_btn);

        // button click event
        submitButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // creating new product in background thread
                /*String Name = name_eT.getText().toString();
                String Age = age_eT.getText().toString();
                String Email = email_eT.getText().toString();
                String Phone = phone_eT.getText().toString();
                String Description = descr_eT.getText().toString();*/


                /*Intent i = new Intent(getApplicationContext(),SubmitData.class);
                startActivity(i);*/

                new SubmitData().execute(Name, Age, Gender, Email, Phone, IncidentType, Description);
            }
        });
    }

    public void onCheckboxClicked(View V) {
        boolean checked = ((CheckBox) V).isChecked();

        switch (V.getId()) {
            case R.id.checkBoxMale:
                if (checked);
                    //Male
                else
                    //No gender
                    break;

            case R.id.checkBoxFemale:
                if (checked);
                    //Female
                else
                    //No gender
                    break;

        }
    }

    /**
     * Background Async Task to Create new product
     * */
    class SubmitData extends AsyncTask<String, String, String> {

        /**
         * Before starting background thread Show Progress Dialog
         * */
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(SecondScreen.this);
            pDialog.setMessage("Submitting your data...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
        }

        /**
         * Creating product
         * */


        protected String doInBackground(String... args) {
            //noinspection ResourceType
            String Name = name_eT.getText().toString();
            //noinspection ResourceType
            String Age = age_eT.getText().toString();
            String Email = email_eT.getText().toString();
            String Phone = phone_eT.getText().toString();
            String Description = descr_eT.getText().toString();

            String Name = args[0];
            String Age = args[1];
            String Gender = args [2];
            String Email = args[3];
            String Phone = args[4];
            String IncidentType = args[5];
            String Description = args[6];

            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("Name", Name));
            params.add(new BasicNameValuePair("Age", Age));
            params.add(new BasicNameValuePair("Gender", Gender));
            params.add(new BasicNameValuePair("Email", Email));
            params.add(new BasicNameValuePair("Phone", Phone));
            params.add(new BasicNameValuePair("Incident Type", IncidentType));
            params.add(new BasicNameValuePair("Description", Description));

            // getting JSON Object
            // Note that create product url accepts POST method

            ServiceHandler serviceClient = new ServiceHandler();
            String json = serviceClient.makeServiceCall(url_submit_data, ServiceHandler.POST, params);

            // check log cat fro response
            Log.d("Create Response", json.toString());

            // check for success tag
            if (json != null) {
                try {
                    JSONObject jsonObj = new JSONObject(json);
                    boolean error = jsonObj.getBoolean("error");
                    // checking for error node in json
                    if (!error) {
                        // new category created successfully
                        Log.e("Prediction added successfully ", "> " + jsonObj.getString("message"));
                    } else {
                        Log.e("Add Prediction Error: ",
                                "> " + jsonObj.getString("message"));
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }

            } else {
                Log.e("JSON Data", "JSON data error!");
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
        }
    }
}

这是我的 ServiceHandler.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import android.util.Log;

public class ServiceHandler {

    static String response = null;
    static InputStream is = null;
    public final static int GET = 1;
    public final static int POST = 2;

    public ServiceHandler() {

    }

    /*
     * Making service call
     * @url - url to make request
     * @method - http request method
     * */
    public String makeServiceCall(String url, int method) {
        return this.makeServiceCall(url, method, null);
    }

    /*
     * Making service call
     * @url - url to make request
     * @method - http request method
     * @params - http request params
     * */
    public String makeServiceCall(String url, int method,List<NameValuePair> params) {
        try {
            // http client
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpEntity httpEntity = null;
            HttpResponse httpResponse = null;

            // Checking http request method type
            if (method == POST) {
                HttpPost httpPost = new HttpPost(url);
                // adding post params
                if (params != null) {
                    httpPost.setEntity(new UrlEncodedFormEntity(params));
                }

                httpResponse = httpClient.execute(httpPost);

            } else if (method == GET) {
                // appending params to url
                if (params != null) {
                    String paramString = URLEncodedUtils
                            .format(params, "utf-8");
                    url += "?" + paramString;
                }
                HttpGet httpGet = new HttpGet(url);
                Log.d("url", url);

                httpResponse = httpClient.execute(httpGet);

            }
            httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "UTF-8"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            response = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error: " + e.toString());
        }

        return response;

    }
}

这里是布局文件 secondlayout.xml ：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/User_info"
        android:id="@+id/userInfo"
        android:textSize="30sp"
        android:textColor="@color/colorFont"
        android:textStyle="bold"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"/>

    <TextView
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        android:text="Name:"
        android:id="@+id/name_tV"
        android:textColor="@color/colorFont"
        android:layout_marginTop="24dp"
        android:layout_below="@+id/userInfo"
        android:layout_alignLeft="@+id/userInfo"
        android:layout_alignStart="@+id/userInfo" />

    <TextView
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        android:text="Age:"
        android:id="@+id/age_tV"
        android:textColor="@color/colorFont"
        android:layout_alignBottom="@+id/age_eT"
        android:layout_alignLeft="@+id/name_tV"
        android:layout_alignStart="@+id/name_tV" />

    <TextView
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        android:text="Gender"
        android:id="@+id/gender_tV"
        android:textColor="@color/colorFont"
        android:layout_above="@+id/email_eT"
        android:layout_alignLeft="@+id/age_tV"
        android:layout_alignStart="@+id/age_tV" />

    <TextView
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        android:text="Email:"
        android:id="@+id/email_tV"
        android:textColor="@color/colorFont"
        android:layout_alignBottom="@+id/email_eT"
        android:layout_alignLeft="@+id/gender_tV"
        android:layout_alignStart="@+id/gender_tV"
        android:layout_marginTop="32dp"/>

    <TextView
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        android:text="Phone"
        android:id="@+id/phone_tV"
        android:textColor="@color/colorFont"
        android:layout_alignBottom="@+id/phone_eT"
        android:layout_alignLeft="@+id/gender_tV"
        android:layout_alignStart="@+id/gender_tV" />

    <EditText
        android:layout_width="200dp"
        android:layout_height="30dp"
        android:layout_marginBottom="5dp"
        android:inputType="textPersonName"
        android:hint="@string/hint_required"
        android:textColorHint="@color/colorBackground"
        android:background="@drawable/border_style"
        android:ems="10"
        android:id="@+id/name_eT"
        android:textColor="@color/inputFont"
        android:layout_alignBottom="@+id/name_tV"
        android:layout_alignRight="@+id/userInfo"
        android:layout_alignEnd="@+id/userInfo" />

    <EditText
        android:layout_width="200dp"
        android:layout_height="30dp"
        android:inputType="number"
        android:ems="10"
        android:hint="@string/hint_required"
        android:textColorHint="@color/colorBackground"
        android:background="@drawable/border_style"
        android:id="@+id/age_eT"
        android:textColor="@color/inputFont"
        android:layout_below="@+id/name_eT"
        android:layout_alignLeft="@+id/name_eT"
        android:layout_alignStart="@+id/name_eT" />

    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Male"
        android:id="@+id/checkBoxMale"
        android:onClick="onCheckboxClicked"
        android:textColor="@color/colorFont"
        android:layout_below="@+id/age_tV"
        android:layout_alignLeft="@+id/age_eT"
        android:layout_alignStart="@+id/age_eT" />

    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Female"
        android:id="@+id/checkBoxFemale"
        android:onClick="onCheckboxClicked"
        android:textColor="@color/colorFont"
        android:layout_alignTop="@+id/checkBoxMale"
        android:layout_alignRight="@+id/userInfo"
        android:layout_alignEnd="@+id/userInfo" />

    <EditText
        android:layout_width="200dp"
        android:layout_height="30dp"
        android:layout_marginBottom="5dp"
        android:inputType="textEmailAddress"
        android:ems="10"
        android:id="@+id/email_eT"
        android:hint="@string/hint_required"
        android:textColorHint="@color/colorBackground"
        android:textColor="@color/inputFont"
        android:background="@drawable/border_style"
        android:layout_below="@+id/checkBoxMale"
        android:layout_alignLeft="@+id/checkBoxMale"
        android:layout_alignStart="@+id/checkBoxMale" />

    <EditText
        android:layout_width="200dp"
        android:layout_height="30dp"
        android:inputType="phone"
        android:ems="10"
        android:id="@+id/phone_eT"
        android:textColor="@color/inputFont"
        android:hint="@string/hint_required"
        android:textColorHint="@color/colorBackground"
        android:background="@drawable/border_style"
        android:layout_below="@+id/email_eT"
        android:layout_alignLeft="@+id/email_eT"
        android:layout_alignStart="@+id/email_eT" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/incident_info"
        android:id="@+id/incidentInfo"
        android:textColor="@color/colorFont"
        android:textStyle="bold"
        android:textSize="30sp"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />

    <Spinner
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/spinner"
        android:prompt="@array/incident_type"
        android:entries="@array/incident_type"
        android:layout_below="@+id/incidentInfo"
        android:layout_alignLeft="@+id/phone_eT"
        android:layout_alignStart="@+id/phone_eT"
        android:layout_alignRight="@+id/phone_eT"
        android:layout_alignEnd="@+id/phone_eT" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/incident_type_DD"
        android:textColor="@color/colorFont"
        android:id="@+id/incident_DD"
        android:layout_below="@+id/incidentInfo"
        android:layout_toLeftOf="@+id/spinner"
        android:layout_toStartOf="@+id/spinner" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/description"
        android:id="@+id/description_tV"
        android:textColor="@color/colorFont"
        android:layout_below="@+id/spinner"
        android:layout_alignLeft="@+id/phone_tV"
        android:layout_alignStart="@+id/phone_tV" />

    <EditText
        android:layout_width="300dp"
        android:layout_height="60dp"
        android:inputType="textMultiLine"
        android:ems="10"
        android:id="@+id/descr_eT"
        android:hint="@string/descr_hint"
        android:textColorHint="@color/colorBackground"
        android:gravity="top"
        android:background="@drawable/border_style"
        android:textColor="@color/inputFont"
        android:layout_below="@+id/description_tV"
        android:layout_alignLeft="@+id/description_tV"
        android:layout_alignStart="@+id/description_tV" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_margin="5dp"
        android:text="SUBMIT"
        android:onClick="SubmitButton"
        android:textStyle="bold"
        android:textSize="35sp"
        android:id="@+id/subm_btn"
        android:background="@drawable/custom_btn"
        android:textColor="@color/buttonFont"
        android:layout_alignParentBottom="true"/>


</RelativeLayout>

这是我的 submit.php 文件：

<?php 
// array for JSON response
$response = array();

// check for required fields
if (isset($_POST['Name']) && isset($_POST['Age']) && isset($_POST['Email']) && isset($_POST['Phone']) && isset($_POST['Description'])) {

    $Name = $_POST['Name'];
    $Age = $_POST['Age'];
    $Gender = $_POST['Gender'];
    $Email = $_POST['Email'];
    $Phone = $_POST['Phone'];
    $Incident Type = $_POST['Incident Type'];
    $Description = $_POST['Description'];

    // include db connect class
    require_once __DIR__ . '/db_connect.php';

    // connecting to db
    $db = new DB_CONNECT();

    // mysql inserting a new row
    $result = mysql_query("INSERT INTO user(Name, Age, Email, Phone, Description VALUES('$Name', '$Age', '$Email', '$Phone', '$Description')");

    // check if row inserted or not
    if ($result) {
        // successfully inserted into database
        $response["success"] = 1;
        $response["message"] = "Product successfully created.";

        // echoing JSON response
        echo json_encode($response);
    } else {
        // failed to insert row
        $response["success"] = 0;
        $response["message"] = "Oops! An error occurred.";

        // echoing JSON response
        echo json_encode($response);
    }
} else {
    // required field is missing
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    // echoing JSON response
    echo json_encode($response);
}

?>

Answer 1

您不能在UI元素（您的EditText-s）上使用getText()，因为AsyncTask.doInBackground()在单独的线程中运行，并且无法访问UI元素。您实际上是new SubmitData().execute(Name, Age, Gender, Email, Phone, IncidentType, Description);做的，并且args[]从doInBackground()内部引用它们

getText（）。toString（）常量和资源类型不匹配

1 个答案: