Android Studio " inserting app "方法 gettext 必须从 UI 线程调用

Question

我正在尝试创建带有插入信息的Android应用程序但是我收到此错误" 方法gettext必须从UI线程调用"我在editTextName.getText（）和editTextAdd.getText（）下得到红线这是我的代码如何解决它，请向我解释详细信息 感谢您的帮助

import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
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.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.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 Inserting extends ActionBarActivity {
    private EditText editTextName;
    private EditText editTextAdd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.inserting);
        editTextName = (EditText) findViewById(R.id.editTextName);
        editTextAdd = (EditText) findViewById(R.id.editTextAddress);

    }
    public void insert(View view){
        String name = editTextName.getText().toString();
        String add = editTextAdd.getText().toString();
        insertToDatabase(name,add);
    }
    private void insertToDatabase(String name, String add){
        class SendPostReqAsyncTask extends AsyncTask<String, Void, String> {
            @Override
            protected String doInBackground(String... params) {
                String paramUsername = params[0];
                String paramAddress = params[1];

                String name = editTextName.getText().toString();
                String add = editTextAdd.getText().toString();
                List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                nameValuePairs.add(new BasicNameValuePair("name", name));
                nameValuePairs.add(new BasicNameValuePair("address", add));
                try {
                    HttpClient httpClient = new DefaultHttpClient();
                    HttpPost httpPost = new HttpPost(
                            "http://192.168.215.14/insert-db.php");
                    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                    HttpResponse response = httpClient.execute(httpPost);
                    HttpEntity entity = response.getEntity();

                } catch (ClientProtocolException e) {
                } catch (IOException e) {
                }
                return "success";
            }
            @Override
            protected void onPostExecute(String result) {
                super.onPostExecute(result);
                Toast.makeText(getApplicationContext(), result, Toast.LENGTH_LONG).show();
                TextView textViewResult = (TextView) findViewById(R.id.textViewResult);
                textViewResult.setText("Inserted");
            }
        }
        SendPostReqAsyncTask sendPostReqAsyncTask = new SendPostReqAsyncTask();
        sendPostReqAsyncTask.execute(name, add);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

Answer 1

...
private void insertToDatabase(String n, String a){
    final String name = editTextName.getText().toString();
    final String add = editTextAdd.getText().toString();
    class SendPostReqAsyncTask extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... params) {
            String paramUsername = params[0];
            String paramAddress = params[1];
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
...

Answer 2

不要从doInBackground()内部引用小部件。将从这些EditText小部件中获取的值传递给SendPostReqAsyncTask上的构造函数，或作为附加字符串传递给execute()调用。