Question

我正在尝试使用插入信息创建Android应用但我得到这个错误“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我怎么能解决它请向我解释详细信息谢谢你的帮助

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

不要引用doInBackground()内的小部件。将您从这些EditText小部件获得的值传递到SendPostReqAsyncTask上的构造函数，或作为execute()调用的附加字符串传递。

Answer 2

...
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>();
...

必须从ui线程调用android studio“插入app”方法gettext

2 个答案: