我正在尝试从Web服务器加载我的数据库并登录到我的应用程序。
我使用oum saokosal源代码。
LoginActivity.java
public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
final String LOG = "LoginActivity";
Button btnLogin;
EditText etUsername, etPassword;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
etUsername = (EditText)findViewById(R.id.etUsername);
etPassword = (EditText)findViewById(R.id.etPassword);
btnLogin = (Button)findViewById(R.id.btnLogin);
btnLogin.setOnClickListener(this);
}
@Override
public void onClick(View v) {
HashMap postData = new HashMap();
String username = etUsername.getText().toString();
String password = etPassword.getText().toString();
postData.put("txtUsername", username);
postData.put("txtPassword", password);
PostResponseAsyncTask task1 = new PostResponseAsyncTask(LoginActivity.this, postData,
new AsyncResponse() {
@Override
public void processFinish(String s) {
Log.d(LOG, s);
if(s.contains("success")){
Toast.makeText(LoginActivity.this, "Sucessfully Login", Toast.LENGTH_LONG).show();
Intent in = new Intent(LoginActivity.this, ListActivity.class);
startActivity(in);
}
else{
Toast.makeText(LoginActivity.this, "Connection Failed", Toast.LENGTH_LONG).show();
}
}
});
task1.execute("http://symphonyrecords.gigfa.com/customer/");
}
}
connection.php
<?php
$servername = "my_database_servername"; //replace it with your database server name
$username = "my_database_usename"; //replace it with your database username
$password = "my_database_password"; //replace it with your database password
$dbname = "my_database_name";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
?>
PostResponseAsyncTask
MainActivity.java
public class MainActivity extends AppCompatActivity
{
Button button1;
Button button3;
int clickerId;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.button1 = ((Button)findViewById(R.id.button1));
this.button2 = ((Button)findViewById(R.id.button2));
this.button3 = ((Button)findViewById(R.id.button3));
this.button1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
String url = "http://10.0.3.2/client/post.php?format=json";
PostResponseAsyncTask readTask = new PostResponseAsyncTask(MainActivity.this, new AsyncResponse()
{
public void processFinish(String s) {
Toast.makeText(MainActivity.this, s, 1).show();
}
});
readTask.execute(new String[] { url });
}
});
this.button2.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
String url = "http://10.0.3.2/client/post.php";
PostResponseAsyncTask readTask = new PostResponseAsyncTask(MainActivity.this, new AsyncResponse()
{
public void processFinish(String s) {
Toast.makeText(MainActivity.this, s, 1).show();
}
});
readTask.execute(new String[] { url });
}
});
this.button3.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String url = "http://10.0.3.2/client/post.php";
PostResponseAsyncTask readTask = new PostResponseAsyncTask(MainActivity.this, false, new AsyncResponse()
{
public void processFinish(String s)
{
Toast.makeText(MainActivity.this, s, 1).show();
}
});
readTask.execute(new String[] { url });
}
});
}
}
PostResponseAsyncTask.java
package com.kosalgeek.genasync12;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map.Entry;
public class PostResponseAsyncTask extends AsyncTask<String, Void, String>
{
private ProgressDialog progressDialog;
private AsyncResponse delegate;
private Context context;
private HashMap<String, String> postData = new HashMap();
private String loadingMessage = "Loading...";
private boolean showLoadingMessage = true;
public PostResponseAsyncTask(Context context, AsyncResponse delegate)
{
this.delegate = delegate;
this.context = context;
}
public PostResponseAsyncTask(Context context, boolean showLoadingMessage, AsyncResponse delegate)
{
this.delegate = delegate;
this.context = context;
this.showLoadingMessage = showLoadingMessage;
}
public PostResponseAsyncTask(Context context, HashMap<String, String> postData, AsyncResponse delegate)
{
this.context = context;
this.postData = postData;
this.delegate = delegate;
}
public PostResponseAsyncTask(Context context, HashMap<String, String> postData, boolean showLoadingMessage, AsyncResponse delegate)
{
this.context = context;
this.postData = postData;
this.delegate = delegate;
this.showLoadingMessage = showLoadingMessage;
}
public PostResponseAsyncTask(Context context, String loadingMessage, AsyncResponse delegate)
{
this.context = context;
this.loadingMessage = loadingMessage;
this.delegate = delegate;
}
public PostResponseAsyncTask(Context context, HashMap<String, String> postData, String loadingMessage, AsyncResponse delegate)
{
this.context = context;
this.postData = postData;
this.loadingMessage = loadingMessage;
this.delegate = delegate;
}
protected void onPreExecute()
{
if (this.showLoadingMessage == true) {
this.progressDialog = new ProgressDialog(this.context);
this.progressDialog.setMessage(this.loadingMessage);
this.progressDialog.show();
}
super.onPreExecute();
}
protected String doInBackground(String[] urls)
{
String result = "";
for (int i = 0; i <= 0; i++)
{
result = invokePost(urls[i], this.postData);
}
return result;
}
private String invokePost(String requestURL, HashMap<String, String> postDataParams)
{
String response = "";
try {
URL url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode = conn.getResponseCode();
if (responseCode == 200)
{
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = br.readLine()) != null)
response = new StringBuilder().append(response).append(line).toString();
}
else
{
response = "";
Log.i("PostResponseAsyncTask", new StringBuilder().append(responseCode).append("").toString());
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {
StringBuilder result = new StringBuilder();
boolean first = true;
for (Map.Entry entry : params.entrySet()) {
if (first)
first = false;
else {
result.append("&");
}
result.append(URLEncoder.encode((String)entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode((String)entry.getValue(), "UTF-8"));
}
return result.toString();
}
protected void onPostExecute(String result)
{
if ((this.showLoadingMessage == true) &&
(this.progressDialog.isShowing())) {
this.progressDialog.dismiss();
}
result = result.trim();
this.delegate.processFinish(result);
}
public String getLoadingMessage()
{
return this.loadingMessage;
}
public void setLoadingMessage(String loadingMessage) {
this.loadingMessage = loadingMessage;
}
public HashMap<String, String> getPostData() {
return this.postData;
}
public void setPostData(HashMap<String, String> postData) {
this.postData = postData;
}
public Context getContext() {
return this.context;
}
public AsyncResponse getDelegate() {
return this.delegate;
}
}
（http://symphonyrecords.gigfa.com/customer）
connection.php文件位于我的主机
我已经在我的cPanel中创建了我的用户名和密码数据库，它在浏览器中工作得很好，但在应用程序中它让我连接失败。
我在这里做错了什么？