Android studio getSlotFromBufferLocked:未知缓冲区错误 [英] Android studio getSlotFromBufferLocked: unknown buffer error
问题描述
我想做一个简单的登录和注册应用程序，以便用户可以创建一个帐户.(姓名、用户名、密码)我使用 WAMP 和 MYSQL 数据库来存储帐户.
I want to make a simple login and register app, so the user can create an account. (name, username, password) I use WAMP and a MYSQL database where I store the accounts.
当我在注册表单上填写用户信息并单击注册时，出现以下错误:
When I fill in the user info on the registration form and click register I get the following error:
09-14 09:30:39.864 2624-2638/com.example.appname.appname E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xab7115e0
09-14 09:30:48.632 2624-2638/com.example.appname.appname E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xab7125a0
09-14 09:30:51.940 2624-2638/com.example.appname.appname E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xab7125a0
当我去检查数据库时，它没有存储帐户.
When I go check the database it didn't store the account.
MainActivity.java
MainActivity.java
import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void userReg(View v)
{
startActivity(new Intent(this, Register.class));
}
public void userLogin(View view)
{
}
}
注册.java
import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
public class Register extends Activity {
EditText ET_NAME,ET_USER_NAME,ET_USER_PASS;
String name,user_name,user_pass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register_layout);
ET_NAME = (EditText) findViewById(R.id.name);
ET_USER_NAME = (EditText) findViewById(R.id.new_user_name);
ET_USER_PASS = (EditText) findViewById(R.id.new_user_pass);
}
public void userReg(View view)
{
name = ET_NAME.getText().toString();
user_name = ET_USER_NAME.getText().toString();
user_pass = ET_USER_PASS.getText().toString();
String method = "register";
BackgroundTask backgroundTask = new BackgroundTask(Register.this);
backgroundTask.execute(method,name,user_name,user_pass);
finish();
}
}
后台任务.java
import android.app.AlertDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
public class BackgroundTask extends AsyncTask<String, Void, String> {
AlertDialog alertDialog;
Context ctx;
BackgroundTask(Context ctx) {
this.ctx = ctx;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... params) {
String reg_url = "http://10.0.2.2.2/webapp/register.php";
String login_url = "http://10.0.2.2.2/webapp/login.php";
String method = params[0];
if (method.equals("register")) {
String name = params[1];
String user_name = params[2];
String user_pass = params[3];
try {
URL url = new URL(reg_url);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
OutputStream OS = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(OS, "UTF-8"));
String data = URLEncoder.encode("user", "UTF-8") + "=" + URLEncoder.encode(name, "UTF-8") + "&" +
URLEncoder.encode("user_name", "UTF-8") + "=" + URLEncoder.encode(user_name, "UTF-8") + "&" +
URLEncoder.encode("user_pass", "UTF-8") + "=" + URLEncoder.encode(user_pass, "UTF-8");
bufferedWriter.write(data);
bufferedWriter.flush();
bufferedWriter.close();
OS.close();
InputStream IS = httpURLConnection.getInputStream();
IS.close();
return "Registration Success...";
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(String result) {
Toast.makeText(ctx, result, Toast.LENGTH_LONG).show();
}
}
注册.php
<?php
require "init.php";
$name = $_POST["user"];
$user_name = $_POST["user_name"];
$user_pass = $_POST["user_pass"];
$sql_query = "insert into user_info values('$name','$user_name','$user_pass');";
if(mysqli_query($con,$sql_query))
{
//echo"<h3> Data insertion success...</h3>";
}
else{
//echo "Data insertion error..".mysqli_error($con);
}
?>
init.php
<?php
$db_name="myDBname";
$mysql_user = "root";
$mysql_pass = "root";
$server_name="localhost";
$con = mysqli_connect($server_name,$mysql_user,$mysql_pass,$db_name);
if(!$con)
{
//echo"Connection Error".mysqli_connect_error();
}
else
{
//echo"<h3> Database connection success.....</h3>";
}
?>
推荐答案
这是 Android 中的一个错误，已在更高版本的 Marshmallow 中修复
我相信这是 Marshmallow 特有的.您使用的是 Marshmallow 设备吗?
I believe that this is Marshmallow specific. Are you using a Marshmallow device?
我注意到每次在应用程序之间切换(不管哪个)或退出应用程序以及活动被销毁时都会打印出此错误.
I've noticed this error is printed out every time I switch between applications (doesn't matter which) or exit out of them, and when activities are destroyed.
我尝试在两台 Nexus 5 上运行相同的应用程序 - 一个运行 Lollipop，另一个运行 Marshmallow，这些日志打印仅出现在 Marshmallow 版本上 - 每个应用程序，而不仅仅是我正在构建的应用程序.
I've tried running the same apps on two Nexus 5s - one running Lollipop and the other Marshmallow, and these log prints only appeared on the Marshmallow version - with every app, not just the one I'm building.
不确定为什么会发生这种情况，但我在这里打开了一份报告.
Not sure why this happens, but I opened a report here.
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