小编sst*_*stn的帖子

有谁知道如何解决这个问题？我尝试了很多东西,但没有一个能奏效.

当我点击更多细节时,我得到了这个:

at sun.security.provider.JavaKeyStore.engineLoad(Unknown Source)
atsun.security.provider.JavaKeyStore$JKS.engineLoad(Unknown Source)
at java.security.KeyStore.load(Unknown Source)
at com.sun.deploy.security.RootCertStore$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.RootCertStore.loadCertStore(Unknown Source)
at com.sun.deploy.security.RootCertStore.load(Unknown Source)
at com.sun.deploy.security.RootCertStore.load(Unknown Source)
at com.sun.deploy.security.ImmutableCertStore.load(Unknown Source)
at com.sun.deploy.security.TrustDecider.isAllPermissionGranted(Unknown Source)
at com.sun.deploy.security.TrustDecider.isAllPermissionGranted(Unknown Source)
at sun.plugin.security.PluginClassLoader.getPermissions(Unknown Source)
at java.security.SecureClassLoader.getProtectionDomain(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at …

我有一个相当混乱的问题.我正在尝试通过Android运行基本聊天客户端.我已经在我的主项目的3个班级中进行了设置.问题是,由于一些奇怪的原因,我的ChatConnect.java(处理实际的聊天消息)似乎不会弹出作为AndroidManifest.xml的Activity,这会导致一些严重的问题 - 我需要使用一个布局(具体来说)我的ChatConnect类中的game.xml)由于没有被定义为清单中的活动而拒绝加载.无论如何,这是我的三个班级.

是的,我意识到StrictMode非常可怕.但是,即使在清单中具有所述权限,我也无法让聊天客户端在没有它的情况下工作.我试过清理我的项目.

非常感谢所有帮助!

ChatConnect.java

package com.example.AndroidRPGNew.multiplayer;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.example.AndroidRPGNew.Main;
import com.example.AndroidRPGNew.R;

import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

public class ChatConnect extends Activity implements Runnable {
    // Begin displaying messages to game.xml. Display to chatView via new lines.
    // Ability to send message via chatMessageSend - Sends chat message data from chatMessage     text field
    // Once connected, log to chat. Allow for multicolors, etc.
    private Socket socket;
    public …

我正在process-1尝试将数据写入共享内存。同时process-2我正在从同一共享内存中读取数据。在这种情况下，我需要在这两个进程之间提供同步。如果我要遍历未命名的信号量（使用shm_init(),mmap()），它会起作用吗？

我写了这样的代码，它能工作吗？

fd = shm_open("shm_name", O_CREAT| O_RDWR, S_IRUSR | S_IWUSR);

sema = mmap(NULL, sizeof(sem_t), PROT_READ | PROT_WRITE,MAP_SHARED , fd, 0);

sem_init(sema, 1, 1);