嗨,我正在使用 xmpp 创建一个聊天应用程序。我的问题是,在运行项目时会出现一个对话框,显示"您的项目包含错误修复然后运行",但项目资源管理器中没有显示错误,显示警告标志(希望它不会影响项目)。控制台页面如下所示:
[2013-09-25 10:25:01 - Dex Loader] Unable to execute dex: Multiple dex files define Lcom/kenai/jbosh/AbstractAttr;
[2013-09-25 10:25:01 - XMPPChatDemo] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lcom/kenai/jbosh/AbstractAttr;
我的程序代码是:
public class XMPPChatDemoActivity extends Activity {
public static final String HOST = "192.168.1.4";
public static final int PORT = 5222;
public static final String USERNAME = "semyma";
public static final String PASSWORD = "computer";
private XMPPConnection connection;
private ArrayList<String> messages = new ArrayList<String>();
private Handler mHandler = new Handler();
private EditText recipient;
private EditText textMessage;
private ListView listview;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
recipient = (EditText) this.findViewById(R.id.toET);
textMessage = (EditText) this.findViewById(R.id.chatET);
listview = (ListView) this.findViewById(R.id.listMessages);
setListAdapter();
// Set a listener to send a chat text message
Button send = (Button) this.findViewById(R.id.sendBtn);
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
String to = recipient.getText().toString();
String text = textMessage.getText().toString();
Log.i("XMPPChatDemoActivity", "Sending text " + text + " to " + to);
Message msg = new Message(to, Message.Type.chat);
msg.setBody(text);
if (connection != null) {
connection.sendPacket(msg);
messages.add(connection.getUser() + ":");
messages.add(text);
setListAdapter();
}
}
});
connect();
}
/**
* Called by Settings dialog when a connection is establised with the XMPP
* server
*
* @param connection
*/
public void setConnection(XMPPConnection connection) {
this.connection = connection;
if (connection != null) {
// Add a packet listener to get messages sent to us
PacketFilter filter = new MessageTypeFilter(Message.Type.chat);
connection.addPacketListener(new PacketListener() {
@Override
public void processPacket(Packet packet) {
Message message = (Message) packet;
if (message.getBody() != null) {
String fromName = StringUtils.parseBareAddress(message
.getFrom());
Log.i("XMPPChatDemoActivity", "Text Recieved " + message.getBody()
+ " from " + fromName );
messages.add(fromName + ":");
messages.add(message.getBody());
// Add the incoming message to the list view
mHandler.post(new Runnable() {
public void run() {
setListAdapter();
}
});
}
}
}, filter);
}
}
private void setListAdapter() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
R.layout.listitem, messages);
listview.setAdapter(adapter);
}
@Override
protected void onDestroy() {
super.onDestroy();
try {
if (connection != null)
connection.disconnect();
} catch (Exception e) {
}
}
public void connect() {
final ProgressDialog dialog = ProgressDialog.show(this,
"Connecting...", "Please wait...", false);
Thread t = new Thread(new Runnable() {
@Override
public void run() {
// Create a connection
ConnectionConfiguration connConfig = new ConnectionConfiguration(
HOST, PORT);
XMPPConnection connection = new XMPPConnection(connConfig);
try {
connection.connect();
Log.i("XMPPChatDemoActivity",
"Connected to " + connection.getHost());
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to connect to "
+ connection.getHost());
Log.e("XMPPChatDemoActivity", ex.toString());
setConnection(null);
}
try {
// SASLAuthentication.supportSASLMechanism("PLAIN", 0);
connection.login(USERNAME, PASSWORD);
Log.i("XMPPChatDemoActivity",
"Logged in as " + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
setConnection(connection);
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
for (RosterEntry entry : entries) {
Log.d("XMPPChatDemoActivity",
"--------------------------------------");
Log.d("XMPPChatDemoActivity", "RosterEntry " + entry);
Log.d("XMPPChatDemoActivity",
"User: " + entry.getUser());
Log.d("XMPPChatDemoActivity",
"Name: " + entry.getName());
Log.d("XMPPChatDemoActivity",
"Status: " + entry.getStatus());
Log.d("XMPPChatDemoActivity",
"Type: " + entry.getType());
Presence entryPresence = roster.getPresence(entry
.getUser());
Log.d("XMPPChatDemoActivity", "Presence Status: "
+ entryPresence.getStatus());
Log.d("XMPPChatDemoActivity", "Presence Type: "
+ entryPresence.getType());
Presence.Type type = entryPresence.getType();
if (type == Presence.Type.available)
Log.d("XMPPChatDemoActivity", "Presence AVIALABLE");
Log.d("XMPPChatDemoActivity", "Presence : "
+ entryPresence);
}
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to log in as "
+ USERNAME);
Log.e("XMPPChatDemoActivity", ex.toString());
setConnection(null);
}
dialog.dismiss();
}
});
t.start();
dialog.show();
}
}
大多数情况下,发生这种情况是由于您的项目和依赖项目中有多个 android-support-v4 库的副本。
首先尝试删除其他 android-support-v4 库,并使其对所有库都相同。如果这对您有用,那么其他明智的做法很好,请按照以下步骤与您合作
1-列表项
2-打开项目构建路径,
3-选择"库"选项卡,
4-删除除安卓库以外的所有库
5-添加所有必需的JAR文件
你完成了。
发生此错误,您将通过此示例更好地理解 - 如果您在此项目环境中下载任何项目,则意味着 SDK 在 API LEVEL 15 中更新,并且您在工作空间中导入的此类项目,此时需要注意您的 SDK 在 API 级别
中更新19 此时修复了项目设置,它将进入构建路径,您只需添加外部
库 android-support-v4 那么,如果您在项目中使用 Google 地图库,则由于 android-support-v4/google-play-services 的多个副本而发生此问题。
我希望你能更好地理解。
谢谢