我正在开发一款可以通过蓝牙播放的安卓游戏。我能够配对设备并完成插座。但这就是问题出现的地方。建立连接并且套接字不 null后，我想在服务器和客户端设备上启动活动。我尝试过各种各样的东西但似乎没什么用。我是Android编程的新手，真的需要你的帮助。
这是我的 ServerThread.java
class ServerThread extends Thread {
private final BluetoothServerSocket mmServerSocket;
BluetoothAdapter mBluetoothAdapter;// = BluetoothAdapter.getDefaultAdapter();
final String NAME = "order and chaos";
final UUID MY_UUID = UUID.fromString("05c0bd24-c242-11e3-b4b6-b6ee55aeb395");
Context context;
public ServerThread(BluetoothAdapter mBluetoothAdapter,Context context) {
// Use a temporary object that is later assigned to mmServerSocket,
// because mmServerSocket is final
this.context = context;
this.mBluetoothAdapter = mBluetoothAdapter;
BluetoothServerSocket tmp = null;
try {
// MY_UUID is the app's UUID string, also used by the client code
tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
} catch (IOException e) { }
mmServerSocket = tmp;
}
public void run() {
BluetoothSocket socket = null;
// Keep listening until exception occurs or a socket is returned
while (true) {
try {
socket = mmServerSocket.accept();
} catch (IOException e) {
break;
}
// If a connection was accepted
if (socket != null) {
// Do work to manage the connection (in a separate thread)
}
}
}
/** Will cancel the listening socket, and cause the thread to finish */
public void cancel() {
try {
mmServerSocket.close();
} catch (IOException e) { }
}
}
这是我的 ClientThread.java
public class ClientThread extends Thread
{
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
final UUID MY_UUID = UUID.fromString("05c0bd24-c242-11e3-b4b6-b6ee55aeb395");
Context context;
public ClientThread(BluetoothDevice device,BluetoothAdapter mBluetoothAdapter,Context context) {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
this.context = context;
this.mBluetoothAdapter = mBluetoothAdapter;
BluetoothSocket tmp = null;
mmDevice = device;
// Get a BluetoothSocket to connect with the given BluetoothDevice
try {
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) { }
mmSocket = tmp;
}
public void run() {
// Cancel discovery because it will slow down the connection
mBluetoothAdapter.cancelDiscovery();
try {
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
} catch (IOException connectException) {
// Unable to connect; close the socket and get out
try {
mmSocket.close();
} catch (IOException closeException) { }
return;
}
ConnectedSocket con = new ConnectedSocket();
con.start(1);
}
// Will cancel an in-progress connection, and close the socket
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
这是 ConnectedSocket.java 类导致错误
public class ConnectedSocket extends Thread{
GameActivity gt = new GameActivity();
private Looper myLooper;
int side;
public void start(int i)
{
side = i;
}
public void run()
{
Looper.prepare();
// code that needed a separated thread
if(side==0)
gt.serverSide();
if(side==1)
gt.clientSide();
myLooper = Looper.myLooper();
Looper.loop();
myLooper.quit();
}}
class GameActivity extends Activity{
public void serverSide()
{
Intent i = new Intent(this,SetBoard.class);
startActivity(i);
Toast toast = Toast.makeText(getApplicationContext(),"You are order", Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP|Gravity.LEFT, 50, 50);
toast.show();
}
public void clientSide()
{
Intent i = new Intent(this, SetBoard.class);
startActivity(i);
Toast toast = Toast.makeText(getApplicationContext(),"You are chaos", Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP|Gravity.LEFT, 50, 50);
toast.show();
}
}
这些错误我正在
04-13 12:39:36.680: E/AndroidRuntime(30346): FATAL EXCEPTION: Thread-12
04-13 12:39:36.680: E/AndroidRuntime(30346): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
04-13 12:39:36.680: E/AndroidRuntime(30346): at android.os.Handler.<init>(Handler.java:121)
04-13 12:39:36.680: E/AndroidRuntime(30346): at android.app.Activity.<init>(Activity.java:686)
04-13 12:39:36.680: E/AndroidRuntime(30346): at com.chirag.sudoku.GameActivity.<init>(ConnectedSocket.java:34)
04-13 12:39:36.680: E/AndroidRuntime(30346): at com.chirag.sudoku.ConnectedSocket.<init>(ConnectedSocket.java:11)
04-13 12:39:36.680: E/AndroidRuntime(30346): at com.chirag.sudoku.ClientThread.run(ClientThread.java:53)
04-13 12:39:36.740: D/dalvikvm(30346): GC_CONCURRENT freed 217K, 47% free 2971K/5575K, external 3501K/4547K, paused 4ms+3ms
04-13 12:39:46.790: E/ActivityThread(30346): Activity com.chirag.sudoku.BluetoothMode has leaked IntentReceiver com.chirag.sudoku.BluetoothMode$1@4054b6c0 that was originally registered here. Are you missing a call to unregisterReceiver()?
04-13 12:39:46.790: E/ActivityThread(30346): android.app.IntentReceiverLeaked: Activity com.chirag.sudoku.BluetoothMode has leaked IntentReceiver com.chirag.sudoku.BluetoothMode$1@4054b6c0 that was originally registered here. Are you missing a call to unregisterReceiver()?
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:756)
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:551)
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:871)
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.ContextImpl.registerReceiver(ContextImpl.java:858)
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.ContextImpl.registerReceiver(ContextImpl.java:852)
04-13 12:39:46.790: E/ActivityThread(30346): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:318)
04-13 12:39:46.790: E/ActivityThread(30346): at com.chirag.sudoku.BluetoothMode.find(BluetoothMode.java:142)
04-13 12:39:46.790: E/ActivityThread(30346): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 12:39:46.790: E/ActivityThread(30346): at java.lang.reflect.Method.invoke(Method.java:507)
04-13 12:39:46.790: E/ActivityThread(30346): at android.view.View$1.onClick(View.java:2180)
04-13 12:39:46.790: E/ActivityThread(30346): at android.view.View.performClick(View.java:2585)
04-13 12:39:46.790: E/ActivityThread(30346): at android.view.View$PerformClick.run(View.java:9299)
04-13 12:39:46.790: E/ActivityThread(30346): at android.os.Handler.handleCallback(Handler.java:587)
04-13 12:39:46.790: E/ActivityThread(30346): at android.os.Handler.dispatchMessage(Handler.java:92)
04-13 12:39:46.790: E/ActivityThread(30346): at android.os.Looper.loop(Looper.java:130)
04-13 12:39:46.790: E/ActivityThread(30346): at android.app.ActivityThread.main(ActivityThread.java:3770)
04-13 12:39:46.790: E/ActivityThread(30346): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 12:39:46.790: E/ActivityThread(30346): at java.lang.reflect.Method.invoke(Method.java:507)
04-13 12:39:46.790: E/ActivityThread(30346): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
04-13 12:39:46.790: E/ActivityThread(30346): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:670)
04-13 12:39:46.790: E/ActivityThread(30346): at dalvik.system.NativeStart.main(Native Method)
请告诉我如何解决它。 我甚至尝试通过ConnectedSocket类扩展Activity类来直接启动活动。但这会产生同样的错误。
答案 0 :(得分：1)
这可能有用： -
Handler handler = new Handler();
Runnable run= new Runnable() {
@Override
public void run() {
Intent in = new Intent(context, YourActivity.class);
in.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(in);
}
};
handler.post(run);
答案 1 :(得分：0)
在你的线程中，你把当前类的上下文：
Intent in = new Intent(CurrentActivity.this, YourActivity.class);
startActivity(in);
或者您也可以将参数作为参数...