1 files changed, 95 insertions, 0 deletions
diff --git a/src/com/google/android/apps/adk2/UsbConnection.java b/src/com/google/android/apps/adk2/UsbConnection.java
new file mode 100644
index 0000000..ecd539a
--- /dev/null
+++ b/src/com/google/android/apps/adk2/UsbConnection.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.android.apps.adk2;
+
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import android.app.Activity;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+
+import com.android.future.usb.UsbAccessory;
+import com.android.future.usb.UsbManager;
+import com.google.android.apps.adk2.activity.ConnectActivity;
+
+public class UsbConnection extends Connection {
+	Activity mActivity;
+	FileInputStream mInputStream;
+	FileOutputStream mOutputStream;
+	ParcelFileDescriptor mFileDescriptor;
+	UsbAccessory mAccessory;
+
+	private static final String ACTION_USB_PERMISSION = "com.google.android.DemoKit.action.USB_PERMISSION";
+
+	private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
+		@Override
+		public void onReceive(Context context, Intent intent) {
+			String action = intent.getAction();
+			if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
+				UsbAccessory accessory = UsbManager.getAccessory(intent);
+				if (accessory != null && accessory.equals(mAccessory)) {
+					Log.i(ADK.TAG, "closing accessory");
+					Intent connectIntent = new Intent(mActivity,
+							ConnectActivity.class);
+					connectIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+					mActivity.startActivity(connectIntent);
+				}
+			}
+		}
+	};
+
+	public UsbConnection(Activity activity, UsbManager usbManager,
+			UsbAccessory accessory) {
+		mActivity = activity;
+		mFileDescriptor = usbManager.openAccessory(accessory);
+		if (mFileDescriptor != null) {
+			mAccessory = accessory;
+			FileDescriptor fd = mFileDescriptor.getFileDescriptor();
+			mInputStream = new FileInputStream(fd);
+			mOutputStream = new FileOutputStream(fd);
+		}
+		IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
+		filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
+		mActivity.registerReceiver(mUsbReceiver, filter);
+	}
+
+	@Override
+	public InputStream getInputStream() {
+		return mInputStream;
+	}
+
+	@Override
+	public OutputStream getOutputStream() {
+		return mOutputStream;
+	}
+
+	public void close() throws IOException {
+		if (mFileDescriptor != null) {
+			mFileDescriptor.close();
+		}
+		mActivity.unregisterReceiver(mUsbReceiver);
+	}
+
+}