Java tutorial
/* * Copyright (C) 2011 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.andrewquitmeyer.MarkYourTerritory; import java.io.BufferedReader; import java.io.FileDescriptor; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONObject; import android.app.Activity; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.os.ParcelFileDescriptor; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.SeekBar; import android.widget.TextView; import android.widget.Toast; import com.android.future.usb.UsbAccessory; import com.android.future.usb.UsbManager; import com.andrewquitmeyer.MarkYourTerritory.R; public class DemoKitActivity extends Activity implements Runnable { private static final String TAG = "MYT"; public static String token = "69"; private static final String ACTION_USB_PERMISSION = "com.google.android.DemoKit.action.USB_PERMISSION"; private UsbManager mUsbManager; private PendingIntent mPermissionIntent; private boolean mPermissionRequestPending; View nodeviceview; UsbAccessory mAccessory; ParcelFileDescriptor mFileDescriptor; FileInputStream mInputStream; FileOutputStream mOutputStream; private static final int MESSAGE_SWITCH = 1; private static final int MESSAGE_MOIST = 2; private static final int MESSAGE_LIGHT = 3; private static final int MESSAGE_JOY = 4; protected class SwitchMsg { private byte sw; private byte state; public SwitchMsg(byte sw, byte state) { this.sw = sw; this.state = state; } public byte getSw() { return sw; } public byte getState() { return state; } } protected class MoistureMsg { private int moisture; public MoistureMsg(int moistness) { this.moisture = moistness; } public int getMoisture() { return moisture; } } private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (ACTION_USB_PERMISSION.equals(action)) { synchronized (this) { UsbAccessory accessory = UsbManager.getAccessory(intent); if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) { openAccessory(accessory); } else { Log.d(TAG, "permission denied for accessory " + accessory); } mPermissionRequestPending = false; } } else if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) { UsbAccessory accessory = UsbManager.getAccessory(intent); if (accessory != null && accessory.equals(mAccessory)) { closeAccessory(); } } } }; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mUsbManager = UsbManager.getInstance(this); mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0); IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION); filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED); registerReceiver(mUsbReceiver, filter); if (getLastNonConfigurationInstance() != null) { mAccessory = (UsbAccessory) getLastNonConfigurationInstance(); openAccessory(mAccessory); } setContentView(R.layout.maintwo); nodeviceview = (View) findViewById(R.id.noDevice); enableControls(false); } @Override public Object onRetainNonConfigurationInstance() { if (mAccessory != null) { return mAccessory; } else { return super.onRetainNonConfigurationInstance(); } } @Override public void onResume() { super.onResume(); Intent intent = getIntent(); if (mInputStream != null && mOutputStream != null) { return; } UsbAccessory[] accessories = mUsbManager.getAccessoryList(); UsbAccessory accessory = (accessories == null ? null : accessories[0]); if (accessory != null) { if (mUsbManager.hasPermission(accessory)) { openAccessory(accessory); } else { synchronized (mUsbReceiver) { if (!mPermissionRequestPending) { mUsbManager.requestPermission(accessory, mPermissionIntent); mPermissionRequestPending = true; } } } } else { Log.d(TAG, "mAccessory is null"); } } @Override public void onPause() { super.onPause(); closeAccessory(); } @Override public void onDestroy() { unregisterReceiver(mUsbReceiver); super.onDestroy(); } private void openAccessory(UsbAccessory accessory) { mFileDescriptor = mUsbManager.openAccessory(accessory); if (mFileDescriptor != null) { mAccessory = accessory; FileDescriptor fd = mFileDescriptor.getFileDescriptor(); mInputStream = new FileInputStream(fd); mOutputStream = new FileOutputStream(fd); Thread thread = new Thread(null, this, "DemoKit"); thread.start(); Log.d(TAG, "accessory opened"); enableControls(true); } else { Log.d(TAG, "accessory open fail"); } } private void closeAccessory() { enableControls(false); try { if (mFileDescriptor != null) { mFileDescriptor.close(); } } catch (IOException e) { } finally { mFileDescriptor = null; mAccessory = null; } } protected void enableControls(boolean enable) { } private int composeInt(byte hi, byte lo) { int val = (int) hi & 0xff; val *= 256; val += (int) lo & 0xff; return val; } public void run() { int ret = 0; byte[] buffer = new byte[16384]; int i; while (ret >= 0) { try { ret = mInputStream.read(buffer); } catch (IOException e) { break; } i = 0; while (i < ret) { int len = ret - i; switch (buffer[i]) { // case 0x1: // if (len >= 3) { // Message m = Message.obtain(mHandler, MESSAGE_SWITCH); // m.obj = new SwitchMsg(buffer[i + 1], buffer[i + 2]); // mHandler.sendMessage(m); // } // i += 3; // break; case 0x4: //Moist if (len >= 3) { Message m = Message.obtain(mHandler, MESSAGE_MOIST); m.obj = new MoistureMsg(composeInt(buffer[i + 1], buffer[i + 2])); mHandler.sendMessage(m); } i += 3; break; // case 0x5: // if (len >= 3) { // Message m = Message.obtain(mHandler, MESSAGE_LIGHT); // m.obj = new LightMsg(composeInt(buffer[i + 1], // buffer[i + 2])); // mHandler.sendMessage(m); // } // i += 3; // break; // case 0x6: // if (len >= 3) { // Message m = Message.obtain(mHandler, MESSAGE_JOY); // m.obj = new JoyMsg(buffer[i + 1], buffer[i + 2]); // mHandler.sendMessage(m); // } // i += 3; // break; default: Log.d(TAG, "unknown msg: " + buffer[i]); i = len; break; } } } } Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MESSAGE_SWITCH: SwitchMsg o = (SwitchMsg) msg.obj; handleSwitchMessage(o); break; case MESSAGE_MOIST: MoistureMsg t = (MoistureMsg) msg.obj; handleMoistureMessage(t); break; // case MESSAGE_LIGHT: // LightMsg l = (LightMsg) msg.obj; // handleLightMessage(l); // break; // // case MESSAGE_JOY: // JoyMsg j = (JoyMsg) msg.obj; // handleJoyMessage(j); // break; } } }; // public void sendCommand(byte command, byte target, int value) { // byte[] buffer = new byte[3]; // if (value > 255) // value = 255; // // buffer[0] = command; // buffer[1] = target; // buffer[2] = (byte) value; // if (mOutputStream != null && buffer[1] != -1) { // try { // mOutputStream.write(buffer); // } catch (IOException e) { // Log.e(TAG, "write failed", e); // } // } // } protected void handleMoistureMessage(MoistureMsg t) { } protected void handleSwitchMessage(SwitchMsg o) { } public void onStartTrackingTouch(SeekBar seekBar) { } public void onStopTrackingTouch(SeekBar seekBar) { } }