open Accessory in einer 2. Activity

1final Intent i=new Intent(this,RangeActivity.class);
2
3 ButtonNextActivity.setOnClickListener(new OnClickListener(){
4
5 @Override
6 public void onClick(View v) {
7 i.putExtra("mFileDescriptor", mFileDescriptor);
8 startActivity(i);
9
10 }});

1private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";
2
3
4 private boolean mPermissionRequestPending;
5 private UsbManager mUsbManager;
6 private UsbAccessory mAccessory;
7 private ParcelFileDescriptor mFileDescriptor;
8 private FileInputStream mInputStream;
9 private FileOutputStream mOutputStream;
10 private PendingIntent mPermissionIntent;
11
12 byte[] bufferSendeRxTxFrequenz = new byte[20];
13
14 Bundle bn= new Bundle();
15
16 Properties proberties = new Properties();
17 final String TAG="";
18
19 @Override
20 public void onCreate(Bundle savedInstanceState) {
21 super.onCreate(savedInstanceState);
22 setContentView(R.layout.activity_range);
23
24
25
26 bn=getIntent().getBundleExtra("mFileDescriptor");
27
28 //eine Referenz zum USB system service
29 mUsbManager = UsbManager.getInstance(this);
30 //Erlaubnis für USB wird definiert --> daher die Abfrage wenn ein Accessoir angeschlossen wird
31 mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0);
32 //IntenFilter wird zusammen mit dem Broadcast receiver verwendet, um zu gewährleisten, dass die Activity nur auf sichere broadcasts zuhört
33 IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
34 filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
35 //Der Broadcast Receiver wird registriert
36 registerReceiver(mUsbReceiver, filter);
37
38 //mFileDescriptor = (ParcelFileDescriptor) getIntent().getExtras().get("mFileDescriptor");
39
40
41
42 }
43
44
45 @Override
46 public void onResume() {
47 super.onResume();
48
49 //erhalte Referenz von dem Accessoir vom UsbManager
50 UsbAccessory[] accessories = mUsbManager.getAccessoryList();
51
52 UsbAccessory accessory = (accessories == null ? null : accessories[0]);
53 if (accessory != null) {
54 if (mUsbManager.hasPermission(accessory)) {
55 openAccessory(accessory);
56 } else {
57 synchronized (mUsbReceiver) {
58 if (!mPermissionRequestPending) {
59 mUsbManager.requestPermission(accessory,
60 mPermissionIntent);
61 mPermissionRequestPending = true;
62 }
63 }
64 }
65 } else {
66 Log.d("", "mAccessory is null");
67 }
68 }
69
70 @Override
71 public void onDestroy() {
72 super.onDestroy();
73
74 closeAccessory();
75 unregisterReceiver(mUsbReceiver);
76
77 Log.i("LifeCycle","onDestroy");
78 }
79
80
81 private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
82 //diese MMethode wird aufgerufen, wenn der broadcast receiver
83 //registriert ist und wenn
84 @Override
85 public void onReceive(Context context, Intent intent) {
86 String action = intent.getAction();
87 if (ACTION_USB_PERMISSION.equals(action)) {
88 synchronized (this) {
89 UsbAccessory accessory = UsbManager.getAccessory(intent);
90 if (intent.getBooleanExtra(
91 UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
92 openAccessory(accessory);
93
94 runOnUiThread(new Runnable() {
95 @Override
96 public void run() {
97 Toast toast = Toast.makeText(RangeActivity.this, "1 !!", Toast.LENGTH_LONG);
98 toast.show();
99
100 }
101 });
102
103 } else {
104 Log.d("", "permission denied for accessory "
105 + accessory);
106 }
107 mPermissionRequestPending = false;
108 }
109 } else if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
110 UsbAccessory accessory = UsbManager.getAccessory(intent);
111 if (accessory != null && accessory.equals(mAccessory)) {
112 closeAccessory();
113 }
114 }
115 }
116 };
117
118 private void openAccessory(UsbAccessory accessory) {
119
120 mFileDescriptor = mUsbManager.openAccessory(accessory);
121
122 if (mFileDescriptor != null) {
123
124 mAccessory = accessory;
125 FileDescriptor fd = mFileDescriptor.getFileDescriptor();
126 mInputStream = new FileInputStream(fd);
127 mOutputStream = new FileOutputStream(fd);
128
129 // Empfangen
130 Thread thread1 = new Thread(null, commRunnableRx, "");
131 thread1.start();
132 Thread thread2 = new Thread(null, commRunnableTx, "");
133 thread2.start();
134
135// Timer t1=new Timer();
136// t1.scheduleAtFixedRate(timerTask,0,500);
137 // --
138 Log.d("", "accessory opened");
139
140 runOnUiThread(new Runnable() {
141 @Override
142 public void run() {
143 Toast toast = Toast.makeText(RangeActivity.this, "opened !!", Toast.LENGTH_LONG);
144 toast.show();
145
146 }
147 });
148
149
150
151 } else {
152
153 Log.d("", "accessory open fail");
154
155 runOnUiThread(new Runnable() {
156 @Override
157 public void run() {
158 Toast toast = Toast.makeText(RangeActivity.this, "fail !!", Toast.LENGTH_LONG);
159 toast.show();
160
161 }
162 });
163
164 }
165 }
166
167 private void closeAccessory() {
168 try {
169 if (mFileDescriptor != null) {
170 mFileDescriptor.close();
171 }
172 } catch (IOException e) {
173 } finally {
174 mFileDescriptor = null;
175 mAccessory = null;
176 }
177 }
178
179 Runnable commRunnableTx = new Runnable() {
180 @Override
181 public void run() {
182
183 runOnUiThread(new Runnable() {
184 @Override
185 public void run() {
186 Toast toast = Toast.makeText(RangeActivity.this, "TX 1 !!", Toast.LENGTH_LONG);
187 toast.show();
188
189 }
190 });
191
192 try {
193 mOutputStream.write(bufferSendeRxTxFrequenz);
194 runOnUiThread(new Runnable() {
195 @Override
196 public void run() {
197 Toast toast = Toast.makeText(RangeActivity.this, "wurde gesendet !!", Toast.LENGTH_LONG);
198 toast.show();
199
200 }
201 });
202 } catch (IOException e) {
203 // TODO Auto-generated catch block
204 e.printStackTrace();
205 }
206
207 runOnUiThread(new Runnable() {
208 @Override
209 public void run() {
210 Toast toast = Toast.makeText(RangeActivity.this, "TX !!", Toast.LENGTH_LONG);
211 toast.show();
212
213 }
214 });
215
216 }
217 };
218 Runnable commRunnableRx = new Runnable() {
219 @Override
220 public void run() {
221
222 runOnUiThread(new Runnable() {
223 @Override
224 public void run() {
225 Toast toast = Toast.makeText(RangeActivity.this, "RX !!", Toast.LENGTH_LONG);
226 toast.show();
227
228 }
229 });
230 }
231 };
232
233 @Override
234 public boolean onCreateOptionsMenu(Menu menu) {
235 getMenuInflater().inflate(R.menu.activity_rage, menu);
236 return true;
237 }