Über Wifi mit dem PC kommunizieren

1public class ActivityTester extends Activity {
2
3 private TextView myText;
4 private Button myButton;
5
6 /** Called when the activity is first created. */
7 @Override
8 public void onCreate(Bundle savedInstanceState) {
9 super.onCreate(savedInstanceState);
10 setContentView(R.layout.test);
11 myText = (TextView) findViewById(R.id.test_text);
12 myButton = (Button) findViewById(R.id.test_button);
13
14 myButton.setOnClickListener(new View.OnClickListener() {
15 public void onClick(View view) {
16 //ClientSocket Service soll gestartet werden
17 }
18 });
19 }
20
21 private ServiceConnection svcConn = new ServiceConnection() {
22 @Override
23 public void onServiceConnected(ComponentName name, IBinder service) {
24 //Was muss hier rein?
25 }
26 @Override
27 public void onServiceDisconnected(ComponentName name) {
28 }
29 };
30
31}

1public class ClientSocket extends Service{
2
3 private static final String TAG = ClientSocket.class.getSimpleName();
4
5
6 ClientSocket() throws IOException {
7 Socket server = new Socket("IP des PCs", 1234);
8 InputStream input = server.getInputStream();
9 OutputStream output = server.getOutputStream();
10 output.write(5);
11 output.write(10);
12 output.flush();
13 System.out.println(input.read()); //Sollte an sich in der Activity myText zugewiesen werden
14 server.close();
15 input.close();
16 output.close();
17 }
18
19 public void onCreate() {
20 Log.d(TAG, "onCreate(): ClientSocket starten...");
21 try {
22 new ClientSocket();
23 } catch(IOException e) {
24 System.out.print(e);
25 }
26 }
27
28 @Override
29 public IBinder onBind(Intent arg0) {
30 Log.d(TAG, "onBind(): entered...");
31 return null;
32 }
33}

1public class MyServerSocket {
2
3 ServerSocket server = new ServerSocket(1234);
4
5 MyServerSocket() throws IOException {
6 while(true) {
7 Socket client = server.accept();
8 InputStream input = client.getInputStream();
9 OutputStream output = client.getOutputStream();
10 int zahl1 = input.read();
11 int zahl2 = input.read();
12 System.out.println("zahl1:" + zahl1);
13 System.out.println("zahl2:" + zahl2);
14 output.write(zahl1 + zahl2);
15 output.flush();
16 input.close();
17 output.close();
18 }
19 }
20
21 public static void main(String[] args) {
22 try {
23 new MyServerSocket();
24 } catch(IOException e) {
25 System.out.println(e);
26 }
27 }
28
29}

1<uses-permission android:name="android.permission.INTERNET" />

1public class ActivityTester extends Activity {
2
3 private TextView myText;
4 private Button myButton;
5 private EditText myTextField;
6
7 /** Called when the activity is first created. */
8 @Override
9 public void onCreate(Bundle savedInstanceState) {
10 super.onCreate(savedInstanceState);
11 setContentView(R.layout.test);
12 myText = (TextView) findViewById(R.id.test_text);
13 myButton = (Button) findViewById(R.id.test_button);
14 myTextField = (EditText) findViewById(R.id.texteingabefeld);
15
16 myButton.setOnClickListener(new View.OnClickListener() {
17 public void onClick(View view) {
18 myText.setText("Button wurde gedrückt!");
19
20 if (myTextField.getText().toString().length() != 0) {
21 String aStr = myTextField.getText().toString();
22 try {
23 Socket server = new Socket("IP des PCs", 1234);
24 BufferedReader input = new BufferedReader(
25 new InputStreamReader(server.getInputStream()));
26 BufferedWriter output = new BufferedWriter(
27 new OutputStreamWriter(server.getOutputStream()));
28 output.write(aStr);
29 output.newLine();
30 output.flush();
31 myText.setText("Antwort vom Server: "
32 + input.readLine());
33 server.close();
34 input.close();
35 output.close();
36 } catch (IOException e) {
37 myText.setText(e.toString());
38 }
39 } else {
40 myText.setText("Bitte etwas eingeben!");
41 }
42 }
43 });
44 }
45}

1public class MyServerSocket {
2
3 ServerSocket server = new ServerSocket(1234);
4
5 MyServerSocket() throws IOException {
6 System.out.println("Server gestartet!");
7 while (true) {
8 Socket client = server.accept();
9 BufferedReader input = new BufferedReader(new InputStreamReader(
10 client.getInputStream()));
11
12 BufferedWriter output = new BufferedWriter(new OutputStreamWriter(
13 client.getOutputStream()));
14 String nachricht = input.readLine();
15 System.out.println("Nachricht vom Client: " + nachricht);
16 output.write(nachricht);
17 output.newLine();
18 output.flush();
19 input.close();
20 output.close();
21 }
22 }
23
24 public static void main(String[] args) {
25 try {
26 new MyServerSocket();
27 } catch (IOException e) {
28 System.out.println(e);
29 }
30 }
31}