私の家のLANのデスクトップPCのサーバソケットに接続するために、私のアプリ(Android 7.1.2で動作中)を取得するのに数時間お時間を割いています。リモートtcpソケットに接続するとアプリがクラッシュする
実行するとpublic class MainActivity extends AppCompatActivity {
static final String SERVER_IP = "192.168.XXX.XXX"; // X's are replaced by actual IP
static final int PORT = 30000;
Socket clientSocket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button btReceive = (Button) findViewById(R.id.btReceive);
final TextView txtReceivedText = (TextView) findViewById(R.id.txtReceivedText);
final TextView txtStatus = (TextView) findViewById(R.id.txtStatus);
btReceive.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
txtStatus.setText("Received button pressed.");
try {
Socket s = new Socket(SERVER_IP, PORT);
BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
final String st = input.readLine();
txtReceivedText.setText(st);
s.close();
} catch (IOException e) {
e.printStackTrace();
}
});
}
}
私はAndroidのスタジオで、コンソールに出力を得る:
...
Waiting for process to come online
Connected to process 16980 on device samsung-gt_i9515-a72266ed
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
W/art: Before Android 4.1, method int android.support.v7.widget.ListViewCompat.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.jonas.network_connector, PID: 16980
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:333)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:196)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:356)
at java.net.Socket.connect(Socket.java:605)
at java.net.Socket.connect(Socket.java:554)
at java.net.Socket.<init>(Socket.java:431)
at java.net.Socket.<init>(Socket.java:210)
at com.example.jonas.network_connector.MainActivity$2.onClick(MainActivity.java:88)
at android.view.View.performClick(View.java:5637)
at android.view.View$PerformClick.run(View.java:22433)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6186)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
I/Process: Sending signal. PID: 16980 SIG: 9
Application terminated.
私は(同様とアンドロイド)プログラミングソケットに新たなんだので、私はに進む方法がわかりませんエラーを見つけます。
私のマニフェストは、許可ラインがあります。
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />