AndroidでHttps通信しています。
https://akira-watson.com/android/httpurlconnection-post.html
https://www.youtube.com/watch?v=ryY7Dy3z-7Q
なども試しましたがうまく行きません。
以下のプログラムは上記リンクの下のものですが、動きません。
何か根本的に問題があるようにも感じていますが、何が問題あるかご教授ください。
Manifestで以下は記載済みです。
<uses-permission android:name="android.permission.INTERNET" />
Java
1public class MainActivity extends AppCompatActivity { 2 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 super.onCreate(savedInstanceState); 6 setContentView(R.layout.activity_main); 7 } 8 9 @Override 10 protected void onStart() { 11 super.onStart(); 12 try { 13 TextView outputView = (TextView)findViewById(R.id.outputPost); 14 URL aUrl = new URL("https://t.hogehoge.biz/test.php"); 15 16 HttpsURLConnection con = (HttpsURLConnection)aUrl.openConnection(); 17 18 String urlParameters = "a=1"; 19 con.setRequestMethod("POST"); 20 con.setRequestProperty("application/json", "Accept"); 21 22 con.setDoOutput(true); 23 DataOutputStream dStream = new DataOutputStream(con.getOutputStream()); 24 dStream.writeBytes(urlParameters); 25 dStream.flush(); 26 dStream.close(); 27 28 // HTTPレスポンスコード 29 int status = con.getResponseCode(); 30 31 String output = "Request URL:" + aUrl; 32 33 BufferedReader br = new BufferedReader( new InputStreamReader(con.getInputStream())); 34 String line = ""; 35 StringBuilder responseOutput = new StringBuilder(); 36 37 while ( (line = br.readLine()) != null) { 38 responseOutput.append(line); 39 } 40 br.close(); 41 42 output += System.getProperty("line.separator") + responseOutput.toString(); 43 outputView.setText(output); 44 45 } catch (MalformedURLException e) { 46 e.printStackTrace(); 47 } catch (IOException e) { 48 e.printStackTrace(); 49 } 50 51 } 52}
01-22 19:06:16.060 19301-19301/com.example.androidtesthttps E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.androidtesthttps, PID: 19301 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidtesthttps/com.example.androidtesthttps.MainActivity}: android.os.NetworkOnMainThreadException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2534) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2608) at android.app.ActivityThread.access$800(ActivityThread.java:178) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1470) at android.os.Handler.dispatchMessage(Handler.java:111) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5637) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:959) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754) Caused by: android.os.NetworkOnMainThreadException at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1162) at java.net.InetAddress.lookupHostByName(InetAddress.java:425) at java.net.InetAddress.getAllByNameImpl(InetAddress.java:259) at java.net.InetAddress.getAllByName(InetAddress.java:221) at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29) at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232) at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124) at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:278) at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:216) at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:392) at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:107) at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:218) at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218) at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:25) at com.example.androidtesthttps.MainActivity.onStart(MainActivity.java:38) at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1244) at android.app.Activity.performStart(Activity.java:6108) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2491)
回答1件
あなたの回答
tips
プレビュー
バッドをするには、ログインかつ
こちらの条件を満たす必要があります。
2018/01/22 11:21
2018/01/22 11:23