{"id":596,"date":"2022-11-14T11:44:35","date_gmt":"2023-03-28T14:35:59","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/okhttp%e3%81%aeandroid%e3%81%ae%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab%e3%83%81%e3%83%a5%e3%83%bc%e3%83%88%e3%83%aa%e3%82%a2%e3%83%ab\/"},"modified":"2025-08-01T00:55:37","modified_gmt":"2025-07-31T15:55:37","slug":"okhttp%e3%81%aeandroid%e3%81%ae%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab%e3%83%81%e3%83%a5%e3%83%bc%e3%83%88%e3%83%aa%e3%82%a2%e3%83%ab","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/okhttp%e3%81%aeandroid%e3%81%ae%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab%e3%83%81%e3%83%a5%e3%83%bc%e3%83%88%e3%83%aa%e3%82%a2%e3%83%ab\/","title":{"rendered":"OkHttp\u306eAndroid\u306e\u30b5\u30f3\u30d7\u30eb\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb"},"content":{"rendered":"

OkHttp\u306f\u30012013\u5e74\u306bSquare\u306b\u3088\u3063\u3066\u5c0e\u5165\u3055\u308c\u305f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308a\u3001HTTP\u30d9\u30fc\u30b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u53d7\u4fe1\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

OkHttp \u30a2\u30f3\u30c9\u30ed\u30a4\u30c9<\/h2>\n

\u6700\u521d\u3001Android\u306b\u306fHTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c2\u3064\u3057\u304b\u306a\u304b\u3063\u305f\uff1aHttpURLConnection\u3068Apache HTTP Client\u3002\u3053\u308c\u3089\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001Web\u304b\u3089\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u304a\u3088\u3073\u53d7\u4fe1\u3059\u308b\u305f\u3081\u306bAsyncTask\u307e\u305f\u306f\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30b9\u30ec\u30c3\u30c9\u306e\u30e1\u30bd\u30c3\u30c9\u5185\u306b\u5927\u91cf\u306e\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u3001\u3053\u308c\u3089\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306fHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3084\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30ea\u30f3\u30b0\u306e\u30ad\u30e3\u30f3\u30bb\u30eb\u306b\u5236\u9650\u304c\u3042\u308a\u307e\u3057\u305f\u3002OkHttp for Android\u306f\u3001\u4f59\u5206\u306a\u4f9d\u5b58\u95a2\u4fc2\u3092\u4f7f\u7528\u305b\u305a\u306b\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u306aJava Socket\u3092\u76f4\u63a5\u4f7f\u7528\u3057\u3066HttpURLConnection\u304a\u3088\u3073Apache Client\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n

\u30aa\u30fc\u30b1\u30fc\u30c6\u30a3\u30d7\u30a2\u30f3\u30c9\u30ed\u30a4\u30c9\u306e\u5229\u70b9<\/h3>\n

OkHttp\u304c\u3082\u305f\u3089\u3059\u3044\u304f\u3064\u304b\u306e\u5229\u70b9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059:<\/p>\n

    \n
  1. \n
      \u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30ea\u30f3\u30b0<\/ol>\n<\/li>\n<\/ol>\n

       <\/p>\n

        \n
      1. \n
          GZIP\u5727\u7e2e<\/ol>\n<\/li>\n<\/ol>\n

           <\/p>\n

            \n
          1. \n
              \u30ad\u30e3\u30c3\u30b7\u30e5<\/ol>\n<\/li>\n<\/ol>\n

               <\/p>\n

                \n
              1. \n
                  \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u554f\u984c\u304b\u3089\u306e\u56de\u5fa9<\/ol>\n<\/li>\n<\/ol>\n

                   <\/p>\n

                    \n
                  1. \n
                      \u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/ol>\n<\/li>\n<\/ol>\n

                       <\/p>\n

                        \n
                      1. \n
                          \u518d\u8a66\u884c<\/ol>\n<\/li>\n<\/ol>\n

                           <\/p>\n

                            \u540c\u671f\u304a\u3088\u3073\u975e\u540c\u671f\u30b3\u30fc\u30eb\u306e\u30b5\u30dd\u30fc\u30c8<\/ol>\n

                            \u540c\u671f\u547c\u3073\u51fa\u3057 vs \u975e\u540c\u671f\u547c\u3073\u51fa\u3057<\/h3>\n
                              \n
                            • Synchronous calls require an AsyncTask wrapper around it. That means it doesn\u2019t support cancelling a request. Also, AsyncTasks generally leak the Activity\u2019s context, which is not preferred.<\/li>\n
                            • Asynchronous Calling is the recommneded way since it supports native cancelling, tagging multiple requests and canceling them all with a single method call (by invoking the cancel on the Acitivty instance inside the onPause or onDestroy method).<\/li>\n<\/ul>\n

                              OkHttp android\u306e\u5b9f\u88c5\u3092\u8abf\u3079\u308b\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n

                              compile 'com.squareup.okhttp3:okhttps:3.4.1'\r\n<\/code><\/pre>\n
                              AndroidManifest.xml\u30d5\u30a1\u30a4\u30eb\u5185\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u8a31\u53ef\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                              <uses-permission android:name=\"android.permission.INTERNET\"\/>\r\n<\/code><\/pre>\n
                              OkHttp\u306eAndroid\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/h3>\n
                              \u4ee5\u4e0b\u306f\u3001\u540c\u671f\u547c\u3073\u51fa\u3057\u306e\u305f\u3081\u306eMainActivity.java\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                              package com.scdev.okhttp;\r\n\r\nimport android.os.AsyncTask;\r\nimport android.support.v7.app.AppCompatActivity;\r\nimport android.os.Bundle;\r\nimport android.util.Log;\r\nimport android.view.View;\r\nimport android.widget.Button;\r\nimport android.widget.TextView;\r\n\r\nimport org.json.JSONException;\r\nimport org.json.JSONObject;\r\n\r\nimport java.io.IOException;\r\n\r\nimport okhttp3.Call;\r\nimport okhttp3.Callback;\r\nimport okhttp3.MediaType;\r\nimport okhttp3.OkHttpClient;\r\nimport okhttp3.Request;\r\nimport okhttp3.RequestBody;\r\nimport okhttp3.Response;\r\n\r\npublic class MainActivity extends AppCompatActivity {\r\n\r\n    OkHttpClient client = new OkHttpClient();\r\n\r\n    TextView txtString;\r\n\r\n    public String url= \"https:\/\/reqres.in\/api\/users\/2\";\r\n\r\n\r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_main);\r\n\r\n        txtString= (TextView)findViewById(R.id.txtString);\r\n\r\n        OkHttpHandler okHttpHandler= new OkHttpHandler();\r\n        okHttpHandler.execute(url);\r\n    }\r\n\r\n    public class OkHttpHandler extends AsyncTask {\r\n\r\n        OkHttpClient client = new OkHttpClient();\r\n\r\n        @Override\r\n        protected String doInBackground(String...params) {\r\n\r\n            Request.Builder builder = new Request.Builder();\r\n            builder.url(params[0]);\r\n            Request request = builder.build();\r\n\r\n            try {\r\n                Response response = client.newCall(request).execute();\r\n                return response.body().string();\r\n            }catch (Exception e){\r\n                e.printStackTrace();\r\n            }\r\n            return null;\r\n        }\r\n\r\n        @Override\r\n        protected void onPostExecute(String s) {\r\n            super.onPostExecute(s);\r\n            txtString.setText(s);\r\n        }\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n
                              \u975e\u540c\u671f\u547c\u3073\u51fa\u3057\u3067\u306f\u3001MainActivity.java\u306f\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n
                              package com.scdev.okhttp;\r\n\r\nimport android.os.AsyncTask;\r\nimport android.support.v7.app.AppCompatActivity;\r\nimport android.os.Bundle;\r\nimport android.util.Log;\r\nimport android.view.View;\r\nimport android.widget.Button;\r\nimport android.widget.TextView;\r\n\r\nimport org.json.JSONException;\r\nimport org.json.JSONObject;\r\n\r\nimport java.io.IOException;\r\n\r\nimport okhttp3.Call;\r\nimport okhttp3.Callback;\r\nimport okhttp3.MediaType;\r\nimport okhttp3.OkHttpClient;\r\nimport okhttp3.Request;\r\nimport okhttp3.RequestBody;\r\nimport okhttp3.Response;\r\n\r\npublic class MainActivity extends AppCompatActivity {\r\n    \r\n    TextView txtString;\r\n    public String url= \"https:\/\/reqres.in\/api\/users\/2\";\r\n\r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_main);\r\n\r\n        txtString= (TextView)findViewById(R.id.txtString);\r\n\r\n        try {\r\n            run();\r\n        } catch (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n\r\n    void run() throws IOException {\r\n\r\n        OkHttpClient client = new OkHttpClient();\r\n\r\n        Request request = new Request.Builder()\r\n                .url(url)\r\n                .build();\r\n\r\n        client.newCall(request).enqueue(new Callback() {\r\n            @Override\r\n            public void onFailure(Call call, IOException e) {\r\n                call.cancel();\r\n            }\r\n\r\n            @Override\r\n            public void onResponse(Call call, Response response) throws IOException {\r\n\r\n                final String myResponse = response.body().string();\r\n\r\n                MainActivity.this.runOnUiThread(new Runnable() {\r\n                    @Override\r\n                    public void run() {\r\n                        txtString.setText(myResponse);\r\n                    }\r\n                });\r\n\r\n            }\r\n        });\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n
                              \u3053\u3053\u304b\u3089\u30c6\u30b9\u30c8API\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002\u8fd4\u3063\u3066\u304d\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u6587\u5b57\u5217\u306fJSON\u5f62\u5f0f\u3067\u3001\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u4ed6\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9API\uff08\u4f8b\uff1aGitHub API\u3001Stack Overflow\u306a\u3069\uff09\u3082\u8a66\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                              OkHttp\u306e\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u4f8b<\/h3>\n
                              \u3082\u3057\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u3042\u308c\u3070\u3001HttpUrl.Builder\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306b\u305d\u308c\u3089\u3092\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                              HttpUrl.Builder urlBuilder = HttpUrl.parse(\"https:\/\/httpbin.org\/get).newBuilder();\r\nurlBuilder.addQueryParameter(\"website\", \"www.scdev.com\");\r\nurlBuilder.addQueryParameter(\"tutorials\", \"android\");\r\nString url = urlBuilder.build().toString();\r\n\r\nRequest request = new Request.Builder()\r\n                     .url(url)\r\n                     .build();\r\n<\/code><\/pre>\n
                              \u4e0a\u8a18\u306eURL\u306fhttps:\/\/resttesttest.com\/\u304b\u3089\u5165\u624b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n
                              OkHttp\u306eAndroid\u30d8\u30c3\u30c0\u30fc\u306e\u4f8b<\/h3>\n
                              \u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u8a8d\u8a3c\u3055\u308c\u305f\u30af\u30a8\u30ea\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u3042\u308c\u3070\u3001\u305d\u308c\u3089\u306f\u30d8\u30c3\u30c0\u30fc\u306e\u5f62\u5f0f\u3067\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                              Request request = new Request.Builder()\r\n    .header(\"Authorization\", \"replace this text with your token\")\r\n    .url(\"your api url\")\r\n    .build();\r\n<\/code><\/pre>\n
                              JSON\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406<\/h3>\n
                              \u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306b\u3001JSON\u30c7\u30fc\u30bf\u3092\u30d1\u30fc\u30b9\u3057\u3066\u95a2\u9023\u3059\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3089\u3092TextView\u306b\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                              client.newCall(request).enqueue(new Callback() {\r\n            @Override\r\n            public void onFailure(Call call, IOException e) {\r\n                call.cancel();\r\n            }\r\n\r\n            @Override\r\n            public void onResponse(Call call, Response response) throws IOException {\r\n\r\n                final String myResponse = response.body().string();\r\n\r\n                MainActivity.this.runOnUiThread(new Runnable() {\r\n                    @Override\r\n                    public void run() {\r\n                        try {\r\n\r\n                            JSONObject json = new JSONObject(myResponse);\r\n                            txtString.setText(json.getJSONObject(\"data\").getString(\"first_name\")+ \" \"+json.getJSONObject(\"data\").getString(\"last_name\"));\r\n                        } catch (JSONException e) {\r\n                            e.printStackTrace();\r\n                        }\r\n                    }\r\n                });\r\n\r\n            }\r\n        });\r\n<\/code><\/pre>\n
                              OkHttp\u30a2\u30f3\u30c9\u30ed\u30a4\u30c9\u306ePOST\u306e\u4f8b<\/h3>\n
                              \u3053\u308c\u307e\u3067\u3001\u3044\u304f\u3064\u304b\u306eAPI\u3092\u547c\u3073\u51fa\u3057\u3066\u5fdc\u7b54\u3092\u5f97\u308b\u65b9\u6cd5\u3092\u898b\u3066\u304d\u307e\u3057\u305f\u3002\u30b5\u30fc\u30d0\u30fc\u306b\u30c7\u30fc\u30bf\u3092\u6295\u7a3f\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u69cb\u7bc9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
                              public class MainActivity extends AppCompatActivity {\r\n\r\n    public String postUrl= \"https:\/\/reqres.in\/api\/users\/\";\r\n    public String postBody=\"{\\n\" +\r\n            \"    \\\"name\\\": \\\"morpheus\\\",\\n\" +\r\n            \"    \\\"job\\\": \\\"leader\\\"\\n\" +\r\n            \"}\";\r\n\r\n    public static final MediaType JSON = MediaType.parse(\"application\/json; charset=utf-8\");\r\n\r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_main);\r\n\r\n        try {\r\n            postRequest(postUrl,postBody);\r\n        } catch (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n\r\n    void postRequest(String postUrl,String postBody) throws IOException {\r\n\r\n        OkHttpClient client = new OkHttpClient();\r\n\r\n        RequestBody body = RequestBody.create(JSON, postBody);\r\n\r\n        Request request = new Request.Builder()\r\n                .url(postUrl)\r\n                .post(body)\r\n                .build();\r\n\r\n        client.newCall(request).enqueue(new Callback() {\r\n            @Override\r\n            public void onFailure(Call call, IOException e) {\r\n                call.cancel();\r\n            }\r\n\r\n            @Override\r\n            public void onResponse(Call call, Response response) throws IOException {\r\n                Log.d(\"TAG\",response.body().string());\r\n            }\r\n        });\r\n    }\r\n}\r\n<\/code><\/pre>\n
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                              OkHttp\u306eAndroid\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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