안드로이드 스튜디오 OKHttp 라이브러리를 이용한 로그인 예제

OKHttp 라이브러리를 이용한 로그인 예제를 만들어봤다.

http://square.github.io/okhttp/ 에 가면 최신버전을 확인할 수 있다.

1. Gradle 추가

    compile 'com.squareup.okhttp3:okhttp:3.8.1'

    gradle 에 추가하고 Sync 까지 해준다.

2. AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.tistory.link2me.okhttplogin">     <uses-permission android:name="android.permission.INTERNET" />     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />     <uses-permission android:name="android.permission.READ_PHONE_STATE" />     <application         android:allowBackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:roundIcon="@mipmap/ic_launcher_round"         android:supportsRtl="true"         android:theme="@style/AppTheme">         <activity android:name=".Intro">             <intent-filter>                 <action android:name="android.intent.action.MAIN" />                 <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>         </activity>         <activity android:name=".Login" />         <activity android:name=".MainActivity" />     </application> </manifest> 기본적인 것만 추가했다.

3. OKHttpAPICAll 메소드

import android.os.Build; import com.tistory.link2me.common.AES256Cipher; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.security.InvalidAlgorithmParameterException; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import javax.crypto.BadPaddingException; import javax.crypto.IllegalBlockSizeException; import javax.crypto.NoSuchPaddingException; import okhttp3.FormBody; import okhttp3.HttpUrl; import okhttp3.OkHttpClient; import okhttp3.Request; import okhttp3.RequestBody; import okhttp3.Response; public class OKHttpAPICall {     //GET network request     public static String GET(OkHttpClient client, HttpUrl url) throws IOException {         Request request = new Request.Builder()                 .url(url)                 .build();         Response response = client.newCall(request).execute();         return response.body().string();     }     //POST network request     public static String POST(OkHttpClient client, String url, RequestBody body) throws IOException {         Request request = new Request.Builder()                 .url(url)                 .post(body)                 .build();         Response response = client.newCall(request).execute();         return response.body().string();     }     //Login request body     public static RequestBody LoginBody(String loginID, String loginPW, String deviceID) {         // 전달할 인자들         String username = null;         String password = null;         try {             username = AES256Cipher.AES_Encode(loginID, Value.AES256Key);             password = AES256Cipher.AES_Encode(loginPW, Value.AES256Key);         } catch (UnsupportedEncodingException e) {             e.printStackTrace();         } catch (NoSuchAlgorithmException e) {             e.printStackTrace();         } catch (NoSuchPaddingException e) {             e.printStackTrace();         } catch (InvalidKeyException e) {             e.printStackTrace();         } catch (InvalidAlgorithmParameterException e) {             e.printStackTrace();         } catch (IllegalBlockSizeException e) {             e.printStackTrace();         } catch (BadPaddingException e) {             e.printStackTrace();         }         return new FormBody.Builder()                 .add("action", "login")                 .add("format", "json")                 .add("loginID", username)                 .add("loginPW", password)                 .add("deviceID", deviceID)                 .add("phoneVersion", Build.VERSION.RELEASE)                 .add("phoneBrand", Build.BRAND)                 .add("phoneModel", Build.MODEL)                 .build();     } }

4. Login.java

import android.Manifest; import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.AsyncTask; import android.os.Build; import android.os.Bundle; import android.provider.Settings; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import android.widget.Toast; import java.io.IOException; import java.util.ArrayList; import java.util.List; import okhttp3.OkHttpClient; import static com.tistory.link2me.okhttplogin.OKHttpAPICall.LoginBody; public class Login extends AppCompatActivity {     String getDeviceID; // 스마트기기의 장치 고유값     EditText etId;     EditText etPw;     String loginID;     String loginPW;     CheckBox autologin;     Boolean autologinchk;     String idx;     public SharedPreferences settings;     private OkHttpClient client;     String response;     // 멀티 퍼미션 지정     private String[] permissions = {             Manifest.permission.READ_PHONE_STATE,             Manifest.permission.CALL_PHONE, // 전화걸기 및 관리             Manifest.permission.WRITE_CONTACTS, // 주소록 액세스 권한             Manifest.permission.WRITE_EXTERNAL_STORAGE, // 기기, 사진, 미디어, 파일 엑세스 권한             Manifest.permission.RECEIVE_SMS, // 문자 수신             Manifest.permission.CAMERA     };     private static final int MULTIPLE_PERMISSIONS = 101;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_login);         if (Build.VERSION.SDK_INT >= 23) { // 안드로이드 6.0 이상일 경우 퍼미션 체크             checkPermissions();         }         // 네트워크 연결상태 체크         if(NetworkConnection() == false){             NotConnected_showAlert();         }         etId = (EditText) findViewById(R.id.login_id_edit);         etPw = (EditText) findViewById(R.id.login_pw_edit);         autologin = (CheckBox) findViewById(R.id.autologinchk);         settings = getSharedPreferences("settings", Activity.MODE_PRIVATE);         autologinchk = settings.getBoolean("autologin", false);         if (autologinchk) {             etId.setText(settings.getString("loginID", ""));             etPw.setText(settings.getString("loginPW", ""));             autologin.setChecked(true);         }         if(!settings.getString("loginID", "").equals("")) etPw.requestFocus();         Button submit = (Button) findViewById(R.id.login_btn);         submit.setOnClickListener(new Button.OnClickListener(){             @Override             public void onClick(View view) {                 loginID = etId.getText().toString().trim();                 loginPW = etPw.getText().toString().trim();                 if(loginID != null && !loginID.isEmpty() && loginPW != null && !loginPW.isEmpty()){                     String url = Value.IPADDRESS + "/loginChk.php";                     // 단말기의 ID 정보를 얻기 위해서는 READ_PHONE_STATE 권한이 필요                     TelephonyManager mTelephony = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);                     if (mTelephony.getDeviceId() != null){                         getDeviceID = mTelephony.getDeviceId();  // 스마트폰 기기 정보                     } else {                         getDeviceID = Settings.Secure.getString(getApplicationContext().getContentResolver(), Settings.Secure.ANDROID_ID);                     }                     new AsyncLogin().execute(url,loginID, loginPW,getDeviceID);                 }             }         });     }     private  class AsyncLogin extends AsyncTask<String, Void, String> {         ProgressDialog pdLoading = new ProgressDialog(Login.this);         @Override         protected void onPreExecute() {             super.onPreExecute();             //this method will be running on UI thread             pdLoading.setMessage("\tValidating user...");             pdLoading.setCancelable(false);             pdLoading.show();         }         @Override         protected String doInBackground(String... params) {             client = new OkHttpClient();             try {                 response = OKHttpAPICall.POST(client, params[0], LoginBody(params[1], params[2],params[3]));                 Log.d("Response", response);                 return response;             } catch (IOException e) {                 e.printStackTrace();             }             return null;         }         protected void onPostExecute(String result){             pdLoading.dismiss();             if(Integer.parseInt(result) > 0){ // 로그인 정보 일치                 idx = result;                 Toast.makeText(getApplicationContext(),"로그인 성공", Toast.LENGTH_SHORT).show();                 startActivity(new Intent(getApplication(), MainActivity.class));                 finish(); // 현재 Activity 를 없애줌             } else if(result.equalsIgnoreCase("-1")){ // 등록된 단말기와 불일치                 deviceDismatch_showAlert();             } else if (result.equalsIgnoreCase("0")) {                 showAlert();             } else {                 Toast.makeText(getApplicationContext(), "서버로부터 정보가 잘못 전송되었습니다", Toast.LENGTH_SHORT).show();             }         }     }     public void onStop(){         // 어플리케이션이 화면에서 사라질때         super.onStop();         // 자동 로그인이 체크되어 있고, 로그인에 성공했으면 폰에 자동로그인 정보 저장         if (autologin.isChecked()) {             settings = getSharedPreferences("settings",Activity.MODE_PRIVATE);             SharedPreferences.Editor editor = settings.edit();             editor.putString("loginID", loginID);             editor.putString("loginPW", loginPW);             editor.putBoolean("autologin", true);             editor.putString("idx", idx);             editor.commit();         } else {             // 자동 로그인 체크가 해제되면 폰에 저장된 정보 모두 삭제             settings = getSharedPreferences("settings",    Activity.MODE_PRIVATE);             SharedPreferences.Editor editor = settings.edit();             editor.clear(); // 모든 정보 삭제             editor.commit();         }     }     public void deviceDismatch_showAlert(){         AlertDialog.Builder builder = new AlertDialog.Builder(Login.this);         builder.setTitle("등록단말 불일치");         builder.setMessage("최초 등록된 단말기가 아닙니다.\n" + "관리자에게 문의하여 단말기 변경신청을 하시기 바랍니다.")                 .setCancelable(false)                 .setPositiveButton("OK", new DialogInterface.OnClickListener() {                     public void onClick(DialogInterface dialog, int id) {                         dialog.dismiss();                     }                 });         AlertDialog alert = builder.create();         alert.show();     }     public void showAlert(){         AlertDialog.Builder builder = new AlertDialog.Builder(Login.this);         builder.setTitle("로그인 에러");         builder.setMessage("로그인 정보가 일치하지 않습니다.")                 .setCancelable(false)                 .setPositiveButton("OK", new DialogInterface.OnClickListener() {                     public void onClick(DialogInterface dialog, int id) {                         dialog.dismiss();                     }                 });         AlertDialog alert = builder.create();         alert.show();     }     private void NotConnected_showAlert() {         AlertDialog.Builder builder = new AlertDialog.Builder(Login.this);         builder.setTitle("네트워크 연결 오류");         builder.setMessage("사용 가능한 무선네트워크가 없습니다.\n" + "먼저 무선네트워크 연결상태를 확인해 주세요.")                 .setCancelable(false)                 .setPositiveButton("확인", new DialogInterface.OnClickListener() {                     public void onClick(DialogInterface dialog, int id) {                         finish(); // exit                         //application 프로세스를 강제 종료                         android.os.Process.killProcess(android.os.Process.myPid() );                     }                 });         AlertDialog alert = builder.create();         alert.show();     }     private boolean NetworkConnection() {         int[] networkTypes = {ConnectivityManager.TYPE_MOBILE, ConnectivityManager.TYPE_WIFI};         try {             ConnectivityManager manager = (ConnectivityManager) getSystemService (Context.CONNECTIVITY_SERVICE);             for (int networkType : networkTypes) {                 NetworkInfo activeNetwork = manager.getActiveNetworkInfo();                 if(activeNetwork != null && activeNetwork.getType() == networkType){                     return true;                 }             }         } catch (Exception e) {             return false;         }         return false;     }     private boolean checkPermissions() {         int result;         List<String> permissionList = new ArrayList<>();         for (String pm : permissions) {             result = ContextCompat.checkSelfPermission(this, pm);             if (result != PackageManager.PERMISSION_GRANTED) {                 permissionList.add(pm);             }         }         if (!permissionList.isEmpty()) {             ActivityCompat.requestPermissions(this, permissionList.toArray(new String[permissionList.size()]), MULTIPLE_PERMISSIONS);             return false;         }         return true;     }     @Override     public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {         switch (requestCode) {             case MULTIPLE_PERMISSIONS: {                 if (grantResults.length > 0) {                     for (int i = 0; i < permissions.length; i++) {                         if (permissions[i].equals(this.permissions[i])) {                             if (grantResults[i] != PackageManager.PERMISSION_GRANTED) {                                 showToast_PermissionDeny();                             }                         }                     }                 } else {                     showToast_PermissionDeny();                 }                 return;             }         }     }     private void showToast_PermissionDeny() {         Toast.makeText(this, "권한 요청에 동의 해주셔야 이용 가능합니다. 설정에서 권한 허용 하시기 바랍니다.", Toast.LENGTH_SHORT).show();         finish();     } }

5. Value.java

import android.app.Activity; public class Value extends Activity {     public static final String IPADDRESS = "http://192.168.0.100";     public static final String VERSION = "1.0.0"; // App Version     public static final String AES256Key = "hijklmn123456opqrstuvwxyz"; }

위 예제에 사용된 java 및 AndroidManifest.xml 소스 파일

OKHttp_Login.zip

참조 사이트

https://www.sitepoint.com/consuming-web-apis-in-android-with-okhttp/