如何調用需要基本認證的rest api？

任何人都可以用我當前的代碼來幫忙嗎？目前，我能夠從存儲在我的原始文件夾中的json文件中繪製和解析json數據，並將其顯示在android studio的可滾動textview中。但是，我希望直接從其他API中繪製數據，並將其顯示在列表視圖中。但是，我不確定這些代碼。任何幫助表示讚賞。謝謝。如何調用需要基本認證的rest api？

API的例子：

API：測試/ API /位置/ V2 /客戶

基本身份驗證：用戶名：test，密碼：測試

JSON實例：

{ 
"macAddress": "00:00:2a:01:00:48", 
"mapInfo": { 
    "mapHierarchyString": "CiscoCampus>Building 9>IDEAS!>CakeBread", 
    "floorRefId": "723413320329068650", 
    "floorDimension": { 
    "length": 74.1, 
    "width": 39, 
    "height": 15, 
    "offsetX": 0, 
    "offsetY": 0, 
    "unit": "FEET" 
    }, 
    "image": { 
    "imageName": "domain_0_1462212406005.PNG", 
    "zoomLevel": 4, 
    "width": 568, 
    "height": 1080, 
    "size": 1080, 
    "maxResolution": 8, 
    "colorDepth": 8 
    }, 
    "tagList": [ 
    "test", 
    "Entrance", 
    "Restroom", 
    "Coffee & Snack", 
    "Men's Clothing", 
    "puma" 
    ] 
}, 
"mapCoordinate": { 
    "x": 17.934856, 
    "y": 23.121172, 
    "z": 0, 
    "unit": "FEET" 
}, 
"currentlyTracked": true, 
"confidenceFactor": 56, 
"statistics": { 
    "currentServerTime": "2017-02-20T15:49:30.155+0000", 
    "firstLocatedTime": "2016-11-02T11:34:32.077+0000", 
    "lastLocatedTime": "2017-02-20T15:49:27.690+0000", 
    "maxDetectedRssi": { 
    "apMacAddress": "00:2b:01:00:0a:00", 
    "band": "IEEE_802_11_B", 
    "slot": 0, 
    "rssi": -44, 
    "antennaIndex": 0, 
    "lastHeardInSeconds": 3 
    } 
}, 
"historyLogReason": null, 
"geoCoordinate": null, 
"networkStatus": "ACTIVE", 
"changedOn": 1487605767690, 
"ipAddress": [ 
    "10.10.20.231" 
], 
"userName": "", 
"ssId": "test", 
"sourceTimestamp": null, 
"band": "IEEE_802_11_B", 
"apMacAddress": "00:2b:01:00:0a:00", 
"dot11Status": "ASSOCIATED", 
"manufacturer": "Trw", 
"areaGlobalIdList": [ 
    43, 
    3, 
    2, 
    1, 
    44, 
    27, 
    45, 
    58, 
    59, 
    60, 
    87, 
    81, 
    42, 
    111 
], 
"detectingControllers": "10.10.20.90", 
"bytesSent": 154, 
"bytesReceived": 140, 
"guestUser": false

}，

基於json的例子，我想檢索馬cAddress，ip地址，floorRefId和firstLocatedTime在我的列表視圖顯示它

我目前的代碼：

public class AttendanceList extends AppCompatActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    getSupportActionBar().hide(); //<< this 
    setContentView(R.layout.activity_attendance_list); 

    Bundle extras = getIntent().getExtras(); 
    String ClassValue = extras.getString("ClassSpinnerValue"); 
    String LessonValue = extras.getString("LessonSpinnerValue"); 
    String LocationValue = extras.getString("LocationSpinnerValue"); 
    final TextView classV = (TextView) findViewById(R.id.tv_class); 
    final TextView lessonV = (TextView) findViewById(R.id.tv_lesson); 
    final TextView locationV = (TextView) findViewById(R.id.tv_location); 
    classV.setText(ClassValue); 
    lessonV.setText(LessonValue); 
    locationV.setText(LocationValue); 

    Button SubmitAttendance = (Button) findViewById(R.id.btn_subattendance); 
    SubmitAttendance.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent i = new Intent(AttendanceList.this, AttendanceMain.class); 
      Toast.makeText(AttendanceList.this,"Attendance Submitted", 
        Toast.LENGTH_SHORT).show(); 
      startActivity(i); 
     } 
    }); 

} 

public void loadGrades (View v) { 

     Resources res = getResources(); 

     InputStream is = res.openRawResource(R.raw.student_device); 

     Scanner scanner = new Scanner(is); 

     StringBuilder builder = new StringBuilder(); 

     while (scanner.hasNextLine()) { 
      builder.append(scanner.nextLine()); 
     } 

     parseJson(builder.toString()); 

} 

private void parseJson(String s) { 
    TextView txtDisplay =(TextView) findViewById(R.id.tv_display); 

    StringBuilder builder = new StringBuilder(); 

    try { 
     JSONObject root = new JSONObject(s); 

     JSONObject student = root.getJSONObject("student-information"); 


     JSONArray courses = student.getJSONArray("courses"); 

     for (int i = 0; i < courses.length(); i++) { 
      JSONObject course = courses.getJSONObject(i); 

      builder.append(course.getInt("username")) 
        .append("") 
        .append(course.get("usernameunique")) 
        .append("\n"); 
      builder.append("Location: ") 
        .append(course.getLong("floorRefId")).append("\n\n");; 
     } 


    } 

    catch (JSONException e) { 
     e.printStackTrace(); 
    } 

    txtDisplay.setMovementMethod(new ScrollingMovementMethod()); 
    txtDisplay.setText(builder.toString()); 
}

}

來源

2017-02-20 Joel

您可以使用Retrofit庫與Web服務進行交互。它內在使用Gson庫來解析Json對象。例如： - http://www.vogella.com/tutorials/Retrofit/article.html –