Wie konvertiert man einzelne Zeichenfolge zu JsonArray in Android?

Question

Ich muss einen String [] in ein JsonArray konvertieren und ich weiß nicht wie. Ich bin neu in Android-Entwicklung Ich möchte Anrufprotokolldetails in MySQL-Datenbank einfügen. also, von Android-Seite bekomme ich eine Zeichenfolge und aber ich weiß nicht, wie diese Zeichenfolge in Jsonarray konvertieren. plz helfen, dieses Problem Dank im Voraus zu klären,

Hier ist mein Java-Code .......

public class MainActivity extends Activity { 
TextView textView; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    textView = (TextView) findViewById(R.id.lv); 
    getCallDetails(); 
} 

private void getCallDetails() 
{ 
    StringBuffer sb = new StringBuffer(); 
    String strOrder = android.provider.CallLog.Calls.DATE + " DESC"; 

    Cursor managedCursor = managedQuery(CallLog.Calls.CONTENT_URI, null,null, null, strOrder); 
    int number1 = managedCursor.getColumnIndex(CallLog.Calls.NUMBER); 
    int type1 = managedCursor.getColumnIndex(CallLog.Calls.TYPE); 
    int duration1 = managedCursor.getColumnIndex(CallLog.Calls.DURATION); 

    sb.append("Call Log :"); 

    while (managedCursor.moveToNext()) 
    { 
     final String number = managedCursor.getString(number1); 
     final String type2 = managedCursor.getString(type1); 
     final String date = managedCursor.getString(managedCursor.getColumnIndexOrThrow("date")).toString(); 
     java.util.Date date1 = new java.util.Date(Long.valueOf(date)); 
     final String duration = managedCursor.getString(duration1); 
     String type = null; 

     Log.e("abc",date.toString()); 
     Log.e("abc",date1.toString()); 

     final String fDate = date1.toString(); 


     int callcode = Integer.parseInt(type2); 
     switch (callcode) 
     { 
      case CallLog.Calls.OUTGOING_TYPE: 
       type = "Outgoing"; 
       break; 
      case CallLog.Calls.INCOMING_TYPE: 
       type = "Incoming"; 
       break; 
      case CallLog.Calls.MISSED_TYPE: 
       type = "Missed"; 
       break; 
     } 
     sb.append("\nPhone Number:--- " + number + ""); 
     sb.append(" \nCall Type:--- " + type + " "); 
     sb.append("\nCall Date:--- " + date1 + ""); 
     sb.append ("\nCall duration in sec :--- " + duration); 
     sb.append("\n----------------------------------"); 

     class getCallDetails extends AsyncTask<Void,Void,String> 
     { 
      @Override 
      protected String doInBackground(Void... params) 
      { 
       HashMap<String,String> param = new HashMap<String, String>(); 
       param.put(Connect.KEY_NUMBER,number); 
       param.put(Connect.KEY_TYPE,type2); 
       param.put(Connect.KEY_DATE,fDate); 
       param.put(Connect.KEY_DURATION,duration); 

       RequestHandler rh = new RequestHandler(); 
       String res = rh.sendPostRequest(Connect.URL_ADD, param); 
       return res; 
      } 

     } 

     getCallDetails idata = new getCallDetails(); 
     idata.execute(); 
    } 
    managedCursor.close(); 
    textView.setText(sb); 

    } 
    } 

Answer 1

die Sie interessieren,

// Create JSONArray 
JSONArray jArray = new JSONArray(); 
while (managedCursor.moveToNext()) 
{ 
    final String number = managedCursor.getString(number1); 
    final String type2 = managedCursor.getString(type1); 
    final String date = managedCursor.getString(managedCursor.getColumnIndexOrThrow("date")).toString(); 
    Date date1 = new Date(Long.valueOf(date)); 
    final String fDate = date1.toString(); 
    final String duration = managedCursor.getString(duration1); 
    String type = null; 

    // Create JSONObject 
    JSONObject item = new JSONObject(); 

    // add the items to JSONObject 
    item.put("number", number); 
    item.put("type2", type2); 
    item.put("fDate", fDate); 
    item.put("duration", duration); 

    // add the JSONObject to JSONArray 
    jArray.put(item); 
} 
managedCursor.close(); 

System.out.println(jArray.toString()); 

Answer 2

Es ist easy.You einer der Konstrukteure von JSONArray Klasse verwenden kann.

JSONArray jArr = new JSONArray(strArr) 

wo strArr ist Ihr String-Array.

hier Mehr: https://developer.android.com/reference/org/json/JSONArray.html#JSONArray(java.lang.Object)