如何在android中将单个字符串转换为JsonArray？

我需要将String []转换为JsonArray，我不知道如何。 我是Android开发新手我想在MySQL数据库中插入调用日志详细信息。 所以，从android方面我得到一个字符串，但我不知道如何将该字符串转换为Jsonarray。 PLZ有助于提前解决这个问题

这是我的java代码…….

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 { @Override protected String doInBackground(Void... params) { HashMap param = new HashMap(); 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

尝试这个，

 // 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

这很简单。您可以使用JSONArray类的一个构造函数。

 JSONArray jArr = new JSONArray(strArr) 

其中strArr是你的String数组。

更多信息： https ： //developer.android.com/reference/org/json/JSONArray.html#JSONArray(java.lang.Object）