[英]How to fetch values from multiple Json Arrays like below in Android?
[英]How to fetch Json data from array of arrays in android
例如,我有 JSON 格式的 arrays 數組:
[
[17,"Tracker-9210671","+918010804433",true,84,"869867039210671"],
[18,"Gtrack_Ciaz","+918010804433",true,85,"869867039215308"],
[20,"Gtrack_Zeep_Trunk","+918010804433",true,86,"869867039210333"],
[19,"Gtrack_Zeep_Dashboard","+918010804433",true,87,"869867039209095"]
]
我想在我的 android 中獲取這個 Json 數據,如何得到這個。我無法獲取這個 JsonArray 誰能告訴我應該是什么代碼。
我所做的是(使用凌空抽射):
'''
public class MainActivity extends AppCompatActivity {
private TextView mTextViewResult;
private RequestQueue mQueue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextViewResult = findViewById(R.id.text_view_result);
Button buttonParse = findViewById(R.id.button_parse);
mQueue = Volley.newRequestQueue(this);
buttonParse.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
jsonParse();
}
});
}
private void jsonParse() {
String url = "url";
JsonArrayRequest request = new JsonArrayRequest(Request.Method.GET, url, null,
new Response.Listener < JSONArray > () {
@Override
public void onResponse(JSONArray response) { // Called when request successfull.
try {
for (int i = 0; i < response.length(); i++) {
JSONArray jsonArray = response.getJSONArray(i);
for (int j = 0; j < jsonArray.length(); j++) {
JSONArray value = jsonArray.getJSONArray(j);
int DB_ID = value.getInt(0);
String Devie_Name = value.getString(1);
String Mobile_Number = value.getString(2);
Boolean Status = value.getBoolean(3);
int Stock_Id = value.getInt(4);
String Device_Id = value.getString(5);
mTextViewResult.append(String.valueOf(DB_ID) + " , " + Devie_Name + " , " + Mobile_Number + " , " + String.valueOf(Status) + " , " + String.valueOf(Stock_Id) + " , " + Device_Id + "\n\n");
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) { // called when request not success.
error.printStackTrace();
}
});
mQueue.add(request);
}
}
'''
我得到的錯誤:
org.json.JSONException:類型為 java.lang.Integer 的 0 處的值 17 無法轉換為 JSONArray。
只需將其添加到您的Android Manifest
文件中即可。 因為從 Android 9 操作系統開始,我們需要添加此屬性android:usesCleartextTraffic="true"
。
因為從Android 9 (API level 28)
開始,明文支持默認禁用。
<application
android:usesCleartextTraffic="true">
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