英文:
display json array in textview android not working
问题
以下是翻译好的代码部分：
private void account(){
// 从服务器获取数据
String url = "我的URL";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("uaccount");
Log.i("conso", jsonArray.toString());
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject employee = jsonArray.getJSONObject(i);
Log.i("con", employee.toString());
String city = employee.getString("city");
String town = employee.getString("town");
txt_City.setText("" + city);
txt_Town.append(town);
}
} catch (JSONException e) {
Log.i("console.logs e:", e.toString());
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("console.logs error:", error.toString());
error.printStackTrace();
}
});
requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(request);
}
英文:
My JSON array don't work and I don't know why. In logs, it only show this: [] and nothing else. I won't use that in text view.
This is my code:
private void account(){
// get from the server
String url = "my url";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("uaccount");
Log.i("conso", jsonArray.toString());
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject employee = jsonArray.getJSONObject(i);
Log.i("con", employee.toString());
//Log.i("con", name+ number+status+ age+ city+ town+ gender+weight +height);
String city = employee.getString("city");
String town = employee.getString("town");
txt_City.setText(""+city);
txt_Town.append(town);
//Log.i("co", city + town);
}
} catch (JSONException e) {
Log.i("console.logs e:", e.toString());
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("console.logs error:", error.toString());
error.printStackTrace();
}
});
requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(request);
}
答案1
得分: 0
我尝试过这段带有ID的代码：
在onCreate方法中：
uAccount("3");
在方法中：
private void uAccount(final String id){
// 从服务器获取
String url = "我的链接";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("uaccount");
Log.i("conso", jsonArray.toString());
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject employee = jsonArray.getJSONObject(i);
Log.i("con", employee.toString());
//Log.i("con", name+ number+status+ age+ city+ town+ gender+weight +height);
String city = employee.getString("city");
String town = employee.getString("town");
txt_City.setText(""+city);
txt_Town.append(town);
//Log.i("co", city + town);
}
} catch (JSONException e) {
Log.i("console.logs e:", e.toString());
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("console.logs error:", error.toString());
error.printStackTrace();
}
}){
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("id",id);
return params;
}
};
requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(request);
}
英文:
i tried this code with id :
in onreate:
uAccount("3");
in method
private void uAccount(final String id){
// get from server
String url = "my url";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("uaccount");
Log.i("conso", jsonArray.toString());
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject employee = jsonArray.getJSONObject(i);
Log.i("con", employee.toString());
//Log.i("con", name+ number+status+ age+ city+ town+ gender+weight +height);
String city = employee.getString("city");
String town = employee.getString("town");
txt_City.setText(""+city);
txt_Town.append(town);
//Log.i("co", city + town);
}
} catch (JSONException e) {
Log.i("console.logs e:", e.toString());
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("console.logs error:", error.toString());
error.printStackTrace();
}
}){
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("id",id);
return params;
}
};
requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(request);
}
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