我正在尝试检索用户参加过的事件和日期(存储在MySQL中并使用PHP编码为JSON)。当用户输入他们的ID并单击按钮时,他们的事件和日期将显示在另一个活动的ListView中。但是,当这个用户已经完成了几个事件时,我只能解析一个用户的1个事件和1个日期。这是JSON的样子:[{“code”:“login_success”,“Events”:“Interview”,“Date”:“04/12/2017”},{“code”:“login_success”,“Events” “老板”, “日期”: “2017年4月15日”}]。这是我的代码:
//Check_Events.java
login_button01.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//validation for username and password. Ensure corrected input
studentID = StudentID.getText().toString();
if(studentID.equals(""))
{
builder.setTitle("Code not found");
displayAlert("Enter a valid passcode");
}
//validate data from server
else
{
StringRequest stringRequest = new StringRequest(Request.Method.POST, login_url01,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONArray jsonArray = new JSONArray(response);
JSONObject jsonObject = jsonArray.getJSONObject(0);
//"code" is the key from json object on server
String code = jsonObject.getString("code");
if(code.equals("login_failed"))
{
builder.setTitle("Login Error");
displayAlert(jsonObject.getString("message"));
//builder.setMessage("Response" + response);
}
//login successfully
else
{
//这是我不知道的部分//
Toast.makeText(Check_Events.this,"Yay!!!", Toast.LENGTH_LONG).show();
Intent intent = new Intent(Check_Events.this, Events.class);
Bundle bundle = new Bundle();
bundle.putString("Events", jsonObject.getString("Events"));
bundle.putString("Date", jsonObject.getString("Date"));
intent.putExtras(bundle);
startActivity(intent);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(Check_Events.this, "Error login",Toast.LENGTH_LONG);
error.printStackTrace();
}
// Events.java
ListView myListv = (ListView) findViewById(R.id.listv);
Bundle bundle1 = getIntent().getExtras();
final String events= bundle1.getString("Events");
Bundle bundle2 = getIntent().getExtras();
final String date= bundle2.getString("Date");
DETAILS = new String[] {events, date};
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, DETAILS);
myListv.setAdapter(arrayAdapter);
答案 0 :(得分:0)
在JSONArray下面添加for循环并将JSONObjects保留在其中
JSONArray jsonArray = new JSONArray(response);
for(int i =0; i < jsonArray.length(); i++){
JSONObject jsonObject = jsonArray.getJSONObject(i);
}
将数据添加到arraylist并将数据设置为listview