JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
Patient patient = new Patient();
patient.setTitle(obj.getString("id"));
patient.setThumbnailUrl(obj.getString("image"));
patientList.add(patient);
} catch (JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(movieReq);
}
logcat的
01-07 07:27:29.294 7938-7938/info.androidhive.customlistviewvolley D/MainActivity: [{"id":"g"},{"image":"http:\/\/192.168.0.101\/test\/1.png"}]
01-07 07:27:29.312 7938-7938/info.androidhive.customlistviewvolley W/System.err: org.json.JSONException: No value for image
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at org.json.JSONObject.getString(JSONObject.java:550)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at info.androidhive.customlistviewvolley.MainActivity$1.onResponse(MainActivity.java:72)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at info.androidhive.customlistviewvolley.MainActivity$1.onResponse(MainActivity.java:59)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at com.android.volley.toolbox.JsonRequest.deliverResponse(JsonRequest.java:65)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at android.os.Looper.loop(Looper.java:135)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5254)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at java.lang.reflect.Method.invoke(Native Method)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: org.json.JSONException: No value for id
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at org.json.JSONObject.getString(JSONObject.java:550)
01-07 07:27:29.313 7938-7938/info.androidhive.customlistviewvolley W/System.err: at info.androidhive.customlistviewvolley.MainActivity$1.onResponse(MainActivity.java:71)
我可以从数据库中获取数据,但为什么它仍然显示图像没有值? 我已经检查过该网址是否正确。以下是logcat中显示的错误。请给我一些帮助。谢谢。
答案 0 :(得分:2)
你错了 JSONObject ,试试这个
try {
JSONObject objId = response.getJSONObject(0);
JSONObject objImage = response.getJSONObject(1);
Patient patient = new Patient();
patient.setTitle(objId.getString("id"));
patient.setThumbnailUrl(objImage.getString("image"));
patientList.add(patient);
} catch (JSONException e) {
e.printStackTrace();
}
答案 1 :(得分:0)
查看您的回复并尝试此
JSONObject obj = response.getJSONObject(0);
JSONObject obj1 = response.getJSONObject(1);
Patient patient = new Patient();
patient.setTitle(obj.getString("id"));
patient.setThumbnailUrl(obj1.getString("image"));