我正在使用排球工作自定义Listview。主要来源是listview using volley
I have made just a little change
(1)replace movies.json with my php url
(2)here replace some string and comment some part because it not needed for me
package info.androidhive.customlistviewvolley;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.widget.ListView;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonArrayRequest;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
import info.androidhive.customlistviewvolley.adater.CustomListAdapter;
import info.androidhive.customlistviewvolley.app.AppController;
import info.androidhive.customlistviewvolley.model.Movie;
public class MainActivity extends Activity {
// Log tag
private static final String TAG = MainActivity.class.getSimpleName();
// Movies json url
private static final String url = "myurl.php";
private ProgressDialog pDialog;
private List<Movie> movieList = new ArrayList<Movie>();
private ListView listView;
private CustomListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.list);
adapter = new CustomListAdapter(this, movieList);
listView.setAdapter(adapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
getActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#1b1b1b")));
// Creating volley request obj
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);
Movie movie = new Movie();
movie.seturl(obj.optString("image"));
Log.e("Test",obj.optString("image"));
movie.setfullname(obj.optString("fullname"));
movie.setRating(obj.optString("location"));
//movie.setYear(obj.getInt("location"));
// Genre is json array
// // JSONArray genreArry = obj.getJSONArray("genre");
// ArrayList<String> genre = new ArrayList<String>();
// for (int j = 0; j < genreArry.length(); j++) {
// genre.add((String) genreArry.get(j));
// }
// movie.setGenre(genre);
// adding movie to movies array
movieList.add(movie);
} 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);
}
@Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
我的PHP代码是
<?php
require_once('dbConnect.php');
$sql = "select image,fullname,location from uploadfinding";
$res = mysqli_query($conn,$sql);
$result = array();
while($row = mysqli_fetch_array($res)){
array_push($result, array(
"image"=>$row['image'],"fullname"=>$row['fullname'],"location"=>$row['location']));
echo "<pre>";
}
echo json_encode($result);
mysqli_close($conn);
?>
但仅显示空白页面后。 不知道出了什么问题。 //记录错误
04-30 18:00:25.788 5321-5353/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.util.ArrayMap', referenced from method com.android.tools.fd.runtime.Restarter.getActivities
04-30 18:00:50.758 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.808 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.828 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.878 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.Application$OnProvideAssistDataListener', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.878 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.908 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.948 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:50.998 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.Application$OnProvideAssistDataListener', referenced from method info.androidhive.customlistviewvolley.app.AppController.access$super
04-30 18:00:51.068 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.util.ArrayMap', referenced from method com.android.tools.fd.runtime.MonkeyPatcher.monkeyPatchExistingResources
04-30 18:00:51.098 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.util.ArrayMap', referenced from method com.android.tools.fd.runtime.MonkeyPatcher.pruneResourceCache
04-30 18:00:51.217 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.278 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.297 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.329 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.media.session.MediaController', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.338 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.widget.Toolbar', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.357 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.TaskStackBuilder', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.457 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.TaskStackBuilder', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.508 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.ActivityManager$TaskDescription', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.588 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.617 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.617 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.SharedElementCallback', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.638 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.688 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.transition.TransitionManager', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.768 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.SharedElementCallback', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.838 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.858 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:51.998 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.app.assist.AssistContent', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:52.088 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.view.SearchEvent', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:52.118 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.UserHandle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
04-30 18:00:52.188 6781-6781/info.androidhive.customlistviewvolley E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method info.androidhive.customlistviewvolley.MainActivity.access$super
答案 0 :(得分：0)
确保您的xml中包含以下代码
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
答案 1 :(得分：0)
在你的php文件中添加这些行，并使用results.json ..
更改url $fp = fopen('results.json', 'w');
fwrite($fp, json_encode($result));
fclose($fp);
我希望这对你有用..