当我尝试使用popover时出现错误，当我点击listview上的按钮注释时使用popover这是按钮所在的适配器：
package com.example.mahdi.chat;
import circleview.CircleImageView;
public class FeedListAdapter extends BaseAdapter {
private static final String TAG = FeedListAdapter.class.getSimpleName();
private Activity activity;
private LayoutInflater inflater;
private List<FeedItem> feedItems;
private String URL = "http://192.168.1.10/social/like.php";
private String user_id;
ViewHolder holder;
private boolean[] mHighlightedPositions = new boolean[6];
private static final String TAG_SUCCESS = "success";
FeedItem item;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
public FeedListAdapter(Activity activity, List<FeedItem> feedItems, String user_id) {
this.activity = activity;
this.feedItems = feedItems;
this.user_id = user_id;
}
@Override
public int getCount() {
return feedItems.size();
}
@Override
public Object getItem(int location) {
return feedItems.get(location);
}
@Override
public long getItemId(int position) {
return position;
}
public void refresh(List<FeedItem> newlist) {
feedItems.addAll(newlist);
this.notifyDataSetChanged();
}
public List<FeedItem> getData() {
return feedItems;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final View vi = convertView;
if (imageLoader == null)
imageLoader = AppController.getInstance().getImageLoader();
if (inflater == null)
inflater = (LayoutInflater)parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null){
convertView = inflater.inflate(R.layout.posts_row, null);
holder = new ViewHolder();
holder.name = (TextView)convertView .findViewById(R.id.name);
holder.timestamp = (TextView) convertView
.findViewById(R.id.time);
holder.statusMsg = (TextView) convertView
.findViewById(R.id.status);
holder. url = (TextView) convertView.findViewById(R.id.url);
holder.profilePic = (CircleImageView) convertView
.findViewById(R.id.profile_img);
holder.feedImageView = (FeedImageView) convertView
.findViewById(R.id.image);
holder.nbr_likes = (TextView) convertView.findViewById(R.id.nbr_likes);
holder.nbr_comments = (Button)convertView.findViewById(R.id.nbr_comments);
holder.like =(Button)convertView.findViewById(R.id.like);
holder.comment =(Button)convertView.findViewById(R.id.comment);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
Log.d(TAG, "Button row pos click: " + getCount());
holder.like.setTag(position);
if(mHighlightedPositions[position]) {
holder.like.setBackgroundColor(Color.BLACK);
notifyDataSetChanged();
}else {
holder.like.setBackgroundColor(Color.BLUE);
notifyDataSetChanged();
}
item = feedItems.get(position);
holder.like.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
int position = (Integer)v.getTag();
Log.d(TAG, "Button row pos click: " + getCount());
RelativeLayout layout = (RelativeLayout)v.getParent();
Button button = (Button)layout.getChildAt(0);
if(mHighlightedPositions[position]) {
button.setBackgroundColor(Color.BLUE);
mHighlightedPositions[position] = false;
notifyDataSetChanged();
}else {
button.setBackgroundColor(Color.BLACK);
mHighlightedPositions[position] = true;
notifyDataSetChanged();
}
item = feedItems.get(position);
Map<String, String> params = new HashMap<String, String>();
params.put("post_id", item.getId());
params.put("user_id", user_id);
Toast.makeText(activity, item.getId(), Toast.LENGTH_SHORT).show();
Toast.makeText(activity, user_id, Toast.LENGTH_SHORT).show();
// making fresh volley request and getting json
CustomRequest jsonReq = new CustomRequest(Request.Method.POST,
URL,params , new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
VolleyLog.d(TAG, "Response: " + response.toString());
if (response != null) {
parseJsonFeed(response);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
// Adding request to volley request queue
AppController.getInstance().addToRequestQueue(jsonReq);
}
});
holder.comment.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
Popover pop = new Popover();
pop.onShowPopup(vi);
}
});
holder.nbr_comments.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
item = feedItems.get(position);
Intent i = new Intent(activity, Comments.class);
i.putExtra("post_id",item.getId());
i.putExtra("name",item.getName());
i.putExtra("image",item.getImge());
i.putExtra("status",item.getStatus());
i.putExtra("profile_img",item.getProfilePic());
i.putExtra("time",item.getTimeStamp());
i.putExtra("url",item.getUrl());
i.putExtra("nbr_likes",item.getNbrLikes());
i.putExtra("nbr_comments",item.getNbrComments());
activity.startActivity(i);
}
});
holder.name.setText(item.getName());
holder.nbr_likes.setText(item.getNbrLikes()+ " Likes");
holder.nbr_comments.setText(item.getNbrComments() + " Comments");
// Converting timestamp into x ago format
CharSequence timeAgo = DateUtils.getRelativeTimeSpanString(
Long.parseLong(item.getTimeStamp()),
System.currentTimeMillis(), DateUtils.SECOND_IN_MILLIS);
holder.timestamp.setText(timeAgo);
// Chcek for empty status message
if (!TextUtils.isEmpty(item.getStatus())) {
holder.statusMsg.setText(item.getStatus());
holder.statusMsg.setVisibility(View.VISIBLE);
} else {
// status is empty, remove from view
holder.statusMsg.setVisibility(View.GONE);
}
// Checking for null feed url
if (item.getUrl() != null) {
holder.url.setText(Html.fromHtml("<a href=\"" + item.getUrl() + "\">"
+ item.getUrl() + "</a> "));
// Making url clickable
holder.url.setMovementMethod(LinkMovementMethod.getInstance());
holder.url.setVisibility(View.VISIBLE);
} else {
// url is null, remove from the view
holder.url.setVisibility(View.GONE);
}
// user profile pic
holder.profilePic.setImageUrl(item.getProfilePic(), imageLoader);
// Feed image
if (item.getImge() != null) {
holder.feedImageView.setImageUrl(item.getImge(), imageLoader);
holder.feedImageView.setVisibility(View.VISIBLE);
holder.feedImageView
.setResponseObserver(new FeedImageView.ResponseObserver() {
@Override
public void onError() {
}
@Override
public void onSuccess() {
}
});
} else {
holder.feedImageView.setVisibility(View.GONE);
}
return convertView;
}
static class ViewHolder {
TextView name;
TextView timestamp;
TextView statusMsg;
TextView url;
CircleImageView profilePic;
FeedImageView feedImageView;
TextView nbr_likes;
Button nbr_comments;
Button like;
Button comment;
}
private void parseJsonFeed(JSONObject response) {
int success;
try {
success = response.getInt(TAG_SUCCESS);
if (success == 1) {
notifyDataSetChanged();
} else {
Toast.makeText(activity, "erreur", Toast.LENGTH_SHORT).show();
}
//listAdapter.addAll(feedItems);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
这是popover的类：
public class Popover extends Activity{
private PopupWindow popWindow;
LayoutInflater layoutInflater;
private Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
// call this method when required to show popup
public void onShowPopup(View v){
layoutInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// inflate the custom popup layout
final View inflatedView = layoutInflater.inflate(R.layout.fb_popup_layout, null,false);
// find the ListView in the popup layout
ListView listView = (ListView)inflatedView.findViewById(R.id.commentsListView);
// get device size
Display display = getWindowManager().getDefaultDisplay();
final Point size = new Point();
display.getSize(size);
int mDeviceHeight = size.y;
// fill the data to the list items
setSimpleList(listView);
// set height depends on the device size
popWindow = new PopupWindow(inflatedView, size.x - 50,size.y - 400, true );
// set a background drawable with rounders corners
popWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.fb_popup_bg));
// make it focusable to show the keyboard to enter in `EditText`
popWindow.setFocusable(true);
// make it outside touchable to dismiss the popup window
popWindow.setOutsideTouchable(true);
// show the popup at bottom of the screen and set some margin at bottom ie,
popWindow.showAtLocation(v, Gravity.BOTTOM, 0,100);
}
void setSimpleList(ListView listView){
ArrayList<String> contactsList = new ArrayList<String>();
for (int index = 0; index < 10; index++) {
contactsList.add("I am @ index " + index + " today " + Calendar.getInstance().getTime().toString());
}
listView.setAdapter(new ArrayAdapter<String>(Popover.this,
R.layout.fb_comments_list_item, android.R.id.text1,contactsList));
}
}
我希望你能帮助我，我花了两天时间解决这个问题。 感谢。