我的Fragment上有这个方法，我想进入另一个与我点击的项目不同的活动，但它仅适用于第一个和第二个项目， 这是我的方法：
listView = (ListView) rootView.findViewById(R.id.list);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
int position_from = position;
Log.i("TRY", Float.toString(position_from));
Intent intent = new Intent(getActivity(),FbLoginActivity.class);
startActivity(intent);
}
});
当我点击第一个＆＃34; 0.0＆＃34;当我点击第二个没什么，当我点击第三个＆＃34; 2.0＆＃34;而其他人都没有工作。
有时在logcat中我点击其他标签（不是1和3）＆＃34; unregisterIRListener（）被调用＆＃34;
这是我的所有片段
public class SampleFragment extends Fragment {
public static String KEY_ID = "id";
public static String KEY_EMAIL = "email";
public static String KEY_NAME = "name";
public static String KEY_JSON = "JSON_DB";
//EVENTI
private static final String TAG = SampleActivity.class.getSimpleName();
private ListView listView;
private FeedListAdapter listAdapter;
private List<FeedItem> feedItems;
private String URL_FEED = "http://api.androidhive.info/feed/feed.json";
//EVENTI
private static final String ARG_POSITION = "position";
private WebView myWebView;
public ValueCallback<Uri> mUploadMessage;
private int position;
public static SampleFragment newInstance(int position) {
SampleFragment f = new SampleFragment();
Bundle b = new Bundle();
b.putInt(ARG_POSITION, position);
f.setArguments(b);
return f;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
LoadPreferences();
Log.i("string", KEY_EMAIL);
Log.i("string", KEY_ID);
Log.i("string", KEY_NAME);
Log.i("string", KEY_JSON);
position = getArguments().getInt(ARG_POSITION);
View rootView = inflater.inflate(page, container, false);
listView = (ListView) rootView.findViewById(R.id.list);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
int position_from = position;
Log.i("TRY", Float.toString(position_from));
Intent intent = new Intent(getActivity(),FbLoginActivity.class);
startActivity(intent);
}
});
feedItems = new ArrayList<FeedItem>();
listAdapter = new FeedListAdapter(getActivity(), feedItems);
listView.setAdapter(listAdapter);
Activity activity = getActivity();
if (KEY_ID == "0") {
Toast.makeText(activity, "Non essendo connesso a Facebook non potrai usufruire di tutte le funzionalità che abbiamo creato apposta per te.", Toast.LENGTH_LONG).show();
}
switch (position) {
case 0:
Cache cache = App.getInstance().getRequestQueue().getCache();
Cache.Entry entry = cache.get(URL_FEED);
if (entry != null) {
// fetch the data from cache
try {
String data = new String(entry.data, "UTF-8");
try {
parseJsonFeed(new JSONObject(data));
} catch (JSONException e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else {
// making fresh volley request and getting json
JsonObjectRequest jsonReq = new JsonObjectRequest(Request.Method.GET,
URL_FEED, null, 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
App.getInstance().addToRequestQueue(jsonReq);
}
break;
case 1:
break;
case 2:
break;
case 3:
break;
case 4:
break;
}
// }
return rootView;
}
/**
* Parsing json reponse and passing the data to feed view list adapter
* */
private void parseJsonFeed(JSONObject response) {
try {
JSONArray feedArray = response.getJSONArray("feed");
for (int i = 0; i < feedArray.length(); i++) {
JSONObject feedObj = (JSONObject) feedArray.get(i);
FeedItem item = new FeedItem();
item.setId(feedObj.getInt("id"));
item.setName(feedObj.getString("name"));
// Image might be null sometimes
String image = feedObj.isNull("image") ? null : feedObj.getString("image");
item.setImge(image);
item.setStatus(feedObj.getString("status"));
item.setProfilePic(feedObj.getString("profilePic"));
item.setTimeStamp(feedObj.getString("timeStamp"));
// url might be null sometimes
String feedUrl = feedObj.isNull("url") ? null : feedObj.getString("url");
item.setUrl(feedUrl);
feedItems.add(item);
}
// notify data changes to list adapater
listAdapter.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
CallbackManager callbackManager = CallbackManager.Factory.create();
callbackManager.onActivityResult(requestCode, resultCode, data);
}
private void LoadPreferences(){
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
KEY_NAME = sharedPreferences.getString("name", "0") ;
KEY_EMAIL = sharedPreferences.getString("email", "0") ;
KEY_ID = sharedPreferences.getString("id", "0") ;
KEY_JSON = sharedPreferences.getString("JSON_DB", "0") ;
//Toast.makeText(this, name, Toast.LENGTH_LONG).show();
//Toast.makeText(this, id, Toast.LENGTH_LONG).show();
//Toast.makeText(this, email, Toast.LENGTH_LONG).show();
}
}
修改 我的FeedAdapter
public class FeedListAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<FeedItem> feedItems;
ImageLoader imageLoader = App.getInstance().getImageLoader();
public FeedListAdapter(Activity activity, List<FeedItem> feedItems) {
this.activity = activity;
this.feedItems = feedItems;
}
@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;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.feed_item, null);
if (imageLoader == null)
imageLoader = App.getInstance().getImageLoader();
TextView name = (TextView) convertView.findViewById(R.id.name);
TextView timestamp = (TextView) convertView
.findViewById(R.id.timestamp);
TextView statusMsg = (TextView) convertView
.findViewById(R.id.txtStatusMsg);
TextView url = (TextView) convertView.findViewById(R.id.txtUrl);
NetworkImageView profilePic = (NetworkImageView) convertView
.findViewById(R.id.profilePic);
FeedImageView feedImageView = (FeedImageView) convertView
.findViewById(R.id.feedImage1);
FeedItem item = feedItems.get(position);
name.setText(item.getName());
// Converting timestamp into x ago format
CharSequence timeAgo = DateUtils.getRelativeTimeSpanString(
Long.parseLong(item.getTimeStamp()),
System.currentTimeMillis(), DateUtils.SECOND_IN_MILLIS);
timestamp.setText(timeAgo);
// Chcek for empty status message
if (!TextUtils.isEmpty(item.getStatus())) {
statusMsg.setText(item.getStatus());
statusMsg.setVisibility(View.VISIBLE);
} else {
// status is empty, remove from view
statusMsg.setVisibility(View.GONE);
}
// Checking for null feed url
if (item.getUrl() != null) {
url.setText(Html.fromHtml("<a href=\"" + item.getUrl() + "\">"
+ item.getUrl() + "</a> "));
// Making url clickable
url.setMovementMethod(LinkMovementMethod.getInstance());
url.setVisibility(View.VISIBLE);
} else {
// url is null, remove from the view
url.setVisibility(View.GONE);
}
// user profile pic
profilePic.setImageUrl(item.getProfilePic(), imageLoader);
// Feed image
if (item.getImge() != null) {
feedImageView.setImageUrl(item.getImge(), imageLoader);
feedImageView.setVisibility(View.VISIBLE);
feedImageView
.setResponseObserver(new FeedImageView.ResponseObserver() {
@Override
public void onError() {
}
@Override
public void onSuccess() {
}
});
} else {
feedImageView.setVisibility(View.GONE);
}
return convertView;
}
}
答案 0 :(得分：1)
尝试在适配器类的getView()方法中添加click listner。
convertView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position_from = position;
Log.i("TRY", Float.toString(position_from));
Intent intent = new Intent(context,FbLoginActivity.class);
context.startActivity(intent);
}
});
也像这样改变构造函数
private Context context;
public FeedListAdapter(Context context,Activity activity, List<FeedItem> feedItems) {
this.context = context;
this.activity = activity;
this.feedItems = feedItems;
}