/** 更新列表数据 */
private void refreshData(final int from, int to) {
mErrorLayout.setVisibility(View.GONE);
BUApi.getForumThreads(
this,
mFid,
from,
to,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
if (isFinishing()) return;
try {
mSwipeRefreshLayout.setRefreshing(false);
if (BUApi.checkStatus(response)) {
JSONArray newListJson = response.getJSONArray("threadlist");
List<me.ihainan.bu.app.models.Thread> newThreads =
BUApi.MAPPER.readValue(
newListJson.toString(), new TypeReference<List<Thread>>() {});
// 重新加载
if (from == 0) {
mThreadList.clear();
mAdapter.notifyDataSetChanged();
}
// 删除 Loading Progress Bar
if (mThreadList.size() > 0) {
mThreadList.remove(mThreadList.size() - 1);
mAdapter.notifyItemRemoved(mThreadList.size());
}
// 更新 RecyclerView
if (from == 0) mThreadList.clear();
mCurrentPosition += BUApplication.LOADING_THREADS_COUNT;
mThreadList.addAll(newThreads);
mAdapter.notifyDataSetChanged();
// 更新标志
mIsLoading = false;
} else if ("forum+need+password".equals(response.getString("msg"))) {
String message = getString(R.string.error_forum_need_password);
String debugMessage = message + " - " + response;
Log.w(TAG, debugMessage);
CommonUtils.debugToast(ThreadListActivity.this, debugMessage);
showErrorLayout(message);
} else {
String message =
getString(R.string.error_unknown_msg) + ": " + response.getString("msg");
String debugMessage = message + " - " + response;
Log.w(TAG, debugMessage);
CommonUtils.debugToast(ThreadListActivity.this, debugMessage);
showErrorLayout(message);
}
} catch (Exception e) {
// 解析失败的话，说明到头了，移除标志，不允许再次更新（mIsLoading 始终为 true）
if (mThreadList.size() > 0) {
Log.d(TAG, "refreshData >> 到头了 " + response);
mThreadList.remove(mThreadList.size() - 1);
mAdapter.notifyItemRemoved(mThreadList.size());
}
mSwipeRefreshLayout.setRefreshing(false);
Log.e(TAG, getString(R.string.error_parse_json) + "\n" + response, e);
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
if (isFinishing()) return;
mSwipeRefreshLayout.setRefreshing(false);
// 服务器请求失败，说明网络不好，移除标志，运行再次发送请求
if (mThreadList.size() > 0) {
mThreadList.remove(mThreadList.size() - 1);
mAdapter.notifyItemRemoved(mThreadList.size());
}
mIsLoading = false;
if (mThreadList.size() > 0) {
mThreadList.remove(mThreadList.size() - 1);
mAdapter.notifyItemRemoved(mThreadList.size());
}
String message = getString(R.string.error_network);
String debugMessage = "getForumThreads >> " + message;
CommonUtils.debugToast(ThreadListActivity.this, debugMessage);
showErrorLayout(message);
Log.e(TAG, debugMessage, error);
}
});
}
/**
* 获取用户信息并执行特定操作，如果用户信息已经被缓存，则直接从缓存中获取，否则从服务器拉取并进行缓存
*
* @param context 上下文
* @param userName 用户名
* @param callback 包含回调函数
*/
public static void getAndCacheUserInfo(
final Context context, String userName, final UserInfoAndFillAvatarCallback callback) {
userName = CommonUtils.decode(userName);
// 从缓存中获取用户信息
final Member member =
(Member)
BUApplication.getCache(context).getAsObject(BUApplication.CACHE_USER_INFO + userName);
if (member != null) {
Log.i(
TAG, "从缓存 " + BUApplication.CACHE_USER_INFO + userName + " 中获取用户 " + userName + " 的缓存数据");
// Do something HERE!!!
callback.doSomethingIfHasCached(member);
} else {
Log.i(TAG, "准备拉取用户 " + userName + " 的缓存数据");
// 从服务器拉取数据并写入到缓存当中
final String finalUserName = userName;
BUApi.getUserInfo(
context,
-1,
userName,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
// if (((Activity) context).isFinishing()) return;
try {
if (BUApi.checkStatus(response)) {
Member newMember =
BUApi.MAPPER.readValue(
response.getJSONObject("memberinfo").toString(), Member.class);
// Do something HERE!!!
callback.doSomethingIfHasNotCached(newMember);
// 将用户信息放入到缓存当中
Log.i(
TAG,
"拉取得到用户 "
+ finalUserName
+ " 的数据，放入缓存 "
+ BUApplication.CACHE_USER_INFO
+ finalUserName
+ " 中："
+ newMember);
BUApplication.getCache(context)
.put(
BUApplication.CACHE_USER_INFO + finalUserName,
newMember,
BUApplication.USER_INFO_CACHE_DAYS * ACache.TIME_DAY);
} else if ("member_nonexistence".equals(response.getString("msg"))) {
String message =
context.getString(R.string.error_user_not_exists)
+ ": "
+ CommonUtils.decode(finalUserName);
String debugMessage = message + " - " + response;
Log.w(TAG, debugMessage);
CommonUtils.debugToast(context, debugMessage);
} else {
String message =
context.getString(R.string.error_unknown_msg)
+ ": "
+ response.getString("msg");
String debugMessage = message + " - " + response;
Log.w(TAG, debugMessage);
CommonUtils.debugToast(context, debugMessage);
}
} catch (Exception e) {
Log.e(TAG, context.getString(R.string.error_parse_json) + "\n" + response, e);
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
if (((Activity) context).isFinishing()) return;
String message = context.getString(R.string.error_network);
String debugMessage = "getAndCacheUserInfo >> " + message;
CommonUtils.debugToast(context, debugMessage);
Log.e(TAG, debugMessage, error);
}
});
}
}