private void initSearchHistory() {
List<String> list = SharedPreferencesUtil.getInstance().getObject("searchHistory", List.class);
mHisAdapter.clear();
if (list != null && list.size() > 0) {
tvClear.setEnabled(true);
mHisAdapter.addAll(list);
} else {
tvClear.setEnabled(false);
}
mHisAdapter.notifyDataSetChanged();
}
/**
* 保存搜索记录.不重复，最多保存20条
*
* @param query
*/
private void saveSearchHistory(String query) {
List<String> list = SharedPreferencesUtil.getInstance().getObject("searchHistory", List.class);
if (list == null) {
list = new ArrayList<>();
list.add(query);
} else {
Iterator<String> iterator = list.iterator();
while (iterator.hasNext()) {
String item = iterator.next();
if (TextUtils.equals(query, item)) {
iterator.remove();
}
}
list.add(0, query);
}
int size = list.size();
if (size > 20) { // 最多保存20条
for (int i = size - 1; i >= 20; i--) {
list.remove(i);
}
}
SharedPreferencesUtil.getInstance().putObject("searchHistory", list);
initSearchHistory();
}
@OnClick(R.id.tvClear)
public void clearSearchHistory() {
SharedPreferencesUtil.getInstance().putObject("searchHistory", null);
initSearchHistory();
}