我想获得Wifi热点范围内所有设备(打开wifi的设备)的列表.但是它可能连接也可能没有连接到热点.我通过使用这个库获取连接设备的列表,但我不确定是否可以获得未连接到wifi热点的设备,并且只是在其范围内.如果有人可以澄清它的可能性,那将是非常好的.谢谢.
我正在为RecyclerView实现无休止的数据加载.当软件检测到将显示最后一个项目时,它会下载新项目并调用该loadMoreData()函数,但不会显示新数据集.
当我打电话时notifyDataSetChanged(),没有什么事情发生.
我只有一个刷新视图的解决方案是再次设置适配器,但问题是recyclerview返回到第一个位置然后再次recyclelerview从第一个位置向上滚动到最后一个位置.
RecyclerViewActivity.java
RecyclerView rv;
DatabaseHelpr databaseHelpr;
RVAdapter adapter;
LocationFinder locationfinder;
Location currentLocation;
ArrayList<ServiceModel> childList, list;
private int MainService_ID, city_id;
String url2;
ActionBar actionBar;
JSONArray items = null;
Utility utility;
Double lat, longi;
LinearLayoutManager llm;
int counter=0;
ProgressBar progressBar;
private static final String TAG_ITEMS = "items";
private static final String TAG_LOCALITY = "Locality";
private static final String TAG_BUSINESS_ID = "Business_Id";
private static final String TAG_LONGITUDE = "Longitude";
private static final String TAG_BUSINESS_NAME = "Business_Name";
private …Run Code Online (Sandbox Code Playgroud) android notifydatasetchanged endlessscroll recycler-adapter android-recyclerview
我正在使用第三方库创建一个可搜索的微调器.我在我的应用程序中添加了库类(SearchableListDialog,SearchableSpinner).一切都工作正常,但仍然是我面临的一个问题,例如,在搜索视图小部件中,如果我搜索Abc,我没有将结果过滤为Abc但是当点击列表视图项时,结果显示项目为ABC.这就像位置是项目的更改,但列表没有显示可搜索的结果.我不知道我哪里错了.我多次修改代码但没有得到理想的结果.
Searchable Spinner xml代码:
<com.example.my.currencyconverterapp.activity.SearchableSpinner
android:id="@+id/spinner"
android:layout_below="@+id/rl_currency_converterted_data"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
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这是我的片段代码,我正在为可搜索的微调器设置适配器.
countriesCustomAdapterInr = new CountriesCustomAdapterInr(getActivity(), R.layout.custom_spinner_items, arrayList,res);
spinner.setAdapter(countriesCustomAdapterInr);
assert spinner != null;
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(getActivity(), ""+arrayList.get(i).getFull_name()+i, Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {}
});
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这是第三方SearchableSpinner类:
public class SearchableSpinner extends android.support.v7.widget.AppCompatSpinner implements View.OnTouchListener,
SearchableListDialog.SearchableItem {
public static final int NO_ITEM_SELECTED = -1;
private Context _context;
private List _items;
private SearchableListDialog _searchableListDialog;
private boolean _isDirty;
private ArrayAdapter _arrayAdapter; …Run Code Online (Sandbox Code Playgroud) android listview android-arrayadapter android-spinner searchview
这是我的 Fireabse 数据库结构。我想检索20170116不是硬编码值的键数据。这是动态键。我得到了一些键和值,例如:
这是我的功能:
function getData(prospectId) {
database.ref('users/'+prospectId).once('value').then(function(snapshot) {
var prospectId = snapshot.key ;
console.log("prospectId : "+ prospectId); // output is : prospectId : 1104812
snapshot.forEach(function(childSnapshot) {
var businessUrl = childSnapshot.key;
console.log("businessUrl : "+ businessUrl); // output is : businessUrl : http:\\www.abc.com
var dates = Object.keys(childSnapshot.val());
console.log("dates : "+ dates); //output is : dates : 20170116,20170117,20170119,20170121
var singleDate = dates[0];
console.log("singleDate : "+ singleDate); //output is : singleDate : 20170116
});
});
}
getData(1104812);
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那么如何获取20170116日期数据或快照呢?
根据LinkedIn的公告,我们需要迁移到API和OAuth 2.0的2.0版,因此根据发布文档,我的GET请求网址从
https://api.linkedin.com/v1/people/~:(first-name,last-name,email-address,skills,educations,positions,location,phone-numbers)?requestToken?scope=rw_nus+r_fullprofile&format=json&oauth2_access_token=
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至
https://api.linkedin.com/v2/me/~:(first-name,last-name,email-address,skills,educations,positions,location,phone-numbers)?requestToken?scope=rw_nus+r_fullprofile&format=json&oauth2_access_token=
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我得到以下回应:
{
"serviceErrorCode": 0,
"message": "Resource me does not exist",
"status": 404
}
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请帮帮我,我这边出了什么问题?需要进行哪些更改?
我在python中使用photo.update请求进行panos(360全景图像)连接.我只能将一个全景连接到另一个全景,但我想将一个全景连接到多个全景.我没有取得成功的结果.
我使用Python发送了以下photoUpdate请求:
update_photo_url = 'https://streetviewpublish.googleapis.com/v1/photo/{}?key={}&updateMask=connections'.format("pano_1","AIzdesdfyxscvvvvvvvvvvvvvvv")
headers = {"Authorization": "Bearer {}".format("ya29.Glx6BO91jWbjzLQKYPvP16fhT-jyOEnIdnoRcZcU9uYCqzwH3Dkuf-qf_kzUc2ykYOyVTZCfaGjOEAScsJK7WgS4NE9gfS6bSobWDIMdfpfY7SPzRMmxi4kfTrmsRQ"), "Content-Length": "0", "Content-Type": "application/json"}
update_body = {
[
{
"photo": {
"photoId": {
"id": "pano_1"
},
"connections": {
"target": {
"id": "pano_2"
},
"target": {
"id": "pano_3"
}
},
}
}
]
}
update_response = requests.put(update_photo_url,headers=headers,json=update_body)
update_response.text
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错误:
{
"error": {
"code": 400,
"message": "Invalid JSON payload received. Unknown name \"\": Root element must be a message.",
"status": "INVALID_ARGUMENT",
"details": [
{
"@type": "type.googleapis.com/google.rpc.BadRequest",
"fieldViolations": [
{
"description": "Invalid JSON …Run Code Online (Sandbox Code Playgroud) android ×4
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