Android 关于使用SwipeRefreshLayout实现拉入刷新的一些问题
我在片段中使用pull刷新来刷新通过json url获取的数据。 但我面临的问题是,一旦我在片段页面上着陆,滑动刷新小部件就会启动,数据开始加载,但如果在从internet获取数据之前,我将viewpager滑动到新的片段页面,然后立即转到加载数据的前一页,然后,一个新的刷卡刷新小部件覆盖了以前存在的小部件,因此有两个重叠的小部件,即使加载了数据,一个小部件始终保持在屏幕上。我使用了setRefrshing(false),但它不符合我的要求 Fragment.javaAndroid 关于使用SwipeRefreshLayout实现拉入刷新的一些问题,android,android-fragments,swiperefreshlayout,Android,Android Fragments,Swiperefreshlayout,我在片段中使用pull刷新来刷新通过json url获取的数据。 但我面临的问题是,一旦我在片段页面上着陆,滑动刷新小部件就会启动,数据开始加载,但如果在从internet获取数据之前,我将viewpager滑动到新的片段页面,然后立即转到加载数据的前一页,然后,一个新的刷卡刷新小部件覆盖了以前存在的小部件,因此有两个重叠的小部件,即使加载了数据,一个小部件始终保持在屏幕上。我使用了setRefrshing(false),但它不符合我的要求 Fragment.java public cl
public class Africa extends Fragment implements SwipeRefreshLayout.OnRefreshListener{
//ProgressDialog pDialog;
private RecyclerView mRecyclerView;
//private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private CountryDataAdapter adapter;
private ArrayList<CountriesData> data;
private SwipeRefreshLayout swipe;
EasyTracker easyTracker;
public Africa(){
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
easyTracker = EasyTracker.getInstance(getActivity());
// setContentView(R.layout.countrydata);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
//pDialog = new ProgressDialog(this.getContext(), ProgressDialog.THEME_HOLO_LIGHT);
View v = inflater.inflate(R.layout.countrydata, container, false);
//mRecyclerView = (RecyclerView) v.findViewById(R.id.my_recycler_view1);
mRecyclerView = (RecyclerView)v.findViewById(R.id.my_recycler_view1);
mRecyclerView.setHasFixedSize(true);
adapter=new CountryDataAdapter(getActivity());
mLayoutManager = new LinearLayoutManager(getContext());
mRecyclerView.setLayoutManager(mLayoutManager);
// loadJSON();
swipe=(SwipeRefreshLayout)v.findViewById(R.id.swipe_refresh_layout);
swipe.setOnRefreshListener(this);
swipe.setColorSchemeColors(R.color.b, R.color.p, R.color.g, R.color.o);
// loadRetro();
final boolean ref=swipe.isRefreshing();
if(ref) loadRetro();
else
{
swipe.postDelayed(new Runnable() {
@Override
public void run() {
swipe.setRefreshing(true);
loadRetro();
easyTracker.send(MapBuilder.createEvent("Home Page", "Swipe", "Africa", null).build());
}
}, 500);
}
return v;
}
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager
= (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
@Override
public void onCreateOptionsMenu(
Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.main, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_refresh) {
boolean x=isNetworkAvailable();
if(x)
{
swipe.setRefreshing(true);
loadRetro();
easyTracker.send(MapBuilder.createEvent("Home Page", "Refresh", "Africa", null).build());
return true;
}
else Toast.makeText(getActivity(), "No Internet Connection!",
Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onRefresh(){
// swipe.setRefreshing(true);
// loadRetro();
if(!swipe.isRefreshing()) {
swipe.postDelayed(new Runnable() {
@Override
public void run() {
swipe.setRefreshing(true);
loadRetro();
}
}, 1500);
}
else loadRetro();
easyTracker.send(MapBuilder.createEvent("Home Page", "Pull To Refresh", "Africa", null).build());
// pDialog.dismiss();
}
public void loadRetro(){
// swipe.setRefreshing(true);
// pDialog.setMessage("Please wait...");
// pDialog.setCancelable(false);
// pDialog.show();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://www.appuonline.com")
.addConverterFactory(GsonConverterFactory.create())
.build();
jsonrequest request = retrofit.create(jsonrequest.class);
Call<JsonResponse> call = request.getJSON5();
call.enqueue(new Callback<JsonResponse>() {
@Override
public void onResponse(Call<JsonResponse> call, Response<JsonResponse> response) {
try{
JsonResponse jsonResponse = response.body();
data = new ArrayList<>(Arrays.asList(jsonResponse.getData()));
adapter.addItems(data);
mRecyclerView.setAdapter(adapter);
// if (pDialog.isShowing())
// pDialog.dismiss();
swipe.setRefreshing(false);}
catch (Exception e){
e.printStackTrace();
}
}
@Override
public void onFailure(Call<JsonResponse> call, Throwable t) {
try{
Log.d("Error", "no connection");
swipe.setRefreshing(false);}
catch (Exception e){
e.printStackTrace();
}
}
});
}
}
公共类Africa extends片段实现SwipeRefreshLayout.OnRefreshListener{
//ProgressDialog;
私人回收视图mRecyclerView;
//专用回收器查看适配器mAdapter;
private RecyclerView.LayoutManager MLLayoutManager;
私有数据适配器;
私有数组列表数据;
私人刷卡和布局刷卡;
易追踪者易追踪者;
公共非洲(){
}
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
设置选项菜单(真);
easyTracker=easyTracker.getInstance(getActivity());
//setContentView(R.layout.countrydata);
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
//为该碎片膨胀布局
//pDialog=newprogressdialog(this.getContext(),ProgressDialog.THEME\u HOLO\u LIGHT);
视图v=充气机。充气(R.layout.countrydata,container,false);
//mRecyclerView=(RecyclerView)v.findViewById(R.id.my_recycler_view1);
mRecyclerView=(RecyclerView)v.findViewById(R.id.my_recycler_view1);
mRecyclerView.setHasFixedSize(true);
adapter=newcountrydataadapter(getActivity());
mLayoutManager=newlinearlayoutmanager(getContext());
mRecyclerView.setLayoutManager(mllayoutmanager);
//loadJSON();
滑动=(滑动刷新布局)v.findviewbyd(R.id.swipe\u刷新布局);
swipe.setOnRefreshListener(此);
滑动.setColorSchemeColors(R.color.b,R.color.p,R.color.g,R.color.o);
//loadRetro();
最终布尔值ref=swipe.isRefreshing();
如果(ref)loadRetro();
其他的
{
swipe.postDelayed(新的Runnable(){
@凌驾
公开募捐{
swipe.setRefreshing(true);
loadRetro();
send(MapBuilder.createEvent(“主页”,“滑动”,“非洲”,null).build());
}
}, 500);
}
返回v;
}
专用布尔值isNetworkAvailable(){
连接管理器连接管理器
=(ConnectivityManager)getActivity().getSystemService(Context.CONNECTIVITY_服务);
NetworkInfo activeNetworkInfo=connectivityManager.getActiveNetworkInfo();
返回activeNetworkInfo!=null&&activeNetworkInfo.isConnected();
}
@凌驾
创建选项菜单上的公共void(
菜单菜单,菜单(充气机){
充气机。充气(右菜单。主菜单,菜单);
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击,只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId();
//noinspection SimplifiableIf语句
if(id==R.id.action\u刷新){
布尔x=isNetworkAvailable();
if(x)
{
swipe.setRefreshing(true);
loadRetro();
send(MapBuilder.createEvent(“主页”、“刷新”、“非洲”、null.build());
返回true;
}
else Toast.makeText(getActivity(),“没有Internet连接!”,
吐司。长度(短)。show();
返回true;
}
返回super.onOptionsItemSelected(项目);
}
@凌驾
公共void onRefresh(){
//swipe.setRefreshing(true);
//loadRetro();
如果(!swipe.isRefreshing()){
swipe.postDelayed(新的Runnable(){
@凌驾
公开募捐{
swipe.setRefreshing(true);
loadRetro();
}
}, 1500);
}
else loadRetro();
send(MapBuilder.createEvent(“主页”,“拉入刷新”,“非洲”,null.build());
//pDialog.disclose();
}
公共void loadRetro(){
//swipe.setRefreshing(true);
//setMessage(“请稍候…”);
//pDialog.setCancelable(假);
//pDialog.show();
改装改装=新改装.Builder()
.baseUrl(“http://www.appuonline.com")
.addConverterFactory(GsonConverterFactory.create())
.build();
jsonrequest=reformation.create(jsonrequest.class);
Call Call=request.getJSON5();
call.enqueue(新回调(){
@凌驾
公共void onResponse(调用、响应){
试一试{
JsonResponse=response.body();
data=newarraylist(Arrays.asList(jsonResponse.getData());
适配器.附加项(数据);
mRecyclerView.setAdapter(适配器);
//if(pDialog.isShowing())
//pDialog.disclose();
swipe.setRefreshing(false);}
捕获(例外e){
pager.setOffscreenPageLimit(5); //5 is count of pages in viewpager
@Override
public int onStartCommand(final Intent intent, int flags, int startId) {
mCountDownTimer = new CountDownTimer(5000, 1000) {
@Override
public void onTick(long millisUnitFinished) {
}
@Override
public void onFinish() {
//you will get status every 5 second here.
}
};
mCountDownTimer.start();
return START_NOT_STICKY;
}