如何在 fusedlocationproviderclient.oncompletelistener() 中添加进度条？

Posted 2023-04-14

【中文标题】如何在 fusedlocationproviderclient.oncompletelistener() 中添加进度条？

【英文标题】：How to add progressbar in fusedlocationproviderclient.oncompletelistener()?

【发布时间】：2020-07-20 13:06:06

【问题描述】：

我正在使用 fusedlocationproviderclient 来查找当前位置，但我希望进度条应该显示直到找到位置，但我不明白如何在 oncomplete() 方法中使用进度条 这是我的 fusedlocation 函数的代码。

progressBar = findViewById(R.id.homrprogressbar);
    progressBar.setIndeterminate(true);
    mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
    if (checkPermissions()) 
        if (isLocationEnabled()) 
            mFusedLocationClient.getLastLocation().addOnCompleteListener(
                    new OnCompleteListener<Location>() 
                        @Override
                        public void onComplete(@NonNull Task<Location> task) 
                            progressBar.setVisibility(View.VISIBLE);
                            Location location = task.getResult();
                            if (location == null) 
                                requestNewLocationData();
                             else 
                                countryname = findcountry(location.getLatitude(), location.getLongitude());
                                if(countryname.equals("India")) 
                                    TypedArray allcountry = getResources().obtainTypedArray(R.array.indianews);
                                    String[] allcountryname = getResources().getStringArray(R.array.indianewsnames);
                                    String[] allcountryurls = getResources().getStringArray(R.array.indiahref);
                                    newsModels = new ArrayList<>();
                                    for (int i = 0; i < allcountry.length(); i++) 
                                        NewsModel newsModel = new NewsModel(allcountry.getResourceId(i, 0), allcountryname[i], allcountryurls[i]);
                                        newsModels.add(newsModel);
                                    
                                    Singleton.getConstant().addNewsModel(newsModels);
                                    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
                                    fragmentTransaction.replace(R.id.frame_layout, homeFragment);
                                    fragmentTransaction.commit();
                                    binding.bottmNav.getMenu().findItem(R.id.location).setTitle("India");
                                    binding.bottmNav.getMenu().findItem(R.id.home1).setChecked(true);
                                    progressBar.setVisibility(View.GONE);

                                
                            
                        
                    
            );
         else 
            Toast.makeText(this, "Turn on location", Toast.LENGTH_LONG).show();
            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivity(intent);
        
     else 
        requestPermissions();
    

【问题讨论】：

把progressBar.setVisibility(View.VISIBLE);在 if (isLocationEnabled()) 下

【参考方案1】：

把progressBar.setVisibility(View.VISIBLE);放在if (isLocationEnabled())下面