SummaryĪs you can see, Google more and more wants the developers’ code to be replenished with if-else constructions. Unfortunately, we were unable to test this solution in the absence of a new version of Android and cannot say whether it works as well, whether the old restrictions apply to it, and how much more convenient it is. And also there is a method for unregistering scan callback. You should override its onScanResultsAvailable() method and there you can call the get scan results method (provided in the code snippet). Now you need to register the scan results callback instead of start scan, pass there new ScanResultsCallback class element. And then everyone who did not have time to read the documentation about the new changes faced difficulties because their scan worked a couple of times and then disappeared for two minutes. If you try to start the scan more times, then all your attempts will be throttled. Now you can start the scan only four times every 120 seconds. The wifi scan was cropped as much as possible. But the worst happened later… Android Pie and Android 10Īt the release of the version of Android 9, Google presented a surprise to all developers. However, at that moment there were no restrictions on working with WiFi, and people working with this functionality could keep calm. For example, they limited the ability of services to work in the background, and much more. Let’s make a small digression by mentioning that around the same time Google began to severely limit developers in their capabilities. And it worked just as easily as it looks and without any difficulties. As you can see, very simple and straightforward code. ![]() You create the Broadcast Receiver, override its onReceive method, register your receiver with related intent filter and then call startScan on your wifi manager. Here is the code snippet below which shows how wifi scanning works. Therefore, the wifi scanning worked without any restrictions and it was possible to scan continuously. ![]() So let’s start! Android Oreo and earlierĪ couple of years ago, Google still did not pay much attention to working with wifi and did not introduce any restrictions and everything worked the same way as it did many years before. However, it is also worth noting that we will only consider the versions of Android that are actively used now and will not consider those versions that have long been out of circulation. Since restrictions and changes are strongly tied to Android versions, we will divide the article into subsections regarding these versions. In some of our previous articles, we mentioned a few important details of working with a WiFi scan and various restrictions concerning it, but now we decided to combine all this in one place and write a full article describing all the nuances. Today we want to tell you more about WiFi scanning on different versions of Android devices and the restrictions you could meet during the development process. ![]() Hi there! In the Navigine team, we’ve been providing indoor and outdoor positioning mobile technologies that enable advanced indoor navigation and proximity solutions for eight years.
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