列出 Android Q / API 29 上的 WiFi 网络

Question

I'm currently migrating my application to Android Q. I want to list all configured WiFi networks and before QI was able to do so with the function getConfiguredNetworks from the WiFiManager. Sadly this method was deprecated on API level 29 and returns an empty list on Android Q devices.

The deprecation comment only refers to cases where I also want to connect to these networks. I do not want to do this, I just want to list the networks with their name and get their internal id . Do you have any ideas how I should do this in Q?

Answer 1

I guess there is No way to get Configured WiFi Networks in Android Q and Above. The only is to get the currently available networks using getScanResults() I know this wont actually solve the issue for getting the configured network names. Instead only gets the currently available networks.

    List<ScanResult> results = null;
    TextView outputs = (TextView)findViewById(R.id.outputs);
    try{
        WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
        results = wifiManager.getScanResults();
        int len = results.size();
        String res = null;
        for (int i = 0; i < len; i++) {
            res = outputs.getText() + "\n" + results.get(i).SSID;
            outputs.setText(res);

        }

    }
    catch(Exception e)
    {
        Log.e("MainActivity",e.getMessage());
    }

Currently they are only providing mechanism to trigger connection to a WiFi Network as per their documentations. Lets hope something comes up or not

Answer 2

i had the same problem, and my problem was that I has mi targetSdkVersion in 30! and the function getConfiguredNetworks was deprecated in api 29, when I run my app in a android 9 devices or below, works great but when I run my app into android 10, the function getConfiguredNetworks return null or empty list, my solution was change my targetSdkVersion to 28, like this

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.0"

    defaultConfig {
        applicationId "asdaadsda"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

References: https://developer.android.com/reference/android/net/wifi/WifiManager#getConfiguredNetworks()

Answer 3

dexOptions {
    javaMaxHeapSize "4g"
}

buildTypes {
           buildTypes {
    release {
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
       minifyEnabled true
    }
}