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Add method to check state of canWrite permission #92

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Add method to check state of canWrite permission #92

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16 changes: 16 additions & 0 deletions android/src/main/java/com/devstepbcn/wifi/AndroidWifiModule.java
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,8 @@
import org.json.JSONException;
import org.json.JSONObject;

import com.facebook.react.bridge.Promise;

public class AndroidWifiModule extends ReactContextBaseJavaModule {

//WifiManager Instance
Expand Down Expand Up @@ -91,6 +93,20 @@ public void loadWifiList(Callback successCallback, Callback errorCallback) {
}
}

//Returns a promise that resolves a boolean of wether or not the canWrite
//permission has been granted
@ReactMethod
public void checkCanWrite(Promise promise) {
boolean canWrite = true;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Build.VERSION.RELEASE.toString().equals("6.0.1")) {
// In versions >= 6.0.1, we no longer need to request permission to write to settings.
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// In version 6.0.0, we need to request permission to write to settings in order to forceWifi.
canWrite = Settings.System.canWrite(reactContext);
}
promise.resolve(canWrite);
}

//Method to force wifi usage if the user needs to send requests via wifi
//if it does not have internet connection. Useful for IoT applications, when
//the app needs to communicate and send requests to a device that have no
Expand Down