package se.leap.bitmaskclient.base.utils; import android.content.Context; import java.lang.reflect.Method; public class SystemPropertiesHelper { /** * Checks if SystemProperties contains a given key using reflection * @return true if reflection was successful and the key was found */ public static boolean contains(String key, Context context) { String result = null; try { ClassLoader cl = context.getClassLoader(); @SuppressWarnings("rawtypes") Class SystemProperties = cl.loadClass("android.os.SystemProperties"); @SuppressWarnings("rawtypes") Class[] paramTypes= new Class[1]; paramTypes[0]= String.class; Method get = SystemProperties.getMethod("get", paramTypes); Object[] params= new Object[1]; params[0]= key; result = (String) get.invoke(SystemProperties, params); } catch (Exception e) { e.printStackTrace(); } return result != null; } }