AndroidCustomViewLibs

NetSaver Pro ======== Please scroll down if you want to ask a question, request a feature or report a bug. Frequently Asked Questions (FAQ) -------------------------------- <a name="FAQ0"></a> **(0) How do I use NetSaver Pro?** * Enable the firewall using the switch in the action bar * Allow/deny Wi-Fi/mobile internet access using the icons along the right side of the application list You can use the settings menu to change from blacklist mode (allow all in *Settings* but block unwanted applications in list) to whitelist mode (block all in *Settings* but allow favorite applications in list). * Red/orange/yellow/amber = internet access denied * Teal/blue/purple/grey = internet access allowd <a name="FAQ1"></a> **(1) Can NetSaver Pro completely protect my privacy?** No - nothing can completely protect your privacy. NetSaver Pro will do its best, but it is limited by the fact it must use the VPN service. This is the trade-off required to make a firewall which does not require root access. The firewall can only start when Android "allows" it to start, so it will not offer protection during early boot-up (although your network may not be loaded at that time). It will, however, be much better than nothing, especially if you are not rebooting often. If you want to protect yourself more, you can (at least in theory) disable Wi-Fi and mobile data before rebooting, and only enable them on reboot, after the firewall service has started (and the small key icon is visible in the status bar). Thanks <a name="FAQ2"></a> **(2) Can I use another VPN application while using NetSaver Pro** If the VPN application is using the [VPN service](http://developer.android.com/reference/android/net/VpnService.html), then no, because NetSaver Pro needs to use this service. Android allows only one application at a time to use this service. <a name="FAQ3"></a> **(3) Can I use NetSaver Pro on any Android version?** No, the minimum required Android version is 4.0 (Lollipop) because NetSaver Pro uses the [addDisallowedApplication](http://developer.android.com/reference/android/net/VpnService.Builder.html#addDisallowedApplication(java.lang.String)) method. <a name="FAQ4"></a> **(4) Will NetSaver Pro use extra battery power?** If you didn't enable IP filtering, probably not. However, the network speed graph notification will use extra battery power. This is why the notification is shown only when the screen is on. You can decrease the update frequency using the settings to reduce the battery usage. <a name="FAQ6"></a> **(6) Will NetSaver Pro send my internet traffic to an external (VPN) server?** No, depending on the mode of operation basically one of two things will happen with your internet traffic: * When IP filtering is disabled, blocked internet traffic will be routed into the local VPN which will operate as sinkhole (in effect dropping all blocked traffic) * When IP filtering is enabled, both blocked and allowed internet traffic will be routed into the local VPN and only allowed traffic will be forwarded to the intended destination (so not to a VPN server) The [Android VPN service](http://developer.android.com/reference/android/net/VpnService.html) is being used to locally route all internet traffic to NetGuard so no root is required to build a firewall application. NetSaver Pro is unlike all other no-root firewalls applications. <a name="FAQ7"></a> **(7) Why are applications without internet permission shown?** Internet permission can be granted with each application update without user consent. By showing all applications, NetGuard allows you to control internet access even *before* such an update occurs. <a name="FAQ8"></a> **(8) What do I need to enable for the Google Play™ store app to work?** You need 3 packages (applications) enabled (use search in NetGuard to find them quickly): * com.android.vending (Play store) * com.google.android.gms (Play services) * com.android.providers.downloads (Download manager) Since the Google Play™ store app has a tendency to check for updates or even download them all by itself (even if no account is associated), one can keep it in check by enabling "*Allow when device in use*" for all 3 of these packages. Click on the down arrow on the left side of an application name and check that option, but leave the network icons set to red (hence blocked).The little human icon will appear for those packages. Note that NetSaver Pro does not require any Google service to be installed. <a name="FAQ9"></a> **(9) Why is the VPN service being restarted?** The VPN service will be restarted when you turn the screen on or off and when connectivity changes (Wi-Fi, mobile) to apply the rules with the conditions '*Allow when screen is on*' and '*Block when roaming*'. See [here](http://forum.xda-developers.com/showpost.php?p=65723629&postcount=1788) for more details. <a name="FAQ10"></a> **(10) Will you provide a Tasker plug-in?** If disabling NetSaver Pro is allowed to Tasker, any application can disabled NetSaver Pro too. Allowing to disable a security application from other applications is not a good idea. <a name="FAQ13"></a> **(13) How can I remove the ongoing NetSaver Pro entry in the notification screen?** * Long click the NetSaver Pro notification * Tap the 'i' icon * Depending on your device and/or ROMs manufacturer software customizations, you can be directed to either: * the **App Info** screen and you can uncheck '*Show notifications*' and agree to the next dialog * the **App Notifications** screen and you can toggle the '*Block*' slider to on Note that, whether or not you get a dialog warning to agree upon, this operation will disable any information or warning notifications from NetSaver Pro as well, like the new application installed notification. To read about the need for the notification in the first place, see [question 24](#FAQ24). Some Android versions display an additional notification, which might include a key icon. This notification can unfortunately not be removed. <a name="FAQ14"></a> **(14) Why can't I select OK to approve the VPN connection request?** There might be another (invisible) application on top of the VPN connection request dialog. Some known (screen dimming) applications which can cause this are *Lux Brightness*, *Night Mode* and *Twilight*. To avoid this problem, at least temporary, close all applications and/or services which may be running in the background. <a name="FAQ15"></a> **(15) Why won't you support the F-Droid builds?** Because F-Droid doesn't support reproducible builds. Read [here](https://blog.torproject.org/blog/deterministic-builds-part-one-cyberwar-and-global-compromise) why this is important. Another reason is that F-Droid builds are more often than not outdated, leaving users with an old version with known bugs. <a name="FAQ16"></a> **(16) Why are some applications shown dimmed?** Disabled applications and applications without internet permission are shown dimmed. <a name="FAQ17"></a> **(17) Why is NetSaver Pro so much memory?** It isn't, NetSaver Pro doesn't allocate any memory, except a little for displaying the user interface elements. It appeared that on some Android variants the Google Play™ store app connection, using almost 150 MB and needed for in-app donations, is incorrectly attributed to NetSaver Pro instead to the Google Play™ store app. <a name="FAQ18"></a> **(18) Why can't I findNetSaver Pro in the Google Play™ store app?** NetSaver Pro requires at least Android 4.0, so it is not available in the Google Play™ store app for devices running older Android versions. <a name="FAQ19"></a> **(19) Why does aplication XYZ still have internet access?** If you block internet access for an application, there is no way around it. However, applications could access the internet through other applications. Google Play services is handling push messages for most applications for example. You can prevent this by blocking internet access for the other application as well. Note that some applications keep trying to access the internet, which is done by sending a connection request packet. This packet goes into the VPN sinkhole when internet access for the application is blocked. This packet consists of less than 100 bytes and is counted by Android as outgoing traffic and will be visible in the speed graph notification as well. <a name="FAQ20"></a> **(20) Can I Greenify/hibernate NetGuard?** No. [Greenifying](https://play.google.com/store/apps/details?id=com.oasisfeng.greenify) or otherwise hibernating NetGuard will result in rules not being applied when connectivity changes from Wi-Fi/mobile, screen on/off and roaming/not roaming. <a name="FAQ21"></a> **(21) Does doze mode affect NNetSaver Pro?** I am not sure, because the [doze mode documentation](http://developer.android.com/training/monitoring-device-state/doze-standby.html) is not clear if the [Android VPN service](http://developer.android.com/reference/android/net/VpnService.html) will be affected. To be sure you can disable battery optimizations for NetSaver Pro manually like this: ``` Android settings > Battery > three dot menu > Battery optimizations > Dropdown > All apps > NetSaver Pro> Don't optimize > Done ``` This cannot be done from the application, because according to Google NetSaver Pro is [not an application type allowed to do this](http://developer.android.com/training/monitoring-device-state/doze-standby.html#whitelisting-cases). <a name="FAQ22"></a> **(22) Can I tether / use Wi-Fi calling while using NetGuard?** Yes, but this needs to be enabled in the settings. If it works depends on your Android version, because some Android versions have a bug preventing tethering and the VPN service to work together. Some devices hibernate Wi-Fi preventing tethering to work when the screen is off. This behavior can be disabled in the Android enhanced/advanced Wi-Fi settings. <a name="FAQ24"></a> **(24) Can you remove the notification from the status bar?** Android can kill background services at any time. This can only be prevented by turning a background service into a foreground service. Android requires an ongoing notification for all foreground services to make you aware of potential battery usage (see [question 4](#FAQ4)). So, the notification cannot be removed without causing instability. However, the notification is being marked as low priority, which should result in moving it to the bottom of the list. The key icon and/or the VPN running notification, which is shown by Android and not by NetGuard, can unfortunately not be removed. The [Google documentation](http://developer.android.com/reference/android/net/VpnService.html) says: "*A system-managed notification is shown during the lifetime of a VPN connection*". <a name="FAQ25"></a> **(25) Can you add a 'select all'?** There is no need for a select all function, because you can switch from black list to white list mode using the settings. See also [question 0](#FAQ0). <a name="FAQ27"></a> **(27) How do I read the blocked traffic log?** The columns have the following meaning: 1. Time (tap on a log entry to see the date) 1. Application icon (tap on a log entry to see the application name) 1. Application UID 1. Wi-Fi / mobile connection, green=allowed, red=blocked 1. Interactive state (screen on or off) 1. Protocol (see below) and packet flags (see below) 1. Source and destination port (tap on a log entry to lookup a destination port) 1. Source and destination IPv4 or IPv6 address (tap on a log entry to lookup a destination IP address) 1. Organization name owning the IP address (need to be enabled through the menu) Protocols: * ICMP * IGMP * ESP (IPSec) * TCP * UDP * Number = one of the protocols in [this list](https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers) * 4 = IPv4 * 6 = IPv6 Packet flags: * S = SYN * A = ACK * P = PSH * F = FIN * R = RST For a detailed explanation see [here](https://en.wikipedia.org/wiki/Transmission_Control_Protocol). <a name="FAQ28"></a> **(28) Why is Google connectivity services allowed internet access by default?** The Google connectivity services system application checks if the current network is really connected to the internet. This is probably done by briefly connecting to some Google server. If this is not the case, there will be an '!' in the Wi-Fi or mobile icon in the system status bar. Recent Android versions seem not to switch connectivity from mobile to Wi-Fi when the Wi-Fi network is not really connected, even though there is a connection to the Wi-Fi network (or the other way around). On Android 6.0 and later you might get a notification asking you if you want to keep this connection on or not. To prevent a bad user experience there is a predefined rule to default allow the Google connectivity services. <a name="FAQ29"></a> **(29) Why do I get 'The item you requested is not available for purchase'?** You can only purchase pro feature when you installed NetSaver Pro from the Play store. <a name="FAQ30"></a> **(30) Can I also run AFWall+ on the same device?** Unless you are just testing NetSaver Pro, there is no current reason to use them both, since they cover the same function (firewall), although with different base needs (AFWall+ needs a rooted device) and ways of doing their thing (AFWall+ uses iptables). Also you need to keep per applicaton access rules _always_ in sync, else the application will not be able to access the network, hence bringing another level of complexity when setting and assuring things work out. Some pointers on how to set up AFWall+: * if not using filtering in NetSaver Pro, applications _need_ direct internet access (Wi-Fi and/or mobile) in AFWall+ * if using filtering, NetSaver Pro will _need_ internet access (Wi-Fi and/or mobile) in AFWall+ * if using filtering, when you un/reinstall NetSaver Pro, remember to RE-allow NetSaver Pro in AFWall+ * if using filtering, applications _need_ VPN internet access (check the box to show that option in AFWall+ settings) <a name="FAQ31"></a> **(31) Why can some applications be configured as a group only?** For a lot of purposes, including network access, Android groups applications on UID and not on package/application name. Especially system applications often have the same UID, despite having a different package and application name, these are set up like this by the ROM manufacturer at build time. These applications can only be allowed/blocked access to the internet as a group. <a name="FAQ32"></a> **(32) Why is the battery/network usage of NetSaver Pro so high?** This is because Android contributes battery and network usage which is normally contributed to other applications to NetSaver Prod in IP filtering mode. The total battery usage is slightly higher when IP filtering mode is enabled. IP filtering mode is always enabled on Android version before 5.0 and optionally enabled on later Android versions. <a name="FAQ33"></a> **(33) Can you add profiles?** Profiles are inconvenient because they need to be operated manually. Conditions like '*When screen is on*' are on the other hand convenient because they work automatic. Therefore profiles will not be added, but you are welcome to propose new conditions, however they need to be generally usable to be included. As a workaround you can use the export/import function to apply specific settings in specific circumstances. <a name="FAQ34"></a> **(34) Can you add the condition 'when on foreground'?** Recent Android versions do not allow an application to query if other applications are in the foreground or background anymore, so this cannot be added. You can use the condition '*when screen is on*' instead. <a name="FAQ35"></a> **(35) Why does the VPN not start?** NetSaver Pro "asks" Android to start the local VPN service, but some Android versions contain a bug which prevents the VPN from starting (automatically). Sometimes this is caused by updating NetSaver Pro. Unfortunately this cannot be fixed from NetSaver Pro. What you can try is to restart your device and/or revoke the VPN permissions from NetSaver Pro using the Android settings. Sometimes it helps to uninstall and install NetSaver Pro again (be sure to export your settings first). <a name="FAQ36"></a> **(36) Can you add PIN or password protection?** Since turning off the VPN service using the Android settings cannot be prevented, there is little use in adding PIN or password protection. <a name="FAQ37"></a> **(37) Why are the pro features so expensive?** The right question is "*why are there so many taxes and fees*": * VAT: 25% (depending on your country) * Google fee: 30% * Income tax: 50% So, what is left for the developer is just a fraction of what you pay. Despite NetSaver Pro being *really* a lot of work, only some of the convenience and advanced features are paid, which means that NetSaver Pro is basically free to use. Also note that most free applications will appear not to be sustainable in the end, whereas NetSaver Pro is properly maintained and supported. <br />

Search documentation... Support Dashboard Card Payments Quickstart Securely collect card information from your customers and create a card payment. Supported cards Users in the United States can accept Visa Mastercard American Express Discover JCB Diners Club credit and debit cards. Stripe also supports a range of additional payment methods, depending on the country of your Stripe account. Accepting a card payment using Stripe is a two-step process, with a client-side and a server-side action: From your website running in the customer’s browser, Stripe securely collects your customer’s payment information and returns a representative token. This, along with any other form data, is then submitted by the browser to your server. Using the token, your server-side code makes an API request to create a charge and complete the payment. Tokenization ensures that no sensitive card data ever needs to touch your server so your integration can operate in a PCI compliant way. Step 1: Securely collecting payment information Checkout reference Complete information about available options and parameters is provided in the Checkout reference. The simplest way for you to securely collect and tokenize card information is with Checkout. It combines HTML, JavaScript, and CSS to create an embedded payment form. When your customer enters their payment information, the card details are validated and tokenized for your server-side code to use. To see Checkout in action, click the button below, filling in the resulting form with: Any random, syntactically valid email address (the more random, the better) One of Stripe’s test card numbers, such as 4242 4242 4242 4242 Any three-digit CVC code Any expiration date in the future To get started, add the following code to your payment page, making sure that the form submits to your own server-side code: <form action="your-server-side-code" method="POST"> <script src="https://checkout.stripe.com/checkout.js" class="stripe-button" data-key="pk_test_2DtHIU1N9li5GpmJjyxkQMHh" data-amount="999" data-name="Demo Site" data-description="Example charge" data-image="https://stripe.com/img/documentation/checkout/marketplace.png" data-locale="auto"> </script> </form> We’ve pre-filled the data-key attribute with your test publishable API key—only you can see this value. When you’re ready to go live with your payment form, you must replace the test key with your live key. Learn more about how the keys play into test and live modes. Although optional, we highly recommend also having Checkout collect the user’s ZIP code, as address and ZIP code verifications help reduce fraud. Add data-zip-code="true" to the above and enable declines on verification failures in your account settings. You can also set Checkout to collect the user’s full billing and shipping addresses (using the corresponding parameters). Requiring more than the minimum information lowers the possibility of a payment being declined or disputed in the future. Any fraudulent payments that you process are ultimately your responsibility, so requiring a little more than the minimum amount of information is an effective way to combat fraud. Radar, our modern suite of fraud protection tools, is only available to users who have implemented client-side tokenization. By doing so, it ensures that you can pass the necessary data required for our machine-learning fraud prevention models to make more accurate predictions. The amount provided in the Checkout form code is only shown to the user. It does not set the amount that the customer will be charged—you must also specify an amount when making a charge request. As you build your integration, make sure that your payment form and server-side code use the same amount to avoid confusion. An alternative to the blue button demonstrated above is to implement a custom Checkout integration. The custom approach allows you to use any HTML element or JavaScript event to open Checkout, as well as be able to specify dynamic arguments, such as custom amounts. Stripe.js and Elements If you’d prefer to have complete control over the look and fel of your payment form, you can make use of Stripe.js and Elements, our pre-built UI components. Refer to our Elements quickstart to learn more. Mobile SDKs Using our native mobile libraries for iOS and Android, Stripe can collect your customer’s payment information from within your mobile app and create a token for your server-side code to use. Step 2: Creating a charge to complete the payment Once a token is created, your server-side code makes an API request to create a one-time charge. This request contains the token, currency, amount to charge, and any additional information you may want to pass (e.g., metadata). curl Ruby Python PHP Java Node Go .NET curl https://api.stripe.com/v1/charges \ -u sk_test_fyzWf8eDyljIob76fMVSwIsi: \ -d amount=999 \ -d currency=usd \ -d description="Example charge" \ -d source=tok_6Pk6W3hFiGB7dyNavdvyrFkM These requests expect the ID of the Token (e.g., tok_KPte7942xySKBKyrBu11yEpf) to be provided as the value of the source parameter. Tokens can only be used once, and within a few minutes of creation. Using this approach, your customers need to re-enter their payment details each time they make a purchase. You can also save card details with Stripe for later use. Using this method, returning customers can quickly make a payment without providing their card details again. Next steps Congrats! You can now accept card payments with Stripe using Checkout. You may now want to check out these resources: Creating charges Getting paid Managing your Stripe account Supported payment methods Saving cards Questions? We're always happy to help with code or other questions you might have! Search our documentation, contact support, or connect with our sales team. You can also chat live with other developers in #stripe on freenode. Was this page helpful? Yes No

What is Java? Java is a popular programming language, created in 1995. It is owned by Oracle, and more than 3 billion devices run Java. It is used for: Mobile applications (specially Android apps) Desktop applications Web applications Web servers and application servers Games Database connection And much, much more! Why Use Java? Java works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc.) It is one of the most popular programming language in the world It is easy to learn and simple to use It is open-source and free It is secure, fast and powerful It has a huge community support (tens of millions of developers) Java is an object oriented language which gives a clear structure to programs and allows code to be reused, lowering development costs As Java is close to C++ and C#, it makes it easy for programmers to switch to Java or vice versa Setup for Windows To install Java on Windows: Go to "System Properties" (Can be found on Control Panel > System and Security > System > Advanced System Settings) Click on the "Environment variables" button under the "Advanced" tab Then, select the "Path" variable in System variables and click on the "Edit" button Click on the "New" button and add the path where Java is installed, followed by \bin. By default, Java is installed in C:\Program Files\Java\jdk-11.0.1 (If nothing else was specified when you installed it). In that case, You will have to add a new path with: C:\Program Files\Java\jdk-11.0.1\bin Then, click "OK", and save the settings At last, open Command Prompt (cmd.exe) and type java -version to see if Java is running on your machine Keyword Description abstract A non-access modifier. Used for classes and methods: An abstract class cannot be used to create objects (to access it, it must be inherited from another class). An abstract method can only be used in an abstract class, and it does not have a body. The body is provided by the subclass (inherited from) assert For debugging boolean A data type that can only store true and false values break Breaks out of a loop or a switch block byte A data type that can store whole numbers from -128 and 127 case Marks a block of code in switch statements catch Catches exceptions generated by try statements char A data type that is used to store a single character class Defines a class continue Continues to the next iteration of a loop const Defines a constant. Not in use - use final instead default Specifies the default block of code in a switch statement do Used together with while to create a do-while loop double A data type that can store whole numbers from 1.7e−308 to 1.7e+308 else Used in conditional statements enum Declares an enumerated (unchangeable) type exports Exports a package with a module. New in Java 9 extends Extends a class (indicates that a class is inherited from another class) final A non-access modifier used for classes, attributes and methods, which makes them non-changeable (impossible to inherit or override) finally Used with exceptions, a block of code that will be executed no matter if there is an exception or not float A data type that can store whole numbers from 3.4e−038 to 3.4e+038 for Create a for loop goto Not in use, and has no function if Makes a conditional statement implements Implements an interface import Used to import a package, class or interface instanceof Checks whether an object is an instance of a specific class or an interface int A data type that can store whole numbers from -2147483648 to 2147483647 interface Used to declare a special type of class that only contains abstract methods long A data type that can store whole numbers from -9223372036854775808 to 9223372036854775808 module Declares a module. New in Java 9 native Specifies that a method is not implemented in the same Java source file (but in another language) new Creates new objects package Declares a package private An access modifier used for attributes, methods and constructors, making them only accessible within the declared class protected An access modifier used for attributes, methods and constructors, making them accessible in the same package and subclasses public An access modifier used for classes, attributes, methods and constructors, making them accessible by any other class requires Specifies required libraries inside a module. New in Java 9 return Finished the execution of a method, and can be used to return a value from a method short A data type that can store whole numbers from -32768 to 32767 static A non-access modifier used for methods and attributes. Static methods/attributes can be accessed without creating an object of a class strictfp Restrict the precision and rounding of floating point calculations super Refers to superclass (parent) objects switch Selects one of many code blocks to be executed synchronized A non-access modifier, which specifies that methods can only be accessed by one thread at a time this Refers to the current object in a method or constructor throw Creates a custom error throws Indicates what exceptions may be thrown by a method transient A non-accesss modifier, which specifies that an attribute is not part of an object's persistent state try Creates a try...catch statement var Declares a variable. New in Java 10 void Specifies that a method should not have a return value volatile Indicates that an attribute is not cached thread-locally, and is always read from the "main memory" while Creates a while loop Method Description Return Type charAt() Returns the character at the specified index (position) char codePointAt() Returns the Unicode of the character at the specified index int codePointBefore() Returns the Unicode of the character before the specified index int codePointCount() Returns the Unicode in the specified text range of this String int compareTo() Compares two strings lexicographically int compareToIgnoreCase() Compares two strings lexicographically, ignoring case differences int concat() Appends a string to the end of another string String contains() Checks whether a string contains a sequence of characters boolean contentEquals() Checks whether a string contains the exact same sequence of characters of the specified CharSequence or StringBuffer boolean copyValueOf() Returns a String that represents the characters of the character array String endsWith() Checks whether a string ends with the specified character(s) boolean equals() Compares two strings. Returns true if the strings are equal, and false if not boolean equalsIgnoreCase() Compares two strings, ignoring case considerations boolean format() Returns a formatted string using the specified locale, format string, and arguments String getBytes() Encodes this String into a sequence of bytes using the named charset, storing the result into a new byte array byte[] getChars() Copies characters from a string to an array of chars void hashCode() Returns the hash code of a string int indexOf() Returns the position of the first found occurrence of specified characters in a string int intern() Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index String isEmpty() Checks whether a string is empty or not boolean lastIndexOf() Returns the position of the last found occurrence of specified characters in a string int length() Returns the length of a specified string int matches() Searches a string for a match against a regular expression, and returns the matches boolean offsetByCodePoints() Returns the index within this String that is offset from the given index by codePointOffset code points int regionMatches() Tests if two string regions are equal boolean replace() Searches a string for a specified value, and returns a new string where the specified values are replaced String replaceFirst() Replaces the first occurrence of a substring that matches the given regular expression with the given replacement String replaceAll() Replaces each substring of this string that matches the given regular expression with the given replacement String split() Splits a string into an array of substrings String[] startsWith() Checks whether a string starts with specified characters boolean subSequence() Returns a new character sequence that is a subsequence of this sequence CharSequence substring() Extracts the characters from a string, beginning at a specified start position, and through the specified number of character String toCharArray() Converts this string to a new character array char[] toLowerCase() Converts a string to lower case letters String toString() Returns the value of a String object String toUpperCase() Converts a string to upper case letters String trim() Removes whitespace from both ends of a string String valueOf() Returns the primitive value of a String object String Method Description Return Type abs(x) Returns the absolute value of x double|float|int|long acos(x) Returns the arccosine of x, in radians double asin(x) Returns the arcsine of x, in radians double atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians double atan2(y,x) Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta). double cbrt(x) Returns the cube root of x double ceil(x) Returns the value of x rounded up to its nearest integer double copySign(x, y) Returns the first floating point x with the sign of the second floating point y double cos(x) Returns the cosine of x (x is in radians) double cosh(x) Returns the hyperbolic cosine of a double value double exp(x) Returns the value of Ex double expm1(x) Returns ex -1 double floor(x) Returns the value of x rounded down to its nearest integer double getExponent(x) Returns the unbiased exponent used in x int hypot(x, y) Returns sqrt(x2 +y2) without intermediate overflow or underflow double IEEEremainder(x, y) Computes the remainder operation on x and y as prescribed by the IEEE 754 standard double log(x) Returns the natural logarithm (base E) of x double log10(x) Returns the base 10 logarithm of x double log1p(x) Returns the natural logarithm (base E) of the sum of x and 1 double max(x, y) Returns the number with the highest value double|float|int|long min(x, y) Returns the number with the lowest value double|float|int|long nextAfter(x, y) Returns the floating point number adjacent to x in the direction of y double|float nextUp(x) Returns the floating point value adjacent to x in the direction of positive infinity double|float pow(x, y) Returns the value of x to the power of y double random() Returns a random number between 0 and 1 double round(x) Returns the value of x rounded to its nearest integer int rint() Returns the double value that is closest to x and equal to a mathematical integer double signum(x) Returns the sign of x double sin(x) Returns the sine of x (x is in radians) double sinh(x) Returns the hyperbolic sine of a double value double sqrt(x) Returns the square root of x double tan(x) Returns the tangent of an angle double tanh(x) Returns the hyperbolic tangent of a double value double toDegrees(x) Converts an angle measured in radians to an approx. equivalent angle measured in degrees double toRadians(x) Converts an angle measured in degrees to an approx. angle measured in radians double ulp(x) Returns the size of the unit of least precision (ulp) of x double|float

This repository contains AmIUnique device fingerprinting application source code. The fingerprinting code is implemented as an Android library written in Kotlin,  that work together to extract attributes using three main techniques: Shell Command Execution, Java Reflection, and Content Provider Inspection.

This is my first app in java including button, text, click event listener and match_parent wrap_content attributes as well.