Generate unique id android

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. When I send multiple push notifications, I need them to be all shown in the notification bar ordered by the time sent desc. I know I should use unique notification - I tried to generate random number but that did not solve my problem since I need them to be ordered.

I tried to use AtomicInt and still don't have the desired result. I need the BEST and simplest way to generate an int id which is incremental to assign it as the notification id. You are using the same notification ID the value is always 1 for all your notifications. You probably should separate out the notification ID into a separate singleton class:. Then use NotificationID. EDIT: As racs points out in a comment, the above approach is not enough to ensure proper behavior if your app process happens to be killed.

At a minimum, the initial value of the AtomicInteger should be initialized from some activity's saved state rather than starting at 0. If the notification IDs need to be unique across restarts of the app again, where the app process may be killed offthen the latest value should be saved somewhere probably to shared prefs after every increment and restored when the app starts.

The bad: time is a long and we're truncating it to half of that. If someone reading this, there is a method here. NOTE: The problem with assigning some random integer id is that, if any module or library uses the same id, your notification will be replaced by new notification data. Checkout this method in official documentaation.

I suggest using any timestamp SystemClock. Learn more. Generate int unique id as android notification id Ask Question. Asked 5 years, 9 months ago. Active 7 months ago. Viewed 49k times. AtomicInteger; import android. IntentService; import android. Notification; import android. NotificationManager; import android.

PendingIntent; import android. Context; import android. Intent; import android. Color; import android. Bundle; import android. SystemClock; import android. NotificationCompat; import android.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. That's the core of how I generate my uuid. The thing is this weekend someone with an XT and android 5. This method that I use can be tricked somehow? Maybe with a rooted phone? I'm shooting in the blind. I need to be able to create reliable UUIDs between installations. There is no way to be sure whether this is the reason, but looking at the code here:.

A simple way to generate a different UUID for same device would be simply to insert a different sim card. Which I know is cumbersome, but doable nonetheless. So another way would be to change the IMEI of the device.

generate unique identifier ID on all platforms ? web/Android/iOS

If you only google "change phone IMEI without root" you will get loads of doable results. Which might be an easier way if automated. So again user can change UUID just by restoring phone. Since your UUID is based on a chain of three unique ids fooling the system is as easy as the weakest link in your chain. Refer to this link as an alternative.

If that is the only criteria, the proposal in this answer is your best bet. For more info please read google's Best Practices for Unique Identifiers. It is a must read.

Generate unique id android

Learn more. Asked 3 years, 7 months ago. Active 3 years, 7 months ago. Viewed 22k times. Active Oldest Votes. Abbas Abbas 2, 4 4 gold badges 25 25 silver badges 50 50 bronze badges. Yeah, you're right. Do you happen to know if java.I have created an app for notification. Or can I use the same one over and over. Like the person who started that thread, I need to get a unique ID for a device, without using scary permissions for TelephonyManager. I'm using a Nexus One and Android 2.

Is there some method in which i can identify a phone, a serial number or something similar that's accessible by code? I tried with the selectionArgs argument but failed.

Generate unique id android

I want to provide a web-service with actions that can only be performed once per resource per user. Maybe there is a different way to go about this. Any ideas? I have a map with many overlayitems on it, they look all the same simple bubbleWhen the user clicks on one overlayitem a detailpopup is shown. I would like to draw a numbering every overlayitem - but how could i accomplish this?

I tried to extend overlayitem and overwrite the draw method but now, everthing get a shadow also the number. What it is the best way to do this? I'm looking for a way to identify a phone by a unique string or number.

That is, get a phone to give out a code which I can say is unique to that specific phone. Is there any other way? So, does a program have an unique identifier? How can I get it? I googled it but got nothing. Is there any way to get some type of serial number or unique string, that no other android device should have? It can't be relative to the sim card, I'm looking for some type of hardware identification number Is it possible to determine the unique bluetooth MAC address for an iPhone and an Android and to a lesser extent, other smartphones from within an app on said device?

Is my assumption that the MAC address is universally unique correct? A general yes or no would be helpful.Actually this kind of problem still happens in others platforms, mainly in web since there is no reliable way to know for certainwho that anonymous user is and which devices he is using.

A simple Google search and you can find some StackOverflow threads which can enlighten your pursuit, but instead of just copy and paste the first checked answer, as a good developeryou should analyze all alternatives and this post can help you out. Google recommendation is described below in 4 basic points:. Avoid using hardware identifiers. Only use an Advertising ID for user profiling or ads use cases. Also, ensure that the identifier cannot be connected to personally identifiable information PIIand avoid bridging Advertising ID resets.

Use an Instance ID or a privately stored GUID whenever possible for all other use cases, except for payment fraud prevention and telephony. Use APIs that are appropriate for your use case to minimize privacy risk. The SafetyNet APIs are the easiest way to determine whether a device is genuine without incurring privacy risk.

Pseudo Unique ID is basically a generated string, often encoded in base64 created by many data pieces together. Likewise if you are working in an app store or marketplace kind of product, the most easy thinkable approach could be one pseudo ID which concat IMEI, Build.

Updated April MAC address randomization. On devices that run Android 10 or higher, the system transmits randomized MAC addresses by default. More at docs. You can access phone info easily using snippet in gist above, but in order to fetch those info, you need put one more permission at AndroidManifest. Restriction on non-resettable device identifiers. Caution: Third-party apps installed from the Google Play Store cannot declare privileged permissions.

You can use code below:. You also be able to use some data info from device provided by Build classfor instancein order to have such a device profile, which in worst case can be used to segment different audience.

This technique is still used by Firebase, Crashlytics and many other analytics tracker and crash report SDK tools. It can be saved in a durable way in the storage regarding your use case, which is out of the scope of the post. Sign in. Submit Archive About Events droidcon. How to generate Android Unique ID. William Gouvea Follow.

ProAndroidDev Follow. Written by William Gouvea Follow. See responses 5. More From Medium. AndroidX: App Startup. Husayn Hakeem in ProAndroidDev. Hilt: First Impressions. Remco Mokveld in ProAndroidDev. Android Studio: Layout Inspector. Andrew Japar in ProAndroidDev. Sequences x Iterable in Kotlin. Sherry Yuan in ProAndroidDev.I was recently working on an application that had a sharded MySQL database.

While working on this application, I needed to generate unique IDs that could be used as the primary keys in the tables. So I looked at various existing solutions for this, and finally wrote a simple bit unique ID generator that was inspired by a similar service by Twitter called Twitter snowflake.

UUIDs are bit hexadecimal numbers that are globally unique. The chances of the same UUID getting generated twice is negligible. When your dataset increases, the index size increases as well and the query performance takes a hit. This is smaller than the earlier bit UUID. But again the size is relatively longer than what we normally have in a single MySQL auto-increment field a bit bigint value.

This approach uses a centralized database server to generate unique incrementing IDs. This approach is used by Flickr. The problem with this approach is that the ticket server can become a write bottleneck. Moreover, you introduce one more component in your infrastructure that you need to manage and scale. Twitter snowflake is a dedicated network service for generating bit unique IDs at high scale.

The IDs generated by this service are roughly time sortable. The extra 1 bit is reserved for future purposes. Since the IDs use timestamp as the first component, they are time sortable. The IDs generated by twitter snowflake fits in bits and are time sortable, which is great. Finally, I wrote a simple sequence generator that generates bit IDs based on the concepts outlined in the Twitter snowflake service.

Your microservices can use this Sequence Generator to generate IDs independently. This is efficient and fits in the size of a bigint. You can also supply a NodeID to the sequence generator. That will guarantee uniqueness. The epoch timestamp for this particular time is Now, the first 41 bits of the ID after the signed bit will be filled with the epoch timestamp.

Next, we take the configured node ID and fill the next 10 bits with the node ID. Finally, we fill the last 12 bits with the local counter.Actually this kind of problem still happens in others platforms, mainly in web since there is no reliable way to know for certainwho that anonymous user is and which devices he is using.

Google recommendation is described below in 4 basic points:.

Getting a unique ID signature for every android device

Avoid using hardware identifiers. Only use an Advertising ID for user profiling or ads use cases. Also, ensure that the identifier cannot be connected to personally identifiable information PIIand avoid bridging Advertising ID resets. Use APIs that are appropriate for your use case to minimize privacy risk. The SafetyNet APIs are the easiest way to determine whether a device is genuine without incurring privacy risk.

Pseudo Unique ID is basically a generated string, often encoded in base64 created by many data pieces together. Likewise if you are working in an app store or marketplace kind of product, the most easy thinkable approach could be one pseudo ID which concat IMEI, Build.

You can access phone info easily using snippet in gist above, but in order to fetch those info, you need put one more permission at AndroidManifest. You can use code below:. You also be able to use some data info from device provided by Build classfor instancein order to have such a device profile, which in worst case can be used to segment different audience. This technique is still used by Firebase, Crashlytics and many other analytics tracker and crash report SDK tools. If you have ever implemented analytics on Android you know how hard it can be to attach it to the existing app structure.

However, once the quantity of events starts to increase, support becomes really difficult. AdMob allows you to monetize your apps by serving ads selected according to criteria you define. With Android 10 rolling out in more and more devices every month, the need for an Android app to support dark mode is on the rise. And if you haven't already updated your app to support Dark theme, your app could soon appear to be an outdated application.

All rights reserved. An amazing analytics architecture for Android apps! Part 1. By ProAndroidDev. Adding Google AdMob to an Android application.

Generate unique id android

Implementing Dark theme in your Android Application. By Kunal Chaubal With Android 10 rolling out in more and more devices every month, the need for an Android app to support dark mode is on the rise. Follow us.

Team droidcon. Get in touch with us Write us an Email. William Gouvea. Android News Implementing Dark theme in your Android Application By Kunal Chaubal With Android 10 rolling out in more and more devices every month, the need for an Android app to support dark mode is on the rise.You have to make those implementations yourself. We are using the Settings. I will write about that exact system in one of my next posts, so make sure you follow our blog or social profiles links are to the right on a regular basis :.

Other than the comments in code above, let me just walk you through the methods of getting the ID:. Generating AndroidID in this order gives you a more than enough safe way to get a unique signature. Generation occurs only the first time, and later on uses cache to fetch the ID. ID can be changed, so if it does, the phone does not get the same unique id anymore. Yes, you are right, but there is actually no way to solve that problem if you involve somebody willing to inflate the system and change devices AndroidID, or try to go around any other method you use.

Thus being said, our method does offer you a unique ID in high percent of cases like i mentioned above. In summary, this method has a high probability of returning a unique device ID, but when that fails, defaults to returning either the TelephonyManager unique ID or an installation-scoped ID. The use case for a device ID may be very different from the use case for an installation ID and it is dangerous to return the latter without warning the caller of this difference.

I have a made an image of my android tablet device using Clonezilla. I want to deploy this image to a number of tablets but the issue I now have is the Device ID will be the same for each device. Is it possible to delete the Device ID from the image by opening it and on first boot it will generate a new ID? Your email address will not be published. Profico team is back from Las Vegas!

How to Generate Random or Unique Number or ID and Check Internet Connectivity in Android Studio

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Unique ID for programmatically created controls

Contact us and tell us about your project, and we will get back to you shortly! Please leave this field empty. A problem often encountered while trying to keep track on your users actions is how to get a device identification for every user that installed your application.

We will give you a simple Class that uses all those methods in order to give you confidence.


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