Questions Thread - May 23, 2016 |
- Questions Thread - May 23, 2016
- Weekly "who's hiring" thread!
- I whish that more devs implemented this feature. It's very handy if you mainly use one app to share stuff...
- Starting a new Rx library? Remember to respect the Observable lifecycle. Some tips.
- Eight Ways Your Android App Can Leak Memory - NimbleDroid
- Ported my RxJava Firebase wrapper to the new version
- Getting from ⭐️⭐️ to ⭐️⭐️⭐️⭐️⭐️
- What are your thoughts after using the new ConstraintLayout?
- Google I/O 2016 Presentation software?
- Monument Valley in Numbers: Year 2. Huge gap in Android and iOS
- From a single developers point-of-view, do you prefer iOS or Android and why?
- Choose your Android crypto
- Can I use the Android Trade Federation Library to save and compress logs in the app and distribute this on the play store?
- My App got rejected from Google Play
- Looking for an Android Programming Partner
- 10 common mistakes Android app developers make
- Is there any newer streaming(android to vlc) libraries like Libstreaming or newer examples of Libstreaming uses?
- How to improve the performance on a RecyclerView with a huge data-source
- Admob & Firebase and extra permissions.
- Vulkan Support in Android N
- How can I work with images and files without immediately running out of memory?
- Rewarded Surveys: The Answer To An App Publisher’s Revenue Prayers?
| Questions Thread - May 23, 2016 Posted: 23 May 2016 05:11 AM PDT This thread is for simple questions that don't warrant their own thread (although we suggest checking the sidebar, the wiki, or Stack Overflow before posting). Examples of questions:
Important: Downvotes are strongly discouraged in this thread. Sorting by new is strongly encouraged. Large code snippets don't read well on reddit and take up a lot of space, so please don't paste them in your comments. Consider linking Gists instead. Have a question about the subreddit or otherwise for /r/androiddev mods? We welcome your mod mail! Looking for all the Questions threads? Want an easy way to locate today's thread? Click this link! [link] [comments]  |
| Posted: 23 May 2016 06:32 AM PDT Looking for Android developers? Heard about a cool job posting? Let people know! Here is a suggested posting template:
Feel free to include any other information about the job. [link] [comments]  |
| Posted: 23 May 2016 03:39 PM PDT |
| Starting a new Rx library? Remember to respect the Observable lifecycle. Some tips. Posted: 23 May 2016 04:49 PM PDT Every other day there's a new Rx wrapper, I'm guilty of several of them myself, so here are some common advice I have to give to most projects I code review. 1.- Avoid Observable.create() when possible. If you're creating a wrapper there's a high chance you just have to call the methods and forward the result, so use Observable.fromCallable() instead. 2.- If your Observable returns 1 result, use Single instead. It's a subset of Observable specifically for that case. If your Observable doesn't return anything, use Completable instead. They can be converted to Observable by customers anyway so you might as well be explicit about the lifecycle of your operation. EDIT: /u/pandanomic points here that Single handles cancelling via takeUntil as an exception, so it may not fit all use cases. 3.- Now, once you make sure you have to use Observable.create():
4.- Write tests for your Observable internal lifecycle, not only the user-facing success/error, specially if you're using create. They're good for documentation, as sometimes samples may be too contrived to reflect some design choices. 5.- Observable<Boolean> is a bad design most of the time. An incomplete operation is a failure, so Completable may express the problem/solution better. Let the library users handle them using any of the error recovery operators. EDIT: There's a chance I've made a mistake or several above, so constructive additions are welcome and I will edit them in. [link] [comments]  |
| Eight Ways Your Android App Can Leak Memory - NimbleDroid Posted: 23 May 2016 06:14 AM PDT |
| Ported my RxJava Firebase wrapper to the new version Posted: 23 May 2016 12:16 PM PDT Upgraded my older library RxFirebaseAndroid to the new version from Google. Called RxRoboBase because RxGoogleFirebaseAndroid would've been even worse. Right now it has main Firebase and Firebase Auth features in a single module, but I'm planning on splitting them the same way Firebase did. I'll be adding Firebase Analytics and Firebase Storage as we use those in our product. The library is a bit sparse, right now it's pretty much 8 public methods, since I just added what we're using now. If you want to contribute, this one actually has tests, but you'll need an emulator and a Firebase repo set up in the new console. [link] [comments]  |
| Getting from ⭐️⭐️ to ⭐️⭐️⭐️⭐️⭐️ Posted: 23 May 2016 07:31 PM PDT |
| What are your thoughts after using the new ConstraintLayout? Posted: 23 May 2016 02:24 PM PDT I found it to be completely unusable as a tool. I tried even the most simple layouts of vertical textviews and text would appear/disappear randomly, things couldn't be clicked on, constraints wouldn't update, items couldn't be dragged. I understand that it's in preview, but I was wondering if anyone had any positive experience with it yet? [link] [comments]  |
| Google I/O 2016 Presentation software? Posted: 23 May 2016 11:02 AM PDT Does anyone have an idea what kind of presentation software were Googlers using at Google I/O 2016? There were some mentioning around in time they are using Keynote. I am a little sceptical though all level of control I saw at the sessions to be achieved with Keynote. [link] [comments]  |
| Monument Valley in Numbers: Year 2. Huge gap in Android and iOS Posted: 23 May 2016 05:49 AM PDT |
| From a single developers point-of-view, do you prefer iOS or Android and why? Posted: 23 May 2016 08:56 PM PDT I know this is somewhat of a common question, but I'm looking to get a detailed response from you guys. Please give a detailed reason. P.S., I'm aiming this to independent devs who write natively in both languages. [link] [comments]  |
| Posted: 23 May 2016 08:07 AM PDT |
| Posted: 23 May 2016 03:26 PM PDT I'm still an amateur android programmer and I want to compress and store logcat on an android device so that if the user's app crashes while offline, then his/her device will send the logcat feed when the device comes back online. I started reading about the Trade Federation Library. Something new and different about this to me is that it does not come automatically available. According to the android docs the source is saved in a git branch along with the normal Android source code, but i have to call something like: $ repo init -u https://…/manifest -b tradefed to enable the source code. Does this mean any code I use from this library wont be available to the user on their device? [link] [comments]  |
| My App got rejected from Google Play Posted: 23 May 2016 10:18 PM PDT Hello, yesterday, I submitted my first app to Google Play. After a few hours, I get notified that my app was rejected because it uses the word MensaMax in the description. This is in fact an app in the Google Play Store, but also a software to manage the menu of canteens. My app shows the menu of canteens that use MensaMax, but I can't put it in the description because then the app would get rejected. What can I do? I definitely have to mention that my app is only working for canteens that use MensaMax in the description because how else should the user know? Thank you all! [link] [comments]  |
| Looking for an Android Programming Partner Posted: 23 May 2016 12:17 PM PDT I have 1-2 years of Android experience especially in custom drawing on the canvas, custom views, and animations. I'm looking for someone with a similar level of Android exp to work with on a few just-for-fun side projects. I also have an eye for design and can do mockups on Photoshop (I should really switch over to Sketch soon but I just have so many years having worked with Photoshop). I have a penchant for clean, easy to use, productivity-oriented apps, but I'm pretty open-minded about the type of app to build. It is mainly for fun, after all. [link] [comments]  |
| 10 common mistakes Android app developers make Posted: 23 May 2016 09:23 PM PDT |
| Posted: 23 May 2016 10:23 AM PDT I've tried Spydroid and like 3,4 "examples". They've all been a pain to even open in Android Studio(probably written with Eclipse) and meant for super old versions of Android. Anyone knows a newer versions? [link] [comments]  |
| How to improve the performance on a RecyclerView with a huge data-source Posted: 22 May 2016 11:52 PM PDT Hi there, I have a RecyclerView that shows thousands of records, and although I implemented every optimization I knew and every trick I came across, on old devices like a Nexus 7 2012 the fragment that holds the RecyclerView takes over a second to show up because the garbage collector is triggered several times. Considering the scrolling performance is very satisfying, I don't think the problem is the inflate process: after all, the whole point of using RecyclerView is to inflate only a few rows and reuse them, and on top of that, the row-layout is very simple, basically just a handful of TextView. I believe the problem is that the thousands of POJOs that are being retrieved from the Realm database and kept in the adapter, are filling up the device's memory. One of the first solutions that you may be thinking of is lazy-loading, but unfortunately that solution doesn't fit one of the app's hard-requirements: I have to get all the data from the get-go because the RecyclerView has to be searchable right-away. Having the RecyclerView get the data from the database itself instead of preloading the data might be an idea, but I'm not sure about the implementation. Would you point me to the right direction? What other solution do you think may be viable to improve the situation? Thanks in advance. [link] [comments]  |
| Admob & Firebase and extra permissions. Posted: 23 May 2016 07:58 AM PDT Recently I Admob started asking to link with firebase, and when add ing a new ad unit the instructions tell you to use What isn't explicitly documented is that firebase adds these permissions to your app: I don't like the idea of asking for these extra permissions just to have analytics and ads. Does anybody know if there is a way of not having these extra permissions? are there more slimmed down dependencies? [link] [comments]  |
| Posted: 23 May 2016 03:01 AM PDT With google is supporting Vulkan API natively anyone know if google will redo the entire android UI with Vulkan. I heard Samsung have created a touchwiz launcher using Vulkan to help the butteriness and save battery since Vulkan is more processor efficient. If they did I'm sure they can really make the whole UI alot smoother and get rid of alot of little jitters here and there and also provide a base where all apps running atop android automatically are rendered using Vulkan. Im not sure if this is even technically possible .. [link] [comments]  |
| How can I work with images and files without immediately running out of memory? Posted: 22 May 2016 11:54 PM PDT I'm working on something that needs to make files into byte arrays, and edit bitmaps at the same time. However, whenever anything is loaded, it runs out of memory. [link] [comments]  |
| Rewarded Surveys: The Answer To An App Publisher’s Revenue Prayers? Posted: 23 May 2016 02:39 AM PDT |
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