The platform has matured quite a bit since the initial AOSP release, and set the user expectations bar quite high. What’s not to like about this platform? It’s free, it’s customizable, it’s rapidly growing and it’s available not just on your phone or tablet, but on your smartwatch, TV and car too.With the latest Lollipop update, Android programming continues to improve. In some cases, I have gotten a screen that read Encryption failed and it shows one button 'Factory Reset'.upon clicking this button, nothing happens.I have seen on the event log some messages saying something like 'Couldnt find the partition file'.after some time it would say something about Daemon not working.I think it says it can't find Daemon.-When I click play, on the window where I have to choose a virtual device, none show.-When I launch a device from the AVD manager.it starts up the emulator but the device takes ages to load and shows the 'System UI isn't responding' error. But it doesn't show anything.even after clicking on the make a new AVD.it doesn't show anything there.How to fix Android emulator not responding after launch. Solved The system UI isnt responding in android. Education.Hello guys, I’ve been trying to run some calaba.sh tests in an Android application a couple of days ago, playing with CircleCI, learning about that and figuring out how it works.Pushing iOS design standards to them is a terrible strategy!Unless there is a super good reason for breaking the guidelines, don’t do it. But, it’s 2014 and users have been using Android for quite a while now, and they’ve grown accustomed to the platform. But still, every now and then, we see an app that is an iOS clone.Don’t get me wrong, I’m not an Android programming evangelist! I respect every platform that moves the mobile world a step forward. These bugs are easily prevented, as long as we get the basics right!Here’s an Android programming tutorial to address the 10 most common mistakes Android developers make.To my great pleasure, this Android mistake is far less common nowadays (partially because clients are beginning to realize that the days when Apple was setting all the design standards are long gone). Unfortunately, segmentation is the price to pay for openness, and there are thousands of ways your app can fail on different devices, even as an advanced Android programmer.Regardless of such huge segmentation, the majority of bugs are actually introduced because of logic errors.
Even better, try out Genymotion, it’s lightning fast and comes with a lot of different popular preset devices.Also, have you tried rotating your device? All hell can break loose… Common Mistake #3: Not Using IntentsIntents are one of Android’s key components. The Android Emulator is super good in replicating physical devices. 9-patch drawables are stretched to fit the screen.There are literally thousands of possible scenarios, but after a while you develop a sense for covering them all with a handful of cases.You don’t own thousands of devices? Not a problem. Resources are included multiple times to account for different densities and orientations. Density-independent pixels (dp) are different than normal pixels (px). It basically says that fragments and cursor loaders have good intended purpose, but poor implementation. Killing one won’t free the resources used by the others.Unless you want to dig deep into the Android core and read this article, advocating against fragment usage, you should use fragments whenever possible. They help a lot with optimizing for various screens, they are easily managed by their parent activity, can be reused, combined and positioned at will.Launching a separate activity for each app screen is terribly inefficient, since the system will try to keep them in memory as long as it can. Think of them as separate building blocks with their own (rather complex) life cycles that exist inside an Activity. Common Mistake #4: Not Using FragmentsA while ago in Honeycomb, Android introduced the concept of fragments. It will save you a lot of programming time, and strip the AndroidManifest.xml of unnecessary permissions. Is mac really better for photo editingI’ll write my own code that communicates with my server in a background thread.”No! Please don’t do that! Network calls, image loading, database access, JSON parsing, and social login are the most common things you do in your app. SD reading / writing Common Mistake #6: Reinventing the Wheel“OK, I won’t use the main thread. Stripping the user of his control over the app leads to frustration, frustrated users tend to give very negative feedback.Even worse, if the main thread is blocked for a while (5 seconds for Activities, 10 for Broadcast Receivers), ANR will happen.This was so common in Android 2.x, that on newer versions the system won’t let you make network calls in the main thread.To avoid blocking the main thread, always use worker/background threads for:5. Use common implementations for social login.If you need something implemented, chances are it’s already written, tested and used widely. Use Retrofit / Volley for network calls. Remember how Android has matured and grown as a platform? Here’s a quick list of examples: So why wait for server response before handling the successful request? It’s infinitely better to assume success and handle failure. Successful network calls are far more likely than unsuccessful ones. There is a round trip delay, there are network failures, packages get lost, and dreams get destroyed.But all this is measurable. Packages are not sent, processed and received instantly. But the user will still have to wait. We have learned that there is a better way for handling long running tasks, and we are using well documented libraries for that purpose. They also consume a lot of memory. Images, for instance, are extremely nice content, mainly due to their property of conveying a thousand words per image. Common Mistake #8: Not Understanding BitmapsUsers love content! Especially when the content is well formatted and looks nice. Apps must accommodate to the user’s psychology. Kids don’t want to sit in a classroom obtaining knowledge that has uncertain future payoff. People don’t like to wait. Android Emulator Ui Not Responding Full HD ScreenThere are alternatives, like the RGB_565 configuration that requires half the memory than ARGB_8888, but loses the transparency and the color precision (while maybe adding a green tint).Let’s assume you have a brand new device with full HD screen and 12 MP camera. That means that for each pixel we draw, we need to keep 8 bits (1 byte) for the alpha, the red, the greed and the blue channel in memory, in order to properly display it. The total memory needed for this is calculated with the following formula: memory_needed_in_bytes = 4 * image_width * image_height Why 4? Well, the most common / recommended bitmap configuration is ARGB_8888. Since bitmaps are the most common way to do this, we’re going to provide an Android programming guide for the whole process:Let’s say you want to display an image on your screen that you just took with your camera. Adobe illustrator torrent for macYou are trying to show a 4000x3000 image on a screen that has 1920x1080 pixels, in worst case scenario (displaying the image full screen) you shouldn’t allocate more than 4 * 1920 * 1080 = 8.3 MB of memory.
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