Build your first app. App resources. Resource types. App manifest file. Device compatibility. Multiple APK support. Tablets, large screens, and foldables. Build responsive UIs. Build for foldables. Getting started. Handling data. User input. Watch Face Studio. Health services. Creating watch faces. Android TV. Build TV Apps. Build TV playback apps. Help users find content on TV. Recommend TV content. Watch Next. Build TV games. Build TV input services.
TV Accessibility. Android for Cars. Build media apps for cars. Build navigation, parking, and charging apps for cars. Android Things. Supported hardware. Advanced setup. Build apps. Create a Things app. Communicate with wireless devices. Configure devices.
Interact with peripherals. Build user-space drivers. Manage devices. Create a build. Push an update. Chrome OS devices. App architecture. Architecture Components. UI layer libraries. View binding. Data binding library. Lifecycle-aware components. Paging Library. Paging 2. Data layer libraries. How-To Guides. Advanced Concepts. Threading in WorkManager. App entry points. There is an EditText field to enter the number of cups you want to limit consumption to.
There is also a button to add cups of coffee that have been consumed. To show how much of the limit has been consumed, there is a coffee cup that fills up as more cups are consumed, reaching full when the limit is reached.
Start by downloading the starter project. Then open the project in Android Studio 3. Once it finishes loading and building, you will be able to run the application on a device or emulator.
Try setting a new limit, and adding cups of coffee to see how the app works. The two main files you will be working with for this tutorial are MainActivity.
Now that you have the app up and running, and have a basic understanding of how it works, you can look for accessibility shortcomings, and make changes to fix them.
There are many tools that people use to interact with their Android devices. Magnification allows you to zoom in on parts of the screen. Both TalkBack and Magnification are helpful for people with limited visibility. People with limited mobility can use Switch Access to allow them to navigate without using the touch screen.
This tutorial is going to look mainly at TalkBack, as it incorporates both screen traversal for navigation and screen reading to understand what is in focus. You can enable all the accessibility tools the same way as you will turn on TalkBack in this tutorial. By using TalkBack, a user can use gestures, such as swiping left to right, on the screen to traverse the items shown on the screen.
As each item is in focus, there is an audible description given. This is useful for people with vision impairments that cannot see the screen well enough to understand what is there, or select what they need to. Note: TalkBack is only available on physical devices running Lollipop or higher, and cannot be accessed on an emulator. To turn on TalkBack, go to Settings on your Android device.
With the default settings, in a left to right language, swipe right to advance to the next item on the screen, left to go to the previous, and double tap to select. In a right to left language, the swipe directions are reversed. With these gestures you can start exploring the application using TalkBack.
By trying these out you are able to spot things that are hard to access or understand by those that are impaired. While using TalkBack and other accessibility tools is helpful for finding accessibility shortcomings, there are a couple other testing tools provided for developers to help identify accessibility issues.
The simplest of these is the linter that Google provides. For more in depth checks, you can turn on checks in your Espresso tests.
Do this by adding the following line to your test or test runner. Verdict: Instasize is a professional Android photo editing app that offers various filters, effects, layers, text adding feature, and the possibility to personalize your photos. Using professional tools such as Contrast, Grain, and Saturation, you can adjust sharpness, brightness, exposure, contrast, and more in your images.
You can also use unique filters to make your pictures naturally beautiful. To protect your creations, take advanteg of free watermakr software. With Instasize, you no longer need to crop your standard or panoramic photos to upload them to Instagram. This app will replace your Instagram photo editor by automatically adding a frame or patterns to your photo. You can choose the suitable one yourself — Glitter, Marble, Holidays and others.
Thanks to the large number of layouts, you can create original collages and add text, frames and effects to them. Thought it can't compete with top-tier photo animation software , it is the best picture editing app for Android if you want to turn your RAW photos into ready-made social media posts. Verdict: Pixlr Mobile is the best photo editing software for beginners optimized for phones, tablets, and other portable devices.
It is possible to use options for quick picture enhancement and for deeper image editing. For professional image processing, you can select a single color with the Color Splash tool or add a blur effect with the Focal Blur tool.
It is possible to find a cool filter or overlay among a huge variety of available ones instead of using the best filter apps. Pixlr is an awesome app for editing photos on the smartphones and animation tablets , but it is still not ideal. Its interface is thought out, editorial functions have been successfully arranged.
Based on the foregoing, Pixlr can surely be added to the list of the best photo editing apps for Android. Verdict: It is one of the best free photo editing apps for Android. It stands out with impressive functionality and is absolutely free.
Snapseed is suitable for uncomplicated processing of selfie or everyday photos taken in a hurry. Moreover, you can use it for serious image editing right on the screen of a tablet or smartphone. There are lots of easy-to-use tools that allow cropping, rotating, increasing sharpness, and more.
In , Google released RecyclerView. It is much like the ListView class, the purpose of the RecyclerView is to allow information to be presented to the user in the form of a scrollable list. The RecyclerView, however, provides a number of advantages over the ListView. The RecyclerView and CardView work together to provide scrollable lists of information to the user in which the information is presented in the form of individual cards. Android applications have always contained a toolbar at the top of the screen.
Formerly it was called the action bar. It was used to provide a title and top level menu. Android 5. The app bar allows us to set its color, place it anywhere on the screen, and include a wider range of content than its predecessor.
Widget Button Represents a push-button widget that registers when the screen is touched within its bounds. CheckBox A special type of button with a check mark graphic and description text that has two states: checked or unchecked. RadioButton The RadioButton has two states: either checked or unchecked.
Spinner A drop-down menu is called spinner. ProgressBar ProgressBar Horizontal The ProgressBar provides visual feedback about some ongoing tasks, such as when you are performing a task in the background.
QuickContactBadge This view allows you to easily display a contact that can handle various actions when tapped such as email, text, call, and so on. RatingBar The RatingBar show ratings or getting a rating from a user.
Switch The Switch has two possible states that can be read and responded to. Space This is a very simple class, the sole purpose of which is to create gaps within layouts. Text Contains predefined text views for different types of text inputs such as label TextView , password, date, time, number, and e-mail. TextView The TextView is used to display text to the users and this text information can't be edited by the users.
Password Shows the standard text keyboard and masks the the text that is entered for privacy. Password Numeric Shows a numeric keyboard and masks the the text that is entered for privacy. E-mail Shows the standard text keyboard with the addition of the character. Phone Shows the phone-style keyboard. Postal Address Shows the standard text keyboard. Multiline Text Shows the standard text keyboard with the addition of the Enter key for adding new line.
Time Shows the numeric keyboard with the addition of the : character. Number Shows the basic numeric keyboard. Number Signed Shows the basic numeric keyboard. Number Decimal Shows the basic numeric keyboard. FrameLayout The FrameLayout layout is a placeholder on screen that you can use to display a single view.
RelativeLayout The RelativeLayout layout enables you to specify how child views are positioned relative to each other. TableRow The purpose of the TableLayout container view is to allow user interface elements to be organized on the screen in a table format consisting of rows and columns.
Containers RadioGroup Multiple radio buttons can be grouped together into a RadioGroup, which allows only one radio button of the group to be selected at a time. GridView The GridView shows items in a two-dimensional scrolling grid. ScrollView A ScrollView is a special type of FrameLayout in that it enables users to scroll through a list of views that occupy more space than the physical display. WebView The WebView enables you to embed a web browser in your activity. I agree with Jin, the answer is correct, but a bit more info is intersting.
Here is what I found: Offline work : If you check this option, Gradle will use things from the cache itself for dependency resolution. In case the files are not there in the cache, then it will result in a build error.
So by enabling it, gradle will avoid to check online resources, which may make Studio faster, however I still think it is too slow for the rest of the process other than building. Add a comment.
I detected another reason - Thumbs. This helps. Can you elaborate why? I suppose that AS generates a lot of files, while Windows generates thumbnails for them on the fly. Cant find file types under the Editor any more.. Show 1 more comment. Won' start now. Where are these settings stored? If Android Studio has a proxy server setting and can't reach the server then it takes a long time to build and waiting for a timeout.
Removing it helps much. Another Useful quote from article : Modules are expensive… On my current project I had to build some libraries from scratch and had to fork some that almost fitted my needs but not quite! Don't close emulator after using once use same emulator for running app each time; If you test large apps, better to use a real mobile phone instead of emulator. Todua T. An anti-virus is causing the slow-down In one particular system I looked at, this issue was caused by an over-zealous anti-virus that was interfering with Gradle, the build manager for Android Studio.
Click on the Processes tab to see the active processes and sort by CPU. If you see an anti-virus taking significant amounts of CPU percentage intermittently while Android Studio appears to be loading, it is likely to be the same issue. You can verify further by looking at the scan logs of the anti-virus to see if it is indeed, examining the. Community Bot 1 1 1 silver badge. David Rawson David Rawson I Also added android studio installation folder, java folder, my project folder, and some. Reza Nasirloo.
This also solves a problem with the emulator I have been suffering: stackoverflow. Starting from Android Studio 3. Nominalista Nominalista 4, 7 7 gold badges 33 33 silver badges 85 85 bronze badges. Durgesh Kumar Durgesh Kumar 9 9 silver badges 16 16 bronze badges. An SSD isn't cheap. But that's an ok solution. No, it is ridiculous. Never leave the stable channel. John John 6, 6 6 gold badges 43 43 silver badges 77 77 bronze badges.
Did you ever find a solution? I've just done that and finally I'm able to work again LairdPleng - That link you provided didn't work, but that solution to set sun. In any case disabling d3d fixed everything. Don't know how I managed to mess that up! Try Power Saving Mode, turns off all lint — Odaym. But, I learned a lot in the process, to wit : idea. This will be reported in idea. If threads are being dumped, the dumps will tell what code AS was executing when the problem occurred; Find out whether the problem occurs in other projects.
If not : Look for unusual content in the project file you are editing when it happens atypical indentation, long lines, overall size, special characters, etc. I try not to edit this file with AS: package com. The following describes more details pertaining to using a "Process" exclusion in Windows Defender as opposed to adding a simple "File" or "Folder" exclusion : A file name with full path causes the particular binary file to be excluded, i.
Windows File Indexing Windows file indexing seems to also slow down Gradle builds. Would the downvoter please explain what he doesn't like about this because I just spent a day fine-tuning a brand new Windows machine to build as fast as my 5 year-old macbook. This was the only thing that got me close to within 10 seconds of my macbook's build speed.
Maybe downvote was because it's not really obvious how to add exceptions even to Windows Defender and even more complicated about indexer. TheGodfather I guess Step 5 : Close or Restart Android Studio. Mahendran Candy Mahendran Candy 14 14 silver badges 17 17 bronze badges.
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