Manage device awake state. Save to shared storage. Save data in a local database. Sharing simple data. Sharing files. Sharing files with NFC.

Printing files. Content providers. Autofill framework. Contacts provider. Data backup. Remember and authenticate users. User location. Using touch gestures. Handling keyboard input.

Supporting game controllers. Input method editors. Performing network operations. Transmit network data using Volley. Perform network operations using Cronet.

Transferring data without draining the battery. Reduce network battery drain. Transfer data using Sync Adapters. Bluetooth Low Energy. Wi-Fi infrastructure.

Discover and connect. Runtime API reference. Web-based content. Android App Bundles. Google Play. Play Asset Delivery. Play Feature Delivery. In-app reviews.

In-app updates. Google Play Instant. Get started with instant apps. Get started with instant games. Integrate with Firebase. Play Install Referrer. Play Install Referrer Library. Application Licensing. Android GPU Inspector. Getting 'Loadng error. Access denied! This folder was the only I path had to retrieve my downloaded podcasts. I was last able to access that folder to retrieve my downloads on Dec 16 The latest Android 11 update was this morning Dec 28 Been having this problem since.

Carlos reinstall again and use the rebuilt. I had the same problem too. I changed the colors of my text messages but now when i open my Messages it times out or quits.

What do i do? I experienced very uncomfortable situation. Thank you all very much for any advice and help. I downloaded Hearthstone, according to these steps on my two days old Samsung. Just something pretty cool with dual core and so on.

Everything went smoothly. I played several games of Hearthstone and then unexpectedly, blue screen occurred, when I was only trying to do something in my settings. I restarted the phone, and system was launched again. No blue screen, just nothing. It is totally dead until now. I do not blame this app. It happened to me once more before with the new phone. But if somebody has the same problem, please tell me. Actually to have Hearthstone on a phone is quite practical and I decided to install it again on a repaired or new machine.

Tried and worked on Xperia Z3 compact 4. Besides the very small UI blizzard did intend this version to be meant for tablets only , slight sluggishness and very short screen off timer, it works! Hi, tried to install on my galaxy s4, i followed thru the instruction, after clicking install on the rebuild.

Hi so I'm able to go throughall of the steps except the final step, when I go tto installed the rebuilt. Is there a part to this I am missing or something? Guys, please help me. Please help me! Whenever I try to launch the game the loading screen appears and it starts "Unpacking Crates". Seems to load fine for a while but eventually my phone locks up and I have to take the battery out to reset it. This is on a Galaxy S3. Edit: After multiple instances of resetting my phone I've finally unpacked all the crates.

But now its sitting at the Hearthstone saloon door endlessly. I can't finish the installation. When I try to press the "Install" button, it doesn't work there are two buttons: Cancel and Install, but only Cancel is possible to be selected. I am having the same issue as Akemi. I quadruple checked my security settings, Unknown Apps is selected.

My phone will only allow me to select "cancel" and not "install". Any thoughts? I figured it out. If you have any screen filter apps downloaded, you need to disable them. Such as, f. Hellow, it worked for me after having the "Cannot contact google blabla.. Through any file explorer, unzip i did this on my pc, didnt find any unzip app on android Now, find the rebuilt. It's telling me I need to update the app, it then directs me to the play store. Can't even log in.

Figured it out!! Change your server location, it gives the option to do it at the log in screen. I changed to Asia works like a charm. No us server availability as far as I'm aware. Spread the word if you can. There are two buttons: Cancel and Install, but I can only hit Cancel. Galaxy s5 lollipop 5 doesnt work at all. So with the most recent patch this method no longer works.

I own a galaxy s5 and it was working flawless until earlier tonight when blizzard released it's patch. It seems like we need the updated obb fIles to reinstall. Are there any plans to release those? New OBB files are up. You'll need to remove all Hearthstone files from your device though and start new.

That's the only way this will work, so just follow the steps in the updated article. I have also the same problem with this new patch that seems blizzard released today. Blocked permissions If a user denies an app permission multiple times, the app will be blocked from requesting the permission again. Soft restart Get Google Play system updates when your phone is idle, with no full reboot required. Background location Get more control over Location Sharing with apps that are not in use. App suggestions Pixel devices 1 now make app suggestions based on your daily routines.

These apps appear on the bottom row of your home screen. So you can get the apps that you need when you need them. Smart folders See intelligent suggestions for folder names on your Pixel device 1. Schedule dark mode Schedule when you want your phone to turn to dark mode. And when you want it to go back to a standard display.

Picture-in-picture Picture-in-picture windows can be adjusted to fit the size that you need. So you get better performance. Hinge angle sensor support So apps can better support all kinds of foldable configurations. Gesture sensitivity When using gesture nav, you can now fine-tune both 'Back' gestures on the left and right edge independently of one another.

Android 11 highlights Android 11 highlights Conversations. Manage your conversations. Get all your messages in one place. Bubbles Chat while multitasking. Capture and share content. Helpful tools that predict what you want. Smart Reply.

Smart Reply Get suggested responses in conversations. App suggestions Easily get to apps that you need the most.

Smart folders Smarter ways to organise your apps. Learn more. Device controls Control your connected devices from one place. Media controls Bring your entertainment with you. Connect Android to your car. Skip the cable. If you know that only a small percentage of your users have devices with specific densities, consider whether you need to bundle those densities into your app. If you don't include resources for a specific screen density, Android automatically scales existing resources originally designed for other screen densities.

We recommend that every app include at least an xxhdpi image variant. For more information screen densities, see Screen Sizes and Densities. Some images don't require a static image resource; the framework can dynamically draw the image at runtime instead. In addition, XML Drawable objects produce monochromatic images compliant with material design guidelines. You can include a separate resource for variations of an image, such as tinted, shaded, or rotated versions of the same image.

We recommend, however, that you reuse the same set of resources, customizing them as needed at runtime. Android provides several utilities to change the color of an asset, either using the android:tint and tintMode attributes on Android 5. For lower versions of the platform, use the ColorFilter class. You can also omit resources that are only a rotated equivalent of another resource.

The following code snippet provides an example of turning a "thumb up" into a "thumb down" by pivoting at the middle of the image and rotating it degrees:. You can also reduce your APK size by procedurally rendering your images.

Procedural rendering frees up space because you no longer store an image file in your APK. For example, the aapt tool can convert a true-color PNG that does not require more than colors to an 8-bit PNG with a color palette.

Doing so results in an image of equal quality but a smaller memory footprint. Keep in mind that the aapt has the following limitations:. You can reduce PNG file sizes without losing image quality using tools like pngcrush , pngquant , or zopflipng. All of these tools can reduce PNG file size while preserving the perceptive image quality.

The pngcrush tool is particularly effective: This tool iterates over PNG filters and zlib Deflate parameters, using each combination of filters and parameters to compress the image. It then chooses the configuration that yields the smallest compressed output. You can use vector graphics to create resolution-independent icons and other scalable media. Using these graphics can greatly reduce your APK footprint. Vector images are represented in Android as VectorDrawable objects.

With a VectorDrawable object, a byte file can generate a sharp image the size of the screen. However, it takes a significant amount of time for the system to render each VectorDrawable object, and larger images take even longer to appear on the screen.

Therefore, consider using these vector graphics only when displaying small images. For more information on working with VectorDrawable objects, see Working with Drawables. Do not use AnimationDrawable to create frame-by-frame animations because doing so requires that you include a separate bitmap file for each frame of the animation, which drastically increase the size of your APK. Instead, you should use AnimatedVectorDrawableCompat to create animated vector drawables.

Reduce native and Java code There are several methods you can use to reduce the size of the Java and native codebase in your app. Make sure to understand the footprint of any code which is automatically generated.

For example, many protocol buffer tools generate an excessive number of methods and classes, which can double or triple the size of your app. A single enum can add about 1. These additions can quickly accumulate for complex systems or shared libraries.

If possible, consider using the IntDef annotation and code shrinking to strip enumerations out and convert them to integers. This type conversion preserves all of the type safety benefits of enums. If your app uses native code and the Android NDK, you can also reduce the size of the release version of your app by optimizing your code. Two useful techniques are removing debug symbols and not extracting native libraries.

Using debug symbols makes sense if your application is in development and still requires debugging. Use the arm-eabi-strip tool, provided in the Android NDK, to remove unnecessary debug symbols from native libraries.

After that, you can compile your release build. When building the release version of your app, package uncompressed. Disabling this flag prevents PackageManager from copying. When building your app using Android Gradle plugin 3. Your APK might contain content that users download but never use, like additional language or per-screen-density resources.

To ensure a minimal download for your users, you should upload your app to Google Play using Android App Bundles. If you're not publishing your app to Google Play, you can segment your app into several APKs, differentiated by factors such as screen size or GPU texture support. When a user downloads your app, their device receives the correct APK based on the device's features and settings.

This way, devices don't receive assets for features that the devices don't have. Content and code samples on this page are subject to the licenses described in the Content License.

App Basics. Build your first app. App resources. Resource types.