The second Android 11 Developer Preview is now available, test it out and share your feedback.

Once you install Android Studio, it's easy to keep the Android Studio IDEand Android SDK tools up to date with automatic updatesand the Android SDK Manager.

Update your IDE and change channels

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Android Studio notifies you with a small bubble dialog when anupdate is available for the IDE, but you can manuallycheck for updates byclicking Help > Check for Update (on Mac, AndroidStudio > Check for Updates).

Updates for Android Studio are available from the followingrelease channels:

  • Canary channel: These are bleeding-edgereleases, updated roughly weekly, and available for download atdeveloper.android.com/studio/preview.

    In addition to receiving canary versions of Android Studio, you will also receive previewversions of other SDK tools, including the Android Emulator.

    Although these builds are subject to morebugs, they do get tested and we want to offer them so you can try newfeatures and provide feedback. This channel is not recommended forproduction development.

  • Dev channel: These are hand-picked canary builds thatsurvived a full round of internal testing.
  • Beta channel: These are release candidates based on stablecanary builds, released to get feedback before going into thestable channel.
  • Stable channel: The official stable release that isavailable for download atdeveloper.android.com/studio.

If you'd like to try one of the preview channels (Canary, Dev, or Beta)while still using the Stable build for your production Android projects, youcan install both side by side.

To change the update channel for an existing install, proceed as follows:

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  1. Open the Preferences window by clickingFile > Settings (on Mac, Android Studio >Preferences).
  2. In the left panel, click Appearance & Behavior >System Settings > Updates.
  3. Be sure that Automatically check for updates is checked, then select a channel from the drop-down list (see figure 1).
  4. Click Apply or OK.

Figure 1. The Android Studio Updatespreferences.

Delete unused Android Studio directories

When you run a major version of Android Studio for the first time, it looks for directories containing caches, settings, indices, and logs for versions of Android Studio for which a corresponding installation can’t be found. The Delete Unused Android Studio Directories dialog then displays locations, sizes, and last-modified times of these unused directories and provides an option to delete them.

The directories Android Studio considers for deletion are listed below:

  • Linux: ~/.AndroidStudio[Preview]_version_
  • Mac: ~/Library/{Preferences, Caches, Logs, Application Support}/AndroidStudio[Preview]_version_
  • Windows: %USER%.AndroidStudio[Preview]_version_

Update your tools with the SDK Manager

The Android SDK Manager helps you download the SDK tools, platforms, andother components you need to develop your apps. Once downloaded, you can findeach package in the directory indicated as the Android SDK Location,shown in figure 2.

To open the SDK Manager from Android Studio, click Tools >SDK Manager or click SDK Managerin the toolbar. If you're not using Android Studio, you can download toolsusing the sdkmanager command-line tool.

When an update is available for a package you already have, a dash appears in the check box next to the package.

  • To update an item or install a new one, click the check boxso it shows a checkmark.
  • To uninstall a package, click to clear the check box.

Pending updates are indicated in the left column with a download icon. Pending removals areindicated with a red cross .

To update the selected packages,click Apply or OK, then agree to anylicense agreements.

Figure 2. The Android SDK Manager.

Recommended packages

You should give special consideration to the following toolsin the SDK Tools tab:

Android SDK Build-Tools
Required. Includes tools to build Android apps. See the SDK Build Tools release notes.
Android SDK Platform-Tools
Required. Includes various tools required by theAndroid platform, including the adb tool.
Android SDK Tools
Required. Includes essential tools such as ProGuard. See the SDK Tools Release Notes.
Android Emulator
Recommended. A QEMU-based device-emulation tool that you can use to debug and test your applications in an actual Android runtime environment. See the Android Emulator release notes.

Note: Most API libraries that were previously provided by theSupport Repository packages (such as the Android Support Library, Constraint Layout,Google Play services, and Firebase) are now instead available from Google's Maven repository.Projects created with Android Studio 3.0 and higher automatically include this repository in thebuild configuration. If you're using an older project, you must manually add Google's Maven repository to yourbuild.gradle file.

In the SDK Platforms tab, you must also install at least oneversion of the Android platform. Each version provides several differentpackages. To download only those that are required, click the check box nextto the version name.

To see all available packages for each Android platform, clickShow Package Details at the bottom of the window.Within each platform version, you'll find the following packages:

Android SDK Platform
Required.At least one platform is required inyour environment so you're able to compile your application. In order toprovide the best user experience on the latest devices, use the latest platformversion as your build target. You'll still be able to run your app on olderversions, but you must build against the latest version in order to use newfeatures when running on devices with the latest version of Android.
Intel or ARM System Images
Recommended. The system image is required in order to run the Android Emulator. Each platform versioncontains the supported system images. You can also download system images laterwhen creating Android Virtual Devices (AVDs) in the AVD Manager. Select either Intelor ARM based on your development computer's processor. Library

Note: If you plan to use APIs fromGoogle Playservices (including Firebase), you must use either the Google APIs system imageor the Google Play system image (the latter includes the Play Store app).

The above list is not comprehensive and you can add other sites to download additional packagesfrom third parties.

In some cases, an SDK package may require a specific minimum revision ofanother tool. If so, the SDK Manager notifies you with a warning and addsthe dependencies to your list of downloads.

Tip: You can also customize thebuild.gradle file so each project uses a specific build chain andcompilation options. For more information see, Configuring Gradle Builds.

Edit or add SDK tool sites

To manage which SDK sites Android Studio checks forAndroid tools and third party tool updates, click the SDK Update Sitestab. You can add other sites thathost their own tools, then download the packages from thosesites.

For example, a mobile carrier or device manufacturer might offer additionalAPI libraries that are supported by their own Android-powered devices. Todevelop using their libraries, you can install their Android SDK packageby adding their SDK tools URL to the SDK Manager in theSDK Update Sites.

If a carrier or device manufacturer has hosted an SDK add-on repository fileon their website, follow these steps to add their site to the Android SDKManager:

  1. Click the SDK Update Sites tab.
  2. Click Add at the bottom of the window.
  3. Enter the name and URL of the third party site, then click OK.
  4. Make sure the checkbox is selected in the Enabledcolumn.
  5. Click Apply or OK .

Any SDK packages available from the site now appearin the SDK Platforms or SDK Tools tabs,as appropriate.

Auto-download missing packages with Gradle

When you run a build from the command line, or when using Android Studio 3.3 or later, Gradle can automatically download missing SDK packages that a project depends on, as long as the corresponding SDK license agreements have already been accepted using the SDK Manager.

When you accept the license agreements using the SDK Manager, Android Studio creates a licenses directory inside the SDK home directory. This licenses directory is necessary for Gradle to auto-download missing packages.

Note: Accepting the license agreements using the android command line tool does not create this licenses directory. You must first accept the agreements using the SDK Manager to be able to use this feature.

If you have accepted the license agreements on one workstation, but wish to build your projects on a different one, you can export your licenses by copying over the accepted licenses directory. To copy the licenses to another machine, follow these steps:

  1. On a machine with Android Studio installed, click Tools > Android > SDK Manager. At the top of the window, note the Android SDK Location.
  2. Navigate to that directory and locate the licenses/ directory inside it. (If you do not see a licenses/ directory, return to Android Studio and update your SDK tools, making sure to accept the license agreements. When you return to the Android SDK home directory, you should now see the directory.)
  3. Copy the entire licenses/ directory and paste it into the Android SDK home directory on the machine where you wish to build your projects.

Gradle will now be able to automatically download missing packages your project depends on.

Note that this feature is automatically disabled for builds you run from Android Studio, as the SDK manager handles downloading missing packages for the IDE. You can also manually disable this feature by setting android.builder.sdkDownload=false in the gradle.properties file for your project.

Summary

Download EaseUS iPhoto recovery software and apply provided methods here to recover deleted iPhoto Library with photos on Mac. If the attempt to restore iPhoto Library from time machine failed, don't worry and EaseUS Data Recovery Wizard for Mac is ready to help.

How can I recover accidentally deleted iPhoto Library on Mac?

'How can I recover deleted iPhoto Library on Mac? I need some suggestion or guidance. I feel so stupid because I accidentally erased my iPhoto Library to Trash and had emptied the trash securely a few days ago..

My friends told me that I can restore the deleted iPhoto Library from Time Machine. But I completely don't understand how to use this app on my Mac. Can anyone help me retrieve my lost pictures from the deleted iPhoto Library that I had empty securely from the trash plus guidance to activate Time Machine? I need those photos back.'

According to Apple's support community, when a user deleted iPhoto Library, there's still a chance to restore lost photos and even the app itself. Read on and follow the provided solutions you'll see how to effectively restore lost photos after accidentally deleting iPhoto Library. (Methods below also can be applied to restore deleted photos and Photos Library on the latest Mac computers to restore with installed new macOS.)

Workable SolutionsStep-by-step Troubleshooting
Fix 1. Recover deleted iPhoto LibraryMethod 1. Recover without Time Machine..Full steps
Method 2. Recover from Time Machine..Full steps
Fix 2. Rebuild iPhoto Library on MacPress and hold Command and Option keys and click on the iPhoto icon, When a dialog appears..Full steps

Part 1. Recover deleted iPhoto Library on Mac

It's easy to understand that your data always matters more than your apps and hardware. So your first step after deleting iPhoto Library on Mac should be restoring lost photos. And the best way is not to restore from the Trash.

Mostly, according to Apple's support community, when you delete the iPhoto Library from Mac, the chance to restore photos from the Trash is very small. Here are two methods that you can follow and restore deleted iPhoto Library with photos on Mac.

Method 1. Recover deleted iPhoto Library photos on Mac without Time Machine

If Time Machine was not running and you emptied the trash securely after deleting the iPhoto Library, it is impossible for you to perform Mac deleted recovery from Time Machine. If you can't recover deleted iPhoto Library on Mac from TM, you can try EaseUS Data Recovery Wizard for Mac for help.

EaseUS Mac data recovery software allows users to recover multiple types of files including the deleted iPhoto Library with simple clicks. It can offer you the most robust recovery capacity in all data loss cases. Now you can free download the trial version and evaluate what it can recover.

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Keep Noted:

  1. 1. This software is a trial version that you can use to scan and preview all lost photos without payment. You can pay to restore the lost photos after making sure this software indeed work.
  2. 2. To avoid unexpected data loss, you should immediately start using Time Machine and backing up useful files after following the below photo recovery process.

Step 1. Select the location where your valuable photos were lost and click Scan button.

Step 2. EaseUS Data Recovery Wizard for Mac will start immediately a quick scan as well as a deep scan on your selected disk volume. Meanwhile, the scanning results will be presented in the left pane.

Step 3. By Path and Type, you can quickly filter the photos you've lost earlier. Select the target files and click Recover Now button to get them back at once.

After the restoring, you've restored the deleted iPhoto Library. One more thing that you should do to view your restored photos, which is to import the restored iPhoto Library into iPhoto Library folder on Mac:

Launch iPhoto > 'File' > 'Switch to Library' > Select the restored iPhoto Library > Click 'OK'.

There, you can view and reuse your photos again.

Method 2. Recover deleted iPhoto Library photos on Mac from Time Machine

As many users know, Time Machine is a backup program. With it running on Mac if you deleted iPhoto Library, this application will create a backup of the deleted pictures. You can launch Time Machine application and go back to the time before you delete the iPhoto Library, then restore the deleted iPhoto Library with photos:

(This also works to restore lost Photo Library.)

That may not be true each and every time, but most of the time. Change photos library mac.

Step 1. Connect your Time Machine drive to Mac and run Time Machine from System Preference.

Step 2. Scroll the timeline on the right side, click the desired backup (the date of your last backup).

Step 3. Navigate to the backup of your iPhoto library (by default, your iPhoto Library locates in 'Home/Pictures/iPhoto Library' folder), click to select it and click 'Restore' to retrieve your data.

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The time of restoring iPhoto Library depends on its size.

Part 2. Rebuild iPhoto Library on Mac

When the photo recovery process completes, but you find the restored photos don't show up in iPhoto or iPhoto doesn't respond nor work on Mac, don't worry. All you need is to rebuild the iPhoto Library.

The other practical trick that you can try is to rebuild iPhoto Library on Mac computer. Here are the detailed steps:

Warning
The rebuilding iPhoto Library process may result in data loss. Make sure that you've restored all lost photos with the methods provided in Part 1 and saved your data to an external storage device.

Steps to rebuild iPhoto Library:

Step 1. Press and hold Command and Option keys and click on the iPhoto icon. System/library/frameworks mac.

Step 2. When a dialog appears with rebuild options, check the options of rebuild iPhoto Library and click 'Rebuild' to confirm.

Steps to repair Photo Library:

On new Mac computers with the latest macOS such as Catalina, Mojave, you can repair Photos Library and make Photos application work on Mac again

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Conclusion

The Mac data recovery software - EaseUS Data Recovery Wizard for Mac to restore lost photos after accidentally deleted iPhoto Library is easy and effective for every level of Mac users to apply and try. When you don't have Time Machine backups of lost data, you can also apply it to restore data on Mac without Time Machine.

The two methods provided for restoring deleted iPhoto Library will effectively restore your lost iPhoto Library. If you have further file recovery issues on Mac computers, follow our Mac file recovery resource page for further help.