Android saving file to external storage Ask Question. Asked 10 years, 1 month ago. Active 10 months ago. Viewed k times. Improve this question. Android-Droid Android-Droid Add a comment. Active Oldest Votes. JPEG, 90, out ; out. Improve this answer. You should still be using Environment. It is not appropriate to use Intent. The correct intent to broadcast is new Intent Intent. Show 4 more comments. Yar Yar 4, 2 2 gold badges 33 33 silver badges 40 40 bronze badges.
I am getting uri null? There you will find your downloaded files in chronological order newest to oldest, in most cases. You can, however, change how the files are sorted. In Samsung's My Files app, tap on the three-dot menu icon and then select "Sort by. Once you've located your downloaded files, you can open a file with a tap, or bring up more options with a long-press on the file. If you don't like the default file manager app on your Android phone, or it doesn't have one, download the Files by Google app formerly Files Go from the Play Store.
The app is easy to navigate, provides quick access to your downloads folder and helps you free up storage space. To give users more control over their files and to limit file clutter, apps that target Android 10 API level 29 and higher are given scoped access into external storage, or scoped storage , by default. When scoped storage is enabled, apps cannot access the app-specific directories that belong to other apps.
Because external storage resides on a physical volume that the user might be able to remove, verify that the volume is accessible before trying to read app-specific data from, or write app-specific data to, external storage.
You can query the volume's state by calling Environment. On devices without removable external storage, use the following command to enable a virtual volume for testing your external storage availability logic:. Sometimes, a device that allocates a partition of its internal memory as external storage also provides an SD card slot.
This means that the device has multiple physical volumes that could contain external storage, so you need to select which one to use for your app-specific storage.
To access the different locations, call ContextCompat. As shown in the code snippet, the first element in the returned array is considered the primary external storage volume.
Use this volume unless it's full or unavailable. To access app-specific files from external storage, call getExternalFilesDir. The following code snippet demonstrates how to call getExternalFilesDir :. To add an app-specific file to the cache within external storage, get a reference to the externalCacheDir :.
To remove a file from the external cache directory, use the delete method on a File object that represents the file:. If your app works with media files that provide value to the user only within your app, it's best to store them in app-specific directories within external storage, as demonstrated in the following code snippet:. These directory names ensure that the files are treated properly by the system. If none of the pre-defined sub-directory names suit your files, you can instead pass null into getExternalFilesDir.
This returns the root app-specific directory within external storage. Many users don't have much storage space available on their devices, so your app should consume space thoughtfully. If you know ahead of time how much data you're storing, you can find out how much space the device can provide your app by calling getAllocatableBytes.
The return value of getAllocatableBytes might be larger than the current amount of free space on the device. This is because the system has identified files that it can remove from other apps' cache directories. If there's enough space to save your app's data, call allocateBytes. Otherwise, your app can request the user to remove some files from the device or remove all cache files from the device.
Your app can declare and create a custom activity that, when launched, allows the user to manage the data that your app has stored on the user's device. You declare this custom "manage space" activity using the android:manageSpaceActivity attribute in the manifest file.
File manager apps can invoke this activity even when your app doesn't export the activity; that is, when your activity sets android:exported to false. This intent displays a prompt to the user. If desired, this prompt can show the amount of free space available on the device. To show this user-friendly information, use the result of the following calculation:. Alternatively, you can request that the user clear the cache files from all apps on the device. For more information about saving files to the device's storage, consult the following resources.
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. 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. Android 11 API level 30 further enhances the platform, giving better protection to app and user data on external storage.
This release introduces several enhancements, such as raw file path access, batch edit operations for media, and an updated UI for the Storage Access Framework. The release also offers improvements to scoped storage , which makes it easier for developers to fulfill their storage use cases after they migrate to using this storage model.
This flag allows apps to temporarily opt out of the changes associated with scoped storage, such as granting access to different directories and different types of media files. After you update your app to target Android 11, the system ignores the requestLegacyExternalStorage flag. If your app opts out of scoped storage when running on Android 10 devices, it's recommended that you continue to set requestLegacyExternalStorage to true in your app's manifest file. That way, your app can continue to behave as expected on devices that run Android If your app uses the legacy storage model and previously targeted Android 10 or lower, you might be storing data in a directory that your app cannot access when the scoped storage model is enabled.
Before you target Android 11, migrate data to a directory that's compatible with scoped storage. To enable scoped storage in your app, regardless of your app's target SDK version and manifest flag values, enable the following app compatibility flags:. To disable scoped storage and use the legacy storage model instead, unset both flags. Starting in Android 11, apps that use the scoped storage model can access only their own app-specific cache files.
If your app needs to manage device storage, follow the instructions on how to query free space. If there isn't enough free space on the device, prompt the user to give your app consent to clear all caches.
Starting in Android 11, apps cannot create their own app-specific directory on external storage. To access the directory that the system provides for your app, call getExternalFilesDirs.
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