How to Add Data with ContentResolver in a Custom Folder on Android скачать в хорошем качестве

How to Add Data with ContentResolver in a Custom Folder on Android

Learn how to effectively use ContentResolver to save images in a custom directory in your Android application, overcoming common pitfalls along the way. --- This video is based on the question https://stackoverflow.com/q/68539211/ asked by the user 'propoLis' ( https://stackoverflow.com/u/4977951/ ) and on the answer https://stackoverflow.com/a/68539338/ provided by the user 'Aasima Jamal' ( https://stackoverflow.com/u/16229705/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to add data with ContentResolver in custom folder? Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Add Data with ContentResolver in a Custom Folder on Android Developing applications for Android can sometimes throw unexpected challenges your way, especially when dealing with file storage and content providers. One common issue is needing to save data – such as images – directly into a custom folder within your app's directory, rather than the standard locations provided by the system. The Problem You may find yourself in a situation where you want to store an image in a specific directory, like MyAppImages, which you created under the Pictures folder. While it seems straightforward, you'd encounter several errors when attempting to use the ContentResolver to achieve this. The challenges may present themselves in forms like: UnsupportedOperationException when trying to insert a custom URI. IllegalArgumentException for unknown URLs when using certain path formats. These issues can be deciphered and resolved with a clear understanding of how Android's file system and ContentResolver interact with custom directories. Understanding the Solution To successfully save an image using ContentResolver to your custom folder, it’s important to follow a few strategic steps. Below, we'll outline how to effectively manage file storage within your Android app. 1. Setting Up Your Directories First, you'll want to ensure your custom directory, such as MyAppImages, exists. You can utilize the following code snippet to create the directory if it doesn't already exist. [[See Video to Reveal this Text or Code Snippet]] 2. Creating a ContentValues Object Next, you need to prepare a ContentValues object. This contains metadata about the image you're saving, including its name, type, and path: [[See Video to Reveal this Text or Code Snippet]] 3. Inserting the Image into ContentResolver To insert this data, you’ll need a URI that points to the appropriate location in the media store. For devices running Android Q (API 29) and above, the real storage path must be relative: [[See Video to Reveal this Text or Code Snippet]] 4. Writing the Image Data Once you have the URI, you can open an output stream to write the actual image data: [[See Video to Reveal this Text or Code Snippet]] 5. Closing the OutputStream Finally, don’t forget to manage resources properly. Clean up by closing your output stream and updating the media store metadata if necessary. Conclusion By following these steps, you can effectively save images using ContentResolver in a custom folder, successfully navigating through the complexities posed by different Android API levels. For anyone facing issues with saving data in a custom directory, this guide serves as a reliable reference to ensure proper implementation and understanding of the required components. Keep experimenting, and happy coding!