A RayWenderlich Android Project for practicing Intent with Kotlin

• informs Android taht it needs an app to handle the intent's actoin when it starts. - The Android system then compares the given intent against all apps installed on the device to see which ones can handle that action,
• process the intent (if more than one can handle the intent, the user is prompt to choose one)

It's used to retrieve image data captured from camera.

Compared to implicit intents, explicit intents are a lot more conservative.

• describes a specific component that will be created and used
• typically used for transferring 'explicit' data to another activity

• For Uri, uses intent.getParcelable<Uri>(TAG)
• For Int, uses intent.getIntExtra(TAG, defaultValue)

val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
mediaScanIntent.data = Uri.fromFile(imageFile)
sendBroadcast(mediaScanIntent)

• uses ACTION_MEDIA_SCANNER_SCAN_FILE action to attach data (in a form of a Uri) to save image files to your local Android file system

• Add intent-filter tag into your AndroidManifest.xml for Android to be able to do different ACTION outside of App.
• For instance, this app uses ACTION_SEND action to get images directly from Photo/Gallery app