Use internal storage and remove permissions for external storage

[4brunu]

Is your feature request related to a problem? Please describe.
Currently when someone imports this library, it adds to the app the permissions for external storages.
It would be nice to not impose this to the apps and remove those permissions.

Describe the solution you'd like
This library should use internal storage and remove the external storage permissions.

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[4brunu]

I asked to remove the external storage permission, because has a library this is integrated in a lot of apps, that want to make the permissions as minimal as possible, like mine. So it woulde be nice if we could remove this permission

[afreakyelf]

Someone raised the same concern some time back, so to tackle this and while supporting the older version, I added this to keep up with the latest guidelines.

Pdf-Viewer/pdfViewer/src/main/AndroidManifest.xml

Lines 4 to 5 in a2f11aa

	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
	android:maxSdkVersion="28" />

[4brunu]

Removing the external storage permission, also has the side effect of removing some functionality of the library.

Pdf-Viewer/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfViewerActivity.kt

Line 428 in a2f11aa

requestPermissionLauncher.launch(permission.WRITE_EXTERNAL_STORAGE)

[afreakyelf]

I believe its covered based on Android versions.

Pdf-Viewer/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfViewerActivity.kt

Lines 427 to 447 in a2f11aa

	private fun requestStoragePermission() {
	requestPermissionLauncher.launch(permission.WRITE_EXTERNAL_STORAGE)
	}
	private fun checkAndStartDownload() {
	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
	// For OS versions below Android 11, use the old method
	if (ContextCompat.checkSelfPermission(
	this, permission.WRITE_EXTERNAL_STORAGE
	) == PackageManager.PERMISSION_GRANTED
	) {
	startDownload()
	} else {
	// Request the permission
	requestPermissionLauncher.launch(permission.WRITE_EXTERNAL_STORAGE)
	}
	} else {
	// For Android 13 and above, use scoped storage or MediaStore APIs
	startDownload()
	}
	}