public void ShowCamera(View view)
{
Log.Info(TAG, "Show camera button pressed. Checking permission.");
// Check if the Camera permission is already available.
if (PermissionUtil.HasSelfPermission(this, Manifest.Permission.Camera))
{
// Camera permissions is already available, show the camera preview.
Log.Info(TAG, "CAMERA permission has already been granted. Displaying camera preview.");
ShowCameraPreview();
}
else
{
// Camera permission has not been granted.
Log.Info(TAG, "CAMERA permission has NOT been granted. Requesting permission.");
// Provide an additional rationale to the user if the permission was not granted
// and the user would benefit from additional context for the use of the permission.
if (ShouldShowRequestPermissionRationale(Manifest.Permission.Camera))
{
Log.Info(TAG, "Displaying camera permission rationale to provide additional context.");
Toast.MakeText(this, Resource.String.permission_camera_rationale, ToastLength.Short).Show();
}
// Request Camera permission.
RequestPermissions(new string[] { Manifest.Permission.Camera }, REQUEST_CAMERA);
}
}
public void ShowContacts(View v)
{
Log.Info(TAG, "Show contacts button pressed. Checking permissions.");
// Verify that all required contact permissions have been granted.
if (PermissionUtil.HasSelfPermission(this, PERMISSIONS_CONTACT))
{
// Contact permissions have been granted. Show the contacts fragment.
Log.Info(TAG, "Contact permissions have already been granted. Displaying contact details.");
ShowContactDetails();
}
else
{
// Contacts permissions have not been granted.
Log.Info(TAG, "Contact permissions has NOT been granted. Requesting permission.");
// Provide an additional rationale to the user if the permission was not granted
// and the user would benefit from additional context for the use of the permission.
if (ShouldShowRequestPermissionRationale(Manifest.Permission.ReadContacts) ||
ShouldShowRequestPermissionRationale(Manifest.Permission.WriteContacts))
{
Log.Info(TAG, "Displaying contacts permission rationale to provide additional context.");
Toast.MakeText(this, Resource.String.permission_contacts_rationale, ToastLength.Short).Show();
}
// Request Contact permission.
RequestPermissions(PERMISSIONS_CONTACT, REQUEST_CONTACTS);
}
}
public void ShowContacts(View v)
{
Log.Info(TAG, "Show contacts button pressed. Checking permissions.");
// Verify that all required contact permissions have been granted.
if (PermissionUtil.HasSelfPermission(this, PERMISSIONS_CONTACT))
{
Log.Info(TAG, "Contact permissions have already been granted. Displaying contact details.");
// Contact permissions have been granted. Show the contacts fragment.
ShowContactDetails();
}
else
{
Log.Info(TAG, "Contact permissions has NOT been granted. Requesting permission.");
// contact permissions has not been granted (read and write contacts). Request them.
RequestPermissions(PERMISSIONS_CONTACT, REQUEST_CONTACTS);
}
}
public void ShowCamera(View view)
{
Log.Info(TAG, "Show camera button pressed. Checking permission.");
// Check if the Camera permission is already available.
if (PermissionUtil.HasSelfPermission(this, Manifest.Permission.Camera))
{
Log.Info(TAG, "CAMERA permission has already been granted. Displaying camera preview.");
// Camera permissions is already available, show the camera preview.
ShowCameraPreview();
}
else
{
Log.Info(TAG, "CAMERA permission has NOT been granted. Requesting permission.");
// Camera permission has not been granted. Request it.
RequestPermissions(new string[] { Manifest.Permission.Camera }, REQUEST_CAMERA);
}
}
/**
* Callback received when a permissions request has been completed.
*/
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
if (requestCode == REQUEST_CAMERA)
{
// Received permission result for camera permission.
Log.Info(TAG, "Received response for Camera permission request.");
// Check if the only required permission has been granted
if (grantResults.Length == 1 && grantResults[0] == Permission.Granted)
{
// Camera permission has been granted, preview can be displayed
Log.Info(TAG, "CAMERA permission has now been granted. Showing preview.");
Snackbar.Make(layout, Resource.String.permission_available_camera, Snackbar.LengthShort).Show();
}
else
{
Log.Info(TAG, "CAMERA permission was NOT granted.");
Snackbar.Make(layout, Resource.String.permissions_not_granted, Snackbar.LengthShort).Show();
}
}
else if (requestCode == REQUEST_CONTACTS)
{
Log.Info(TAG, "Received response for contact permissions request.");
// We have requested multiple permissions for contacts, so all of them need to be
// checked.
if (PermissionUtil.VerifyPermissions(grantResults))
{
// All required permissions have been granted, display contacts fragment.
Snackbar.Make(layout, Resource.String.permission_available_contacts, Snackbar.LengthShort).Show();
}
else
{
Log.Info(TAG, "Contacts permissions were NOT granted.");
Snackbar.Make(layout, Resource.String.permissions_not_granted, Snackbar.LengthShort).Show();
}
}
else
{
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
