[英]How to get selected image name from gallery in xamarin android
如何從xamarin android中的畫廊中獲取選定的圖像名稱。當用戶單擊按鈕時,圖像畫廊打開,我得到圖像,但我不知道如何獲取圖像名稱。
當用戶單擊按鈕時,這是按鈕單擊事件,圖片庫打開並且我選擇了圖像
fab2.Click += (o, e) =>
{
Intent = new Intent(Intent.ActionPick,
MediaStore.Images.Media.InternalContentUri);
Intent.SetType("image/*");
StartActivityForResult(Intent.CreateChooser(Intent,"SelectPicture"), 1 );
};
當選擇圖像時,我得到圖像,但是...這是我有問題。我不知道如何獲得選定的圖像名稱。
protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if ((requestCode == PickImageId) && (resultCode == Result.Ok) && (data != null))
{
Android.Net.Uri uri = data.Data;
string path = uri.Path;
string filename = path.Substring(path.LastIndexOf("/") + 1);
// String s = path(selectedImageUri);
Bitmap bitmap = MediaStore.Images.Media.GetBitmap(ContentResolver, data.Data);
}
}
修改此代碼Add Method Getpath(),它將返回您選擇的圖像的路徑,您可以在其中獲取選擇的圖像的名稱。
protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if ((requestCode == PickImageId) && (resultCode == Result.Ok) && (data != null))
{
string imagePath = null;
Android.Net.Uri uri = data.Data;
var path = GetPath(uri);
string filename = path.Substring(path.LastIndexOf("/") + 1);
// String s = path(selectedImageUri);
Bitmap bitmap = MediaStore.Images.Media.GetBitmap(ContentResolver, data.Data);
}
}
public string GetPath(Android.Net.Uri uri)
{
string path = null;
String[] projection = { MediaStore.MediaColumns.Data };
ContentResolver cr = ApplicationContext.ContentResolver;
var metaCursor = cr.Query(uri, projection, null, null, null);
if (metaCursor != null)
{
try
{
if (metaCursor.MoveToFirst())
{
path = metaCursor.GetString(0);
}
}
finally
{
metaCursor.Close();
}
}
return path;
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.