获得全分辨率的照片从相机与MonoDroid
本文关键字:相机 MonoDroid 照片 分辨率 | 更新日期: 2023-09-27 18:14:11
我试图找到一种方法从MonoDroid访问全分辨率图片,经过很长一段时间试图将Java示例移植到MonoDroid,看看其他人似乎已经得到了,我目前有以下(不工作)
private const int TAKE_PICTURE = 1;
protected Uri fileUri;
private void takePhoto(object sender, EventArgs e)
{
Intent intent = new Intent(Android.Provider.MediaStore.ActionImageCapture);
string path = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal),
"hqxmmc/pictures/ikbeneenplaatje.jpg");
Java.IO.File xfile = new Java.IO.File(path);
if (xfile.Exists())
{
Android.Util.Log.Warn("FILE", "file exists {0} 'n overwriting!", xfile.Name);
xfile.Delete();
xfile.CreateNewFile();
}
else
{
Android.Util.Log.Warn("FILE", "file does not exist {0}, creating", xfile.Name);
xfile.Mkdirs();
xfile.CreateNewFile();
}
fileUri = Android.Net.Uri.FromFile(xfile);
Android.Util.Log.WriteLine(LogPriority.Warn, "FILE", fileUri.ToString());
intent.PutExtra(Android.Provider.MediaStore.ExtraOutput, fileUri);
StartActivityForResult(intent, TAKE_PICTURE);
}
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if (requestCode == TAKE_PICTURE)
{
Uri imageUri = null;
// Check if the result includes a thumbnail Bitmap
if (data != null)
{
if (data.HasExtra("data"))
{
var thumbnail = data.GetParcelableArrayExtra("data");
Android.Util.Log.WriteLine(LogPriority.Info, "DATA", thumbnail.ToString());
// TODO Do something with the thumbnail
var outputFileUri = data.GetParcelableArrayExtra("outputFileuri");
Android.Util.Log.WriteLine(LogPriority.Info, "DATA", outputFileUri.ToString());
// TODO Do something with the full image stored
// in outputFileUri
}
}
else
{
//todo : reload full image form fileuri
Android.Util.Log.WriteLine(LogPriority.Info, "PATH", fileUri.ToString());
}
}
}
显示"拍照"屏幕,我可以拍照,但该照片随后被保存到设备上的默认DCIM文件夹,忽略我为其指定的文件名和路径。
当我保存图片时,OnActivityResult被调用,但是它的Intent data
参数包含一个空意图。
我如何访问全分辨率图片和/或我刚刚拍摄的图片的缩略图?
我将简单地张贴我在项目中使用的代码。希望对你有所帮助。我也试图通过ContentValues类设置文件名和路径,就像它在Android wiki中描述的那样,但都是无效的,我认为这是一些MonoDroid的错误。
private string _imageUri;
private Boolean isMounted
{
get
{
return Android.OS.Environment.ExternalStorageState.Equals(Android.OS.Environment.MediaMounted);
}
}
public void BtnCameraClick(object sender, EventArgs eventArgs)
{
var uri = ContentResolver.Insert(isMounted ? MediaStore.Images.Media.ExternalContentUri
: MediaStore.Images.Media.InternalContentUri, new ContentValues());
_imageUri = uri.ToString();
var i = new Intent(MediaStore.ActionImageCapture);
i.PutExtra(MediaStore.ExtraOutput, uri);
StartActivityForResult(i, CAPTURE_PHOTO);
}
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
if (resultCode == Result.Ok && requestCode == CAPTURE_PHOTO)
{
Toast.MakeText(this, string.Format("Image URI is {0}",_imageUri), ToastLength.Short).Show();
}
}