从图库中获取图像 - 并非所有图像都“存在”？
我只是想获取用户选择的图像的路径，然后将其转换为位图。问题是，只有画廊中的某些图像在选择时才起作用（我所说的“工作”是指它们被发现是存在的文件），而其他图像则声称该文件不存在（即使图像显示）在画廊里？）。更奇怪的是，这似乎并不一致，一个曾经被认为“存在”的图像现在声称不存在。我的代码如下：
-----意图-----
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, GALLERY_ACTIVITY);
-----onActivityForResult-----
Uri uri = intent.getData();
String [] proj={MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri,proj,null,null,null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
BitmapFactory.Options opts = new BitmapFactory.Options();<br/>
opts.inSampleSize = 2;<br/>
Bitmap b = BitmapFactory.decodeFile(cursor.getString(column_index),opts);
对此的任何想法将不胜感激，谢谢！
马特。
I am simply trying to get the path of an image that the user selects and then convert it into a bitmap. The problem is, only some of the images in the gallery work when selected (by "work" I mean they are found to be a file that exists), while the others claim the file does not exist (even though the image is showing up in the gallery?). Even more strange is that this doesn't seem to be consistent, an image that was at one point considered to "exist" now claims to be nonexistent. My code is below:
-----The Intent-----
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, GALLERY_ACTIVITY);
-----onActivityForResult-----
Uri uri = intent.getData();
String [] proj={MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri,proj,null,null,null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
BitmapFactory.Options opts = new BitmapFactory.Options();<br/>
opts.inSampleSize = 2;<br/>
Bitmap b = BitmapFactory.decodeFile(cursor.getString(column_index),opts);
Any ideas on this will be greatly appreciated, thank you!
Matt.
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图库中的某些图像是从外部来源（例如Picasa）加载的，因此没有存储在本地，导致本地文件路径读取失败。您可以通过读取 uri 值来区分它们。我找不到解决此问题的方法，也许是这个错误 http://code .google.com/p/android/issues/detail?id=21234 很快就能找到解决方案。
Some images in gallery were loaded from external sources (such as Picasa), thus were not stored locally, causing local filepath reading failure. You can distinguish them by reading your uri value. I could not find a fix for this, perhaps this bug http://code.google.com/p/android/issues/detail?id=21234 can lure out a solution soon.