我正在尝试从位图中获取完整尺寸的联系人图像,我知道此图像并不总是可用...但是我发现位图的 uri 不为空,但代码抛出 FileNotFoundException。为什么会发生这种情况我能做些什么来解决这个问题?
我的代码
public Uri getFullSizePhotoUri(Uri contactUri)
{
//get full size photo
Log.d(TAG, "Getting full size photo uri");
Uri photoUri=Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.DISPLAY_PHOTO);
Log.d(TAG, "The full photo uri is "+photoUri.toString());
return photoUri;
}
public Bitmap getFullSizeBitmapFromUri(Uri photoUri)
{
//returns full size picture...does not seem to work on all occasions
AssetFileDescriptor afd=null;
Bitmap bitmap=null;
try
{
afd=context.getContentResolver().openAssetFileDescriptor(photoUri, "r");
InputStream is=afd.createInputStream();
bitmap=BitmapFactory.decodeStream(is);
is.close();
}
catch(FileNotFoundException e)
{
Log.e(TAG, "File not found when trying to retrieve full sized photo using AssetFileDescriptor",e);
return null;
}
catch(IOException e)
{
Log.e(TAG, "Error getting input stream from asset file descriptor",e);
return null;
}
finally
{
try {
afd.close();
} catch (IOException e) {
Log.e(TAG, "Error closing the asset file descriptor",e);
}
}
return bitmap;
}
我在我的 logcat 中找到了这个:
Contact id: 1003
Lookup Uri: content://com.android.contacts/contacts/lookup/3266r1003-q33pq27pq57pq4Fp/1003
Getting full size photo uri
The full photo uri is content://com.android.contacts/contacts/1003/display_photo
File not found when trying to retrieve full sized photo using AssetFileDescriptor
java.io.FileNotFoundException: No photo file found for ID 0
at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:145) at android.content.ContentProviderProxy.openTypedAssetFile(ContentProviderNative.java:612)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:628)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:557)
at com.example.newscancardapp.ContactsAdapter.getFullSizeBitmapFromUri(ContactsAdapter.java:99)
at com.example.newscancardapp.ContactsAdapter.bindView(ContactsAdapter.java:63)
at android.support.v4.widget.CursorAdapter.getView(CursorAdapter.java:256)