Android Oreo如何从uri获取真实路径?
我使用这段代码从URI获取真实路径。它正在工作 不含奥利奥的棉花糖:Android Oreo如何从uri获取真实路径?,android,android-8.0-oreo,file-sharing,file-copying,android-8.1-oreo,Android,Android 8.0 Oreo,File Sharing,File Copying,Android 8.1 Oreo,我使用这段代码从URI获取真实路径。它正在工作 不含奥利奥的棉花糖: private String getPathNew(Activity activity, Uri uri) { if (isDownloadsDocument(uri)) { final String id = DocumentsContract.getDocumentId(uri); final Uri contentUri = ContentUris.withAppendedId(
private String getPathNew(Activity activity, Uri uri) {
if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(activity, contentUri, null, null);
}
return null;
}
public static String getDataColumn(Context context, Uri uri, String
selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection,
selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
我做错了什么?可能与@shizhen重复不,不是。这是一个奇怪的“bug”,只出现在最近的Android版本中,比如Oreo。@ChenLiYong此错误是由于在年首次引入的文件策略发生了更改而导致的。你要找的问题就在这里。@KartikOhri很想知道。谢谢这个解决方案对我很有效:
public static String getRealPathFromURI(Context context, Uri contentUri) {
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null,
null);
if (cursor != null) {
int column_index =
cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
return null;
}