如何在Android中获取私有文件夹的Uri？
如何在Android中获取私有文件夹的Uri？
提问于 2018-08-01 13:03:48
我正在尝试制作一个具有图片库的android相机应用程序。捕获的图像保存在一个私有目录中: Android/data/com.example.newcamera/files/pictures.
每当我使用INTERNAL_CONTENT_URI或，EXTERNAL_CONTENT_URI作为Uri时，这个应用程序会带来我手机的所有公共照片，但不会带来私人目录中的照片。但我只需要那些与私人目录。我怎么才能得到它呢？请帮帮我。我的代码片段如下：
提前谢谢。
protected String doInBackground(String... args) {
String xml = "";
String path = null;
String album = null;
String timestamp = null;
String countPhoto = null;
Uri uriInternal = MediaStore.Images.Media.INTERNAL_CONTENT_URI;
Uri uriExternal = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
Uri myUri = Uri.fromFile(new File(getApplicationContext().getFilesDir().getAbsolutePath()));
String[] projection = { MediaStore.MediaColumns.DATA,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME, MediaStore.MediaColumns.DATE_MODIFIED };
Cursor cursorExternal = getContentResolver().query(uriExternal, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor cursorInternal = getContentResolver().query(uriInternal, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor myCursor = getContentResolver().query(myUri, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor cursor = new MergeCursor(new Cursor[]{cursorExternal, cursorInternal, myCursor});
while (cursor.moveToNext()) {
path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA));
album = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_DISPLAY_NAME));
timestamp = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATE_MODIFIED));
countPhoto = Function.getCount(getApplicationContext(), album);
albumList.add(Function.mappingInbox(album, path, timestamp, Function.converToTime(timestamp), countPhoto));
}
cursor.close();
Collections.sort(albumList, new MapComparator(Function.KEY_TIMESTAMP, "dsc")); // Arranging photo album by timestamp decending
return xml;
}回答 1
Stack Overflow用户
发布于 2018-08-01 13:38:50
您可以通过以下方式从特定文件夹获取文件：
File folder = new File(Environment.getExternalStorageDirectory().toString() + "/Folder Name/");
folder.mkdirs();
File[] allFiles = folder.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return (name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".png"));
}
});您可以通过Uri.fromFile(YOUR FILE)将文件路径转换为Uri
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原文链接：
https://stackoverflow.com/questions/51625655
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