Android 文件绝对路径和Content开头的Uri互相转换

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工作中遇到的问题。拍照获取图片后是得到的路径是

1. file:///storage/emulated/0/Android/data/com.zehin.mingchuliangzao3/cache/PostPicture/20160905182015.jpg

但是我想要的路径是：

1. content://media/external/images/media/212304

这种 Uri类型的

查阅资料找到如下方法

转Uri

1. /**

2. * Gets the content:// URI from the given corresponding path to a file

3. *

4. * @param context

5. * @param imageFile

6. * @return content Uri

7. */

8. public static Uri getImageContentUri(Context context, java.io.File imageFile) {

9. String filePath = imageFile.getAbsolutePath();

10. Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,

11. new String[] { MediaStore.Images.Media._ID }, MediaStore.Images.Media.DATA + "=? ",

12. new String[] { filePath }, null);

13. if (cursor != null && cursor.moveToFirst()) {

14. int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));

15. Uri baseUri = Uri.parse("content://media/external/images/media");

16. return Uri.withAppendedPath(baseUri, "" + id);

17. } else {

18. if (imageFile.exists()) {

19. ContentValues values = new ContentValues();

20. values.put(MediaStore.Images.Media.DATA, filePath);

21. return context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

22. } else {

23. return null;

24. }

25. }

26. }

Uri转绝对路径

1. /**

2. * Gets the corresponding path to a file from the given content:// URI

3. * @param selectedVideoUri The content:// URI to find the file path from

4. * @param contentResolver The content resolver to use to perform the query.

5. * @return the file path as a string

6. */

7. public static String getFilePathFromContentUri(Uri selectedVideoUri,

8. ContentResolver contentResolver) {

9. String filePath;

10. String[] filePathColumn = {MediaColumns.DATA};

12. Cursor cursor = contentResolver.query(selectedVideoUri, filePathColumn, null, null, null);

13. // 也可用下面的方法拿到cursor

14. // Cursor cursor = this.context.managedQuery(selectedVideoUri, filePathColumn, null, null, null);

16. cursor.moveToFirst();

18. int columnIndex = cursor.getColumnIndex(filePathColumn[0]);

19. filePath = cursor.getString(columnIndex);

20. cursor.close();

21. return filePath;

22. }

绝对路径转Uri的那个方法 目前是图片文件的转换 转其他文件 只要把content后面的目录换成对应文件的归属目录就行了。。