文章标题

http://blog.csdn.net/u012572538/article/details/21447905
content Uri to path

public static String getFilePathFromContentUri(Uri selectedVideoUri,
ContentResolver contentResolver) {
String filePath;
String[] filePathColumn = {MediaColumns.DATA};

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

// 也可用下面的方法拿到cursor
// Cursor cursor = this.context.managedQuery(selectedVideoUri, filePathColumn, null, null, null);

    cursor.moveToFirst();      int columnIndex = cursor.getColumnIndex(filePathColumn[0]);      filePath = cursor.getString(columnIndex);      cursor.close();      return filePath;  }  

path to content Uri

public static Uri getImageContentUri(Context context, java.io.File imageFile) {
String filePath = imageFile.getAbsolutePath();
Cursor cursor = context.getContentResolver().query(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Images.Media._ID },
MediaStore.Images.Media.DATA + “=? “,
new String[] { filePath }, null);
if (cursor != null && cursor.moveToFirst()) {
int id = cursor.getInt(cursor
.getColumnIndex(MediaStore.MediaColumns._ID));
Uri baseUri = Uri.parse(“content://media/external/images/media”);
return Uri.withAppendedPath(baseUri, “” + id);
} else {
if (imageFile.exists()) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DATA, filePath);
return context.getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
} else {
return null;
}
}
}