Not another simple error about Reading File From Sdcard

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http://stackoverflow.com – my dialog displays directory "/sdcard" and all its files. upon selecting the file/image, the path is saved along with the bitmap image. (eg: file.name = "/sdcard/Pictures/Screenshots/Screenshot_2013-01-15-10-42-02.jpg";) however, every time i try to open the file by clicking the bitmap, it causes the opening application to crash, not my application. also, the bitmap doesn't show the image somehow. i have set the write external storage permission. and code snippet are as below. i have really no idea what's going wrong. i also have tried all file types, such as txt, pdf, doc, etc, all causi (HowTos)