add image to sdcard folder in android

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http://stackoverflow.com – I want to develop an android application that can select multiple images and save them in a folder of sdcard. I could select multiple files but when i want to save them in sdcard folder there is only images name. I have understood it when i tried to show those images using GridView there are no images. Here is my code..... public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.image_selection); Bundle b=getIntent().getExtras(); directoryName=b.getString("key"); final String[] columns = { MediaStore.Images.Media.DATA (HowTos)