public class DataStoreActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main);
DownloadFile("
image file path www.");
byte b[] = readInternalStoragePrivate("download.jpg");
Bitmap bmp = BitmapFactory.decodeByteArray(b, 0, b.length);
ImageView imageView = new ImageView(this);
imageView.setImageBitmap(bmp);
setContentView(imageView);
}
/**
* Reads a file from internal storage
* @param filename the file to read from
* @return the file content
*/
public byte[] readInternalStoragePrivate(String filename) {
int len = 1024;
byte[] buffer = new byte[len];
try {
FileInputStream fis = openFileInput(filename);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int nrb = fis.read(buffer, 0, len); // read up to len bytes
while (nrb != -1) {
baos.write(buffer, 0, nrb);
nrb = fis.read(buffer, 0, len);
}
buffer = baos.toByteArray();
fis.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buffer;
}
/**
* Writes content to internal storage making the content private to
* the application. The method can be easily changed to take the MODE
* as argument and let the caller dictate the visibility:
* MODE_PRIVATE, MODE_WORLD_WRITEABLE, MODE_WORLD_READABLE, etc.
*
* @param filename - the name of the file to create
* @param content - the content to write
*/
public void writeInternalStoragePrivate(
String filename, byte[] content) {
try {
//MODE_PRIVATE creates/replaces a file and makes
// it private to your application. Other modes:
// MODE_WORLD_WRITEABLE
// MODE_WORLD_READABLE
// MODE_APPEND
FileOutputStream fos =
openFileOutput(filename, Context.MODE_PRIVATE);
fos.write(content);
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Delete internal private file
* @param filename - the filename to delete
*/
public void deleteInternalStoragePrivate(String filename) {
File file = getFileStreamPath(filename);
if (file != null) {
file.delete();
}
}
public void DownloadFile(String fileURL) {
try {
// File file = new File(fileName,);
// file.createNewFile();
// FileOutputStream f = new FileOutputStream(file);
FileOutputStream f = openFileOutput("download.jpg", Context.MODE_PRIVATE);
URL u = new URL(fileURL);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = in.read(buffer)) > 0) {
f.write(buffer, 0, len1);
}
f.close();
// Log.d("Download Completed", )
} catch (Exception e) {
e.printStackTrace();
}
}
}
