Android Dev Help: Saving an image from Res/raw or Asset folder to the Sd card
- by Lucy
Android Development Query
Hello,
I wonder if anyone could help me, i am trying to save an image (jpg or png) from the res/raw or assets folder to the SD card location (/sdcard/DCIM/).
I have been following a tutorial which can save an image from a URL to the SD card Root, but i have looked everywhere to be able to save from res/raw or asset folder instead, and to a differnet location onthe sd card /sdcard/DCIM/
Here is the code, can anyone show me how to do the above from this?
Thanks
Lucy
public class home extends Activity {
private File file;
private String imgNumber;
private Button btnDownload;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnDownload=(Button)findViewById(R.id.btnDownload);
btnDownload.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
btnDownload.setText("Download is in Progress.");
String savedFilePath=Download("http://www.domain.com/android1.png");
Toast.makeText(getApplicationContext(), "File is Saved in "+savedFilePath, 1000).show();
if(savedFilePath!=null)
{
btnDownload.setText("Download Completed.");
}
}
});
}
public String Download(String Url)
{
String filepath=null;
try {
//set the download URL, a url that points to a file on the internet
//this is the file to be downloaded
URL url = new URL(Url);
//create the new connection
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
//set up some things on the connection
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
//and connect!
urlConnection.connect();
//set the path where we want to save the file
//in this case, going to save it on the root directory of the
//sd card.
File SDCardRoot = Environment.getExternalStorageDirectory();
//create a new file, specifying the path, and the filename
//which we want to save the file as.
String filename= "download_"+System.currentTimeMillis()+".png"; // you can download to any type of file ex:.jpeg (image) ,.txt(text file),.mp3 (audio file)
Log.i("Local filename:",""+filename);
file = new File(SDCardRoot,filename);
if(file.createNewFile())
{
file.createNewFile();
}
//this will be used to write the downloaded data into the file we created
FileOutputStream fileOutput = new FileOutputStream(file);
//this will be used in reading the data from the internet
InputStream inputStream = urlConnection.getInputStream();
//this is the total size of the file
int totalSize = urlConnection.getContentLength();
//variable to store total downloaded bytes
int downloadedSize = 0;
//create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0; //used to store a temporary size of the buffer
//now, read through the input buffer and write the contents to the file
while ( (bufferLength = inputStream.read(buffer)) > 0 ) {
//add the data in the buffer to the file in the file output stream (the file on the sd card
fileOutput.write(buffer, 0, bufferLength);
//add up the size so we know how much is downloaded
downloadedSize += bufferLength;
//this is where you would do something to report the prgress, like this maybe
Log.i("Progress:","downloadedSize:"+downloadedSize+"totalSize:"+ totalSize) ;
btnDownload.setText("download Status:"+downloadedSize+" / "+totalSize);
}
//close the output stream when done
fileOutput.close();
if(downloadedSize==totalSize) filepath=file.getPath();
//catch some possible errors...
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
filepath=null;
btnDownload.setText("Internet Connection Failed.\n"+e.getMessage());
e.printStackTrace();
}
Log.i("filepath:"," "+filepath) ;
return filepath;
}
}
