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Sunday 17 February 2013
Thursday 14 February 2013
How to download image from server in android programming,how to retrive image file form server in android programming
How to download image from server in android
programming
In this tutorial I will tell you how to download
image from server or a given url .first of all create a new project an in eclipse .
After this go to main_activity.xml and paste the
given code in this file
?xml
version=”1.0” encoding=”utf-8”?>
<LinearLayout
xmlns:android=”http://schemas.android.com/apk/res/android”
android:layout_width=”fill_parent”
android:layout_height=”fill_parent”
android:orientation=”vertical” >
<ImageView
android:id=”@+id/img”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_gravity=”center” />
</LinearLayout>
After this go to main.java and paste the below given
code in this file
import
android.widget.ImageView;
import
android.graphics.Bitmap;
import
android.graphics.BitmapFactory;
import
android.os.AsyncTask;
public
class NetworkingActivity extends Activity {
ImageView img;
private InputStream
OpenHttpConnection(String urlString) throws IOException
{
InputStream in = null;
int response = -1;
URL url = new URL(urlString);
URLConnection conn =
url.openConnection();
if (!(conn instanceof
HttpURLConnection))
throw new IOException(“Not an HTTP
connection”);
try{
HttpURLConnection httpConn =
(HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod(“GET”);
httpConn.connect();
response =
httpConn.getResponseCode();
if (response ==
HttpURLConnection.HTTP_OK) {
in =
httpConn.getInputStream();
}
}
catch (Exception ex)
{
Log.d(“Networking”,
ex.getLocalizedMessage());
throw new IOException(“Error
connecting”);
}
return in;
}
private Bitmap DownloadImage(String URL)
{
Bitmap bitmap = null;
InputStream in = null;
try {
in = OpenHttpConnection(URL);
bitmap =
BitmapFactory.decodeStream(in);
in.close();
} catch (IOException e1) {
Log.d(“NetworkingActivity”,
e1.getLocalizedMessage());
}
return bitmap;
}
private class DownloadImageTask extends
AsyncTask<String, Void, Bitmap> {
protected Bitmap
doInBackground(String... urls) {
return DownloadImage(urls[0]);
}
protected void onPostExecute(Bitmap
result) {
ImageView img = (ImageView)
findViewById(R.id.img);
img.setImageBitmap(result);
}
}
@Override
public void onCreate(Bundle
savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new DownloadImageTask().execute(
“http://www.mayoff.com/5-01cablecarDCP01934.jpg”);
}
}
The highlighted line is the address of server from
where you want to download image here you can give the any url address of an
image of any site.
In eclipse it
may be commas(“ ”) give error so remove these all commas and insert new from
keyboard.
Wednesday 13 February 2013
how to send a message from pc to android emulator
How to send a text message from pc to android emulator
Step 1:Open an emulator or start emulatorstep 2: When emutaor destop screen comes then open eclipse DDMS portion as show below
Step 3:
Follow below step:
Step 4:
Now type message in text area and give some number value on "INCOMMING NUMBER " field and then select sms check box and type text and then press send button
Step 5:
Now check emulator screen there will be text message alert