Android

how to reduce the image size in android

public static Bitmap getResizedBitmap(Bitmap image, int newHeight,
int newWidth) {
int width = image.getWidth();
int height = image.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// create a matrix for the manipulation
Matrix matrix = new Matrix();
// resize the bit map
matrix.postScale(scaleWidth, scaleHeight);
// recreate the new Bitmap
Bitmap resizedBitmap = Bitmap.createBitmap(image, 0, 0, width, height,
matrix, false);
return resizedBitmap;
}

how to decrese the size of bitmap in android

how to resize the bitmap in android

how to write single dialogue for all activities in android

public static void getAlertDialog(String title, String message, Context ctx) {
AlertDialog.Builder builder = new AlertDialog.Builder(ctx);
builder.setTitle(title);
builder.setMessage(message).setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
return;
}
});
builder.create();
builder.show();
}

how to validate email in android

public static boolean isEmailValid(String email) {
// boolean isValid = false;
final Pattern EMAIL_ADDRESS_PATTERN = Pattern
.compile("[a-zA-Z0-9+._%-+]{1,256}" + "@" + "."
+ "[a-zA-Z0-9][a-zA-Z0-9-]{0,64}" + "(" + "."
+ "[a-zA-Z0-9][a-zA-Z0-9-]{0,25}" + ")+");

return EMAIL_ADDRESS_PATTERN.matcher(email).matches();
}

how to check the internet is available or not in android

public static boolean isOnline(Activity ctx) {
ConnectivityManager cm = (ConnectivityManager) ctx
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
return true;
}
return false;
}