Mega Code Archive
Create Image and resize Image
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//package com.runlog;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.widget.ImageView;
import android.widget.Toast;
/**
* AppUtils is a helper class that makes it easy to perform frequently used
* tasks in Android development.
*
* @author Nazmul Idris
* @version 1.0
* @since Jul 8, 2008, 2:35:39 PM
*/
public class AppUtils {
/**
* 127.0.0.1 in the emulator points back to itself. Use this if you want to
* access your host OS
*/
public static String EmulatorLocalhost = "10.0.2.2";
/**
* shows a short message on top of your app... it goes away automatically
* after a short delay
*/
public static void showToastShort(Activity a, String msg) {
Toast.makeText(a, msg, Toast.LENGTH_SHORT).show();
}
/**
* shows a short message on top of your app... it goes away automatically
* after a long delay
*/
public static void showToastLong(Activity a, String msg) {
Toast.makeText(a, msg, Toast.LENGTH_LONG).show();
}
public static void showToast(Activity a, String msg, int length) {
Toast.makeText(a, msg, length).show();
}
/**
* create an image view, given a drawable. you can set the max size of this
* imageview as well.
*
* @param iconWidth
* -1 means dont set this
* @param iconHeight
* -1 means dont set this
* @param imageRes
* -1 means dont set this
*/
public static ImageView createImageView(Context activity, int iconWidth,
int iconHeight, int imageRes) {
ImageView icon = new ImageView(activity);
icon.setAdjustViewBounds(true);
icon.setScaleType(ImageView.ScaleType.FIT_CENTER);
if (iconHeight != -1)
icon.setMaxHeight(iconHeight);
if (iconWidth != -1)
icon.setMaxWidth(iconWidth);
if (imageRes != -1)
icon.setImageResource(imageRes);
return icon;
}
/** simply resizes a given drawable resource to the given width and height */
public static Drawable resizeImage(Context ctx, int resId, int iconWidth,
int iconHeight) {
// load the origial Bitmap
Bitmap BitmapOrg = BitmapFactory.decodeResource(ctx.getResources(),
resId);
int width = BitmapOrg.getWidth();
int height = BitmapOrg.getHeight();
int newWidth = iconWidth;
int newHeight = iconHeight;
// calculate the scale
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// create a matrix for the manipulation
Matrix matrix = new Matrix();
// resize the Bitmap
matrix.postScale(scaleWidth, scaleHeight);
// if you want to rotate the Bitmap
// matrix.postRotate(45);
// recreate the new Bitmap
Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,
height, matrix, true);
// make a Drawable from Bitmap to allow to set the Bitmap
// to the ImageView, ImageButton or what ever
return new BitmapDrawable(resizedBitmap);
}
}// end class AppUtils
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