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Most people do not understand the knowledge points of this article "how to dynamically resize pictures in Android", so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to dynamically resize pictures in Android" article.

Sample code for resizing Android images:

View plaincopy to clipboardprint? Private Bitmap getImageFromAssetFile (String fileName,int how) {Bitmap image = null; try {AssetManager am = game.getAssets (); InputStream is = am.open (fileName); image = BitmapFactory.decodeStream (is); is.close ();} catch (Exception e) {} return zoomImage (image,how);} public Bitmap zoomImage (Bitmap bgimage,int how) {int bmpwidth = bgimage.getWidth (); int bmpheight = bgimage.getHeight (); float scaleWidth=0; float scaleHeight=0; Matrix matrix = new Matrix () If (how==0) {scaleWidth= ((float) width) / bmpwidth; scaleHeight= ((float) height) / bmpheight;} else {scaleWidth=Math.min (width,height) / bmpwidth; scaleHeight=Math.min (width,height) / bmpheight;} private Bitmap getImageFromAssetFile (String fileName,int how) {Bitmap image = null; try {AssetManager am = game.getAssets (); InputStream is = am.open (fileName); image = BitmapFactory.decodeStream (is); is.close () } catch (Exception e) {} return zoomImage (image,how);} public Bitmap zoomImage (Bitmap bgimage,int how) {int bmpwidth = bgimage.getWidth (); int bmpheight = bgimage.getHeight (); float scaleWidth=0; float scaleHeight=0; Matrix matrix = new Matrix (); if (how==0) {scaleWidth= ((float) width) / bmpwidth; scaleHeight= ((float) height) / bmpheight;} else {scaleWidth=Math.min (width,height) / bmpwidth ScaleHeight=Math.min (width, height) / bmpheight;}

Among them, scaleWidth and scaleHeight are the size after scaling. Here, a parameter how is added to prevent cases where scaling is not necessary.

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