Picasso via URL-a circular display of the user's avatar

1. Set Layout properties:

<imageview    android:scaletype= "Fitxy"/>

2.BitmapUtils class--bitmap object with a specified circle

public static Bitmap Circlebitmap (Bitmap source) {    //Gets the width of the Bitmap    int width = source.getwidth ();    The width value of the bitmap as the new bitmap's wide height value.    Bitmap Bitmap = Bitmap.createbitmap (width, width, Bitmap.Config.ARGB_8888);    Using this bitmap as a benchmark, create a canvases canvas canvas    = new canvas (bitmap);    Paint paint = new paint ();    Paint.setantialias (true);    Draw a circle canvas.drawcircle on the canvas    (WIDTH/2, WIDTH/2, WIDTH/2, paint);    To set how images are handled when the picture intersects    //setxfermode: Sets the mode of processing when the image being drawn intersects, it contains the common patterns:    //porterduff.mode.src_in Take two layers of image intersection part, Show only the upper image    //porterduff.mode.dst_in take the two-layer image intersection section, showing only the underlying image    Paint.setxfermode (New Porterduffxfermode ( PorterDuff.Mode.SRC_IN));    Draw Bitmap    canvas.drawbitmap (source, 0, 0, paint) on the canvas;    return bitmap;}

3.BitmapUtils class--Compress picture

Implementation of image compression processing//Setting wide height must use floating-point type, otherwise result in compression ratio: 0public static Bitmap Zoom (Bitmap source,float width, float height) {    Matrix Matrix = new Matrix ();    Image compression processing    Matrix.postscale (Width/source.getwidth (), Height/source.getheight ());    Bitmap Bitmap = bitmap.createbitmap (source, 0, 0, source.getwidth (), Source.getheight (), Matrix, false);    return bitmap;}

4. Display the circular image according to User.getimageurl ()

Get Picture Picasso.with (This.getactivity ()) using Picasso networking. Load (User.getimageurl ()). Transform (New transformation () {    @Override public    Bitmap transform (Bitmap source) {//Download Bitmap object in memory after//        compression processing        Bitmap Bitmap = Bitmaputils.zoom (source, uiutils.dp2px), uiutils.dp2px (());        Round treatment        bitmap = Bitmaputils.circlebitmap (bitmap);        Recycling Bitmap Resources        source.recycle ();        return bitmap;    }    @Override Public    String key () {        return "";//need to guarantee that the return value cannot be null. Otherwise the error    }). into (Ivmeicon);

　　

　　

　　

Picasso via URL-a circular display of the user's avatar