Learn more about drawing rounded pictures in the Android learning notes

[Java]View PlainCopy

2. Package Xiaosi. Roundconcer;
6. Import android.app.Activity;
8. Import Android.graphics.Bitmap;
10. Import Android.graphics.Bitmap.Config;
12. Import Android.graphics.BitmapFactory;
14. Import Android.graphics.Canvas;
16. Import Android.graphics.Paint;
18. Import Android.graphics.PorterDuff.Mode;
20. Import Android.graphics.PorterDuffXfermode;
22. Import Android.graphics.Rect;
24. Import Android.graphics.RectF;
26. Import Android.os.Bundle;
28. Import Android.widget.ImageView;
32. Public class Roundconceractivity extends Activity
34. {
36. /** Called when the activity is first created. * /
38. private ImageView roundimage = null;
40. @Override
42. public void OnCreate (Bundle savedinstancestate)
44. {
46. super.oncreate (savedinstancestate);
48. Setcontentview (R.layout.main);
52. Roundimage = (ImageView) Findviewbyid (r.id.roundconcer);
58. Bitmap Bitmap = Bitmapfactory.decoderesource (Getresources (), r.drawable.a);
60. Roundimage.setimagebitmap (Getroundcornerimage (bitmap, 50));
62. }
66. public static Bitmap getroundcornerimage (Bitmap Bitmap, int roundpixels)
68. {
70. //Create a bitmap of the same size as the original picture
72. Bitmap roundconcerimage = Bitmap.createbitmap (Bitmap.getwidth (),
74. Bitmap.getheight (), config.argb_8888);
76. //Create a canvas with bitmap roundconcerimage
78. Canvas canvas = new Canvas (roundconcerimage);
80. //Create brushes
82. Paint paint = new paint ();
84. //Create a rectangle of the same size as the original picture
86. Rect rect = new Rect (0, 0, Bitmap.getwidth (), Bitmap.getheight ());
88. RECTF RECTF = new RECTF (rect);
90. //anti-aliasing
92. Paint.setantialias (true);
94. //Draw a rounded rectangle of the same size as the original picture
96. Canvas.drawroundrect (RECTF, Roundpixels, roundpixels, paint);
98. //Set intersect mode
100. Paint.setxfermode (new Porterduffxfermode (mode.src_in));
102. //Draw the picture to the rectangle
104. Canvas.drawbitmap (bitmap, null, rect, paint);
106. return roundconcerimage;
108. }
110. }

Learn more about drawing rounded pictures in the Android learning notes