兑现Android图片圆角

?这里介绍一个主要的方法，也是从网上找的，在此整理出来。。。以备不时之需

/** * 将图片设置为圆角 */public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {	Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),			bitmap.getHeight(), Config.ARGB_8888);	Canvas canvas = new Canvas(output);	final int color = 0xff424242;	final Paint paint = new Paint();	final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());	final RectF rectF = new RectF(rect);	final float roundPx = pixels;	paint.setAntiAlias(true);	canvas.drawARGB(0, 0, 0, 0);	paint.setColor(color);	canvas.drawRoundRect(rectF, roundPx, roundPx, paint);	paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));	canvas.drawBitmap(bitmap, rect, rect, paint);	return output;}

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当我们需要圆角的时候，调用这个方法，第一个参数是传入需要转化成圆角的图片，第二个参数是圆角的度数，数值越大，圆角越大

下面兴趣个例子，我有一个LinearLayout，我想把它的背景图片设置成圆角

布局文件main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"       android:id="@+id/layout"    android:orientation="vertical"       android:layout_width="wrap_content"       android:layout_height="wrap_content"></LinearLayout>

mInflater = LayoutInflater.from(this);		Drawable drawable = getResources().getDrawable(R.drawable.icon);BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;Bitmap bitmap = bitmapDrawable.getBitmap();		View view = mInflater.inflate(	R.layout.share_xiaohua_revert_lv_item_top, null);ImageView mImageView = (ImageView) view	.findViewById(R.id.lv_xiaohua_image);mImageView.setImageBitmap(toRoundCorner(bitmap, 30));

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