背景圆角以及图片圆角处理
<?xml version="1.0" encoding="utf-8"?>?
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">?
? ? ? ? <item android:drawable="@drawable/icon_home_button_img"/>?
? ? ? ? <item android:drawable="@drawable/icon_home_shape_overlay"/>?</layer-list>?
?
?
?
icon_home_shape_overlay如下
<?xml version="1.0" encoding="utf-8"?>?
<shape xmlns:android="http://schemas.android.com/apk/res/android">?
? ? <solid android:color="#60000000"/>?
? ? <stroke android:width="3dp" color="#ff000000"/>?
? ? <corners android:radius="10dp" />?
</shape>?
或者直接使用一种效果
<?xml version="1.0" encoding="UTF-8"?>?
<shape xmlns:android="http://schemas.android.com/apk/res/android">?
? ? <solid android:color="#99FFFFFF"/>?
? ? <corners android:radius="30px"/>?
? ? <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" /> ?
</shape>
然后 android:background="@drawable/my_shape_file"?
?
?2.图片本身加上圆角
Bitmap myCoolBitmap = ... ; // <-- Your bitmap you want rounded ? ??
int w = myCoolBitmap.getWidth(), h = myCoolBitmap.getHeight();?
?
Bitmap rounder = Bitmap.createBitmap(w,h,Bitmap.Config.ARGB_8888);?
Canvas canvas = new Canvas(rounder); ? ??
?
Paint xferPaint = new Paint(Paint.ANTI_ALIAS_FLAG);?
xferPaint.setColor(Color.RED);?
?
canvas.drawRoundRect(new RectF(0,0,w,h), 20.0f, 20.0f, xferPaint); ? ? ?
?
xferPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));?
canvas.drawBitmap(myCoolBitmap, 0,0, null);?
canvas.drawBitmap(rounder, 0, 0, xferPaint);?
或者
?public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
??? 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 = 12;
?
??? 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;
? }
