Android圆角图片

my_wane_shape.xml

快速圆角背景边框实现，不太好用：

注：是图层的累加，字面上是多个层，也就是你可以把多个leyaer放在一起然后一其显现出来，类似于framelayout。

<span class="Apple-style-span"><?xml version="1.0" encoding="utf-8"?>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

<item android:drawable="@drawable/</span><span class="Apple-style-span" style="font-family: verdana, Arial, Helvetica, sans-serif; line-height: 30px; white-space: normal; background-color: #ffffff;">background</span><span class="Apple-style-span">_img"/>

<item android:drawable="@drawable/wane_shape"/>

</layer-list>
</span>
　　



wane_shape.xml:

自定义方形圆角背景如下：

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android">

<solid android:color="自定义背景颜色"/>

<stroke android:width="3dp" color="#ff000000"/> 

<corners android:radius="自定义角度dp" />

{

   //或者分步定义没个圆角。

    <corners android:topLeftRadius="10dp"  

     android:topRightRadius="10dp"

     android:bottomRightRadius="10dp"     

     android:bottomLeftRadius="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>

调用语句：通常在你所希望的layout背景中应用

android:background="@drawable/my_wane_shape"





2.图片本身加上圆角

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);  <br>
        return output; 

    }