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;

}