怎么让TextView显示圆圈背景或者设置圆角

先把这个图片转成bitmap，然后把这个bitmap转成圆角Bitmap，然后把这个圆角bitmap设置成textview的背景，下面是相应的代码，希望对你能有帮助，不用谢了public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,int roundPixelSize) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888)Canvas canvas = new Canvas(output)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 = roundPixelSizepaint.setAntiAlias(true)canvas.drawRoundRect(rectF,roundPx,roundPx, paint)paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN))canvas.drawBitmap(bitmap, rect, rect, paint)return output}

android设置imageview圆角主要使用的是shape.xml文件，对四个角的角度进行设置，只要再imageview的background的属性上加上shape文件即可达到效果，示例如下：

shapeyuanjiao3.xml：

<?xml version="1.0" encoding="UTF-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle" > <!-- 填充的颜色 --> <solid android:color="#0000FF" /> <!-- 设置按钮的四个角为弧形 --> <!-- android:radius 弧形的半径 --> <corners android:topLeftRadius="@dimen/RoundedAmplitude" android:topRightRadius="@dimen/RoundedAmplitude"/> <gradientandroid:angle="270"android:centerColor="#0000FF"android:endColor="#0000FF"android:startColor="#0000FF" /> </shape>

imageview、textview等的android:background="@drawable/shapeyuanjiao3"属性，设置尺寸、圆角（可以定制单独显示哪个角需要圆角）。可以参考我的csdn博客的这篇文章：http://blog.csdn.net/nihaoqiulinhe/article/details/46833819

效果如下：

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