android圆头像,圆形头像图片

android 怎么利用shape实现圆形用户头像

?xml version="1.0" encoding="UTF-8"?shape

xmlns:android=""

android:shape="oval"

android:useLevel="false"

solid android:color="@color/common_red" /

padding

android:left="2dp"

android:top="1dp"

android:right="2dp"

android:bottom="1dp" /

solid

android:color="@color/common_red" /

stroke

android:width="1dp"

android:color="@android:color/white" /

size android:width="15dp"

android:height="15dp" //shape

相关问答

Q1: android xml圆型头像怎么办

android生成圆形头像

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {

Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);

Canvas canvas = new Canvas(output);

final Paint paint = new Paint();

//保证是方形，并且从中心画

int width = bitmap.getWidth();

int height = bitmap.getHeight();

int w;

int deltaX = 0;

int deltaY = 0;

if (width = height) {

w = width;

deltaY = height - w;

} else {

w = height;

deltaX = width - w;

}

final Rect rect = new Rect(deltaX, deltaY, w, w);

final RectF rectF = new RectF(rect);

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

//圆形，所有只用一个

int radius = (int) (Math.sqrt(w * w * 2.0d) / 2);

canvas.drawRoundRect(rectF, radius, radius, paint);

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

canvas.drawBitmap(bitmap, rect, rect, paint);

return output;

}

Q2: android中 怎么显示一直图片为圆形图片

android中的imageview只能显示矩形的图片，这样一来不能满足我们其他的需求，比如要显示圆形的图片，这个时候，我们就需要自定义imageview了，其原理就是首先获取到图片的bitmap，然后进行裁剪圆形的bitmap，然后在ondraw（）进行绘制圆形图片输出。