在Android中,默认情况下ImageView是一个矩形.如何在ImageView中将其设置为圆角矩形(将我的Bitmap的所有4个角切掉为圆角矩形)?
android rounded-corners imageview android-image android-imageview
我怎么能ImageView在Android中创建圆形?
我尝试了以下代码,但它没有正常工作.
码:
Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
BitmapShader shader = new BitmapShader (bitmap, TileMode.CLAMP, TileMode.CLAMP);
Paint paint = new Paint();
paint.setShader(shader);
Canvas c = new Canvas(circleBitmap);
c.drawCircle(bitmap.getWidth()/2, bitmap.getHeight()/2, bitmap.getWidth()/2, paint);
imageView.setImageBitmap(circleBitmap);
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圆圈内的图像:

我怎样才能做到这一点?
我希望图像有圆角.我实现了这个xml代码并在我的图像视图中使用它.但图像与形状重叠.我正在通过异步任务下载图像.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners android:radius="20dip" />
</shape>
<ImageView
android:id="@+id/trVouchersImage"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_marginLeft="8dp"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:layout_alignParentLeft="true"
android:background="@drawable/ash_arrow"
/>
Run Code Online (Sandbox Code Playgroud) 我想做那样的事.

这是一个列表视图行,其中包含名称和用户图像.
我做了一些搜索并完成了图像循环,但不是完美的解决方案.任何帮助都会帮助我.
我的代码添加到Image Loader类
public Bitmap processBitmap(Bitmap bitmap) {
int pixels = 0;
if (mRound == 0)
pixels = 120;
else
pixels = mRound;
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, …Run Code Online (Sandbox Code Playgroud)