Android加载图片需要圆角化,有什么简单粗暴的方法吗?当然有,用我们的神器glide
1)简单办法
ImageView imageView = (ImageView)helper.getView(R.id.keepHomeAppImageview);
Glide.with(mContext)
.asBitmap()
.load(iconUrl)
// .override(180, 180)
.centerCrop()
// .sizeMultiplier(0.5f)
.into(new BitmapImageViewTarget(imageView) {
@Override
protected void setResource(Bitmap resource) {
RoundedBitmapDrawable circularBitmapDrawable =
RoundedBitmapDrawableFactory.
create(mContext.getResources(), resource);
circularBitmapDrawable.setCornerRadius(20);
imageView.setImageDrawable(circularBitmapDrawable);
}
});
2)复杂办法
public static void loadCircleImage(Context context, ImageView view, String path, boolean leftTop, boolean rightTop, boolean leftBottom, boolean rightBottom, int radius) {
RoundedCornersTransform transform = new RoundedCornersTransform(context, UnitUtils.dip2px(context, radius));
transform.setNeedCorner(leftTop, rightTop, leftBottom, rightBottom);
RequestOptions options = new RequestOptions().placeholder(RandomColorUtils.getRandomColor()).transform(transform);
Glide.with(context).asBitmap().load(path).apply(options).into(view);
}
public static void loadCircleImage(Context context, ImageView view, String path, int radius) {
loadCircleImage(context, view, path, true, true, true, true, radius);
}
public static void loadCircleImage(ImageView view, String path, int radius) {
loadCircleImage(BaseApp.getInstance().getContext(), view, path, true, true, true, true, radius);
}
public class RoundedCornersTransform implements Transformation {
private BitmapPool mBitmapPool;
private float radius;
private boolean isLeftTop, isRightTop, isLeftBottom, isRightBotoom;
/**
* 需要设置圆角的部分
*
* @param leftTop 左上角
* @param rightTop 右上角
* @param leftBottom 左下角
* @param rightBottom 右下角
*/
public void setNeedCorner(boolean leftTop, boolean rightTop, boolean leftBottom, boolean rightBottom) {
isLeftTop = leftTop;
isRightTop = rightTop;
isLeftBottom = leftBottom;
isRightBotoom = rightBottom;
}
/**
* @param context 上下文
* @param radius 圆角幅度
*/
public RoundedCornersTransform(Context context, float radius) {
this.mBitmapPool = Glide.get(context).getBitmapPool();
this.radius = radius;
}
@NonNull
@Override
public Resource transform(@NonNull Context context, @NonNull Resource resource, int outWidth, int outHeight) {
Bitmap source = resource.get();
int finalWidth, finalHeight;
//输出目标的宽高或高宽比例
float scale;
if (outWidth > outHeight) {
//如果 输出宽度 > 输出高度 求高宽比
scale = (float) outHeight / (float) outWidth;
finalWidth = source.getWidth();
//固定原图宽度,求最终高度
finalHeight = (int) ((float) source.getWidth() * scale);
if (finalHeight > source.getHeight()) {
//如果 求出的最终高度 > 原图高度 求宽高比
scale = (float) outWidth / (float) outHeight;
finalHeight = source.getHeight();
//固定原图高度,求最终宽度
finalWidth = (int) ((float) source.getHeight() * scale);
}
} else if (outWidth < outHeight) {
//如果 输出宽度 < 输出高度 求宽高比
scale = (float) outWidth / (float) outHeight;
finalHeight = source.getHeight();
//固定原图高度,求最终宽度
finalWidth = (int) ((float) source.getHeight() * scale);
if (finalWidth > source.getWidth()) {
//如果 求出的最终宽度 > 原图宽度 求高宽比
scale = (float) outHeight / (float) outWidth;
finalWidth = source.getWidth();
finalHeight = (int) ((float) source.getWidth() * scale);
}
} else {
//如果 输出宽度=输出高度
finalHeight = source.getHeight();
finalWidth = finalHeight;
}
//修正圆角
this.radius *= (float) finalHeight / (float) outHeight;
Bitmap outBitmap = this.mBitmapPool.get(finalWidth, finalHeight, Bitmap.Config.ARGB_8888);
if (outBitmap == null) {
outBitmap = Bitmap.createBitmap(finalWidth, finalHeight, Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(outBitmap);
Paint paint = new Paint();
//关联画笔绘制的原图bitmap
BitmapShader shader = new BitmapShader(source, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
//计算中心位置,进行偏移
int width = (source.getWidth() - finalWidth) / 2;
int height = (source.getHeight() - finalHeight) / 2;
if (width != 0 || height != 0) {
Matrix matrix = new Matrix();
matrix.setTranslate((float) (-width), (float) (-height));
shader.setLocalMatrix(matrix);
}
paint.setShader(shader);
paint.setAntiAlias(true);
RectF rectF = new RectF(0.0F, 0.0F, (float) canvas.getWidth(), (float) canvas.getHeight());
//先绘制圆角矩形
canvas.drawRoundRect(rectF, this.radius, this.radius, paint);
//左上角圆角
if (!isLeftTop) {
canvas.drawRect(0, 0, radius, radius, paint);
}
//右上角圆角
if (!isRightTop) {
canvas.drawRect(canvas.getWidth() - radius, 0, canvas.getWidth(), radius, paint);
}
//左下角圆角
if (!isLeftBottom) {
canvas.drawRect(0, canvas.getHeight() - radius, radius, canvas.getHeight(), paint);
}
//右下角圆角
if (!isRightBotoom) {
canvas.drawRect(canvas.getWidth() - radius, canvas.getHeight() - radius, canvas.getWidth(), canvas.getHeight(), paint);
}
return BitmapResource.obtain(outBitmap, this.mBitmapPool);
}
@Override
public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {
}
}