有人知道如何用Glide显示圆角图像吗? 我正在用Glide加载图像,但我不知道如何将圆角参数传递给这个库。
我需要显示图像像下面的例子:
有人知道如何用Glide显示圆角图像吗? 我正在用Glide加载图像,但我不知道如何将圆角参数传递给这个库。
我需要显示图像像下面的例子:
当前回答
Glide.with(MainActivity.this)
.load(personPhoto)
.transition(withCrossFade(500))
.apply(RequestOptions.circleCropTransform())
.thumbnail(0.5f)
.into(imageView);
其他回答
Glide 4.6.1版本
Glide.with(context)
.load(url)
.apply(RequestOptions.bitmapTransform(new CircleCrop()))
.into(imageView);
implementation 'com.github.bumptech.glide:glide:4.8.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'
RequestOptions options=new RequestOptions();
options.centerCrop().placeholder(getResources().getDrawable(R.drawable.user_placeholder));
Glide.with(this)
.load(preferenceSingleTon.getImage())
.apply(options)
.into(ProfileImage);
你必须使用CircularImageView来显示那种类型的图像…
您正在使用Glide库,用于加载图像..
创建一个类文件在你的项目和加载它在Imageview…你会得到你想要的结果…
试试下面的代码…
XML
<com.yourpackage.CircularImageView
android:id="@+id/imageview"
android:layout_width="96dp"
android:layout_height="96dp"
app:border="true"
app:border_width="3dp"
app:border_color="@color/white"
android:src="@drawable/image" />
CircularImageView.java
public class CircularImageView extends ImageView {
private int borderWidth;
private int canvasSize;
private Bitmap image;
private Paint paint;
private Paint paintBorder;
public CircularImageView(final Context context) {
this(context, null);
}
public CircularImageView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.circularImageViewStyle);
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// init paint
paint = new Paint();
paint.setAntiAlias(true);
paintBorder = new Paint();
paintBorder.setAntiAlias(true);
// load the styled attributes and set their properties
TypedArray attributes = context.obtainStyledAttributes(attrs, R.styleable.CircularImageView, defStyle, 0);
if(attributes.getBoolean(R.styleable.CircularImageView_border, true)) {
int defaultBorderSize = (int) (4 * getContext().getResources().getDisplayMetrics().density + 0.5f);
setBorderWidth(attributes.getDimensionPixelOffset(R.styleable.CircularImageView_border_width, defaultBorderSize));
setBorderColor(attributes.getColor(R.styleable.CircularImageView_border_color, Color.WHITE));
}
if(attributes.getBoolean(R.styleable.CircularImageView_shadow, false))
addShadow();
}
public void setBorderWidth(int borderWidth) {
this.borderWidth = borderWidth;
this.requestLayout();
this.invalidate();
}
public void setBorderColor(int borderColor) {
if (paintBorder != null)
paintBorder.setColor(borderColor);
this.invalidate();
}
public void addShadow() {
setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.BLACK);
}
@Override
public void onDraw(Canvas canvas) {
// load the bitmap
image = drawableToBitmap(getDrawable());
// init shader
if (image != null) {
canvasSize = canvas.getWidth();
if(canvas.getHeight()<canvasSize)
canvasSize = canvas.getHeight();
BitmapShader shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvasSize, canvasSize, false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
// circleCenter is the x or y of the view's center
// radius is the radius in pixels of the cirle to be drawn
// paint contains the shader that will texture the shape
int circleCenter = (canvasSize - (borderWidth * 2)) / 2;
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, ((canvasSize - (borderWidth * 2)) / 2) + borderWidth - 4.0f, paintBorder);
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, ((canvasSize - (borderWidth * 2)) / 2) - 4.0f, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = measureWidth(widthMeasureSpec);
int height = measureHeight(heightMeasureSpec);
setMeasuredDimension(width, height);
}
private int measureWidth(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// The parent has determined an exact size for the child.
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// The parent has not imposed any constraint on the child.
result = canvasSize;
}
return result;
}
private int measureHeight(int measureSpecHeight) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpecHeight);
int specSize = MeasureSpec.getSize(measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = canvasSize;
}
return (result + 2);
}
public Bitmap drawableToBitmap(Drawable drawable) {
if (drawable == null) {
return null;
} else if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable) drawable).getBitmap();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
}
注意:
你可以使用
CircularImageView imgIcon = (CircularImageView)findViewById(R.id.imageview);
or
ImageView imgIcon = (ImageView)findViewById(R.id.imageview);
它不会影响你的其他库…不必改变你的代码下载图像或其他任何东西… 它可以简单地定义使用XML太..
其他的解决方法对我都不起作用。我发现它们都有明显的缺点:
使用滑动转换的解决方案不能使用占位符 使用圆形图像视图的解决方案不适用于动画(即交叉渐隐) 使用父类的通用方法来剪辑子类(即这里接受的答案)的解决方案不能很好地与glide一起工作
有趣的是,在摸索了一番之后,我发现了Fresco图书馆关于圆角和圆的页面,其中他们列出了基本相同的限制,并以声明结尾:
在Android上没有真正好的解决方案,人们必须在上述的权衡中做出选择
令人难以置信的是,在这个时候我们仍然没有一个真正的解决方案。基于上面的链接,我有一个替代的解决方案。这种方法的缺点是它假设你的背景是纯色的(角落不是真正透明的)。你可以这样使用它:
<RoundedCornerLayout ...>
<ImageView ...>
</RoundedCornerLayout>
要点在这里,完整代码在这里:
public class RoundedCornerLayout extends RelativeLayout {
private Bitmap maskBitmap;
private Paint paint;
private float cornerRadius;
public RoundedCornerLayout(Context context) {
super(context);
init(context, null, 0);
}
public RoundedCornerLayout(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs, 0);
}
public RoundedCornerLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs, defStyle);
}
private void init(Context context, AttributeSet attrs, int defStyle) {
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
setWillNotDraw(false);
}
@Override
public void draw(Canvas canvas) {
super.draw(canvas);
if (maskBitmap == null) {
// This corner radius assumes the image width == height and you want it to be circular
// Otherwise, customize the radius as needed
cornerRadius = canvas.getWidth() / 2;
maskBitmap = createMask(canvas.getWidth(), canvas.getHeight());
}
canvas.drawBitmap(maskBitmap, 0f, 0f, paint);
}
private Bitmap createMask(int width, int height) {
Bitmap mask = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(mask);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.WHITE); // TODO set your background color as needed
canvas.drawRect(0, 0, width, height, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
canvas.drawRoundRect(new RectF(0, 0, width, height), cornerRadius, cornerRadius, paint);
return mask;
}
}
使用这个转换,它会工作得很好。
public class CircleTransform extends BitmapTransformation {
public CircleTransform(Context context) {
super(context);
}
@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
return circleCrop(pool, toTransform);
}
private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
if (source == null) return null;
int borderColor = ColorUtils.setAlphaComponent(Color.WHITE, 0xFF);
int borderRadius = 3;
int size = Math.min(source.getWidth(), source.getHeight());
int x = (source.getWidth() - size) / 2;
int y = (source.getHeight() - size) / 2;
// TODO this could be acquired from the pool too
Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);
if (squared != source) {
source.recycle();
}
Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
// Prepare the background
Paint paintBg = new Paint();
paintBg.setColor(borderColor);
paintBg.setAntiAlias(true);
// Draw the background circle
canvas.drawCircle(r, r, r, paintBg);
// Draw the image smaller than the background so a little border will be seen
canvas.drawCircle(r, r, r - borderRadius, paint);
squared.recycle();
return result;
}
@Override
public String getId() {
return getClass().getName();
}}