在Android中,BlurMaskFilter
可以用來為視圖添加模糊效果。要處理不同形狀的模糊,你可以使用Path
來定義形狀,然后將其應用到BlurMaskFilter
上。以下是一個簡單的示例,展示了如何使用BlurMaskFilter
為不同形狀的視圖添加模糊效果:
View
類,并在其onDraw
方法中使用Canvas
和Path
來繪制形狀。public class CustomShapeView extends View {
private Path mPath;
private Paint mPaint;
private BlurMaskFilter mBlurMaskFilter;
public CustomShapeView(Context context) {
super(context);
init();
}
public CustomShapeView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
mPath = new Path();
mPaint = new Paint();
mPaint.setAntiAlias(true);
mBlurMaskFilter = new BlurMaskFilter(10, BlurMaskFilter.BlurStyle.NORMAL);
}
public void setShape(Path shape) {
mPath.reset();
mPath.addPath(shape);
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Draw the shape
canvas.drawPath(mPath, mPaint);
// Apply the blur mask filter to the canvas
canvas.drawRect(0, 0, getWidth(), getHeight(), mPaint);
canvas.drawRect(0, 0, getWidth(), getHeight(), mBlurMaskFilter);
}
}
CustomShapeView
,并設置不同的形狀。<your.package.name.CustomShapeView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:shape="oval" />
<your.package.name.CustomShapeView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:shape="rectangle" />
在這個示例中,我們創建了一個名為CustomShapeView
的自定義視圖,它可以根據傳入的Path
對象繪制不同的形狀。你可以通過調用setShape
方法來更改形狀。在onDraw
方法中,我們首先繪制形狀,然后將其應用到BlurMaskFilter
上,并將結果繪制到畫布上。這樣,你就可以為不同形狀的視圖添加模糊效果了。