在Android中,BlurMaskFilter可以用来为视图添加模糊效果。要处理不同形状的模糊,你可以使用Path来定义形状,然后将其应用到BlurMaskFilter上。以下是一个简单的示例,展示了如何使用BlurMaskFilter为不同形状的视图添加模糊效果:
View类,并在其onDraw方法中使用Canvas和Path来绘制形状。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,并设置不同的形状。<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" />
在这个示例中,我们创建了一个名为CustomShapeView的自定义视图,它可以根据传入的Path对象绘制不同的形状。你可以通过调用setShape方法来更改形状。在onDraw方法中,我们首先绘制形状,然后将其应用到BlurMaskFilter上,并将结果绘制到画布上。这样,你就可以为不同形状的视图添加模糊效果了。