最简洁无bug版本圆角webview实现

package com.abc.view;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Path;

import android.graphics.PorterDuff;

import android.graphics.PorterDuffXfermode;

import android.util.AttributeSet;

import android.view.View;

import android.webkit.WebView;

import com.abc.util.Utils;

import com.abc.util.LogUtil;

public class RoundWebView extends WebView {

private int mWidth;

private int mHeight;

private float[] mRadiusArray;

private Path mPath = new Path();

public RoundWebView(Context context, AttributeSet attrs) {

super(context, attrs);

setLayerType(View.LAYER_TYPE_SOFTWARE, null);        // 关闭硬件加速

int radius = Utils.dp2px(15f);

mRadiusArray = new float[] { radius, radius, radius, radius, radius, radius, radius, radius };

}

@Override

protected void onSizeChanged(int newWidth, int newHeight, int oldWidth, int oldHeight) {

super.onSizeChanged(newWidth, newHeight, oldWidth, oldHeight);

mWidth = newWidth;

mHeight = newHeight;

}

@Override

protected void onDraw(Canvas canvas) {

int x = getScrollX();

int y = getScrollY();

mPath.reset();        // 需要设置, 否则滑动到最顶端或最底端时圆角会变直角

mPath.addRoundRect(0, y, x + mWidth, y + mHeight, mRadiusArray, Path.Direction.CW);

canvas.clipPath(mPath);

super.onDraw(canvas);

}

}