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http://www.bangchui.org/read.php?tid=10646
通过使用canvas.clipPath,可以将一个规则的位图裁剪为不规则的位图 一个矩形的图,一般画出来是这样子的: 我们需要画成这个样子: 通过canvas.clipPath(path);方法可以达到这个效果,看代码: package org.bangchui; import android.content.Context; import android.graphics.Canvas; import android.graphics.Path; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.View; public class MyView extends View { private Drawable mDrawable; public MyView(Context context) { super(context); init(); } public MyView(Context context, AttributeSet attrs) { super(context, attrs); init(); } public MyView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(); } private void init() { mDrawable = getResources().getDrawable(R.drawable.testpath); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); Path path = new Path(); path.moveTo(0, 0); path.lineTo(300, 0); path.lineTo(300, 150); path.lineTo(150, 300); path.lineTo(0, 300); path.lineTo(0, 0); canvas.clipPath(path); mDrawable.setBounds(0, 0, getWidth(), getHeight()); mDrawable.draw(canvas); } }本文地址: http://bajiewuneng.iteye.com/blog/1918148 |
android 用canvas.clipPath 画不规则的Bitmap
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转载自uwind.iteye.com/blog/1918148
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