android 图片设置圆角

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把图片变成圆角
http://www.eoeandroid.com/thread-164071-1-1.html

 

-----------------------帖子正文---------------------

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/layout"     android:orientation="vertical"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     ></LinearLayout>package com.test.demo;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.PorterDuff.Mode;import android.graphics.PorterDuffXfermode;import android.graphics.Rect;import android.graphics.RectF;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.widget.ImageView;import android.widget.LinearLayout;public class MyActivity extends Activity {     /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);//        Drawable drawable = getResources().getDrawable(R.drawable.bg);//        BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;//        Bitmap bitmap = bitmapDrawable.getBitmap();                 LinearLayout layout = (LinearLayout) findViewById(R.id.layout);         Drawable drawable = getResources().getDrawable(R.drawable.bg);         BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;         Bitmap bitmap = bitmapDrawable.getBitmap();                 BitmapDrawable bbb = new BitmapDrawable(toRoundCorner(bitmap, 30));         layout.setBackgroundDrawable(bbb);         //ImageView imageView = (ImageView) findViewById(R.id.imgShow);         //imageView.setImageBitmap(MyActivity.getRoundedCornerBitmap(bitmap));         //imageView.setImageBitmap(MyActivity.toRoundCorner(bitmap, 20));     }     public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {                    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);          Canvas canvas = new Canvas(output);            final int color = 0xff424242;          final Paint paint = new Paint();          final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());          final RectF rectF = new RectF(rect);          final float roundPx = pixels;            paint.setAntiAlias(true);          canvas.drawARGB(0, 0, 0, 0);          paint.setColor(color);          canvas.drawRoundRect(rectF, roundPx, roundPx, paint);            paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));          canvas.drawBitmap(bitmap, rect, rect, paint);            return output;      }}

原文链接：http://www.eoeandroid.com/thread-233561-1-1.html