复制代码 代码如下:

<?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;

}

}