android 获取网络图片

package com.image; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.util.Log; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.graphics.Matrix; public class image extends Activity { private Button mButton1; private TextView mTextView1; private ImageView mImageView1; //图片的网络地址 String uriPic = "http://i.pbase.com/o6/92/229792/1/80199697.uAs58yHk.50pxCross_of_the_Knights_Templar_svg.png"; private static final String tag = "TestImage-----> "; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton1 = (Button) findViewById(R.id.myButton1); mTextView1 = (TextView) findViewById(R.id.myTextView1); mImageView1 = (ImageView) findViewById(R.id.myImageView1); mButton1.setOnClickListener(new Button.OnClickListener() { public void onClick(View arg0) { Bitmap bitmap =getURLBitmap(); // mImageView1.setImageBitmap(bitmap); mImageView1.setImageDrawable(resizeImage(bitmap, 300, 300)); mTextView1.setText(""); } }); } public Bitmap getURLBitmap() { URL imageUrl = null; Bitmap bitmap = null; try { imageUrl = new URL(uriPic); HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection(); conn.connect(); InputStream is = conn.getInputStream(); bitmap = BitmapFactory.decodeStream(is); is.close(); } catch (Exception e) { e.printStackTrace(); } return bitmap; } public static Drawable resizeImage(Bitmap bitmap, int w, int h) { Bitmap BitmapOrg = bitmap; int width = BitmapOrg.getWidth(); int height = BitmapOrg.getHeight(); int newWidth = w; int newHeight = h; Log.v(tag,String.valueOf(width)); Log.v(tag,String.valueOf(height)); Log.v(tag,String.valueOf(newWidth)); Log.v(tag,String.valueOf(newHeight)); // calculate the scale float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; // create a matrix for the manipulation Matrix matrix = new Matrix(); // resize the Bitmap matrix.postScale(scaleWidth, scaleHeight); // rotate the Bitmap matrix.postRotate(45); // recreate the new Bitmap Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true); return new BitmapDrawable(resizedBitmap); } }