图片保存到sd卡

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;/**
 * This Activty shows how to save an image (Bitmap) to the filesystem, with FileOutputStream object
 * @author FaYnaSoft Labs
 *
 */
public class Main extends Activity {
 private Bitmap bitmap;    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);        bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon);
        FileOutputStream fos = null;
        try {
            fos = openFileOutput("image", Context.MODE_PRIVATE);
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
        } catch (FileNotFoundException e) {
        } finally {
            if (fos != null) {
                try {
                    fos.flush();
                    fos.close();
                } catch (IOException e) {
                }
            }
        }
    }
}