缩小大图片的面积

public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.main);
??????? TextView jpgName = (TextView)findViewById(R.id.jpgname);
??????? ImageView jpgView = (ImageView)findViewById(R.id.jpgview);
???????
??????? String myJpgPath = "/sdcard/DSC_3509.JPG"; //UPDATE WITH YOUR OWN JPG FILE
???????
??????? jpgName.setText(myJpgPath);
???????
??????? BitmapFactory.Options options = new BitmapFactory.Options();
? options.inSampleSize = 2;
? Bitmap bm = BitmapFactory.decodeFile(myJpgPath, options);
? jpgView.setImageBitmap(bm);
??? }

?BitmapFactory.Options options = new BitmapFactory.Options();
? options.inSampleSize = 2;
主要是这两个