如何使用代码动态的获取和设置ImageView的宽度和高度

ImageView imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageResource(R.drawable.newscar);
LayoutParams params = imageView.getLayoutParams();
params.height=200;
params.width =100;
imageView.setLayoutParams(params);
ImageView imageView = (ImageView)findViewById(R.id.imageView);
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.newscar);
Log.i("MainActivity", "宽度："+String.valueOf(bitmap.getWidth()));
Log.i("MainActivity", "高度："+String.valueOf(bitmap.getHeight()));