Android ImageView(纯java)
import android.app.Activity; import android.graphics.*; import android.graphics.drawable.*; import android.os.Bundle; import android.widget.*; import android.widget.ImageView.ScaleType; public class ImageViewTest extends Activity { private LinearLayout mainLayout=null; private ImageView iv=null; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /*mainLayout初始化*/ mainLayout=new LinearLayout(this); mainLayout.setLayoutParams(new LinearLayout.LayoutParams(-1,-1)); /*iv初始化*/ iv=new ImageView(this); iv.setLayoutParams(new LinearLayout.LayoutParams(-1,-2)); iv.setScaleType(ScaleType.CENTER);//居中显示 /*加载图片方法1*/ //Drawable d=this.getResources().getDrawable(R.drawable.icon);//此处icon对应drawable文件夹下的icon.png //iv.setImageDrawable(d);//设置图片 /*加载图片方法2*/ int resId=this.getResources().getIdentifier("icon","drawable",getPackageName()); iv.setImageResource(resId); /*加载图片方法3,在方法2的基础上生成Bitmap bm*/ //int resId=this.getResources().getIdentifier("icon","drawable", getPackageName()); //Bitmap bm = BitmapFactory.decodeResource(this.getResources(), resId); //iv.setImageBitmap(bm); mainLayout.addView(iv);//添加iv setContentView(mainLayout);//显示manLayout } }