이미지 랜덤하게 출력하기 (ImageView)

activity_main.xml

 

<ImageView      android:id="@+id/SYSDOCU"     android:layout_width="350dp"     android:layout_height="160dp" />

 

 

MainActivity.java

 

package com.tistory.sysdocu; import android.os.Bundle; import android.app.Activity; import android.widget.ImageView; import android.graphics.drawable.Drawable; public class MainActivity extends Activity {         int[] images = new int[] {R.drawable.beautifulindonesia1, R.drawable.beautifulindonesia2, R.drawable.beautifulindonesia3, R.drawable.beautifulindonesia4, R.drawable.beautifulindonesia5}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);         ImageView mImageView = (ImageView)findViewById(R.id.SYSDOCU);         int imageId = (int)(Math.random() * images.length);         mImageView.setBackgroundResource(images[imageId]);         } }