在陣列中隨機插入6張圖片[6] [6]

Question

//我爲圖片製作了數組，並且嵌套循環重複它們6次，當我運行模擬器時生成「hello world」，我如何查看它們模擬器？

package com.example.abc; 

import java.util.ArrayList; 
import java.util.Collections; 
import java.util.List; 

import android.app.Activity; 
import android.os.Bundle; 
public class MainActivity extends Activity { 
    Integer []arr = new Integer [] {R.drawable.candy1, R.drawable.candy2, R.drawable.candy3,       
     R.drawable.candy4,R.drawable.candy5 ,R.drawable.candy6}; 
@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     shuffleArray(); 
} 
    private void shuffleArray() { 
     // TODO Auto-generated method stub 
     List<Integer> pictures = new ArrayList<Integer>(); 
     for(int i=0; i<6; i++){ 
      for (int j=0 ; j<6 ; j++) 
      { 
       pictures.add(arr[j]); 
       Collections.shuffle(pictures); 
      } 

     } 

    } 

} 

Answer 1

代替

private void shuffleArray() { 
     // TODO Auto-generated method stub 
     List<Integer> pictures = new ArrayList<Integer>(); 
     for(int i=0; i<6; i++){ 
      for (int j=0 ; j<6 ; j++) 
      { 
       pictures.add(arr[j]); 
       Collections.shuffle(pictures); 
      } 

     } 

    } 

試試這個：

private void shuffleArray() { 
    // TODO Auto-generated method stub 
    List<Integer> pictures = new ArrayList<Integer>(); 
    for(int i=0; i < arr.length; i++){ 

      pictures.add(arr[j]); 
      Collections.shuffle(pictures); 

    } 

}