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我想創建一個簡單的猜謎遊戲,使用媒體播放器從基於android studio中的ArrayList數組的歌曲中獲取內容。所以我在開始時聲明瞭一個索引,每次隨機增加1,並且每當用戶單擊一個答案(使用onClick方法)時也會發生。ArrayList上的索引問題(Android Studio)
ImageButton play, answer1, answer2, answer3;
int[] song = new int[] {R.raw.beautifulithurts, R.raw.iwontletyouwalkaway, R.raw.lebihindah, R.raw.ruletheworld, R.raw.sweetescape, R.raw.thatgirl, R.raw.thisislivingnow, R.raw.thislife, R.raw.thousandmiles, R.raw.u};
int[] image = new int[] {R.drawable.lvlaa, R.drawable.lvlab, R.drawable.lvlac, R.drawable.lvlad, R.drawable.lvlae, R.drawable.lvlaf, R.drawable.lvlag, R.drawable.lvlah, R.drawable.lvlai, R.drawable.lvlaj};
ArrayList<Integer> numbers = new ArrayList<>();
ArrayList<Integer> cloning = new ArrayList<>();
int index = 0, a = 0, b = 1, c = 2, random = 0, x = 0, y = 0, z = 0, benar = 0, salah = 0;
MediaPlayer mp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.game);
play = (ImageButton) findViewById(R.id.play);
answer1 = (ImageButton) findViewById(R.id.answer1);
answer2 = (ImageButton) findViewById(R.id.answer2);
answer3 = (ImageButton) findViewById(R.id.answer3);
for (int i = 0; i <= song.length; i++) {
numbers.add(i);
}
Collections.shuffle(numbers);
random();
play.setOnClickListener(this);
answer1.setOnClickListener(this);
answer2.setOnClickListener(this);
answer3.setOnClickListener(this);
}
public void prepareAnswer() {...}
public void random() {
mp = MediaPlayer.create(this, song[numbers.get(index)]);
mp.start();
prepareAnswer();
answer1.setImageResource(image[x]);
answer2.setImageResource(image[y]);
answer3.setImageResource(image[z]);
index++;
}
@Override
public void onClick(View v) {...}
}
但每次我重新啓動遊戲時,logcat的顯示錯誤:數組索引出界的異常(尺寸:10指數:10)。如何處理此錯誤並將索引重置爲0,每次我重新啓動遊戲時?
請張貼在這裏您完全logcat的錯誤....... – sushildlh
java.lang.ArrayIndexOutOfBoundsException:長度= 10; index = 10 at com.lucreamysong.beatupthebeat.game.random(game.java:92) at com.lucreamysong.beatupthebeat.game.onClick(game.java:118) @sushildlh – Yoel
看看答案,我想它解決你的問題..... – sushildlh