从自定义列表视图抓取筛选项时的IndexOutOfBound

Question

我已经创建了一个自定义列表视图，它生成正确的数据，但是当我尝试按其名称搜索特定项时，它会返回正确的项，但在1秒后由于一个IndexOutOfBoundException而崩溃，不太确定为什么要将所有数组初始化到正确的大小。

BossAdapter.java Boss.java

ListView listView;
int[] boss_icon = {R.drawable.boss_1, R.drawable.boss_2, R.drawable.boss_3,
        R.drawable.boss_4, R.drawable.boss_5, R.drawable.boss_6, R.drawable.boss_7,
        R.drawable.boss_8, R.drawable.boss_9, R.drawable.boss_10, R.drawable.boss_11,
        R.drawable.boss_12, R.drawable.boss_13, R.drawable.boss_14, R.drawable.boss_15,
        R.drawable.boss_16, R.drawable.boss_17, R.drawable.boss_18};
String[] boss_title=  new String[18];
BossAdapter adapter;
String[] bossTime=  new String[18];
Handler handler;
String[] bossAppearance=  new String[18];
EditText search_view;
ArrayList<Boss> bossList;
int bossID;

private int getID(String name){
    int id = 0;

    switch(name){
        case "다크 지란트":
            id = 0;
            return id;
        case "머쉬맘":
            id = 1;
            return id;
        case "MARK52 ALPHA":
            id = 2;
            return id;
        case "깡패 바라하":
            id = 3;
            return id;
        case "데블린 워리어":
            id = 4;
            return id;
        case "닉시":
            id = 5;
            return id;
        case "에피":
            id = 6;
            return id;
        case "자이언트 라바아이":
            id = 7;
            return id;
        case "둔둔":
            id = 8;
            return id;
        case "레버넌트 좀비":
            id = 9;
            return id;
        case "우르자":
            id = 10;
            return id;
        case "부기콜리":
            id = 11;
            return id;
        case "그리폰":
            id = 12;
            return id;
        case "프랑케네뜨":
            id = 13;
            return id;
        case "경비대장 차우":
            id = 14;
            return id;
        case "그리피나":
            id = 15;
            return id;
        case "매드오네뜨":
            id = 16;
            return id;
        case "자이언트 터틀":
            id = 17;
            return id;
    }

    return id;
}
private void createListview(){
    listView = (ListView) findViewById(R.id.list_view);
    search_view = (EditText)findViewById(R.id.search_text);

    boss_title = getResources().getStringArray(R.array.boss_array);

    bossList = new ArrayList<Boss>();


    adapter = new BossAdapter(getApplicationContext(), bossList);


    listView.setAdapter(adapter);
    listView.setTextFilterEnabled(true);
    bossTime = getKoreanTime();


    // Moved our object creation here, so that it should only be done once.
    for (String boss : boss_title) {
        bossID = getID(boss);
        bossAppearance = bossAppearance(bossID);


        Boss bossObject = new Boss(boss_icon[bossID], boss, bossTime[bossID], bossAppearance[bossID]);
        bossList.add(bossObject);

    }



    handler = new Handler();
    Runnable update = new Runnable() {
        @Override
        public void run() {
            bossTime = getKoreanTime();
            int count = adapter.getCount();

            for(String boss: boss_title){
                bossID = getID(boss);
                bossAppearance = bossAppearance(bossID);
                ((Boss) adapter.getItem(bossID)).setBoss_time(bossTime[bossID]); // Re-set time
                ((Boss) adapter.getItem(bossID)).setBoss_appearance(bossAppearance[bossID]);
            }

            adapter.notifyDataSetChanged(); // Notify our update
            handler.postDelayed(this, 1000);
        }
    };
    handler.postDelayed(update, 10);

    EditText myFilter = (EditText) findViewById(R.id.search_text);
    myFilter.addTextChangedListener(new TextWatcher() {

        public void afterTextChanged(Editable s) {
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before, int count) {
            adapter.getFilter().filter(s.toString());
        }
    });

}

Strings.xml

 Boss Timer

<string-array name="boss_array">
    <item>다크 지란트</item>
    <item>머쉬맘</item>
    <item>MARK52 ALPHA</item>
    <item>깡패 바라하</item>
    <item>데블린 워리어</item>
    <item>닉시</item>
    <item>에피</item>
    <item>자이언트 라바아이</item>
    <item>둔둔</item>
    <item>레버넌트 좀비</item>
    <item>우르자</item>
    <item>부기콜리</item>
    <item>그리폰</item>
    <item>프랑케네뜨</item>
    <item>경비대장 차우</item>
    <item>그리피나</item>
    <item>매드오네뜨</item>
    <item>자이언트 터틀</item>

</string-array>

​

逻辑猫

07-24 17:11:18.628  11159-11159/baegmon.com.bosstimer E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: baegmon.com.bosstimer, PID: 11159
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
        at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
        at java.util.ArrayList.get(ArrayList.java:308)
        at baegmon.com.bosstimer.BossAdapter.getItem(BossAdapter.java:38)
        at baegmon.com.bosstimer.MainActivity$1.run(MainActivity.java:158)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5257)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

您忘记将数据集中的更改通知适配器。

// Moved our object creation here, so that it should only be done once.
for (String boss : boss_title) {
    ...
}
adapter.notifyDataSetChanged(); // This is required

为了避免任何混淆，上面的for循环是代码中显示的第一个循环。

Answer 2

这是一个问题，boss_title有18个条目。您正在尝试将循环从0迭代到18，然后得到列表中不存在的第n项。

((Boss) adapter.getItem(bossID)).setBoss_time(bossTime[bossID]);

bossID可能是比列表大小更大的东西。

……

for(String boss: boss_title){
                bossID = getID(boss);
                bossAppearance = bossAppearance(bossID);
                ((Boss) adapter.getItem(bossID)).setBoss_time(bossTime[bossID]); // Re-set time
                ((Boss) adapter.getItem(bossID)).setBoss_appearance(bossAppearance[bossID]);
            }