我面临的问题是 -
1.我有一个自定义网格视图。视图的适配器仅为五个元素膨胀项目，但显示列表时，在最后一个索引后重复显示。
例如，如果适配器中只有5个元素，则显示它时会变为10或15，然后当我单击任何项目时，它会显示outOfBoundException。
2.单击子按钮时，应将项目数减少一个。有时，它只是没有。我无法弄清楚原因。添加按钮完美无缺。
public class MyAdaptertwo extends BaseAdapter
{
public static List<Item> items = new ArrayList<Item>();
private LayoutInflater inflater;
int j;
int k=0;
public static int no[]=new int[5];
public static int co[]=new int[5];
public static int cos[]={1,2,3,4,5};
public static List<list> rowitems = new ArrayList<list>();
static int size=0;
public MyAdaptertwo(Context context)
{
inflater = LayoutInflater.from(context);
items.add(new Item("S", R.drawable.s,"1",R.drawable.v));
items.add(new Item("F", R.drawable.t,"2",R.drawable.v));
items.add(new Item("C",R.drawable.c,"3",R.drawable.n));
items.add(new Item("P", R.drawable.i,"4",R.drawable.v));
items.add(new Item("P", R.drawable.p,"5",R.drawable.n));
}
@Override
public int getCount() {
return items.size();
}
@Override
public Object getItem(int i)
{
j=i;
return items.get(i);
}
public void setCost(int i,String a)
{
items.get(i).cost=a;
}
@Override
public long getItemId(int i)
{
return items.get(i).colorId;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup)
{
View v = view;
ImageView picture;
ImageView vn;
TextView name;
TextView costs;
if(v == null)
{
v = inflater.inflate(R.layout.gridview_item, viewGroup, false);
v.setTag(R.id.picture, v.findViewById(R.id.picture));
v.setTag(R.id.vnon, v.findViewById(R.id.vnon));
v.setTag(R.id.text, v.findViewById(R.id.text));
v.setTag(R.id.cost,v.findViewById(R.id.cost));
}
picture = (ImageView)v.getTag(R.id.picture);
vn=(ImageView)v.getTag(R.id.vnon);
name = (TextView)v.getTag(R.id.text);
costs=(TextView)v.getTag(R.id.cost);
Item item = (Item)getItem(i);
picture.setImageResource(item.colorId);
name.setText(item.name);
costs.setText(item.cost);
vn.setImageResource(item.vnId);
Button add=(Button)v.findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (size == 0) {
Log.e("first j-1",Integer.toString(j-1));
no[j - 1] = no[j - 1] + 1;
Log.e("first no[j-1]",Integer.toString(no[j-1]));
list item = new list(items.get(j - 1).colorId, items.get(j - 1).name, Integer.toString(co[j-1]), Integer.toString(no[j - 1]));
rowitems.add(item);
Log.e("n", Integer.toString(no[j - 1]));
size++;
Log.e("first size",Integer.toString(size));
}
else {
int y = 0, pos = 0;
for (int i = 0; i < size; i++) {
if ((rowitems.get(i).title).equals((items.get(j - 1).name))) {
y = 1;
pos = i;
}
}
if (y == 1) {
Log.e("else j-1",Integer.toString(j-1));
no[j - 1] = no[j - 1] + 1;
Log.e("else no[j-1]",Integer.toString(no[j-1]));
rowitems.get(pos).no =Integer.toString(1+Integer.parseInt(rowitems.get(pos).no));
String s= rowitems.get(pos).cost;
int c=Integer.parseInt(s);
c=c+cos[j-1];
Log.e("C", Integer.toString(c));
//co[j-1]=c;
rowitems.get(pos).cost=Integer.toString(c);
Log.e("else co[j-1]", Integer.toString(co[j - 1]));
Log.e("else c",Integer.toString(c));
Log.e("else size",Integer.toString(size));
}
else {
Log.e("else else j-1",Integer.toString(j-1));
no[j - 1] = no[j - 1] + 1;
Log.e("else else no[j-1]",Integer.toString(no[j-1]));
list item = new list(items.get(j - 1).colorId, items.get(j - 1).name, Integer.toString(co[j-1]), Integer.toString(no[j - 1]));
rowitems.add(item);
/* String s=items.get(j-1).cost.toString();
int c=Integer.parseInt(s);
c=c+(c/no[j-1]);
setCost(j-1,Integer.toString(c));
MyAdaptertwo.this.notifyDataSetChanged();*/
size++;
Log.e("else else size",Integer.toString(size));
}
}
}
});
Button sub=(Button)v.findViewById(R.id.sub);
sub.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (size > 0) {
Log.e("if size ",Integer.toString(size));
int y = 0, pos = 0;
for (int i = 0; i < size; i++) {
Log.e("if i ",Integer.toString(i));
Log.e("if j-1 ",Integer.toString(j-1));
if ((rowitems.get(i).title).equals((items.get(j - 1).name))) {
y = 1;
pos = i;
Log.e("title",rowitems.get(i).title);
Log.e("name",items.get(j-1).name);
Log.e("if pos ",Integer.toString(pos));
}
}
if (y == 1) {
no[j - 1] = no[j - 1] - 1;
Log.e("y==1 no[j-1] ",Integer.toString(no[j-1]));
rowitems.get(pos).no = Integer.toString(Integer.parseInt(rowitems.get(pos).no)-1);
Log.e("row no", rowitems.get(pos).no);
String s= rowitems.get(pos).cost;
int c=Integer.parseInt(s);
c=c-cos[j-1];
Log.e("C", Integer.toString(c));
//co[j-1]=c;
rowitems.get(pos).cost=Integer.toString(c);
Log.e("else co[j-1]", Integer.toString(co[j - 1]));
Log.e("else c",Integer.toString(c));
Log.e("else size",Integer.toString(size));
if (no[j - 1] <= 0) {
if (size == 1) {
size = 0;
rowitems.clear();
} else if (size > 1) {
rowitems.remove(pos);
}
}
}
}
}
});
return v;
}
private class Item
{
final String name;
final int colorId;
String cost;
final int vnId;
Item(String name, int drawableId,String cost,int vnId)
{
this.name = name;
this.colorId = drawableId;
this.cost=cost;
this.vnId=vnId;
}
}
}
Xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFF">
<com.food.foodjugaad.SquareImageView
android:id="@+id/picture"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:padding="5dp"
/>
<TextView
android:id="@+id/text"
android:layout_below="@+id/picture"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_gravity="bottom"
android:textColor="@android:color/black"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Rs."
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_gravity="bottom"
android:textColor="@android:color/black"
android:layout_below="@+id/text"
android:id="@+id/rs"
/>
<TextView
android:id="@+id/cost"
android:layout_below="@+id/text"
android:layout_width="210dp"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_gravity="bottom"
android:textColor="@android:color/black"
android:layout_toRightOf="@+id/rs"
/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginLeft="5dp"
android:layout_toRightOf="@+id/text"
android:layout_below="@+id/picture"
android:id="@+id/vnon"/>
<Button
android:layout_width="50dp"
android:layout_height="20dp"
android:text="+"
android:textColor="#FFF"
android:layout_below="@+id/vnon"
android:layout_toRightOf="@+id/cost"
android:id="@+id/add"
android:background="@drawable/button_back"/>
<Button
android:layout_width="30dp"
android:layout_height="20dp"
android:text="-"
android:id="@+id/sub"
android:textColor="#FFF"
android:layout_below="@+id/vnon"
android:background="@drawable/button_background"
android:layout_toRightOf="@+id/add"/>
</RelativeLayout>
Logcat -
Reconstruct Branch: AU_LINUX_ANDROID_LA.BF.1.1.1_RB1.05.00.02.042.016 + 62ca4eb + acd831d + 9f8b442 + e027a02 + cba30ba + 53c303a + a649d79 + 23e16f8 + 5e97da7 + cbd2a44 + 33d072a + 7aacf06 + 72b33e7 + 28f6f60 + b4c13d8 + NOTHING
12-28 16:24:28.585 15183-15204/com.food.foodjugaad I/OpenGLRenderer﹕ Initialized EGL, version 1.4
12-28 16:24:28.607 15183-15204/com.food.foodjugaad D/OpenGLRenderer﹕ Enabling debug mode 0
12-28 16:24:34.981 15183-15204/com.food.foodjugaad D/OpenGLRenderer﹕ endAllStagingAnimators on 0xb8017500 (GridView) with handle 0xb80994e0
12-28 16:24:36.571 15183-15183/com.food.foodjugaad E/first j-1﹕ 0
12-28 16:24:36.571 15183-15183/com.food.foodjugaad E/first no[j-1]﹕ 1
12-28 16:24:36.572 15183-15183/com.food.foodjugaad E/n﹕ 1
12-28 16:24:36.572 15183-15183/com.food.foodjugaad E/first size﹕ 1
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/else j-1﹕ 0
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/else no[j-1]﹕ 1
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/C﹕ 2
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/else co[j-1]﹕ 1
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/else c﹕ 2
12-28 16:24:37.304 15183-15183/com.food.foodjugaad E/else size﹕ 1
12-28 16:24:39.759 15183-15183/com.food.foodjugaad E/else else j-1﹕ 3
12-28 16:24:39.759 15183-15183/com.food.foodjugaad E/else else no[j-1]﹕ 1
12-28 16:24:39.759 15183-15183/com.food.foodjugaad E/else else size﹕ 2
12-28 16:24:41.229 15183-15183/com.food.foodjugaad E/else else j-1﹕ 2
12-28 16:24:41.229 15183-15183/com.food.foodjugaad E/else else no[j-1]﹕ 1
12-28 16:24:41.229 15183-15183/com.food.foodjugaad E/else else size﹕ 3
12-28 16:24:42.196 15183-15204/com.food.foodjugaad D/OpenGLRenderer﹕ endAllStagingAnimators on 0xb81a6018 (RippleDrawable) with handle 0xb82722f8
答案 0 :(得分：4)
您应在宣布static时删除ArrayList，并建议您使用private代替public
public static List<Item> items = new ArrayList<Item>();
到
private List<Item> items = new ArrayList<Item>();
原因是：静态变量属于类，而不属于该类的任何特定对象。它不会发布，所以每次创建Adapter时，列表都会继续增加。这对性能来说真的很糟糕
希望这个帮助
答案 1 :(得分：0)
您每次都在items添加值。在向其添加项目之前清除它。
items.clear();
关于您的outOfBoundException
当您运行3次时，您的商品将包含15个值，但no，co和cos将不会有15个值。
如果不需要静态列表将其删除，它将解决您的所有问题。简单地写一下，
List<Item> items = new ArrayList<Item>();
答案 2 :(得分：0)
在添加新值之前清除数组。
arrayName.clear（）;