[我尝试单击微调器项目,当我单击1 Kg时它崩溃并给出错误信息
Blockquote java.lang.IndexOutOfBoundsException:索引:2,大小:2
这是我的Spinner and It listner代码:-
这是我的静态数组:-
val values = arrayOf(
"250 gm",
"500 gm",
"1 Kg",
"2 Kg",
"3 Kg",
"4 Kg", "5 Kg", "6 Kg", "7 Kg"
)
设置ArrayAdapter:-
ArrayAdapter(
context,
android.R.layout.simple_spinner_item,
values
).also {
it.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
holder.product_spinner_kg.adapter = it
}
这是此微调器的侦听器:-
holder.product_spinner_kg.onItemSelectedListener =
object : AdapterView.OnItemSelectedListener {
override fun onNothingSelected(parent: AdapterView<*>?) {
}
override fun onItemSelected(
parent: AdapterView<*>?, view: View?, position: Int, id: Long
) {
selectedQty = values[position]
if (position == 0) {
holder.product_price.text =
"Rs. " + (items[position].price.toDouble() * 0.25)
} else if (position == 1) {
holder.product_price.text =
"Rs. " + (items[position].price.toDouble() * 0.50)
} else if (position == 2) {
holder.product_price.text =
"Rs. " + (items[position].price.toDouble() * 1.00)
} else if (position == 3) {
holder.product_price.text =
"Rs. " + (items[position].price.toDouble() * 2.00)
} else if (position == 4) {
holder.product_price.text =
"Rs. " + (items[position].price.toDouble() * 3.00)
}
}
}
我的例外是:-
java.lang.IndexOutOfBoundsException:索引:2,大小:2在java.util.ArrayList.get(ArrayList.java:437)在com.maruti.marutisabji.adapter.user.ProductAdapter $ onBindViewHolder $ 3.onItemSelected(ProductAdapter.kt:107)在android.widget.AdapterView.fireOnSelected(AdapterView.java:944)在android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:933)在android.widget.AdapterView.access $ 300(AdapterView.java:53)在android.widget.AdapterView $ SelectionNotifier.run(AdapterView.java:898)在android.os.Handler.handleCallback(Handler.java:873)在android.os.Handler.dispatchMessage(Handler.java:99)在android.os.Looper.loop(Looper.java:201)在android.app.ActivityThread.main(ActivityThread.java:6820)在java.lang.reflect.Method.invoke(本机方法)在com.android.internal.os.RuntimeInit $ MethodAndArgsCaller.run(RuntimeInit.java:547)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:922)
这是我的代码链接,请检查:-https://gist.github.com/maulikdadhaniya/c0e16a9a13d03e9b7abe2235a35e7324
您的代码必须以else块结尾
我建议在下面的代码块中避免这种IndexOutOfBound
错误: