我从 Google Play 控制台收到错误:
FATAL EXCEPTION: ControllerMessenger
Process: my_package, PID: 19868
java.lang.ArrayIndexOutOfBoundsException: length=12; index=-1
at java.util.ArrayList.remove(ArrayList.java:405)
at my_package.notepad.utils_adapters.NotesAdapter.removeItem(NotesAdapter.kt:251)
at my_package.notepad.utils_adapters.NotesAdapter.access$removeItem(NotesAdapter.kt:25)
at my_package.notepad.utils_adapters.NotesAdapter$deleteNote$1.onResponse(NotesAdapter.kt:231)
据我所知,该应用程序尝试使用错误的索引,因此发生崩溃。问题就出在这个方法上:
private fun removeItem(position: Int) {
records.removeAt(position)
notifyItemRemoved(position)
notifyItemRangeChanged(position, records.size)
}
当用户尝试从特定列表中删除项目时可以调用此方法。我尝试用 remove
替换 removeAt
,但我得到了使用 removeAt
的严格建议。也许我可以检查位置何时不等于-1,或者这是一个坏主意?
更新
删除项目方法调用:
private fun deleteNote(id: Int?, context: Context, position: Int) {
Singleton.apiService().deleteNote("Bearer " + context.getSharedPreferences("app_data", 0).getString("access_token", ""), id).enqueue(object : Callback<NoteAction> {
override fun onResponse(call: Call<NoteAction>, response: Response<NoteAction>) {
if (response.isSuccessful) {
Toast.makeText(context, "Successfully deleted", Toast.LENGTH_SHORT).show()
removeItem(position)
} else {
try {
val jObjError = JSONObject(Objects.requireNonNull<ResponseBody>(response.errorBody()).string())
Singleton.error["message"] = jObjError.getString("message")
Singleton.error["request_no"] = "19"
Singleton.workingWithErrors(Singleton.error, context)
} catch (e: Exception) {
}
}
}
override fun onFailure(call: Call<NoteAction>, t: Throwable) {
}
})
最佳答案
在执行删除操作之前尝试检查集合中包含的位置。
private fun removeItem(position: Int) {
if(position < 0 || position >= records.size)
return
records.removeAt(position)
notifyItemRemoved(position)
notifyItemRangeChanged(position, records.size)
}
关于java - 错误与removeAt java arraylist android,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58727104/