单击按钮后从微调器中删除对象
Remove an object from a spinner once a button is clicked
所以我的应用程序有可以动态添加的微调器,它们是从一个巨大的 Course
对象数组列表中填充的,就像这样
courseSpinner = rowView.findViewById(R.id.first_spinner);
ArrayAdapter<Course> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, courseList);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
courseSpinner.setAdapter(adapter);
parentLayout.addView(rowView, parentLayout.getChildCount() - 1);
allSpinners.add(courseSpinner); //this is an ArrayList of spinners that keeps track of how many spinners exist currently since like mentioned before they can be dynamically added or removed
我想从每个新生成的微调器中删除按下按钮后选择的值。按下按钮时将值保存到单独的哈希映射并删除所有现有的微调器,但我需要实现某种将被调用的更新方法,该方法将重新填充或从 courseList
中减去值,微调器从中获取它们的值.感谢任何帮助
这是带有适配器和列表的微调器:
ArrayAdapter<String> arrayAdapter;
arrayAdapter= new ArrayAdapter<String>(this, R.layout.spinner_indication, yourList);
Spinner yourSpinner;
yourSpinner.setAdapter(arrayAdapter)
从旧列表创建的新列表将其设置为适配器,如下所示:
yourList = newGeneratedList ;
arrayAdapet.notifyDataSetChanged();
所以我的应用程序有可以动态添加的微调器,它们是从一个巨大的 Course
对象数组列表中填充的,就像这样
courseSpinner = rowView.findViewById(R.id.first_spinner);
ArrayAdapter<Course> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, courseList);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
courseSpinner.setAdapter(adapter);
parentLayout.addView(rowView, parentLayout.getChildCount() - 1);
allSpinners.add(courseSpinner); //this is an ArrayList of spinners that keeps track of how many spinners exist currently since like mentioned before they can be dynamically added or removed
我想从每个新生成的微调器中删除按下按钮后选择的值。按下按钮时将值保存到单独的哈希映射并删除所有现有的微调器,但我需要实现某种将被调用的更新方法,该方法将重新填充或从 courseList
中减去值,微调器从中获取它们的值.感谢任何帮助
这是带有适配器和列表的微调器:
ArrayAdapter<String> arrayAdapter;
arrayAdapter= new ArrayAdapter<String>(this, R.layout.spinner_indication, yourList);
Spinner yourSpinner;
yourSpinner.setAdapter(arrayAdapter)
从旧列表创建的新列表将其设置为适配器,如下所示:
yourList = newGeneratedList ;
arrayAdapet.notifyDataSetChanged();