我怎样才能在Android的微调得到一个事件时，当前所选的项目再次选择？ [英] How can I get an event in Android Spinner when the current selected item is selected again?

问题描述

我写了一个setOnItemSelectedListener何时微调项目更改微调回应。我的要求是，当我再次点击当前所选的项目，敬酒应该显示。如何让这一事件？在当前选定的项目再次点击，微调没有响应。 `

  StorageSpinner.setOnItemSelectedListener（新AdapterView.OnItemSelectedListener（）{

        @覆盖
        公共无效onItemSelected（适配器视图适配器，视图V，INT I，长期LNG）{
            Toast.makeText（getApplicationContext（），（CharSequence中）StorageSpinner.getSelectedItem（），Toast.LENGTH_SHORT）.show（）;

        }

        @覆盖
        公共无效onNothingSelected（适配器视图为arg0）{
            Toast.makeText（getApplicationContext（），没有选择，Toast.LENGTH_SHORT）.show（）;

        }
    }）;
 

解决方案

当你再次点击当前选择的项目的话，就不会触发任何事件。所以，你不能赶上setOnItemSelectedListener的微调做出回应。

I have written an setOnItemSelectedListener for spinner to respond when the spinner item is changed. My requirement is when I clicks again the currently selected item, a toast should display. How to get this event? When the currently selected item is clicked again, spinner is not responding. `

    StorageSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener(){

        @Override
        public void onItemSelected(AdapterView adapter, View v, int i, long lng) {              
            Toast.makeText(getApplicationContext(), (CharSequence) StorageSpinner.getSelectedItem(), Toast.LENGTH_SHORT).show();

        }

        @Override
        public void onNothingSelected(AdapterView arg0) {
            Toast.makeText(getApplicationContext(), "Nothing selected", Toast.LENGTH_SHORT).show();

        }
    });  

解决方案

When you clicks again the currently selected item, then it can not fire any event. So you can not catch setOnItemSelectedListener for spinner to respond.

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