java - Spinner if else 语句

Question

我想为 Spinner 做 if else 语句。我宣布“六月”，“七月”，“八月”，“九月”，“十月”，“十一月”，“十二月”

当我点击“August”时，它会给我 MainActivity.java否则它会给我 August.java。现在，我的微调器是自动选择的，这意味着，当我加载页面时，它会自动为我选择“六月”。有没有办法让我禁用自动选择？

这是我的代码

String [] months = {
                "June",
                "July",
                "August",
                "Septemeber",
                "November",
                "December",

我的 date.java 的一部分

//SpinnerView
            s1 = (Spinner) findViewById(R.id.spinner1);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, months);
        s1.setAdapter(adapter);
        s1.setOnItemSelectedListener(new OnItemSelectedListener()
        {
            public void onItemSelected(AdapterView<?> arg0,View arg1, int arg2, long arg3) {
                int index = s1.getSelectedItemPosition();
                //Toast.makeText(getBaseContext(), "You have seleted item :" + months[index] , Toast.LENGTH_SHORT).show();
            }
            public void onNothingSelected(AdapterView<?>arg0) {}
            });


    if ( s1.equals("August")) {

        startActivity(new Intent(date.this,MainActivity.class));
    }
    else{
        startActivity(new Intent(date.this,august
                .class));

    }

Answer 1

试试这个:

添加数组，如“选择月份”、“六月”、“七月”、“八月”、“九月”、“十月”、“十一月”、“十二月”

并 checkin

s1.setOnItemSelectedListener(new OnItemSelectedListener()
        {
            public void onItemSelected(AdapterView<?> arg0,View arg1, int arg2, long arg3) {
                int index = s1.getSelectedItemPosition();
                if(index>0)
                {
                             String Month = MonthArray[index];
                    if ( Month.equalIgnoreCase("August")) {

                        startActivity(new Intent(date.this,MainActivity.class));
                    }
                    else{
                        startActivity(new Intent(date.this,august
                                .class));

                    }
                }
            }
            public void onNothingSelected(AdapterView<?>arg0) {}
        });

希望有帮助!!