基于编辑文本输入的微调器值

Question

我创建了一个编辑文本和一个微调器，在微调器中，有多个选择，它们是永久的和临时的。如果我在编辑文本中输入“品牌”，那么在微调器中它应该只显示永久不显示临时但如果我输入任何其他单词它应该显示永久或临时

我试过如果我输入整数然后它返回月份名称。 例如：如果我输入 6，那么在微调器中它会显示六月。

主要活动代码

        edit = (EditText) findViewById(R.id.editText);
        spinner = (Spinner) findViewById(R.id.spinner);

        String[] months = new DateFormatSymbols().getMonths();


        ArrayAdapter adapter = new ArrayAdapter<String>(this, 
        android.R.layout.simple_spinner_item,months);

        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);

        spinner.setOnItemSelectedListener(new 
        AdapterView.OnItemSelectedListener()
        {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, 
            int position, long id)
            {
                edit.setText(String.valueOf(position + 1));
            }


        });

        edit.addTextChangedListener(new TextWatcher()
        {

            @Override
            public void afterTextChanged(Editable s)
            {
                try
                {

                  int nPosition = Integer.parseInt(s.toString());
                    if (nPosition >= 1 && nPosition <= 12)
                    {
                        spinner.setSelection(nPosition - 1);
                    }
                }
                catch(NumberFormatException nfe)
                {

                }
            }
        });

Answer 1

试试这个……

public class Main2Activity extends AppCompatActivity {

Spinner sp1;

ArrayAdapter<String> sAdapter1;
ArrayAdapter<String> sAdapter2;
String s1[] = {"Permanent"};
String s2[] = {"Permanent", "Temporary"};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);

    sp1 = (Spinner) findViewById(R.id.spinner1);
    EditText et = (EditText) findViewById(R.id.editText1);

    sAdapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, s1);
    sAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    sAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, s2);
    sAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    et.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void afterTextChanged(Editable editable) {
            if (editable.toString().equals("Brand")) {
                sp1.setAdapter(sAdapter1);
            } else {
                sp1.setAdapter(sAdapter2);
            }
        }
    });

}
}

Answer 2

创建两个数组

String[] array1 = new String[]{"Permanent"};
String[] array2 = new String[]{"Permanent", "Temporary"};

现在，在 EditText textChanged 侦听器上根据您的条件使用合适的数组初始化微调器适配器

edit.addTextChangedListener(new TextWatcher(){

            @Override
            public void afterTextChanged(Editable s)
            {
                if(s.toString.equals("BRAND")){
                    spinnerAdapter = new ArrayAdapter(context, android.R.layout.simple_spinner_item, array1)
                }else{
                    spinnerAdapter = new ArrayAdapter(context, android.R.layout.simple_spinner_item, array2)
                }
                spinner.setAdapter(spinnerAdapter);
            }
        });