如果条件在Spinner下拉列表中

Question

我使用spinner做了一个下拉列表，但现在我想在选择某个值时显示一个特定的消息，同时在输入某个关键词时显示一个EditText。我尝试使用if条件，但没有成功。场景是这样的。当用户输入他们的 age 18岁以上，并从下拉菜单中选择 "是"。hire，会出现一定的信息，这两个条件必须满足

 public void stan(View hiring){
        ArrayAdapter<CharSequence> hire=ArrayAdapter.createFromResource(this,R.array.decide, android.R.layout.simple_spinner_item);
        hire.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(hire);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                String decide =spinner.getSelectedItem().toString()
            }
            @Override
            public void onNothingSelected(AdapterView<?> parent) {
            }
        });
        int age= Integer.parseInt(aged.getText().toString());
        if(age>18 && spinner.equals("Yes")){
            Toast.makeText(this,"Ok, go eat cabbage sauce",Toast.LENGTH_LONG).show();
        }else{
            Toast.makeText(this,"no",Toast.LENGTH_LONG).show();
        }

Answer 1

试试这个

public void stan(View hiring){
        ArrayAdapter<CharSequence> hire=ArrayAdapter.createFromResource(this,R.array.decide, android.R.layout.simple_spinner_item);
        hire.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(hire);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                String decide =spinner.getSelectedItem().toString();
                int age= Integer.parseInt(aged.getText().toString());
                if(age>18 && decide.equals("Yes")){
                Toast.makeText(this,"Ok, go eat cabbage sauce",Toast.LENGTH_LONG).show();
                }else{
                Toast.makeText(this,"no",Toast.LENGTH_LONG).show();
                }
            }
            @Override
            public void onNothingSelected(AdapterView<?> parent) {
            }
        });

Answer 2

使用 spinner.getSelectedItem().toString()

最后，您的条件将是

if(age>18 && spinner.getSelectedItem().toString().equals("Yes")){
             Toast.makeText(YourActivityName.this,"Ok, go eat cabbage sauce",Toast.LENGTH_LONG).show();
            }else{
             Toast.makeText(YourActivityName.this,"no",Toast.LENGTH_LONG).show();
            }