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首页 > 解决方案 > 如何将微调器选择的值传递给同一活动中的 onCreate() 部分？

android - 如何将微调器选择的值传递给同一活动中的 onCreate() 部分？

问题描述

我想制作一个基于一些 Edittexts 和两个微调器收集数据的应用程序。然后，通过单击按钮在 TextView 中显示所有字符串数据。我知道这可能很简单，但我想知道如何在微调器中获取所选项目并将它们显示在其余值附近。'''

Spinner shift, permit;

EditText TextHere, TrainNumber, SignalPerson, NavganPerson, DriverPerson;

TextView BigText;

Button SaveButton;

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

    shift=(Spinner)findViewById(R.id.shift_spinner);
    permit=(Spinner)findViewById(R.id.permission_spinner);
    TextHere=(EditText)findViewById(R.id.text_here);
    TrainNumber=(EditText)findViewById(R.id.train_number);
    SignalPerson=(EditText)findViewById(R.id.signal_person);
    NavganPerson=(EditText)findViewById(R.id.navgan_person);
    DriverPerson=(EditText)findViewById(R.id.driver_person);
    SaveButton=(Button) findViewById(R.id.save_btn);
    BigText=(TextView)findViewById(R.id.text_text);

    ArrayAdapter ShiftSelect = ArrayAdapter.createFromResource(
            this,
            R.array.shifts,
            R.layout.support_simple_spinner_dropdown_item
    );
    shift.setAdapter(ShiftSelect);
    shift.setOnItemSelectedListener(this);

    ArrayAdapter PermissionSelect = ArrayAdapter.createFromResource(
            this,
            R.array.permissions,
            R.layout.support_simple_spinner_dropdown_item
    );
    permit.setAdapter(PermissionSelect);
    permit.setOnItemSelectedListener(this);

    final String TN = TrainNumber.getText().toString();

    final String TH = TextHere.getText().toString();

    final String SP = SignalPerson.getText().toString();

    final String NP = NavganPerson.getText().toString();

    final String DP = DriverPerson.getText().toString();

    SaveButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

        }
    });

}


@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

    Spinner spinner = (Spinner) parent;

    if (spinner.getId()==R.id.shift_spinner){
        String SHIFT = parent.getSelectedItem().toString();
    }
    if (spinner.getId()==R.id.permission_spinner){
        String PER = parent.getSelectedItem().toString();
    }
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
}

'''

我想将从public void onItemSelected中选择的项目传递给 onCreate 方法部分以在 txetview 中显示它。谢谢。

标签： androidspinneroncreate

解决方案

我希望这是你要求的 

Spinner shift, permit;

EditText TextHere, TrainNumber, SignalPerson, NavganPerson, DriverPerson;

TextView BigText;

Button SaveButton;
String SHIFT,PER;

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

    shift=(Spinner)findViewById(R.id.shift_spinner);
    permit=(Spinner)findViewById(R.id.permission_spinner);
    TextHere=(EditText)findViewById(R.id.text_here);
    TrainNumber=(EditText)findViewById(R.id.train_number);
    SignalPerson=(EditText)findViewById(R.id.signal_person);
    NavganPerson=(EditText)findViewById(R.id.navgan_person);
    DriverPerson=(EditText)findViewById(R.id.driver_person);
    SaveButton=(Button) findViewById(R.id.save_btn);
    BigText=(TextView)findViewById(R.id.text_text);

    ArrayAdapter ShiftSelect = ArrayAdapter.createFromResource(
            this,
            R.array.shifts,
            R.layout.support_simple_spinner_dropdown_item
    );
    shift.setAdapter(ShiftSelect);
    shift.setOnItemSelectedListener(this);

    ArrayAdapter PermissionSelect = ArrayAdapter.createFromResource(
            this,
            R.array.permissions,
            R.layout.support_simple_spinner_dropdown_item
    );
    permit.setAdapter(PermissionSelect);
    permit.setOnItemSelectedListener(this);

    final String TN = TrainNumber.getText().toString();

    final String TH = TextHere.getText().toString();

    final String SP = SignalPerson.getText().toString();

    final String NP = NavganPerson.getText().toString();

    final String DP = DriverPerson.getText().toString();

    SaveButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            BigText.setText(SHIFT+" "+PER);
        }
    });

}

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

    Spinner spinner = (Spinner) parent;

    if (spinner.getId()==R.id.shift_spinner){
        SHIFT = parent.getSelectedItem().toString();
    }
    if (spinner.getId()==R.id.permission_spinner){
        PER = parent.getSelectedItem().toString();
    }
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
}

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