为什么EditText（setOutput）没有显示输出？

Question

我正在尝试转换来自EditText getInput的输入并将输出设置为EditText setOutput，但setOutput未显示结果的单位。我不明白为什么。

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

    final EditText getInput = (EditText) findViewById(R.id.input);
    final EditText setOutput = (EditText) findViewById(R.id.output);

    Button convert = (Button) findViewById(R.id.button);

    double factor;


    final String units [] = {
            "Centimeter",
            "Metres",
            "Kilometres",
            "Feet"
    };

    final Spinner unitsSpinner = (Spinner) findViewById(R.id.out);
    final Spinner unitsSpinner1 = (Spinner) findViewById(R.id.in);



    ArrayAdapter<String> A = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_dropdown_item,
            units);

    unitsSpinner.setAdapter(A);

    unitsSpinner1.setAdapter(A);



    convert.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {


            int position = unitsSpinner.getSelectedItemPosition();
            int position2 = unitsSpinner1.getSelectedItemPosition();

            double inputValue = Double.valueOf(getInput.getText().toString());

            double outputValue;


            if (position == 0 && position2 == 1){

                outputValue = inputValue * 0.01;

                String output = Double.toString(outputValue);

                setOutput.setText(output);


            }

            if (position == 0 && position2 == 2){

                outputValue = inputValue * 0.001;

                String output = Double.toString(outputValue);

                setOutput.setText(output);


            }

            if (position == 0 && position2 == 3){

                outputValue = inputValue * 0.032;

                String output = Double.toString(outputValue);

                setOutput.setText(output);


            }

        }
    });

}

Answer 1

试用此代码

convert.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        int position = unitsSpinner.getSelectedItemPosition();
        int position2 = unitsSpinner1.getSelectedItemPosition();

        double outputValue;
        double inputValue = Double.parseDouble(getInput.getText().toString());

        if (position == 0 && position2 == 1){
            outputValue = inputValue * 0.01;
        }

        if (position == 0 && position2 == 2){
            outputValue = inputValue * 0.001;
        }

        if (position == 0 && position2 == 3){
            outputValue = inputValue * 0.032;
        }

        String output = Double.toString(outputValue);
        setOutput.setText(output);

    }
});