popolare stringhe listview con risultato conversione

[birbantello85]

Ciao a tutti!
Non so se sia la sezione giusta ma sto provando a creare un'app di conversione unità e mi sono imbattuto in un problema che non riesco proprio a risolvere: praticamente in una activity vorrei inserire una listview le cui stringhe vengano popolate ognuna con una risultato diverso proveniente dalla conversione;
esempio: decido di convertire i CELSIUS in FAHRENHEIT/KELVIN/RANKINE; vorrei che ogni stringa riportasse: FAHRENHEIT: + risultato conversione; idem per KELVIN e RANKINE.
Nel codice che riporto qui sotto ho usato delle normali textview per visualizzare il risultato. Io vorrei sostituirle però con una listview e sostituire ai radiobutton uno spinner.

import android.app.Activity;<br /> import android.os.Bundle;<br /> import android.view.View;<br /> import android.widget.EditText;<br /> import android.widget.<span class="forTooltip">Radio</span>Button;<br /> import android.widget.TextView;<br /> import android.widget.Toast;<br /> <br /> public class TemperaturaActivity exten<span class="forTooltip">ds</span> Activity {<br /> <br /> private EditText text;<br /> private TextView resultCelsiusText, resultFahrenheitText, resultKelvinText, resultRankineText;<br /> <br /> <br /> /** Called when the activity is first created. */ <br /> @Override <br /> public void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.activity_temperatura);<br /> setTitle("Temperatura");<br /> <br /> text = (EditText)findViewById(R.id.editText1);<br /> resultCelsiusText = (TextView) findViewById(R.id.resultCelsiusText);<br /> resultFahrenheitText = (TextView) findViewById(R.id.resultFahrenheitText);<br /> resultKelvinText = (TextView) findViewById(R.id.resultKelvinText);<br /> resultRankineText = (TextView) findViewById(R.id.resultRankineText);<br /> }<br /> <br /> <br /> public void converti (View view) {<br /> switch (view.getId()) {<br /> case R.id.converti:<br /> RadioButton celsiusButton = (<span class="forTooltip">Radio</span>Button) findViewById(R.id.celsiusButton);<br /> RadioButton fahrenheitButton = (RadioButton) findViewById(R.id.fahrenheitButton);<br /> RadioButton kelvinButton = (RadioButton) findViewById(R.id.kelvinButton);<br /> RadioButton rankineButton = (RadioButton) findViewById(R.id.rankineButton);<br /> <br /> if (text.getText().length() == 0) {<br /> Toast.makeText(this, "Non puoi lasciare il campo vu<span class="forTooltip">ot</span>o", Toast.LENGTH_LONG).show();<br /> return;<br /> }<br /> <br /> float inputValue = Float.parseFloat(text.getText().toString());<br /> if (celsiusButton.isChecked()) {<br /> resultCelsiusText.setText(String.valueOf(inputValue) + "°C");<br /> resultFahrenheitText.setText(String.valueOf(convertCelsiusToFahrenheit(inputValue)) + "°F");<br /> resultKelvinText.setText(String.valueOf(convertCelsiusToKelvin(inputValue)) + "°K");<br /> resultRankineText.setText(String.valueOf(convertCelsiusToRankine(inputValue)) + "°R");<br /> <br /> } else if (fahrenheitButton.isChecked()) {<br /> resultCelsiusText.setText(String.valueOf(convertFahrenheitToCelsius(inputValue)) + "°C");<br /> resultFahrenheitText.setText(String.valueOf(inputValue) + "°F");<br /> resultKelvinText.setText(String.valueOf(convertFahrenheitToKelvin(inputValue)) + "°K");<br /> resultRankineText.setText(String.valueOf(convertFahrenheitToRankine(inputValue)) + "°R");<br /> <br /> } else if (kelvinButton.isChecked()) {<br /> resultCelsiusText.setText(String.valueOf(convertKelvinToCelsius(inputValue)) + "°C");<br /> resultFahrenheitText.setText(String.valueOf(convertKelvinToFahrenheit(inputValue)) + "°F");<br /> resultKelvinText.setText(String.valueOf(inputValue) + "°K");<br /> resultRankineText.setText(String.valueOf(convertKelvinToRankine(inputValue)) + "°R");<br /> <br /> } else if (rankineButton.isChecked()) {<br /> resultCelsiusText.setText(String.valueOf(convertRankineToCelsius(inputValue)) + "°C");<br /> resultFahrenheitText.setText(String.valueOf(convertRankineToFahrenheit(inputValue)) + "°F");<br /> resultKelvinText.setText(String.valueOf(convertRankineToKelvin(inputValue)) + "°K");<br /> resultRankineText.setText(String.valueOf(inputValue) + "°R");<br /> }<br /> break;<br /> }<br /> }<br /> <br /> // conversione in celsius<br /> <br /> private float convertFahrenheitToCelsius(float fahrenheit) <br /> {<br /> return ((fahrenheit - 32) * 5 / 9); <br /> } <br /> <br /> private float convertKelvinToCelsius(float kelvin) <br /> {<br /> return (float) (kelvin - 273.15); <br /> }<br /> <br /> private float convertRankineToCelsius(float rankin) <br /> {<br /> return (float) (((rankin - 491.67)*5) / 9); <br /> }<br /> <br /> // conversione in fahrenheit <br /> private float convertCelsiusToFahrenheit(float celsius) <br /> {<br /> return ((celsius * 9) / 5) + 32; <br /> }<br /> <br /> private float convertKelvinToFahrenheit(float kelvin) <br /> {<br /> return (float) (((kelvin * 9) / 5) - 459.67); <br /> }<br /> <br /> private float convertRankineToFahrenheit(float rankin) <br /> {<br /> return (float) (rankin - 459.67); <br /> }<br /> <br /> // conversione in kelvin <br /> private float convertCelsiusToKelvin(float celsius) <br /> {<br /> return (float) (celsius + 273.15); <br /> }<br /> <br /> private float convertFahrenheitToKelvin(float fahrenheit) <br /> {<br /> return (float) (((fahrenheit+ 459.67) * 5) / 9); <br /> }<br /> <br /> private float convertRankineToKelvin(float rankin) <br /> {<br /> return (float) ((rankin* 5) / 9); <br /> }<br /> <br /> // conversione in rankine<br /> private float convertCelsiusToRankine(float celsius) <br /> {<br /> return (float) (((celsius *9) / 5) + 491.67); <br /> }<br /> <br /> private float convertFahrenheitToRankine(float fahrenheit) <br /> {<br /> return (float) (fahrenheit + 459.67); <br /> }<br /> <br /> private float convertKelvinToRankine(float kelvin) <br /> {<br /> return (float) ((kelvin * 9) / 5); <br /> }<br /> }

​x

 

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import android.app.Activity;

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import android.os.Bundle;

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import android.view.View;

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import android.widget.EditText;

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import android.widget.RadioButton;

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import android.widget.TextView;

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import android.widget.Toast;

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​

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public class TemperaturaActivity extends Activity {

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        private EditText text;

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        private TextView resultCelsiusText, resultFahrenheitText, resultKelvinText, resultRankineText;

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        /** Called when the activity is first created. */ 

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        @Override 

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        public void onCreate(Bundle savedInstanceState) {

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                super.onCreate(savedInstanceState);

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                setContentView(R.layout.activity_temperatura);

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                setTitle("Temperatura");

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                text = (EditText)findViewById(R.id.editText1);

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                resultCelsiusText = (TextView) findViewById(R.id.resultCelsiusText);

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                resultFahrenheitText = (TextView) findViewById(R.id.resultFahrenheitText);

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                resultKelvinText = (TextView) findViewById(R.id.resultKelvinText);

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                resultRankineText = (TextView) findViewById(R.id.resultRankineText);

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        }

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        public void converti (View view) {

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            switch (view.getId()) {

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            case R.id.converti:

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              RadioButton celsiusButton = (RadioButton) findViewById(R.id.celsiusButton);

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              RadioButton fahrenheitButton = (RadioButton) findViewById(R.id.fahrenheitButton);

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              RadioButton kelvinButton = (RadioButton) findViewById(R.id.kelvinButton);

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              RadioButton rankineButton = (RadioButton) findViewById(R.id.rankineButton);

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              if (text.getText().length() == 0) {

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                Toast.makeText(this, "Non puoi lasciare il campo vuoto", Toast.LENGTH_LONG).show();

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                return;

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              }

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​

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              float inputValue = Float.parseFloat(text.getText().toString());

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              if (celsiusButton.isChecked()) {

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                  resultCelsiusText.setText(String.valueOf(inputValue) + "°C");

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                  resultFahrenheitText.setText(String.valueOf(convertCelsiusToFahrenheit(inputValue)) + "°F");

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                  resultKelvinText.setText(String.valueOf(convertCelsiusToKelvin(inputValue)) + "°K");

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                  resultRankineText.setText(String.valueOf(convertCelsiusToRankine(inputValue)) + "°R");

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              } else if (fahrenheitButton.isChecked()) {

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                  resultCelsiusText.setText(String.valueOf(convertFahrenheitToCelsius(inputValue)) + "°C");

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                      resultFahrenheitText.setText(String.valueOf(inputValue) + "°F");

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                      resultKelvinText.setText(String.valueOf(convertFahrenheitToKelvin(inputValue)) + "°K");

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                      resultRankineText.setText(String.valueOf(convertFahrenheitToRankine(inputValue)) + "°R");

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              } else if (kelvinButton.isChecked()) {

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                  resultCelsiusText.setText(String.valueOf(convertKelvinToCelsius(inputValue)) + "°C");

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                      resultFahrenheitText.setText(String.valueOf(convertKelvinToFahrenheit(inputValue)) + "°F");

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                      resultKelvinText.setText(String.valueOf(inputValue) + "°K");

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                      resultRankineText.setText(String.valueOf(convertKelvinToRankine(inputValue)) + "°R");

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              } else if (rankineButton.isChecked()) {

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                  resultCelsiusText.setText(String.valueOf(convertRankineToCelsius(inputValue)) + "°C");

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                      resultFahrenheitText.setText(String.valueOf(convertRankineToFahrenheit(inputValue)) + "°F");

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                      resultKelvinText.setText(String.valueOf(convertRankineToKelvin(inputValue)) + "°K");

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                      resultRankineText.setText(String.valueOf(inputValue) + "°R");

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              }

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              break;

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            }

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        }

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        //      conversione in celsius

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        private float convertFahrenheitToCelsius(float fahrenheit) 

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        {

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                return ((fahrenheit - 32) * 5 / 9); 

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        } 

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        private float convertKelvinToCelsius(float kelvin) 

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        {

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                return (float) (kelvin - 273.15); 

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        }

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        private float convertRankineToCelsius(float rankin) 

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        {

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                return (float) (((rankin - 491.67)*5) / 9); 

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        }

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        //      conversione in fahrenheit 

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        private float convertCelsiusToFahrenheit(float celsius) 

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        {

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                return ((celsius * 9) / 5) + 32; 

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        }

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        private float convertKelvinToFahrenheit(float kelvin) 

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        {

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                return (float) (((kelvin * 9) / 5) - 459.67); 

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        }

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        private float convertRankineToFahrenheit(float rankin) 

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        {

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                return (float) (rankin - 459.67); 

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        }

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        //      conversione in kelvin 

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        private float convertCelsiusToKelvin(float celsius) 

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        {

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                return (float) (celsius + 273.15); 

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        }

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        private float convertFahrenheitToKelvin(float fahrenheit) 

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        {

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                return (float) (((fahrenheit+ 459.67) * 5) / 9); 

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        }

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​

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        private float convertRankineToKelvin(float rankin) 

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        {

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                return (float) ((rankin* 5) / 9); 

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        }

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        //      conversione in rankine

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        private float convertCelsiusToRankine(float celsius) 

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        {

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                return (float) (((celsius *9) / 5) + 491.67); 

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        }

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        private float convertFahrenheitToRankine(float fahrenheit) 

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        {

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                return (float) (fahrenheit + 459.67); 

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        }

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​

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        private float convertKelvinToRankine(float kelvin) 

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        {

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                return (float) ((kelvin * 9) / 5); 

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        }

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}

Vi ringrazio.