アクティビティ全体でのint値とdouble値の転送

Question

こんにちは私は、if elseステートメントと変数の値に基づいて計算を行うために、単一のアクティビティで変数値を転送する際に問題があります。

private EditText edittext1; 
private TextView option1, option2, option3, option4, option5, 
       option6, option7, option8, option9, option10, 
       output1, output2, output3, output4, output5, 
       output6, output7, output8, output9, output10, 
       textview16; 
private int unitGroup, calculate; 
String meter, squareMeter, centimeter; 

double doubleInput, out1; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.converter);  

    ActionBar bar = getActionBar(); 
    bar.setDisplayHomeAsUpEnabled(true); 

    Spinner spinner = (Spinner) findViewById(R.id.converter); 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
      this, R.array.convert_array, android.R.layout.simple_spinner_item); 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinner.setAdapter(adapter); 

    final Spinner spinner1 = (Spinner) findViewById(R.id.spinner1); 
    final ArrayAdapter<CharSequence> length = ArrayAdapter.createFromResource(
      this, R.array.length_array, android.R.layout.simple_spinner_item); 
    length.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    final ArrayAdapter<CharSequence> area = ArrayAdapter.createFromResource(
      this, R.array.area_array, android.R.layout.simple_spinner_item); 
    area.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 

    edittext1 = (EditText)findViewById(R.id.editText1); 
    textview16 = (TextView)findViewById(R.id.TextView16); 

    // Get unit option textview's 
    option1 = (TextView)findViewById(R.id.option1); 
    option2 = (TextView)findViewById(R.id.option2); 
    option3 = (TextView)findViewById(R.id.option3); 
    option4 = (TextView)findViewById(R.id.option4); 
    option5 = (TextView)findViewById(R.id.option5); 
    option6 = (TextView)findViewById(R.id.option6); 
    option7 = (TextView)findViewById(R.id.option7); 
    option8 = (TextView)findViewById(R.id.option8); 
    option9 = (TextView)findViewById(R.id.option9); 
    option10 = (TextView)findViewById(R.id.option10); 

    // Get unit output textview's  
    output1 = (TextView)findViewById(R.id.output1); 
    output2 = (TextView)findViewById(R.id.output2); 
    output3 = (TextView)findViewById(R.id.output3); 
    output4 = (TextView)findViewById(R.id.output4); 
    output5 = (TextView)findViewById(R.id.output5); 
    output6 = (TextView)findViewById(R.id.output6); 
    output7 = (TextView)findViewById(R.id.output7); 
    output8 = (TextView)findViewById(R.id.output8); 
    output9 = (TextView)findViewById(R.id.output9); 
    output10 = (TextView)findViewById(R.id.output10); 



    spinner.setOnItemSelectedListener(new OnItemSelectedListener() { 
     public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
      if(pos==0) {    
       spinner1.setAdapter(length); 
       option1.setText("Meter"); 
       option2.setText("Centimeter"); 
       option3.setText("Millimeter"); 
       option4.setText("Kilometer"); 
       option5.setText("Inch"); 
       option6.setText("Foot"); 
       option7.setText("Yard"); 
       option8.setText("Mile"); 
       option9.setText("Astronomical Unit (AU)"); 
       option10.setText("Lightyear"); 
       unitGroup = 1; 
      } 
      if(pos==1) {    
       spinner1.setAdapter(area); 
       option1.setText("Square Meter"); 
       option2.setText("Square Centimeter"); 
       option3.setText("Square Millimeter"); 
       option4.setText("Square Kilometer"); 
       option5.setText("Square Inch"); 
       option6.setText("Square Foot"); 
       option7.setText("Square Yard"); 
       option8.setText("Square Mile"); 
       option9.setText("Acre"); 
       option10.setText("Hectare"); 
       unitGroup = 2; 
      }    
     } 

     public void onNothingSelected(AdapterView<?> parent) { 
      // Do nothing. 
     } 
    }); 

    spinner1.setOnItemSelectedListener(new OnItemSelectedListener() { 
     public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
      switch(pos) { 
      case 0: 
       if (unitGroup == 1) { 
        calculate = 0; 
       } 
       if (unitGroup == 2) { 
        calculate = 0; 
       } 
       return; 
      case 1: 
       if (unitGroup == 1) { 
        calculate = 1; 
       } 
       if (unitGroup == 2) { 
        calculate = 1; 
       } 
       return; 
      default: 
      } 
     }   

     public void onNothingSelected(AdapterView<?> parent) { 
      // Do nothing. 
     } 
    }); 

    String stringInput = (edittext1.getText().toString()); 
    if(stringInput.isEmpty()) { 
     doubleInput = 0.0; 
    } 
    else { 
     doubleInput = Double.parseDouble(edittext1.getText().toString()); 
    } 

    textview16.setText("" + unitGroup); 

    if (calculate == 0) { 
     out1 = doubleInput * 1; 
    } 
    output1.setText("" + out1); 

    if (calculate == 1) { 
     out1 = doubleInput * 100; 
    } 
    output2.setText("" + out1); 
} 

私が何を試しても、0または0.0として表示されます。変数情報が転送されないこととは何か？

Answer 1

リスナーで入力を読んでいないようです。ビューを作成してからリスナーを作成し、onCreateのままでedittext1のテキストを読んでください。ユーザーがそのフィールドとやりとりできるようになった後にそのフィールドから読み取る場合は、リスナーでedittext1の値を読み取る必要があります。