如何正确使用微调

Question

我有一些项目（串）在我的微调，当我选择这些项目中的一个，我想回一个相关的值，例如：

如果我选择SAE 1020，它返回me 250.0 如果我选择E-155，它会返回我300.0

该值被显示在EditText中，但我看到的唯一值是250.0。 毕竟，这个值应该发送到下一个Activity（我也不知道我是否正确地进行了传输）。

发生了什么事？我能做什么？

代码：

package com.mateus.ligacoestubulares; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Spinner; 

public class Dados extends AppCompatActivity { 

String [] AçoMontante = {"SAE 1020", "E-155"}; 
String [] AçoBanzo = {"SAE 1020", "E-155"}; 
String [] EspessuraT1 = {"0,75 mm", "0,90 mm", "0,95 mm"}; 
String [] EspessuraTo = {"0,75 mm", "0,90 mm", "0,95 mm"}; 
EditText campoFy1; 
EditText campoFyo; 
EditText campoT1; 
EditText campoTo; 
EditText normalM; 
EditText normalB; 
EditText momentoB; 
EditText teta; 
Button next; 
Intent intentNext; 
Bundle bundle; 

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

    Spinner spinnerMont = (Spinner) findViewById(R.id.spinnerM); 

    ArrayAdapter<String> arrayAdapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, AçoMontante); 
    spinnerMont.setAdapter(arrayAdapter1); 

    campoFy1 = (EditText) findViewById(R.id.fy1); 

    String montStr = spinnerMont.getSelectedItem().toString(); 

    String fy1 = Double.toString(choiceM(montStr)); 

    campoFy1.setText(fy1); 

    Spinner spinnerBanzo = (Spinner) findViewById(R.id.spinnerB); 

    ArrayAdapter<String> arrayAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, AçoBanzo); 
    spinnerBanzo.setAdapter(arrayAdapter2); 

    campoFyo = (EditText) findViewById(R.id.fyo); 

    String banzoStr = spinnerBanzo.getSelectedItem().toString(); 

    String fyo = Double.toString(choiceB(banzoStr)); 

    campoFyo.setText(fyo); 


    next = (Button) findViewById(R.id.prosseguir); 
    intentNext = new Intent(Dados.this, ConferenciaDosDados.class); 

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

      String resistenciaM = campoFy1.getText().toString(); 
      String resistenciaB = campoFyo.getText().toString(); 
      bundle.putString("fy1",resistenciaM); 
      bundle.putString("fyo",resistenciaB); 
      intentNext.putExtras(bundle); 
      startActivity(intentNext); 

     } 
    }); 
} 

public double choiceM(String str) { 

    Double f1 = 0.0; 

    if (str.equals(AçoMontante[0])) { 
     f1 = 250.0; 
    } else if (str.equals(AçoMontante[1])) { 
     f1 = 300.0; 
    } 
    return f1; 
} 

public double choiceB(String str) { 

    Double fo = 0.0; 

    if (str.equals(AçoMontante[0])) { 
     fo = 250.0; 
    } else if (str.equals(AçoMontante[1])) { 
     fo = 300.0; 
    } 
    return fo; 
} 
} 

Answer 1

试试这个。此代码正在按照您的要求工作。

 String [] AçoMontante = {"SAE 1020", "E-155"}; 
     String [] AçoBanzo = {"SAE 1020", "E-155"}; 
     String [] EspessuraT1 = {"0,75 mm", "0,90 mm", "0,95 mm"}; 
     String [] EspessuraTo = {"0,75 mm", "0,90 mm", "0,95 mm"}; 
     EditText campoFy1; 
     EditText campoFyo; 
     Button next; 
     Intent intentNext; 
     Bundle bundle; 
     String montStr,banzoStr, f1,fo; 
     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_main); 
      campoFy1 = (EditText) findViewById(R.id.fy1); 
      campoFyo = (EditText) findViewById(R.id.fyo); 
      Spinner spinnerMont = (Spinner) findViewById(R.id.spinnerM); 
      Spinner spinnerBanzo = (Spinner) findViewById(R.id.spinnerB); 
      ArrayAdapter<String> arrayAdapter1 = new ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line, AçoMontante); 
      ArrayAdapter<String> arrayAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, AçoBanzo); 
      spinnerMont.setAdapter(arrayAdapter1); 
      spinnerBanzo.setAdapter(arrayAdapter2); 
      spinnerMont.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
       @Override 
       public void onItemSelected(AdapterView<?> parent, View view, int i, long l) { 
        montStr = (String) parent.getItemAtPosition(i); 
        if(montStr == "SAE 1020"){ 
         f1 = "250.0"; 
        } 
        else if (montStr == "E-155"){ 
         f1 = "300.0"; 
        } 
        else{} 
        campoFy1.setText(f1); 
       } 
       @Override 
       public void onNothingSelected(AdapterView<?> arg0) { 

       } 
      }); 


      spinnerBanzo.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
       @Override 
       public void onItemSelected(AdapterView<?> parent, View view, int i, long l) { 
        banzoStr = (String) parent.getItemAtPosition(i); 
        if(banzoStr == "SAE 1020"){ 
         fo = "250.0"; 
        } 
        else if (banzoStr == "E-155"){ 
         fo = "300.0"; 
        } 
        else{} 
        campoFyo.setText(fo); 
       } 
       @Override 
       public void onNothingSelected(AdapterView<?> arg0) { 

       } 
      }); 


      next = (Button) findViewById(R.id.prosseguir); 
      intentNext = new Intent(MainActivity.this, Second.class); 

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

        String resistenciaM = campoFy1.getText().toString(); 
        String resistenciaB = campoFyo.getText().toString(); 
        bundle.putString("fy1",resistenciaM); 
        bundle.putString("fyo",resistenciaB); 
        intentNext.putExtras(bundle); 
        startActivity(intentNext); 

       } 
      }); 

     } 

另外，您可以使用私有静态变量来传递值，而不是捆绑包。
设置f1和fo作为

private static String f1,fo;而不是String f1,fo;。
并在另一个活动中称为Dados.f1或Dados.fo [此处为您当前活动的Dados]