我很喜歡這裏。需要一些幫助來添加EditText上的值

-4

我已在我的佈局中添加了微調框。我只是想添加的EditText值（無鹼基，AHRA & ACA）和顯示效果上的TextView agross與計算按鈕點擊我怎樣才能把java代碼這個???我知道如何創建簡單的計算器，但與這些微調代碼我很困惑，如果我鍵入代碼onButtonClick方法在主類中它不起作用。我猜的東西需要因爲微調要做碼我很喜歡這裏。需要一些幫助來添加EditText上的值

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; 
import android.widget.TextView; 

public class MainActivity extends AppCompatActivity { 

    EditText abasic, ahra, aca, lopfd, lophd, la; 
    TextView ebasic, ehra, eca, agross, egross, loprs, hdrs, lars, td, spd, eepf, erpf, tpf, eeesi, eresi, tesi, pfesi; 
    Button calculate; 

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

     String[] months = {"Select a month", "January", "February", "February(Leap Year)", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; 

     ArrayAdapter<String> monthadapter = new 
       ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, months); 

     Spinner dropdown = (Spinner) findViewById(R.id.month); 
     dropdown.setAdapter((monthadapter)); 
    } 
}

預先感謝您

來源

2017-08-13 Iboy

訪問值，轉換爲int ，將它們相加，然後分配給其他文本視圖。你嘗試過什麼嗎？ –

如何以及在哪裏可以放碼？高於Spinner或低於Spinner？我想用該按鈕創建OnButtonclick方法。你可以給我的代碼？ – Iboy

在添加Button click listener的'onCreate（）'方法的哪個位置無關緊要。只需在佈局中找到按ID的按鈕後放置即可。 –

嘗試使用setOnClickListener聽單擊事件

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; 
import android.widget.TextView; 

public class MainActivity extends AppCompatActivity { 

    EditText abasic, ahra, aca, lopfd, lophd, la; 
    TextView ebasic, ehra, eca, agross, egross, loprs, hdrs, lars, td, spd, eepf, erpf, tpf, eeesi, eresi, tesi, pfesi; 
    Button calculate; 

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

     String[] months = {"Select a month", "January", "February", "February(Leap Year)", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; 

     ArrayAdapter<String> monthadapter = new 
       ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, months); 

     Spinner dropdown = (Spinner) findViewById(R.id.month); 
     dropdown.setAdapter((monthadapter)); 


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

     calculate.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       // Do your calculation 
      } 
     }); 
    } 
}

來源

2017-08-13 03:40:44 Wesley

我很喜歡這裏。需要一些幫助來添加EditText上的值

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