2016-11-27 244 views
0

以下是我正在嘗試執行的操作: 我有2個活動,一個MainActivity和一個SettingsActivity,它通過單擊MA中的按鈕打開。在SA中,有6個單選按鈕,每個按鈕在收音機組中都有相應的顏色ID(如if/else語句中所示)以及用於關閉該活動的按鈕。當用戶按下關閉按鈕時,MA的背景將變爲用戶選擇的顏色。除了getCheckedRadioButtonId()方法獲取創建SettingsActivity時選擇的按鈕的ID(無)之外,一切運行良好,因此顯示的顏色總是最後一個else塊中的顏色。我知道這應該是一個非常簡單的修復,但我花了大約4個小時嘗試我能想到的每個解決方案,並且我的許多谷歌搜索都沒有得到任何有用的東西。以下是相關代碼:單擊按鈕時獲取所選單選按鈕的編號

SettingsActivity.java:

public class SettingsActivity extends AppCompatActivity {         

    public static final String colorID = "colorID";           

    @Override                    
    protected void onCreate(Bundle savedInstanceState) {         
     super.onCreate(savedInstanceState);             
     setContentView(R.layout.activity_settings);           
     LayoutInflater inflater = LayoutInflater.from(SettingsActivity.this);    
     View settingsView= inflater.inflate(R.layout.activity_settings, null);    

    returnToMain();                                                          
    }                      

    public int getColorValueID(View view) {             

     final int colorId;                 
      int id;                   

     final RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.radioGroup);  

       if(radioGroup.getCheckedRadioButtonId()!= -1) {        
        id = radioGroup.getCheckedRadioButtonId();        
       }                   
       else {                  
        id = 0;                 
       }                   

     if (id == R.id.redButton) {               

      colorId = R.color.red_theme;             

     } else if (id == R.id.blueButton) {             

      colorId = R.color.blue_theme;             

     } else if (id == R.id.greenButton) {            

      colorId = R.color.green_theme;             

     } else if (id == R.id.orangeButton) {            

      colorId = R.color.orange_theme;             

     } else if (id == R.id.purpleButton) {            

      colorId = R.color.purple_theme;             

     } else {                   

      colorId = R.color.blue_theme;             

     }                     

     return colorId;                  
    }                      

    public void returnToMain(){                
     Button returnButton = (Button) findViewById(R.id.backToMain);      

     returnButton.setOnClickListener(new View.OnClickListener() {      
      @Override                  
      public void onClick(View view) {            
       LayoutInflater inflater = LayoutInflater.from(SettingsActivity.this);  
       View settingsView= inflater.inflate(R.layout.activity_settings, null);  

       int color = getColorValueID(settingsView);         
       final Intent mIntent = new Intent();          
       mIntent.putExtra(colorID, color);           
       setResult(RESULT_OK, mIntent);            
       finish();                 
      }                    
     });                     
    }                                            
}        

activity_settings.xml:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/activity_settings" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.example.rileybolen.simplemortgagecalculator.SettingsActivity" 
    tools:background="#dedede"> 

    <TextView 
     android:text="@string/settings" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:id="@+id/settingsHeading" 
     android:textColor="#494949" 
     android:textSize="32sp" 
     android:textAlignment="center" 
     /> 

    <RadioGroup 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/themeHeading" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="10dp" 
     android:id="@+id/radioGroup"> 

       <RadioButton 
        android:text="Orange" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/orangeButton" 
        android:layout_alignParentTop="true" 
        android:textColor="@color/orange_theme" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp" 
        /> 

       <RadioButton 
        android:text="Purple" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/purpleButton" 
        android:layout_below="@id/orangeButton" 
        android:textColor="@color/purple_theme" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp"/> 

       <RadioButton 
        android:text="Grey" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/greyButton" 
        android:layout_below="@id/purpleButton" 
        android:textColor="#494949" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp"/> 


       <RadioButton 
        android:text="Red" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/redButton" 
        android:layout_alignParentTop="true" 
        android:textColor="@color/red_theme" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp"/> 

       <RadioButton 
        android:text="Blue" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/blueButton" 
        android:layout_below="@id/redButton" 
        android:textColor="@color/blue_theme" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp"/> 

       <RadioButton 
        android:text="Green" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/greenButton" 
        android:layout_below="@id/blueButton" 
        android:textColor="@color/green_theme" 
        android:textSize="18sp" 
        android:layout_marginLeft="20dp"/> 


    </RadioGroup> 

    <TextView 
     android:text="@string/theme_heading" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="28dp" 
     android:id="@+id/themeHeading" 
     android:textColor="#494949" 
     android:textSize="24sp" 
     android:layout_below="@+id/settingsHeading" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true"/> 



     <Button 
      android:text="Close" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/backToMain" 
      android:layout_alignParentBottom="true" 
      /> 


</RelativeLayout> 

回答

0

RadioGroup

註冊一個 onCheckedChanged(RadioGroup group, int checkedId)監聽器

類似的東西..

+0

我試着用其中的一個,但它沒有爲我工作,因爲ID必須提供給returnToMain方法,當我分配checkedId int變量也只是內部可用監聽器。我也試過在監聽器裏調用returnToMain並傳入checkedId,但那也不起作用。 –

+0

在監聽器中放置烤麪包,並切換單選按鈕以確保其觸發。另外,在你的聲明中,在類中聲明一個int作爲字段變量,並將偵聽器中的checkedID分配給該變量 – BiGGZ

+0

創建一個int字段變量起作用!我在onCreate上面創建了private int mColor,然後將它設置爲onCreate中的偵聽器中的checkedId,然後將getColorValueId設置爲int並在mColor中傳入,當我在returnToMain中調用它時。謝謝! –

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