以編程方式更改Android AlertDialog中的單個項目背景顏色

Question

我試圖在Android應用程序中提供特定顏色的快速選擇，並且希望能夠在簡單對話框中將列表選項設置爲特定顏色。似乎應該很容易，但我一直無法找到直接的答案。

我該如何（以編程方式在運行時）相應地設置每個選項的背景顏色？

Answer 1

感謝您的回覆，夥計們。我已經想通了......

private void showColourChooserDialog(){ 
    final ColourItem[] items = { 
      new ColourItem(Color.RED), 
      new ColourItem(Color.GREEN), 
      new ColourItem(Color.BLUE), 
    };  

    ListAdapter adapter = new ArrayAdapter<ColourItem>(
      this, 
      android.R.layout.select_dialog_item, 
      android.R.id.text1, 
      items){ 
     public View getView(int position, View convertView, ViewGroup parent) { 
      View v = super.getView(position, convertView, parent); 
      TextView tv = (TextView)v.findViewById(android.R.id.text1); 

      int colour = items[position].getColour(); 
      tv.setBackgroundColor(colour); 

      return v; 
     } 
    }; 

    new AlertDialog.Builder(this) 
    .setTitle("Choose Colour") 
    .setAdapter(adapter, new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
      // ... respond to choice here 
     } 
    }).show(); 
} 

的ColourItem類：

public class ColourItem { 
    private String displayString; 
    private int colour; 

    public ColourItem (int colour) { 
     this(colour, ""); 
    } 
    public ColourItem (int colour, String displayString) { 
     this.colour = colour; 
     this.displayString = displayString; 
    } 

    @Override 
    public String toString() { 
     return displayString; 
    } 
    public void setDisplayString(String s){ 
     this.displayString = s; 
    } 

    public int getColour(){ 
     return colour; 
    } 
    public void setColour(int i){ 
     this.colour = i; 
    } 
} 

答案的靈感來自於：This solution regarding custom icons for dialog items

Answer 2

我想這可能是有用的：

private void showAlertDialogForColors() { 
     final AlertDialog.Builder alert = new AlertDialog.Builder(this); 
     LayoutInflater inflater = this.getLayoutInflater(); 
     View alertLayout = inflater.inflate(R.layout.choose_color_theme, null); 
     //alert.setTitle("Theme Color"); 
     // this is set the view from XML inside AlertDialog 
     alert.setView(alertLayout); 
     final Integer tempValue = SessionManager.getInstance(ColorSettingsActivity.this).getPrefThemeCode(); 

     TextView textViewBlue = (TextView) alertLayout.findViewById(R.id.themeColorBlue); 
     TextView textViewOrange = (TextView) alertLayout.findViewById(R.id.themeColorOrange); 
     TextView textViewPink = (TextView) alertLayout.findViewById(R.id.themeColorPink); 
     TextView textViewPurple = (TextView) alertLayout.findViewById(R.id.themeColorPurple); 
     TextView textViewCyan = (TextView) alertLayout.findViewById(R.id.themeColorCyan); 
     TextView textViewDarkGreen = (TextView) alertLayout.findViewById(R.id.themeColorDarkGreen); 
     selectedThemeColor = (TextView) alertLayout.findViewById(R.id.textViewSelectedTheme); 
     selectedThemeColor.setTypeface(font); 

     textViewBlue.setOnClickListener(this); 
     textViewOrange.setOnClickListener(this); 
     textViewPink.setOnClickListener(this); 
     textViewPurple.setOnClickListener(this); 
     textViewCyan.setOnClickListener(this); 
     textViewDarkGreen.setOnClickListener(this); 


     // disallow cancel of AlertDialog on click of back button and outside touch 
     alert.setCancelable(false); 
     alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       SessionManager.getInstance(MessageSettingsActivity.this).setPrefThemeCode(tempValue); 
       Toast.makeText(getBaseContext(), "Cancel clicked", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
     alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       recreate(); 
      } 
     }); 
     AlertDialog dialog = alert.create(); 
     dialog.show(); 
    } 

如果你有一組預定義的顏色使用，或者您想通過動態存儲在Shared Preferences或DB顏色和填充列表上

然後在我的情況下，當他點擊特定項目時，執行切換以執行您的操作，其中有5個常量。