更改數組列表中的對象的文本顏色

Question

我一直試圖在數組列表中添加一個顏色參數，我只是無法做到這一點，我花了無數小時試圖做它，甚至搜索了一個在這裏回答。

這是我的代碼：

MainActivity.java：

package com.example.ofir.myapplication; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

import java.util.ArrayList; 

public class MainActivity extends AppCompatActivity { 

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

     final ArrayList<Brands> brands = new ArrayList<>(); 
     brands.add(new Brands("KTM")); 
     brands.add(new Brands("BMW")); 
     brands.add(new Brands("Suzuki")); 
     brands.add(new Brands("Yamaha")); 
     brands.add(new Brands("HONDA")); 

     BrandAdapter itemsAdapter = new BrandAdapter(this, brands); 

     ListView listView = (ListView) findViewById(R.id.brandlist); 

     listView.setAdapter(itemsAdapter); 

     listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
       brands.get(position); 
       Intent intent = new Intent(MainActivity.this, infoPage.class); 
       startActivity(intent); 
      } 
     }); 
    } 
} 

BrandAdapter.java

package com.example.ofir.myapplication; 
    import android.app.Activity; 
    import android.support.annotation.NonNull; 
    import android.support.annotation.Nullable; 
    import android.view.LayoutInflater; 
    import android.view.View; 
    import android.view.ViewGroup; 
    import android.widget.ArrayAdapter; 
    import android.widget.ImageView; 
    import android.widget.TextView; 

    import java.util.ArrayList; 

    /** 
    * Created by Ofir on 21-Mar-17. 
    */ 
    public class BrandAdapter extends ArrayAdapter<Brands>{ 

     private int mColorResourceId; 

     //Resource id for background color of list 

     public BrandAdapter(Activity context, ArrayList<Brands> brands) { 
      super(context, 0, brands); 
      // mColorResourceId = ColorId; 

     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      // check if the current view is reused else inflate the view 
      View listItemView = convertView; 
      if(listItemView == null){ 
       listItemView = LayoutInflater.from(getContext()).inflate(R.layout.activity_main, parent, false); 
      } 

      Brands brand_item = getItem(position); 

      TextView brandName = (TextView) listItemView.findViewById(R.id.brandtextview); 
      brandName.setText(brand_item.getBrand()); 

      return listItemView; 
     } 
    } 

Brands.java

package com.example.ofir.myapplication; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 

/** 
* Created by Ofir on 20-Mar-17. 
*/ 

public class Brands extends AppCompatActivity { 

    private String mBrandName; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

    } 

    public Brands(String brandName){ 
     mBrandName = brandName; 

} 

    public String getBrand(){ 
     return mBrandName; 
    } 
     } 
    } 

我想什麼爲01添加顏色所以不是

brands.add(new Brands("KTM")); 

我也會有這樣的一行代碼：

brands.add(new Brands("KTM", Orange)); 

和文字顏色將相應更改爲橙色。

非常感謝各位的幫助。

Answer 1

所以你想擁有具有2個值，品牌名稱和顏色的對象列表。 如果是這樣，您必須在您的品牌類中聲明顏色。

public class Brands { 

    private String mBrandName; 
    private String colour; 

    //constructor with 2 arguments, brand name and colour 
    public Brands(String brandName, String colour){ 
     mBrandName = brandName; 
     this.colour = colour; 
    } 

    public String getBrand(){ 
     return mBrandName; 
    } 

    public String getColour(){ //getter of colour 
     return colour; 
    } 
} 

然後你就可以在列表（引號作爲一個字符串，所以）添加顏色：

brands.add(new Brands("KTM", "#FF9933")); //#FF9933 means orange in RGB 

如果你想顯示的顏色，那麼你必須改變你的適配器，此行：

brandName.setText(brand_item.getBrand()); 

到這樣的事情：

brandName.setText(brand_item.getBrand()); 
brandName.setColorText(Color.parseColor(brand_item.getColour())); 

個

更多信息有關設置顏色，您可以在這裏找到：

https://stackoverflow.com/a/4602929/3870382

=========舊文本

但我強烈建議增加新的TextView將要顯示的顏色，然後在您的適配器（如brandName）中查找它並查看它，並將Brand的顏色分配給新創建的顏色文本視圖。