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Question

我目前在我的应用上有一个自动完成下拉框，但看起来字体颜色是一种灰色，在填充列表时不可见。第二张图显示了点击时下拉列表的外观。如何更改下拉列表的布局以将列表中的项目显示为不同的颜色，如黑色？

下面的照片！

First

Second

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    AlertDialog.Builder adb = new AlertDialog.Builder(SettingsMain.this);
                LayoutInflater inflater =     SettingsMain.this.getLayoutInflater(); 
                final View searchlayout = inflater.inflate(R.layout.search_friend, null);

                friend_name = (AutoCompleteTextView) searchlayout.findViewById(R.id.friend_name);       
                friend_name.addTextChangedListener(new TextWatcher() {
                    public void afterTextChanged(Editable editable) {

                    }

                    public void beforeTextChanged(CharSequence charSequence, int arg1, int arg2, int arg3) {

                    }

                    public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
                        String text = charSequence.toString();

                            new MyAsyncTask("get").execute("http://10.0.2.2/jamtivia/webservice.php?type=get_friends&username="+text);
                            drop_down_adapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_dropdown_item_1line,adapterList);
                            drop_down_adapter.notifyDataSetChanged();
                            friend_name.setAdapter(drop_down_adapter);
                            if (!friend_name.isPopupShowing()) {
                                friend_name.showDropDown();
                            } 


                                for(int i =0;i < adapterList.size();i++)
                                    Log.d("TEXT CHNGE", adapterList.get(i));
                    }
                });

                adb.setView(searchlayout)

               .setPositiveButton("Ok", new DialogInterface.OnClickListener() {  
                    public void onClick(DialogInterface dialog, int whichButton) {  
                        String fname = friend_name.getText().toString();
                        Integer friend_id = null;

                        try{
                            friend_id = adapterListId.get(adapterList.indexOf(fname));
                            Log.d( "ECHO" , "text : " + name +"ID :"+ player_id+ " ID: " + friend_id);
                            String request = "http://10.0.2.2/jamtivia/webservice.php?type=add_friends&friendId="+friend_id+"&playerId="+player_id;
                            new MyAsyncTask("send").execute(request);
                        }catch(Exception e){Log.d( "PROBLEM SENDING" , "text : " + adapterList.indexOf(fname));}
                        return;                  
                       }  
                  })
               .setNegativeButton("Done", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {

                        dialog.cancel(); 
                    }
                }); 

                    adb.show();

另外，就这段代码而言，您可以看到这是执行此功能的好方法吗？

Answer 1

使用预定义布局创建ArrayAdapter时，请使用自定义布局

像这样

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
 android:id="@+id/cust_view"  
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:textColor="@android:color/white"
    android:background="@drawable/list_style" 
    android:textSize="17sp"
    android:padding="5dp"
    android:gravity="left|center_vertical"/>

//您可以将您选择的颜色或图像作为背景并根据您的选择命名，让我们说custom_list.xml

创建适配器时使用您的布局

 drop_down_adapter = new ArrayAdapter<String>(getApplicationContext(), R.layout.custom_list,adapterList);

我希望这会对你有所帮助

自动填充下拉列表需要更改布局

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1 个答案: