我想将Spinner下拉项目的文字颜色更改为黑色。
我有一个自定义Spinner,列出了不同的语言。它有一个ImageView
和一个TextView
。旋转器显示在带有白色文本的蓝色背景上,看起来很好。
问题是当它被点击时,下拉显示但文字几乎看不见,因为下拉的浅灰色和文本的白色。
这是activity_main.xml
:
<Spinner
android:id="@+id/languageSpinner"
style="@android:style/Widget.Material.Light.DropDownItem.Spinner"
android:layout_width="140dp"
android:layout_height="40dp"
android:prompt="@string/selectLanguageSpinner"
android:spinnerMode="dropdown" />
这是spinner_row_layout.xml
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:orientation="horizontal">
<ImageView
android:id="@+id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical" />
<TextView
android:id="@+id/language"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_gravity="center_vertical"
android:layout_marginEnd="10dp"
android:layout_marginStart="5dp"
android:gravity="center_vertical"
android:lineSpacingExtra="20dp"
android:minHeight="40dp"
android:textColor="@color/white"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
这里文本颜色设置为白色,因为我没有选择任何颜色时需要它是白色。
这是styles.xml
中的代码:
<!-- Base application theme. -->
<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/myAppPrimaryColor</item>
<item name="colorPrimaryDark">@color/myAppPrimaryDarkColor</item>
<item name="colorAccent">@color/myAppAccentColor</item>
<item name="android:dropDownListViewStyle">@style/TestSpinnerStyle</item>
<item name="android:spinnerItemStyle">@style/mySpinnerItemStyle</item>
</style>
<style name="mySpinnerItemStyle">
<item name="android:paddingLeft">5dp</item>
<item name="android:paddingBottom">3dp</item>
<item name="android:textSize">20sp</item>
<item name="android:textColor">@color/white</item>
</style>
<!-- ^^ Here I need to set the color to white, because I also have default
spinner on the activity that needs to have a default white color.
But when the default spinner is clicked, the color of the
drop down items is black. How can I do that with my custom spinner? -->
<style name="TestSpinnerStyle" parent="android:style/Widget.ListView.DropDown">
<item name="android:textSize">22sp</item>
<item name="android:textColor">@color/black</item>
<item name="android:height">20dp</item>
<item name="android:divider">@color/gray</item>
<item name="android:dividerHeight">1dp</item>
<item name="android:dividerPadding">5dp</item>
<item name="android:background">@color/default_gray</item>
</style>
<!-- ^^ The text color property here is not reflected.. -->
有人有任何建议吗?
编辑:在评论和答案的帮助下,我设法做到了。我认为它可以在XML中完成...无论如何在java代码背后,这就是我所做的:
定义自定义适配器后,我们需要覆盖getDropDownView
方法,该方法在单击微调器并显示下拉列表时触发。还应覆盖getView
方法,以便在未单击Spinner
时处理默认颜色。换句话说,这是代码:
public class CustomSpinnerAdapter extends ArrayAdapter<String> {
public CustomSpinnerAdapter(Context context, int textViewResourceId, String[] objects, TypedArray image){
super(context, textViewResourceId, objects);
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent){
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.spinner_row_layout, parent, false);
TextView label = (TextView) row.findViewById(R.id.language);
label.setText(languages_list[position]);
label.setTextColor(getResources().getColor(android.R.color.black));
ImageView icon = (ImageView) row.findViewById(R.id.icon);
icon.setImageDrawable(icons_list.getDrawable(position));
return row;
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.spinner_row_layout, parent, false);
TextView textView = (TextView) row.findViewById(R.id.language);
textView.setText(languages_list[position]);
textView.setTextColor(getResources().getColor(android.R.color.white));
ImageView icon = (ImageView) row.findViewById(R.id.icon);
icon.setImageDrawable(icons_list.getDrawable(position));
return row;
}
}
请注意TextView
中getDropDownView
的颜色设置为黑色,而getView
中的颜色设置为白色。
答案 0 :(得分:5)
我做过那样的事情,但在function fncInputDateTimeOnly(textBox) {
var textLength = textBox.value.length;
...
BaseAdapter
答案 1 :(得分:0)
试试这个我希望不行。
((Spinner)findViewById(R.id.spinnergender)).setAdapter(adapter);
((Spinner)findViewById(R.id.spinnergender)).setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Log.e("Value",""+position);
((TextView) ((Spinner)findViewById(R.id.spinnergender)).getSelectedView()).setTextColor(getResources().getColor(R.color.cyan));
if(parent.getItemAtPosition(position).toString().equals(getResources().getString(R.string.Gender))) {
((TextView) ((Spinner)findViewById(R.id.spinnergender)).getSelectedView()).setTextColor(getResources().getColor(R.color.Text));
}
}
答案 2 :(得分:0)
您应该为微调器和getDropDownView创建自定义适配器(扩展BaseAdapter),并根据您的意愿对自定义spinner_item_dropdown.xml进行充气。