在微调器中更改所选项目的文本颜色

时间:2013-03-13 08:02:55

标签: android android-spinner

如何更改微调器中所选项目的字体颜色?

我可以更改所选项目的背景颜色,下拉项目的颜色等,但不能更改所选项目的文本颜色......我该怎么做?

我的代码是: 这是我正在使用的微调器 - :

<Spinner
                android:id="@+id/spinner1"
                android:layout_width="wrap_content"
                android:layout_height="32dip"
                android:background="@drawable/mybg"
                android:divider="@drawable/list_divider"
                android:drawSelectorOnTop="true"
                android:popupBackground="#D3D5D3"
                android:prompt="@string/activityy_prompt" 
                />

这是mybg.xml

<!-- <item android:drawable="@drawable/blue" android:state_pressed="false"/> -->
<!-- <item android:drawable="@drawable/back11"/> -->

<item android:drawable="@drawable/greenyellow1" android:state_focused="true" android:state_pressed="false"/>
<item android:drawable="@drawable/greenyellow1" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/greenyellow1" android:state_focused="false" android:state_pressed="true"/>
<item android:drawable="@drawable/greenyellow1" android:state_selected="true"/>
<item android:drawable="@drawable/back11"/>

使用这些我无法改变selecetd项目的文字颜色......

14 个答案:

答案 0 :(得分:55)

像这样定义OnItemSelectedListener

  private AdapterView.OnItemSelectedListener listener = new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            ((TextView) parent.getChildAt(0)).setTextColor(0x00000000);
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    };

然后将OnItemSelectedListener设置为spinner,如下所示:

spinner.setOnItemSelectedListener(listener);

答案 1 :(得分:15)

抽拉/ mybg:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_activated="true">
        <color android:color="@color/black" />
    </item>
</layer-list>

这将更改弹出窗口中所选的项目颜色。

答案 2 :(得分:15)

尝试在OnItemSelectedListener中实现onItemSelected,以更改微调器选定项的文本颜色

public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 
    int index = adapterView.getSelectedItemPosition();
    ((TextView) spinner.getSelectedView()).setTextColor(getResources().getColor(R.color.Blue)); //<----

答案 3 :(得分:8)

使用选择器作为文本颜色。

在drawable中创建color_selector.xml,如

<?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_pressed="true"
           android:color="#000000" /> <!-- pressed -->
     <item android:state_focused="true"
           android:color="#000000" /> <!-- focused -->
     <item android:color="#FFFFFF" /> <!-- default -->
 </selector>

并在textview中

<TextView 
   android:textColor="@drawable/color_selector"/>

答案 4 :(得分:8)

您可以通过将OnItemSelectedListener添加到spinner

来更改所选的文字颜色
qtySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        ((TextView) view).setTextColor(Color.BLACK); //Change selected text color
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {

    }
});

答案 5 :(得分:4)

只需使用此行onItemSelected listner -

public void onItemSelected(AdapterView<?> parent, View arg1, int arg2,long arg3) 
     {

       item = (String) parent.getItemAtPosition(arg2);


       ((TextView) parent.getChildAt(0)).setTextColor(0x00000000);

 }

答案 6 :(得分:3)

((TextView) view).setTextColor(getResources().getColor(R.color.black)); 侦听器方法内设置onItemSelected(...)即可。 它为您选择的微调文字设置颜色。

答案 7 :(得分:2)

我知道这是一个老问题,但我在TabLayout中更改了微调器中所选项目的颜色时遇到了很大问题,这对我来说真的很有用:

spinner.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                ((TextView) spinner.getSelectedView()).setTextColor(Color.WHITE); //change to your color
            }
        });

答案 8 :(得分:0)

查看我对类似问题here的回答。我的答案类似于Priya,但它也正确设置了默认选定项目的文本颜色(因此在等待微调器自动选择默认值时,没有使用错误颜色的延迟item,在用户界面已经在屏幕上后发生。)

答案 9 :(得分:0)

如果您的微调器使用ArrayAdapter,您只需为微调器项传递自定义布局即可。该布局可以是一个简单的textView,但使用android:textColor属性。

MainActivity.java onCreate()

adapter = new ArrayAdapter<>(this, R.layout.spinner_custom_textcolor, data);
spinner.setAdapter(adapter);

spinner_custom_textcolor.xml

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerItemStyle" 
android:textColor="@color/YOUR_COLOR_HERE"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee"
android:textAlignment="inherit"/>

*除了 android:textColor 之外,上述布局中的所有内容都是 android.R.layout.simple_spinner_item

的直接副本

答案 10 :(得分:0)

Android 2.3v中的背景颜色更改不需要Java代码。只需添加 {x}文件中的android:background="#F0F8FF"到您的微调器。

答案 11 :(得分:0)

使用MaterialBetterSpinner和绑定布局的一些人,  所有这些都无济于事,试试这个,希望它可以帮到你:

public class MyAdapter extends ArrayAdapter<String> {      

        public MyAdapter(Context context, int textViewResourceId, List<String> objects) {
            super(context, textViewResourceId, objects);           

        }

        @Override
        public View getDropDownView(int position, View convertView, ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

        public View getCustomView(int position, View convertView, ViewGroup parent) {
            LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            final YourXMLBinding rowBinding = DataBindingUtil.inflate(inflater, R.layout.yourXML, parent,false);
            rowBinding.tv1.setText(mMy.getValues().get(position));
            if(position == mMy.getCurrentIndex()) {
                rowBinding.tv1.setTypeface(Typer.set(getContext()).getFont(Font.ROBOTO_BOLD));//change font
                rowBinding.tv1.setTextColor(ContextCompat.getColor(getContext(), R.color.yourColor));//change color
            }
            return rowBinding.getRoot();
        }
    }

yourXML是这样的:

<?xml version="1.0" encoding="utf-8"?>
<layout>

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:background="@color/colorBackgroundStart">
        <TextView
            android:id="@+id/tv1"
            android:layout_width="0dp"
            android:layout_weight="0.7"
            android:layout_height="30dp"
            android:textColor="#fff"
            android:textSize="16dp"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="10dp"
            android:layout_marginLeft="8dp"/>

</layout>

使用此适配器和yourXML:

创建一个微调器
final MyAdapter adapter = new MyAdapter(getContext(), R.layout.yourXML, s.getValues());

final MaterialBetterSpinner spinner = new MaterialBetterSpinner(getContext());
spinner.setAdapter(adapter);

答案 12 :(得分:0)

mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) {
           ((TextView) adapterView.getChildAt(0)).setTextColor(Color.WHITE);
}

答案 13 :(得分:0)

对我有用的解决方案是使用CheckedTextView作为下拉资源视图,然后使用颜色选择器更改选中项目的颜色。

spinner_dropdown_item.xml文件夹中的

layout

<?xml version="1.0" encoding="utf-8"?>

<!-- A `CheckedTextView` allows the color of the text to be changed when it is selected (checked). -->
<CheckedTextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/spinner_item_textview"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:maxLines="1"
    android:ellipsize="end"
    android:paddingStart="20dp"
    android:paddingEnd="20dp"
    android:paddingTop="8dp"
    android:paddingBottom="8dp"
    android:textSize="18sp"
    android:textColor="@color/spinner_color_selector"
    android:background="@color/spinner_background" />
spinner_color_selector文件夹中的

color

<?xml version="1.0" encoding="utf-8"?>

<!-- Highlight the selected (checked) item when the spinner is open. -->
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_checked="true" android:color="@color/white" />
    <item android:color="@color/blue_100" />
</selector>
必须将{p> spinner_dropdown_item.xml设置为DropDownResourceView的{​​{1}}。在我的情况下,我使用Adapter从多个来源提取信息。

ResourceArrayAdapter

由于// Setup a `MatrixCursor` for the static entries. String[] matrixCursorColumnNames = {DatabaseHelper._ID, DatabaseHelper.NAME}; MatrixCursor matrixCursor = new MatrixCursor(matrixCursorColumnNames); matrixCursor.addRow(new Object[]{-2, getString(R.string.first_spinner_item)}); matrixCursor.addRow(new Object[]{-1, getString(R.string.second_spinner_item)}); // Get a `Cursor` with the list of additional items from the database. Cursor cursor = DatabaseHelper.getCursor(); // Combine `matrixCursor` and `cursor`. MergeCursor mergeCursor = new MergeCursor(new Cursor[]{matrixCursor, foldersCursor}); // Create a `ResourceCursorAdapter` for the spinner with `this` context. `0` specifies no flags.; ResourceCursorAdapter resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.spinner_item, mergeCursor, 0) { @Override public void bindView(View view, Context context, Cursor cursor) { // Get a handle for the spinner item `TextView`. TextView spinnerItemTextView = (TextView) view.findViewById(R.id.spinner_item_textview); // Set the `TextView` to display the name. spinnerItemTextView.setText(cursor.getString(cursor.getColumnIndex(DatabaseHelper.NAME))); } }; // Set the `ResourceCursorAdapter` drop drown view resource. resourceCursorAdapter.setDropDownViewResource(R.layout.spinner_dropdown_item); // Get a handle for the `Spinner`. Spinner spinner = (Spinner) findViewById(R.id.spinner); // Set the adapter for the folder `Spinner`. spinner.setAdapter(resourceCursorAdapter); 使用相同的ResourceCursorAdapter来填充微调器在打开和关闭时,bindViewTextView中的spinner_dropdown_item.xml的ID必须是一样的。

spinner_item.xml文件夹中的

spinner_item.xml

layout