Question

我在布局中有一个微调器。

<Spinner android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:spinnerMode="dropdown"
    android:id="@+id/spn_college_names"></Spinner>

我使用Matrix Cursor和Simple Cursor Adapter设置它的值，如下所示 spn_CollegeNames =（Spinner）findViewById（R.id.spn_college_names）;

    String[] ColoumnNames = {"_id","CollegeName"};
    _CollegeNames = getResources().getStringArray(R.array.settings_college_names);
    MatrixCursor cursor = new MatrixCursor(ColoumnNames);

    for (int CollegeIndex = 0; CollegeIndex < _CollegeNames.length; CollegeIndex++ )
    {
        cursor.addRow(new Object[] {CollegeIndex+1 , _CollegeNames[CollegeIndex]});
    }

    SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(getApplicationContext(), android.R.layout.simple_spinner_dropdown_item, cursor, new String[] {"CollegeName"}, new int[] {android.R.id.text1},0 );
    /*TextView tv = (TextView) spn_CollegeNames.getSelectedView();
    tv.setTextColor(Color.BLACK);*/
    spn_CollegeNames.setAdapter(cursorAdapter);

我现在的问题是微调器中的文本显示为灰色。我想将文本更改为黑色。我知道我可以在布局中使用android：enteries属性但是我将来会用数据库光标替换矩阵光标，这意味着我没有固定的字符串数组值。

Answer 1

您可以通过覆盖getDropdownView和/或getView来实现它。 getDropdownView返回展开的微调器的视图，getView返回折叠微调器的视图。

SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(getApplicationContext(), android.R.layout.simple_spinner_dropdown_item, cursor, new String[] {"CollegeName"}, new int[] {android.R.id.text1},0 ){

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
    View view = super.getDropDownView(position,convertView,parent);
    TextView text = (TextView)view.findViewById(android.R.id.text1);
    text.setTextColor(Color.BLACK);
    return view;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View view = super.getView(position,convertView,parent);
    TextView text = (TextView)view.findViewById(android.R.id.text1);
    text.setTextColor(Color.BLACK);
    return view;
}

};

Answer 2

试试这个：

private OnItemSelectedListener OnCatSpinnerCL = new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> parent, View view, int pos,
            long id) {
        ((TextView) parent.getChildAt(0)).setTextColor(Color.BLACK);
    }

    public void onNothingSelected(AdapterView<?> parent) {
    }
};

Answer 3

而不是android.R.layout.simple_spinner_dropdown_item，您必须提供custom textView项目。

Spinnerlayout.xml

  <TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#00eeff" 
android:text="TextView" />

您的适配器

    SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(getApplicationContext(), R.layout.spinnerlayout, cursor, new String[] {"CollegeName"}, new int[] {android.R.id.text1},0 );

旋转器内的文本颜色

3 个答案: