AutoCompleteTextView背景/前景色

<AutoCompleteTextView
    android:id="@+id/autoCompleteTextView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/background_color"
    android:textColor="@color/foreground_color"
    android:completionThreshold="1"
    android:hint="请输入关键字" />

AutoCompleteTextView autoCompleteTextView = findViewById(R.id.autoCompleteTextView);
autoCompleteTextView.setBackgroundColor(getResources().getColor(R.color.background_color));
autoCompleteTextView.setTextColor(getResources().getColor(R.color.foreground_color));