使用 button.setTextColor 更新后按钮不显示文本

Question

我有一个场景，我需要检查一个设置，然后在并排放置的三个按钮中调整文本的颜色。我还更改了显示的图标和按钮的背景颜色。这两件事都完美无缺，但是在我更改颜色后文本本身不再显示。最初我不调用 setTextColor 就可以了。

这是我正在使用的布局：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFFFFF"
    tools:context=".ui.SelectSportActivity">

<LinearLayout
        android:id="@+id/select_sport"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:orientation="vertical"
        tools:ignore="UselessParent">

    <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/logo_with_name"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="100dp"
            android:contentDescription="@string/my_logo" />
    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/choose_your_sport"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="20dp"
            android:textSize="20sp"
            android:textStyle="bold"
            android:textColor="@color/black"

    />
    <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:layout_gravity="center_horizontal"
            android:gravity="center_horizontal"
            android:orientation="horizontal">
        <Button
                style="@style/Widget.AppCompat.Button.Borderless.Colored"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/imageview_red_gray_border"
                android:drawableTop="@drawable/cricket_icn_select"
                android:textColor="#FFFFFF"
                android:id="@+id/cricketButton"
                android:paddingTop="32sp"
                android:paddingLeft="52sp"
                android:paddingRight="52sp"
                android:paddingBottom="32sp"
                android:drawablePadding="5sp"
                android:text="@string/cricket"/>
        <Button
                style="@style/Widget.AppCompat.Button.Borderless.Colored"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/imageview_white_gray_border"
                android:drawableTop="@drawable/softball_icn"
                android:textColor="#000000"
                android:id="@+id/softballButton"
                android:paddingTop="32sp"
                android:paddingLeft="52sp"
                android:paddingRight="52sp"
                android:paddingBottom="32sp"
                android:drawablePadding="5sp"
                android:text="@string/softball"/>
        <Button
                style="@style/Widget.AppCompat.Button.Borderless.Colored"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/imageview_white_gray_border"
                android:drawableTop="@drawable/tennis_icn"
                android:textColor="#000000"
                android:id="@+id/tennisButton"
                android:paddingTop="32sp"
                android:paddingLeft="52sp"
                android:paddingRight="52sp"
                android:paddingBottom="32sp"
                android:drawablePadding="5sp"
                android:text="@string/tennis"/>

    </LinearLayout>
</LinearLayout>

代码检查一个值，然后通过调用此函数根据需要进行调整：

private fun toggleButtons(sport: Int) {

    when (sport) {
        0 -> {
            cricketButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_red_gray_border)
            cricketButton.drawable(R.drawable.cricket_icn_select)
            cricketButton.setTextColor(0xFFFFFF)
            softballButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            softballButton.drawable(R.drawable.softball_icn)
            softballButton.setTextColor(0x000000)
            tennisButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            tennisButton.drawable(R.drawable.tennis_icn)
            tennisButton.setTextColor(0x000000)
        }
        1 -> {
            cricketButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            cricketButton.drawable(R.drawable.cricket_icn)
            cricketButton.setTextColor(0x000000)
            softballButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_red_gray_border)
            softballButton.drawable(R.drawable.softball_icn_select)
            softballButton.setTextColor(0xFFFFFF)
            tennisButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            tennisButton.drawable(R.drawable.tennis_icn)
            tennisButton.setTextColor(0x000000)
        }
        2 -> {
            cricketButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            cricketButton.drawable(R.drawable.cricket_icn)
            cricketButton.setTextColor(0x000000)
            softballButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            softballButton.drawable(R.drawable.softball_icn)
            softballButton.setTextColor(0x000000)
            tennisButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_red_gray_border)
            tennisButton.drawable(R.drawable.tennis_icn_select)
            tennisButton.setTextColor(0xFFFFFF)
        }
        else -> {
            Timber.w("Unknown sport selected: $sport")
        }
    }
}

知道发生了什么吗？

Answer 1

好的，在玩了它之后，有两件事出错了。一个愚蠢的（与 xml 不同，setTextColor 需要解析的 ID，而不是 RGB）并且您不能在代码中使用 .drawable。需要设置CompoundDrawablesRelativeWithIntrinsicBounds。

            cricketButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            cricketButton.setTextColor(resources.getColor(R.color.black, null))
            cricketButton.setCompoundDrawablesRelativeWithIntrinsicBounds(0,R.drawable.cricket_icn,0,0)
            softballButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_red_gray_border)
            softballButton.setTextColor(resources.getColor(R.color.white, null))
            softballButton.setCompoundDrawablesRelativeWithIntrinsicBounds(0,R.drawable.softball_icn_select,0,0)
            tennisButton.background = ContextCompat.getDrawable(this, R.drawable.imageview_white_gray_border)
            tennisButton.setTextColor(resources.getColor(R.color.black, null))
            tennisButton.setCompoundDrawablesRelativeWithIntrinsicBounds(0,R.drawable.tennis_icn,0,0)