多次使用 drawable 但颜色不同

Question

我有一个用于切换按钮的选择器已选中和未选中 - 有没有一种方法可以使用具有形状的自定义图层列表并使用不同的颜色？我在运行时添加它们，但使用 XML 作为设计。

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:drawable="@drawable/toggle_custom"/>
<item android:state_checked="false" android:drawable="@drawable/toggle_custom_off"/>
</selector>

还有我的toggle_custom和toggle_custom_off

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/mainColourOn">
    <shape android:shape="rectangle" />
</item>
<item android:bottom="10dp">
    <shape android:shape="rectangle">
        <solid android:color="#E6FFFFFF"/>
    </shape>
</item>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/mainColourOff">
    <shape android:shape="rectangle"/>
</item>
<item android:bottom="10dp">
    <shape android:shape="rectangle">
        <solid android:color="#FFF"/>
    </shape>
</item>

        LayerDrawable layerOn = (LayerDrawable) getResources().getDrawable(R.drawable.toggle_custom, getTheme());

        LayerDrawable layerOff = (LayerDrawable) getResources().getDrawable(R.drawable.toggle_custom_off, getTheme());

        GradientDrawable toggleOn = (GradientDrawable) layerOn.findDrawableByLayerId(R.id.mainColourOn);
        GradientDrawable toggleOff = (GradientDrawable) layerOff.findDrawableByLayerId(R.id.mainColourOff);

        int colour = persons.get(i).getColour();

        toggleOn.mutate();
        toggleOff.mutate();
        toggleOn.setColor(colour);
        toggleOff.setColor(colour);

因此，例如，有一个使用红色的开关，另一个使用相同颜色的蓝色 XML。谢谢

Answer 1

您可以为层列表 Drawable 重用 xml 并像这样以编程方式为每个 ToggleButton 创建 StateListDrawable：

void setToggleButtonColor(ToggleButton tButton, int colour)
{
    LayerDrawable layerOn = (LayerDrawable) ContextCompat.getDrawable(this, R.drawable.toggle_custom);
    layerOn.mutate();
    LayerDrawable layerOff = (LayerDrawable) ContextCompat.getDrawable(this, R.drawable.toggle_custom_off);
    layerOff.mutate();
    Drawable toggleOn = layerOn.findDrawableByLayerId(R.id.mainColourOn);
    Drawable toggleOff = layerOff.findDrawableByLayerId(R.id.mainColourOff);

    toggleOn.setColorFilter(colour, PorterDuff.Mode.MULTIPLY);
    toggleOff.setColorFilter(colour, PorterDuff.Mode.MULTIPLY);

    StateListDrawable tbBackground = new StateListDrawable();

    tbBackground.addState(new int[]{android.R.attr.state_checked}, layerOn );
    tbBackground.addState(StateSet.WILD_CARD, layerOff);

    tButton.setBackgroundDrawable(tbBackground);

}

让我们用两个 ToggleButton 来测试它：

ToggleButton toggleButton1 = (ToggleButton) findViewById(R.id.togglebutton1);
toggleButton1.setChecked(true);

ToggleButton toggleButton2 = (ToggleButton) findViewById(R.id.togglebutton2);
toggleButton2.setChecked(true);

setToggleButtonColor(toggleButton1, ContextCompat.getColor(this, R.color.blue));
setToggleButtonColor(toggleButton2, ContextCompat.getColor(this, R.color.magenta));

多次使用 drawable 但颜色不同

Use drawable multiple times but with different colours

java

xml

android

layer-list