[英]how do I change the solid color of a ripple drawable?
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?android:attr/colorControlHighlight">
<item>
<selector>
<item android:state_selected="true">
<layer-list>
<item android:left="-5dp"
android:top="-5dp"
android:right="-5dp">
<shape android:shape="rectangle">
<stroke android:width="3dp"
android:color="@android:color/white"/>
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</layer-list>
</item>
<item android:state_selected="false">
<shape android:shape="rectangle">
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</selector>
</item>
</ripple>
here is my ripple drawable and i want to change the state_selected , solid color. 这是我的涟漪可绘制,我想更改state_selected , 纯色 。
code i've tried: 我尝试过的代码:
RippleDrawable rippleDrawable = (RippleDrawable) textView.getBackground(); // assumes bg is a RippleDrawable
int[][] states = new int[][]{new int[]{android.R.attr.state_selected}};
int[] colors = new int[]{R.color.white};
ColorStateList colorStateList = new ColorStateList(states, colors);
rippleDrawable.setColor(colorStateList);
unfortuantely it doesn't work.. what am I missing and is this possible? 不幸的是,它不起作用..我想念什么,这可能吗?
You should add an id to items to access them via java/kotlin. 您应该在项目中添加一个ID,以便通过java / kotlin访问它们。
check this background XML file 检查此背景XML文件
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#e0e0e0">
<item android:id="@+id/fab_shape">
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="25dp" />
<solid android:color="@color/colorAccent" />
</shape>
</item>
</ripple>
to change the solid color of this, on constraintLayout background, this drawable XML is applied 要更改其纯色,在constraintLayout背景上,将应用此可绘制的XML
val background = constraintLayout.background as RippleDrawable
val bgShape = background.findDrawableByLayerId(R.id.fab_shape) as GradientDrawable
bgShape.color = color
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