Question

我有一个ImageButton：

<ImageButton
    android:layout_width="100dp"
    android:layout_height="100dp"
    app:srcCompat="@drawable/round_color"
    android:layout_below="@+id/lamps_list_room"
    android:layout_alignStart="@+id/lamps_list_room"
    android:layout_marginStart="69dp"
    android:layout_marginTop="62dp"
    android:id="@+id/color_picker_button"
    android:background="@color/colorPrimaryDark"/>

形状：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#FFFFFF" />
    <corners android:radius="100dp" />
    <stroke
        android:color="#FFFFFF"
        android:width="2px">
    </stroke>
</shape>

更改形状的纯色的最佳方法是什么？

ImageButton imageButton = (ImageButton) ((Activity) mContext).findViewById(R.id.color_picker_button);

Drawable drawable = imageButton.getBackground();
drawable.setColorFilter(0xff999999, PorterDuff.Mode.MULTIPLY);

形状仍然是白色......

编辑：

即使我尝试

Drawable drawable = mContext.getDrawable(R.drawable.round_color);

ColorFilter filter = new LightingColorFilter(Color.BLACK, Color.BLACK);

if (drawable != null) {
    drawable.setColorFilter(filter);
}

它仍然无法运作！

Answer 1

这是示例代码

GradientDrawable bgShape = (GradientDrawable)YourView.getBackground();
bgShape.setColor(Color.BLACK);

Answer 2

我就这样做，相应地改变代码。

GradientDrawable bgShape = (GradientDrawable) getChildAt(0).getBackground();
bgShape.setColor();

Answer 3

你可以试试这个：

 GradientDrawable gradientDrawable= (GradientDrawable) color_picker_button.getDrawable(); 
gradientDrawable.setColor(Color.BLACK);

改变形状颜色

3 个答案: