我已经制作了以下ImageView,以支持选择器为“src”：

public class CheckableImageView extends ImageView implements Checkable {
    private boolean mChecked;

    private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked };

    public CheckableImageView(final Context context,final AttributeSet attrs) {
        super(context,attrs);
        final TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.com_app_CheckableImageView,0);
        setChecked(a.getBoolean(R.styleable.com_app_CheckableImageView_com_app_checked,false));
        a.recycle();
    }

    @Override
    public int[] onCreateDrawableState(final int extraSpace) {
        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
        if (isChecked())
            mergeDrawableStates(drawableState,CHECKED_STATE_SET);
        return drawableState;
    }

    @Override
    public void toggle() {
        setChecked(!mChecked);
    }

    @Override
    public boolean isChecked() {
        return mChecked;
    }

    public interface OnCheckStateListener {
        void onCheckStateChanged(boolean checked);
    }

    private OnCheckStateListener mOnCheckStateListener;

    public void setOnCheckStateListener(OnCheckStateListener onCheckStateListener) {
        mOnCheckStateListener = onCheckStateListener;
    }

    @Override
    public void setChecked(final boolean checked) {
        if (mChecked == checked)
            return;
        mChecked = checked;
        refreshDrawableState();
        if (mOnCheckStateListener != null) 
            mOnCheckStateListener.onCheckStateChanged(checked);
    }
}

问题

上面的代码适用于普通选择器,它具有图像文件作为每个状态可绘制的项目.

事实上,它完全不适用于矢量绘图(使用“srcCompat”).相反,它显示一个空的内容.

这是我试过的：

<...CheckableImageView
         ...
            app:srcCompat="@drawable/selector"/>

而选择器(例如)是：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item  android:state_checked="true" android:drawable="@drawable/test"/>
    <item  android:state_pressed="true" android:drawable="@drawable/test" />
    <item android:drawable="@drawable/test2" />
</selector>

示例矢量drawable：

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
        android:width="48dp"
        android:height="48dp"
        android:viewportWidth="48"
        android:viewportHeight="48">

    <path
        android:fillColor="#0000ff"
        android:strokeColor="#000000"
        android:pathData="M 0 0 H 48 V 48 H 0 V 0 Z" />

    <path
        android:fillColor="#ff0000"
        android:strokeColor="#000000"
        android:pathData="M14.769224,32.692291l5.707315,-17.692275l3.073244,17.479182l6.585245,-16.413424l2.634209,16.200186l-4.170761,-8.526356l-5.048693,7.247362l-5.268419,-8.100027l-3.51214,9.805351z" />
</vector>

这个问题

为什么不起作用？我做了什么错了？我该如何解决？