Java Android中存储的drawable将发生更改

恢复时，ImageView背景更改为最后一个大小

lateinit var bgImage: NinePatchDrawable

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_test_easy)

        bgImage = ContextCompat.getDrawable(this, R.drawable.tm_bg_special) as NinePatchDrawable

        iv1.background = bgImage
        iv2.background = bgImage
        iv3.background = bgImage
        iv4.background = bgImage

        // It works fine if I use drawable directly to each imageView
        iv1.background = ContextCompat.getDrawable(this, R.drawable.tm_bg_special) as NinePatchDrawable
        iv2.background = ContextCompat.getDrawable(this, R.drawable.tm_bg_special) as NinePatchDrawable
        iv3.background = ContextCompat.getDrawable(this, R.drawable.tm_bg_special) as NinePatchDrawable
        iv4.background = ContextCompat.getDrawable(this, R.drawable.tm_bg_special) as NinePatchDrawable
    }

如果我对每个imageView直接使用drawable，效果很好，但我想存储drawable，因为它是在原始情况下在运行时创建的，需要设置为大量imageView

发生了什么。。。

引用xml

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:orientation="horizontal"
        android:layout_margin="5dp"
        android:visibility="visible"
        android:layout_alignParentBottom="true">

        <ImageView
            android:id="@+id/iv1"
            android:layout_width="90dp"
            android:padding="0dp"
            android:layout_height="wrap_content"/>

        <ImageView
            android:id="@+id/iv2"
            android:layout_width="50dp"
            android:padding="0dp"
            android:layout_gravity="center"
            android:layout_height="wrap_content"/>

        <ImageView
            android:id="@+id/iv3"
            android:layout_width="120dp"
            android:padding="0dp"
            android:layout_gravity="center"
            android:layout_height="wrap_content"/>

        <ImageView
            android:id="@+id/iv4"
            android:layout_width="20dp"
            android:padding="0dp"
            android:layout_gravity="center"
            android:layout_height="wrap_content"/>

    </LinearLayout>

---

我认为，当系统将bgImage设置为视图时，它将调整bgImage本身的大小。这意味着bgImage将使用上次分配给它的视图的大小

您可以尝试此操作以查看是否所有图像都变大：

    iv4.background = bgImage
    iv3.background = bgImage
    iv2.background = bgImage
    iv1.background = bgImage

如果是这种情况，您可以做的是创建四个NinePatchDrawable并重用它们