更新时间:2023-11-16 19:29:16
如果您可以共享一些代码段,那就更好了……
It would be better if u can share some code snippets...
无论如何,就 ClassCastException
而言,这意味着您正在声明某种类型的变量,并将其分配给在布局xml文件中定义的另一种类型...
Anyways, as far as ClassCastException
is concerned, it means you are declaring a variable of some type and assigning it to another type you have defined in a layout xml file...
例如,在xml中,您可能已经拥有:
for example, in the xml you may have had:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:layout_height="wrap_content"
android:id="@+id/btn1"
android:layout_width="wrap_content">
</Button>
</LinearLayout>
但是在将组件连接到代码时:
but while connecting the component to code:
ImageView img1 = (ImageView)context.findViewById(R.id.btn1);
这将触发 ClassCastException
bcoz,您正在将Button投射到ImageView变量,据您所知,这是不可能的!
This will fire a ClassCastException
bcoz you are casting a Button to an ImageView variable which is as u understand not possible!
如果这不能解决您的问题,那么***在找出导致错误的代码段后发布一些代码段!
If this doesnt solve your problem then it'll be better if u post some code snippets after figuring out which code snippet causes the error!