Java 将背景设置为Imageview

我正在创建一个动态图像视图

ImageView btnSend = new ImageView (this);

我需要放置一个包含图像状态的布局，这是xml：

<? xml version = "1.0" encoding = "utf-8"?>
<selector
      xmlns: android = "http://schemas.android.com/apk/res/android">
      <item
           android: state_focused = "true"
           android: state_pressed = "false"
           android: drawable = "@ drawable/button_state3" />
      <item
           android: state_focused = "true"
           android: state_pressed = "true"
           android: drawable = "@ drawable/button_state2" />
      <item
           android: state_focused = "false"
           android: state_pressed = "true"
           android: drawable = "@ drawable/button_state2" />
      <item
           android: drawable = "@ drawable/button_state1" />
</ selector>

我使用setBackgroundResource属性进行了测试，但不起作用

如何将此布局分配给Imageview

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提前感谢。

您在此XML中创建的内容（顺便说一句，删除@之后的空格）不是您提到的布局。

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因此，请使用设置它。

这是有效的代码

ImageView btnEliminar = new ImageView (this);

StateListDrawable drawable = new StateListDrawable();

Drawable normal = getResources().getDrawable(R.drawable.image_normal);
Drawable selected = getResources().getDrawable(R.drawable.image_selected);
Drawable pressed = getResources().getDrawable(R.drawable.image_pressed);

drawable.addState(new int[] { android.R.attr.state_pressed}, pressed);
drawable.addState(new int[] { android.R.attr.state_focused}, selected);
drawable.addState(new int[] { android.R.attr.state_enabled}, normal);

btnEliminar.setImageDrawable(drawable);

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并确保它在您的drawable文件夹中，而不是布局文件夹中。StateListDrawable解决了我的问题，谢谢米兰！！我在下面的帖子中为有相同问题的用户留下了代码