将背景设置为ImageView

Question

我正在创建动态图像视图。

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>

我用setbackgroundResource属性进行了测试，但行不通。

如何将此布局分配给ImageView？

提前致谢。

Answer 1

您在此XML中创建的内容（btw删除 @之后的空格）是 StatelistDrawable 您没有提到的布局。因此，使用 imageView.setimageresource（r.drawable.mydrawable） 设置它。

Answer 2

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);