我想在XML中为自定义视图指定子布局,类似于include元素的layout属性:
<include layout="@layout/all_apps_cling"
android:id="@+id/all_apps_cling"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
此外,我需要在Eclipse或IntelliJ图形布局预览中的设计时自定义视图
[至少不在图形布局预览中]
attrs.xml
<declare-styleable name="ShowcaseView">
<attr name="android:layout"/>
</declare-styleable>
usecase.xml
<com.github.espiandev.showcaseview.ShowcaseView
style="@style/ShowcaseView"/>
styles.xml
<style name="ShowcaseView" parent="match_fill">
<item name="android:layout">@layout/handy</item>
</style>
ShowcaseView.java
public ShowcaseView(Context context) {
this(context, null, R.styleable.CustomTheme_showcaseViewStyle);
}
public ShowcaseView(Context context, AttributeSet attrs) {
this(context, attrs, R.styleable.CustomTheme_showcaseViewStyle);
}
public ShowcaseView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// Get the attributes for the ShowcaseView
final TypedArray styled = context.getTheme().obtainStyledAttributes(attrs, R.styleable.ShowcaseView, 0, 0);
TypedValue handLayout = null;
// Not sure if should be using .getValue in the first place
// But there is no method TypedValue.getLayout or such
if (styled.getValue(R.styleable.ShowcaseView_android_layout, handLayout)) {
// Does not reach here
} else {
// Reaches here instead i.e. getValue failed
}
styled.recycle();
}
我无法使用<attr name="linkedLayout" format="reference"/>
,因为我需要它在图形布局预览中工作 - 请参阅设计器Resources$NotFoundException in Graphical Layout ADT preview (but app actually Works)中访问资源的问题
答案 0 :(得分:1)
尝试将布局放在主布局文件中:
<ShowcaseView ...>
<include .../>
</ShowcaseView>
当然你也可以直接添加孩子而不是包含标签:
<ShowcaseView ...>
<Button .../>
...
<Button .../>
</ShowcaseView>