{"id":37,"date":"2020-11-30T18:37:03","date_gmt":"2020-11-30T10:37:03","guid":{"rendered":"http:\/\/[240e:33d:129:4cc0:265e:beff:fe51:adfd]\/WordPress\/?p=37"},"modified":"2021-10-07T17:33:37","modified_gmt":"2021-10-07T09:33:37","slug":"databinding%e8%87%aa%e5%ae%9a%e4%b9%89%e6%96%b9%e6%b3%95%e3%80%81%e5%8f%82%e6%95%b0%e7%bb%91%e5%ae%9a%ef%bc%88bindingadapter%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.jinhaihan.top\/WordPress\/databinding%e8%87%aa%e5%ae%9a%e4%b9%89%e6%96%b9%e6%b3%95%e3%80%81%e5%8f%82%e6%95%b0%e7%bb%91%e5%ae%9a%ef%bc%88bindingadapter%ef%bc%89\/","title":{"rendered":"DataBinding\u81ea\u5b9a\u4e49\u65b9\u6cd5\u3001\u53c2\u6570\u7ed1\u5b9a\uff08BindingAdapter\uff09"},"content":{"rendered":"

\u53c2\u8003\u6587\u6863\uff1a<\/p>\n

https:\/\/blog.csdn.net\/guiying712\/article\/details\/80411597<\/a><\/p>\n

https:\/\/www.jianshu.com\/p\/92a73354d40a<\/a><\/p>\n

\u6709\u4e00\u4e9b\u5c5e\u6027\uff0c\u6bd4\u5982\u76d1\u542c\u5668\uff0c\u5e76\u4e0d\u80fd\u5728xml\u7ed1\u5b9a\uff0c\u4e0b\u9762\u4e3e\u4e24\u4e2a\u4f8b\u5b50<\/p>\n

\u7ed1\u5b9a\u6ca1\u6709setter\u7684\u53c2\u6570<\/h1>\n

android:paddingLeft\u5e76\u6ca1\u6709\u4e0e\u4e4b\u5bf9\u5e94\u7684set\u65b9\u6cd5\uff0c\u4f46\u662f\u6709\u4e2a\u7528\u4e8e\u8bbe\u7f6e\u8be5\u5c5e\u6027\u7684setPadding(left, top, right, bottom)\u65b9\u6cd5\uff0c\u9488\u5bf9\u8fd9\u4e00\u95ee\u9898\uff0c\u4f7f\u7528BindingAdapter\u6ce8\u89e3\u5219\u80fd\u5141\u8bb8\u6211\u4eec\u81ea\u5b9a\u4e49\u8fd9\u4e2a\u5c5e\u6027\u8c03\u7528set\u65b9\u6cd5\u7684\u65b9\u5f0f\u3002<\/p>\n

Android framework\u4e2d\u7c7b\u5df2\u7ecf\u4e3a\u5c5e\u6027\u5efa\u7acb\u4e86BindingAdapter\u6ce8\u89e3\u3002<\/p>\n

\/\/ kotlin\n@BindingAdapter("android:paddingLeft")\n\/\/\u7b2c\u4e00\u4e2a\u53c2\u6570\u4ee3\u8868\u8981\u5bf9View\u64cd\u4f5c\uff0c\u4e4b\u540e\u7684\u53c2\u6570\u548c\u6ce8\u89e3\u7684\u4e00\u4e00\u5bf9\u5e94\nfun setPaddingLeft(view: View, padding: Int) {\n    view.setPadding(padding,\n                view.getPaddingTop(),\n                view.getPaddingRight(),\n                view.getPaddingBottom())\n}<\/code><\/pre>\n
\n
\u7ed1\u5b9aLinsener\u65b9\u6cd5<\/h1>\n
\u4ee5\u4fa7\u6ed1\u680f\u4e3a\u4f8b\uff0c\u8fdb\u884c\u51fd\u6570\u7ed1\u5b9a<\/p>\n
\u9996\u5148\u5728attrs\u81ea\u5b9a\u4e49\u8981\u7ed1\u5b9a\u7684\u51fd\u6570\u540d\u5b57\uff0c\u968f\u4fbf\u662f\u4ec0\u4e48\u90fd\u53ef\u4ee5<\/p>\n
      <attr name="onClosed" format="reference" \/>\n      <attr name="onOpened" format="reference" \/><\/code><\/pre>\n
\u5728\u5e03\u5c40\u6587\u4ef6\u4e2d\u4f7f\u7528\uff1a<\/p>\n
<com.chauthai.swipereveallayout.SwipeRevealLayout\n        android:id="@+id\/swipe"\n        android:layout_width="match_parent"\n        android:layout_height="94dp"\n        app:mode="normal"\n        app:dragEdge="right"\n        binding:onClosed="@{viewModel.\u65b9\u6cd51}"\n        binding:onOpened="@{viewModel.\u65b9\u6cd52}"\/><\/code><\/pre>\n
\u7ed1\u5b9a\u7684\u65b9\u6cd5\u8981\u7528\u8fd9\u79cd\u5199\u6cd5<\/p>\n
var deleteClosed: BindingCommand<*> = BindingCommand<Any?>(BindingAction {\n        Log.e("aaa","deleteClosed")\n    })<\/code><\/pre>\n
\u4f46\u662f\u73b0\u5728xml\u5e76\u4e0d\u77e5\u9053\u4f60\u7ed1\u5b9a\u8fd9\u4fe9\u662f\u5565\uff0c\u4e8e\u662f\u8981\u53bb\u544a\u8bc9\u5b83\u600e\u4e48\u505a<\/p>\n
\u9759\u6001\u51fd\u6570\uff0c\u6ce8\u89e3\u4e2d\u8868\u660e\u4f60\u8981\u7528\u5230\u4ec0\u4e48\u53c2\u6570<\/p>\n
\u65b9\u6cd5\u540d\u7b2c\u4e00\u4e2a\u53c2\u6570\u4ee3\u8868\u7740\u4f60\u8981\u64cd\u4f5c\u7684\u5e03\u5c40\u540d\u79f0<\/p>\n
object BindingAdapter {\n\n    @BindingAdapter(\n        value = ["onOpened", "onClosed"]\n    )\n    \/\/\u6807\u8bb0\u4e3a\u9759\u6001\n        @JvmStatic\n    \/\/\u7b2c\u4e00\u4e2a\u53c2\u6570\u4ee3\u8868\u8981\u5bf9SwipeRevealLayout\u64cd\u4f5c\uff0c\u4e4b\u540e\u7684\u53c2\u6570\u548c\u6ce8\u89e3\u7684\u4e00\u4e00\u5bf9\u5e94\n    \/\/\u8bb0\u5f97\u53c2\u6570\u53ef\u7a7a\n    fun setSwipeRevealLayoutListener(view: SwipeRevealLayout,  onOpened: BindingCommand<*>?, onClosed: BindingCommand<*>?) {\n        \/\/\u6b64\u65f6\u968f\u610f\u8fdb\u884c\u64cd\u4f5c\u8bbe\u7f6e\n        \/\/\u6b64\u4f8b\u5b50\u662f\u4e3a\u4e8b\u4ef6\u8bbe\u5b9a\u76d1\u542c\u7ed1\u5b9a\u51fd\u6570\n        \/\/\u8bbe\u5b9a\u76d1\u542c\u5668\n        view.setSwipeListener(object :SwipeRevealLayout.SwipeListener{\n            override fun onOpened(view: SwipeRevealLayout?) {\n                \/\/\u5f53onOpened\u65f6\u6267\u884c\u7ed1\u5b9a\u7684command onOpened\n                onOpened?.execute()\n            }\n\n            override fun onClosed(view: SwipeRevealLayout?) {\n                onClosed?.execute()\n            }\n\n            override fun onSlide(view: SwipeRevealLayout?, slideOffset: Float) {\n\n            }\n\n        })\n    }\n\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u53c2\u8003\u6587\u6863\uff1a 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