Question

我已经为GridView ItemClickListener尝试了以下实施，该项目编译正常，但当我点击GridView项时，Toast不显示我的消息，＆＃ 39;错了？

Java点击处理程序

public class MultiChoiceActions {

    public void onItemClick(View view, int position, List<FieldOption> objectList) {

        boolean currentValue = objectList.get(position).isChecked();
        objectList.get(position).setChecked(!currentValue);

        Toast.makeText(view.getContext(), "!currentValue " + (!currentValue) , Toast.LENGTH_SHORT).show();
    }
}

XML Layout EDITED

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <data>
        <variable
            name="vm"
            type="br.com.viewluck.viewmodel.MultiChoiceViewModel"/>

        <variable
            name="adapter"
            type="br.com.viewluck.viewmodel.MultiChoiceAdapter"/>

        <variable
            name="actions"
            type="br.com.viewluck.viewmodel.MultiChoiceActions"/>
    </data>

    <android.support.v7.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="2dp"
        android:orientation="vertical">

        <android.support.v7.widget.AppCompatTextView
            android:id="@+id/txt_label"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@{vm.fieldLabel}"
            android:textSize="14sp"
            android:textStyle="bold" />

        <GridView
            android:id="@+id/gd_multiple_choice"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:choiceMode="multipleChoice"
            app:options="@{vm.objectList}"
            app:OnItemClickListener="@{(parent, view, position,id)->actions.onItemClick(view, position, vm.answer)}"
            android:numColumns="auto_fit" />

    </android.support.v7.widget.LinearLayoutCompat>
</layout>

任何建议都表示赞赏！

Answer 1

我猜你可能忘了将它从activity / fragment

绑定

binding.setActions(listener)

Android GridView DataBinding - ItemClickListener不会触发

1 个答案: