Question

我有一个customAdapter类和一个listView。我使用3个textviews和一个imageButton制作了single_row布局。现在我的问题是我如何获得数据库ID字段，只是点击图像按钮并忽略整行的点击？我知道我可以获得身份证明：

mListView.onItemClickListener = AdapterView.OnItemClickListener { adapterView, view, position, id ->
               view.delete.setOnClickListener(){
                   Toast.makeText(context,""+id,Toast.LENGTH_SHORT).show()
              }

但这只有在我点击整行时才有效。我在xml的根目录中尝试了android:descendantFocusability="blocksDescendants"，在imageButton节点中尝试了android:focusable="false"，并且在识别整行时无法识别imageButton。只有我使用button.onClickListener()... 点击被识别。但那样我不知道如何获得身份证。

我的适配器类代码：

class MyAdapter(activity: Activity, context: Context, cursor: Cursor) : CursorAdapter(context, cursor, true) {

    var inflater: LayoutInflater
    lateinit var mListView: ListView

    init {
        this.inflater = LayoutInflater.from(context)
        mListView = activity.listView
    }

    override fun newView(context: Context?, cursor: Cursor?, parent: ViewGroup?): View {
        val view = LayoutInflater.from(context).inflate(R.layout.single_row, parent, false)

        return view;
    }
override fun bindView(view: View, context: Context, cursor: Cursor) {
        val latitude = view.findViewById(R.id.latitude) as TextView
        val longtitude = view.findViewById(R.id.longtitude) as TextView
        val date = view.findViewById(R.id.date) as TextView
        val asu = view.findViewById(R.id.asu) as TextView

        latitude.setText(cursor.getString(cursor.getColumnIndex(Constants.Signal.LATITUDE)))
        longtitude.setText(cursor.getString(cursor.getColumnIndex(Constants.Signal.LONGTITUDE)))
        date.setText(cursor.getString(cursor.getColumnIndex(Constants.Signal.DATE)))
        asu.setText(cursor.getString(cursor.getColumnIndex(Constants.Signal.ASU)))

    }
}

我的single_row布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:id="@+id/list_item"
    android:layout_height="match_parent"
    android:descendantFocusability="blocksDescendants">


    <TextView
        android:id="@+id/latitude"
        android:layout_width="23dp"
        android:layout_height="53dp"
        android:layout_weight="0.20"
        android:text="latitude"
        android:gravity="center" />

    <TextView
        android:id="@+id/longtitude"
        android:layout_width="23dp"
        android:layout_height="53dp"
        android:layout_weight="0.20"
        android:text="longtitude"
        android:gravity="center" />

    <TextView
        android:id="@+id/date"
        android:layout_width="23dp"
        android:layout_height="53dp"
        android:layout_weight="0.20"
        android:gravity="center"
        android:text="date" />

    <TextView
        android:id="@+id/asu"
        android:layout_width="23dp"
        android:layout_height="53dp"
        android:layout_weight="0.20"
        android:gravity="center"
        android:focusable="false"
        android:text="asu"/>

    <ImageButton
        android:id="@+id/delete"
        android:layout_width="0.23dp"
        android:layout_height="53dp"
        android:layout_weight="0.20"
        android:focusable="false"
        android:src="@android:drawable/ic_menu_delete" />
</LinearLayout>

Answer 1

您正在使用游标适配器，您应该使用ArrayAdapter。 Here is why custom-cursoradapter-and-why-not-use 和example of ArrayAdapter

如何在使用kotlin单击listView项目中的imageButton之后获取DB id

1 个答案: