EasyAdapterForRecyclerView-kotlin

介绍

EasyAdapter是用于RecyclerView的适配器，在原有的适配器基础上可支持设置点击模式、单选和多选模式，并监听相应的事件。在多选模式下，可设置最大可选数量，以及提供了全选、反选等接口。

EasyAdapter的示例代码

主要是给RecyclerView设置一个继承了EasyAdapter的适配器，适配器的用法跟官方提供的适配器基本一样。

...

recyclerView.layoutManager = layoutManager
val data: Array<String> = arrayOf("篮球", "足球", "羽毛球", "乒乓球", "排球", "橄榄球", "棒球")

// 创建一个支持多选的适配器
easyAdapter = object : EasyAdapter<MySelectionHolder>(this, Mode.MULTI_SELECT) {
    override fun getItemCount(): Int {
        return data.size
    }

    // 创建ViewHolder
    override fun whenCreateViewHolder(parent: ViewGroup?, viewType: Int): MySelectionHolder {
        return MySelectionHolder(View.inflate(this@MainActivity, R.layout.item_string, null))
    }

    // 绑定数据
    override fun whenBindViewHolder(holder: MySelectionHolder, position: Int) {
        holder.textView.text = data[position]
    }
}

// 设置点击监听器
easyAdapter.setOnItemClickedListener { it ->
    Toast.makeText(this, "clicked:" + it, Toast.LENGTH_SHORT).show()
}

// 设置单选监听器
easyAdapter.onSingleSelectListener = object : EasyAdapter.OnSingleSelectListener {
    override fun onSelected(position: Int) {
        Toast.makeText(this@MainActivity, "selected:$position", Toast.LENGTH_SHORT).show()
    }

}

// 设置多选监听器
easyAdapter.onMultiSelectListener = object : EasyAdapter.OnMultiSelectListener {
    override fun onSelected(selectionMode: EasyAdapter.SelectionMode, selectedSet: Set<Int>) {
       when (selectionMode) {
           EasyAdapter.SelectionMode.SELECT_ALL
           -> Toast.makeText(this@MainActivity, "select all", Toast.LENGTH_SHORT).show()
    
           EasyAdapter.SelectionMode.UNSELECT_ALL
           -> Toast.makeText(this@MainActivity, "unselect all", Toast.LENGTH_SHORT).show()
    
           EasyAdapter.SelectionMode.REVERSE_SELECTED
           -> Toast.makeText(this@MainActivity, "reverse selected", Toast.LENGTH_SHORT).show()
       }
   
    }
    override fun onSelected(position: Int, isSelected: Boolean) {
        Toast.makeText(this@MainActivity, "selected:$position $isSelected", Toast.LENGTH_SHORT).show()
    }

    override fun onOutOfMax(position: Int) {
        Toast.makeText(this@MainActivity, "onOutOfMax:" + easyAdapter.maxSelectionCount, Toast.LENGTH_SHORT).show()
    }
}

recyclerView.adapter = easyAdapter

//设置模式
// easyAdapter.mode = EasyAdapter.Mode.CLICK // 点击
// easyAdapter.mode = EasyAdapter.Mode.SINGLE_SELECT // 单选
// easyAdapter.mode = EasyAdapter.Mode.MULTI_SELECT // 多选
// easyAdapter.maxSelectionCount = 10 // 多选时的最大可选数
...

更新信息

v1.1(2)
1. 新增item长按监听
2. 新增多选操作监听
3. 修复bugs

1993hzw/EasyAdapterForRecyclerView-kotlin

EasyAdapterForRecyclerView-kotlin

介绍

EasyAdapter的示例代码

更新信息