#define 小毛驢 xml

使用方法

Fragment與ViewPager搭配搪桂，實現(xiàn)翻頁蓖谢，實現(xiàn)每頁多個控件

1. 寫好每個item的小毛驢文件和數(shù)據(jù)傳送類
2. 繼承Fragment類朋蔫，自定義一個fragment

class BlankFragment : Fragment() {
    var ctx:Context? = null
    var mPosition:Int = 0
    var mInageId:Int = 0
    var mDesc:String = ""
    var title:String = ""

    val colorNames = listOf<String>("紅色","黃色","綠色","青色","藍色")
    val colors = intArrayOf(Color.RED, Color.YELLOW, Color.GREEN, Color.CYAN, Color.BLUE)
    var mSeq:Int = 0
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        ctx = activity
        if (arguments != null) {
            mPosition = arguments!!.getInt("position", 0)
            mInageId = arguments!!.getInt("image_id", 0)
            mDesc = arguments!!.getString("desc")
            title = arguments!!.getString("title")
        }//獲取數(shù)據(jù)
        val view = inflater.inflate(R.layout.show_info, container, false)

        view.findViewById<ImageView>(R.id.imageView).setImageResource(mInageId)
        view.findViewById<TextView>(R.id.textView).text = mDesc
        //顯示數(shù)據(jù)
        return view
    }

    companion object {
        fun newInstance(position:Int, image_id:Int, desc:String, title:String) : BlankFragment {//調(diào)用這個函數(shù)找都，創(chuàng)建新的fragment

            val fragment = BlankFragment()
            val bundle = Bundle()
            bundle.putInt("position", position)
            bundle.putInt("image_id", image_id)
            bundle.putString("desc", desc)
            bundle.putString("title", title)
            fragment.arguments = bundle
            return fragment
        }
    }
}

3. ViewPager的適配器

class infoPagerAdapter(val fragManger: FragmentManager, val itemList:MutableList<itemInfo>) : FragmentStatePagerAdapter(fragManger) {
    override fun getCount(): Int = itemList.size
    override fun getItem(p0: Int): Fragment {
        val item = itemList[p0]
        return BlankFragment.newInstance(p0, item.pic, item.desc, item.name)
    }

    override fun getPageTitle(position: Int): CharSequence? {
        return itemList[position].name
    }
}

4.給ViewPager添加適配器

class MainActivity : FragmentActivity(){
//這個時候萝究，繼承的是FragmentActivity
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        var vp:ViewPager = findViewById(R.id.vp)
        var title: PagerTabStrip = findViewById(R.id.title)
        val list:MutableList<itemInfo> = mutableListOf()
        //省略中間給list賦值的過程
        vp.adapter = infoPagerAdapter(supportFragmentManager, list)
        vp.currentItem = 0
    }
}