从带有条件的详细活动 recyclerview 打开新活动的方法

Method to open new activity from detail activity recyclerview with conditions

提问人：BUdiAKmal 提问时间：7/29/2022 最后编辑：Vishal VasaniBUdiAKmal 更新时间：7/30/2022 访问量：151

问：

Basic Layout Wireframe, and guide of what I want to ask

我会尽量清楚地解释我的意思，并尽可能多地解释。

*我希望你能从线框图:)理解我的意思

所以从线框图来看，我有 3 个活动。

  1. MainActivity，带有 TabLayout，其中填充了 Fragment，并且其中有一个 RecyclerView，

  2. DetailActivity，其中包含从 MainActivity 的每个 RecyclerView 项带来的数据 ，

  3. WebViewActivity，这将是用户单击 DetaiActivity 中的一个按钮后的最后一个活动，其中包含 与之前选择的每个 RecyclerView 项不同的上下文 用户。

从我描述的线框中，我已经成功打开了“WebViewActivity”，并使用“Button No.2”从“DetailActivity”中根据指定的参数（google.com）加载了URL

我的问题是：

  1. 当用户来时，如何打开 WebViewActivity 并加载“Youtube.com” 从“RecyclerView Item No.2”通过单击“按钮 1” 详细信息内部 活动？。

  2. 当用户来时，如何打开 WebViewActivity 并加载“Gmail.com” 从“RecyclerView Item No.3”通过单击“按钮 1” 详细信息内部 活动？。

这是我未解析的代码：

MainActivity.kt（主活动.kt）

class MainActivity : AppCompatActivity() {


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)


        setUpTabs() // Setup TabLayout


    } // End - OnCreate


    // Start - TabLayout
    private fun setUpTabs() {
        val adapter = ViewPagerAdapter(supportFragmentManager)
        adapter.addFragment(MainTabFragment(), "MainTab")
        viewPager_tabLayout.adapter = adapter
        tabs.setupWithViewPager(viewPager_tabLayout)
    } // End - TabLayout


} // End - Class

DetailActivity.kt （英语）

class DetailActivity : AppCompatActivity() {

    var prodBundle: Bundle? = null // Initialize getString (bundle) from MainActivity
    private var urls = arrayOfNulls<String>(3) // Initialize URL Direction

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_single_product)


        // Start - WebView URL to WebViewActivity
        urls[0] = "google.com"
        urls[1] = "youtube.com"
        urls[2] = "gmail.com"
        // End - WebView URL to WebViewActivity


        initView() // Setup getString from RecyclerView Main Activity


    } // End - OnCreate


    // Start - getString from RecyclerView Main Activity
    fun initView() {
        prodBundle = intent.extras

        ph_titleText.text = prodBundle?.getString("TitleText")
       ph_descText.text = prodBundle?.getString("DescText")
        prodBundle?.getString("ImageURL").let {
            Glide.with(this).asBitmap()
                .load(it)
                .into(ph_urlImage)

            Glide.with(this).asBitmap()
                .load(it)
                .centerCrop()
                .fitCenter()
                .placeholder(R.drawable.ph_img_none)
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                .skipMemoryCache(true)
        }
    } //  End  - getString from RecyclerView Main Activity

    
    // Start - putExtra to WebViewActivity
    fun button2(view: View) {
        val i = Intent(this@DetailActivity, WebViewActivity::class.java)
        i.putExtra("linksWeView", urls[0])
        startActivity(i)
    } // End - putExtra to WebViewActivity

} // End - Class

WebViewActivity.kt

class WebViewActivity : AppCompatActivity() {


    private lateinit var webView: WebView // Initialize WebView


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_webview)


        // Start - Assign getString URL from DetailActivity
        val intent = intent
        val webSite = intent.getStringExtra("linksWebView")
        // End - Assign getString URL from DetailActivity


        // Start - WebView
        webView = findViewById(R.id.wv)

        webView.setWebViewClient(object : WebViewClient() {
            override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
                super.onPageStarted(view, url, favicon)
                view?.visibility = View.INVISIBLE

                if (Build.VERSION.SDK_INT >= 19) {
                    webView.setLayerType(View.LAYER_TYPE_HARDWARE, null)
                } else {
                    webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null)
                }
            }

            override fun onPageFinished(view: WebView?, url: String?) {
                super.onPageFinished(view, url)
                view?.visibility = View.VISIBLE
            }

            // Start - Fix SocialMedia Acces
            override fun shouldOverrideUrlLoading(wv: WebView, url: String): Boolean {
                if (url.startsWith("tel:") || url.startsWith("whatsapp:")) {
                    val intent = Intent(Intent.ACTION_VIEW)
                    intent.data = Uri.parse(url)
                    startActivity(intent)
                    webView.goBack()
                    return true
                }
                return false
            } // End - Fix SocialMedia Acces

        }) // End - WebView


        // Start - WebView Setting
        if (webSite != null) {
            webView.loadUrl(webSite)
        }

        val webSettings = webView.settings
        webSettings.javaScriptEnabled = true // js active
        webSettings.domStorageEnabled = true // componenet load
        webSettings.allowContentAccess = true
        webSettings.loadsImagesAutomatically = true
        webSettings.cacheMode = WebSettings.LOAD_NO_CACHE
        webSettings.setRenderPriority(WebSettings.RenderPriority.HIGH)
        webSettings.setEnableSmoothTransition(true)
        // End - WebView Setting


}// End - OnCreate

  
} // End - Class

MainTabFragment.kt

class MainTabFragment : Fragment() {


    lateinit var maintabfragmentAdapter: MainTabFragmentAdapter  // Initialize Adapter
    private val sLM = StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL) // Initialize layoutManager
    val addMainTabFragmentModelList: MutableList<MainTabFragmentModel> = ArrayList() // Initialize listModel
    private var urlMainTabFragment = arrayOfNulls<String>(2) // Initialize URL Direction WebView

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_maintab, container, false)


    }


    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        // Start - Webview URL to WebViewActivity
        urlMainTabFragment[0] = "https://url1.com"
        urlMainTabFragment[1] = "https://url2.com"
        // End - Webview URL to WebViewActivity


        initViewMainTabFragment() // SetUp initView listModel
        actionMainTabFragment() // SetUp actionMainTabFragment
        iniRefreshListener() // SetUp swipeRefresh


    } // End - OnCreate


    // Start - intView listModel
    private fun initViewMainTabFragment() {
        rv_maintabfragment.layoutManager = sLM
        maintabfragmentAdapter = MainTabFragmentAdapter(requireActivity())
        rv_maintabfragment.adapter = maintabfragmentAdapter

        addMainTabFragmentModelList.add(
            MainTabFragmentModel("https://url1.com/img1.jpg", "TitleText#01", "DescText#01"))
        addMainTabFragmentModelList.add(
           MainTabFragmentModel("https://url1.com/img1.jpg", "TitleText#02", "DescText#02"))
        addMainTabFragmentModelList.add(
            MainTabFragmentModel("https://url1.com/img1.jpg", "TitleText#03", "DescText#03"))
        addMainTabFragmentModelList.add(
            MainTabFragmentModel("https://url1.com/img1.jpg", "TitleText#04", "DescText#04"))

        maintabfragmentAdapter.setMainTabFragment(addMainTabFragmentModelList)
    } // End - intView listModel


    // Start - putExtra to DetailActivity
    fun actionMainTabFragment() {
        maintabfragmentAdapter.setOnClickItemListenerMainTabFragment(object : OnItemClickListener {
            override fun onItemClick(item: View, position: Int) {
                lateinit var i: Intent
                if (position == 0) {
                    i = Intent(context, WebViewActivity::class.java)
                    i.putExtra("linksWebView", urlMainTabFragment[0])
                } else if (position == 3) {
                    i = Intent(context, WebViewActivity::class.java)
                    i.putExtra("linksWebView", urlMainTabFragment[1])
                } else {
                    i = Intent(context, DetailActivity::class.java)
                }
                i.putExtra("TitleText",
                    maintabfragmentAdapter.getMainTabFragment().get(position).titleTtextMainTab
                )
                i.putExtra(
                    "DescText",
                    maintabfragmentAdapter.getMainTabFragment().get(position).descTextMainTab
                )
                i.putExtra(
                    "ImageURL",
                    maintabfragmentAdapter.getMainTabFragment().get(position).imgMainTab
                )
                startActivity(i)
            }
        })
    } // End - putExtra to DetailActivity


} // End - Class

MainTabModel.kt

data class MainTabModel (var imgMainTab: String?, var titleTtextMainTab: String?, var descTextMainTab: String?)

OnItemClickListener.kt

interface OnItemClickListener {
    fun onItemClick(item: View, position:Int)
}

MianTabAdapter.kt

class MainTabAdapter(private val context: Context) :
    RecyclerView.Adapter<MainTabAdapter.MainTabViewHolder>() {

    private val MainTabModel: MutableList<MainTabModel> = mutableListOf()  // Initialize listModel
    private lateinit var onSelectedListenerMainTab: OnItemClickListener // Initialize onItemListener


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MainTabViewHolder {
        return MainTabViewHolder(
            LayoutInflater.from(context).inflate(R.layout.item_maintab_layout, parent, false)
        )
    } // End - onCreateViewHolder

    
    override fun getItemCount(): Int {
        return MainTabModel.size
    }  // End - getItem

    
    override fun onBindViewHolder(holder: MainTabViewHolder, position: Int) {
        holder.maintabBindView(MainTabModel[position])
    } // End - onBindViewHolder

    
    // Start - setMainTab
    fun setMainTab(data: List<MainTabModel>) {
        MainTabModel.clear()
        MainTabModel.addAll(data)
        notifyDataSetChanged()
    } // End - setMainTab

    
    // Start - getMainTab
    fun getMainTab(): MutableList<MainTabModel> {
        return MainTabModel
    } // End - getMainTab

    
    // Start - MainTabViewHolder
    inner class MainTabViewHolder(maintabview: View) : RecyclerView.ViewHolder(maintabview) {
        val imgProdMainTab = maintabview.findViewById<ImageView>(R.id.iv_prodMainTab)
        val cvMainTab: MaterialCardView = maintabview.findViewById(R.id.cv_maintab)
        
        fun maintabBindView(MainTabModel: MainTabModel) {
            MainTabModel.apply {
                val image = MainTabModel.prodImgMainTab
                image.let {
                    Glide.with(itemView.context).asBitmap()
                        .load(it)
                        .into(imgProdMainTab)
                    
                    Glide.with(itemView.context).asBitmap()
                        .load(it)
                        .centerCrop()
                        .fitCenter()
                        .placeholder(R.drawable.ph_img_none)
                        .diskCacheStrategy(DiskCacheStrategy.NONE)
                        .skipMemoryCache(true)
                        .transition(BitmapTransitionOptions.withCrossFade())
                }
            }
        }
        
        // Start - onClick
        init {
            cvMainTab.setOnClickListener { onSelectedListenerMainTab.onItemClick(it, layoutPosition) }
        } // End - onClick
        
    } // End - MainTabBindViewHolder


    // Start - OnItemListener
    fun setOnClickItemListenerMainTab(onItemClickListener: OnItemClickListener) {
        this.onSelectedListenerMainTab = onItemClickListener
    } // End - OnItemListener


} // End - Class

非常感谢您抽出宝贵时间，这肯定会花费很多精力来帮助我解决这个案子。:)

android kotlin android-recyclerview 条件语句 参数传递

评论

答：

0赞 Ticherhaz FreePalestine 7/29/2022 #1

您的问题中有太多代码，但到目前为止，我现在了解您想从点击事件继续到 .RecyclerViewWebViewActivity

你只需要简化它。您可以执行如下操作。修改您添加的新属性，即 .MainTabModellinkUrl

data class MainTabModel (
    var imgMainTab: String?, 
    var titleTtextMainTab: String?, 
    var descTextMainTab: String?, 
    var linkUrl: String?
)

之后，当您想从 中继续时，您只需要调用 .如下所示的示例（在 Recyclerview 单击的按钮处）。WebViewActivityRecyclerViewlinkUrl

val intent = Intent(this, WebViewActivity::class.java)
intent.putExtra("linkUrl", it.linkUrl)
startActivity(intent)

然后，在你的 ，只需检查是否包含你的。WebViewActivitygetIntentlinkUrl

我希望你能理解。

评论

0赞 BUdiAKmal 7/29/2022
感谢您的参与，但我在这里的意思是“当用户单击RecyclerView上的项目时，用户将转到” DetailActivity。kt“并带来 url 根据参数”，用户点击“DetailActivity.kt”上的“按钮 1”后，用户将转发并加载“WebViewActivity”上的“Url”。
0赞 Ticherhaz FreePalestine 7/30/2022
@BUdiAKmal 我仍然不明白你想做什么......
0赞 BUdiAKmal 7/30/2022
你能检查一下吗，我在那里简化了问题并更改了线框。谢谢
0赞 Ticherhaz FreePalestine 7/30/2022
@BUdiAKmal你可以查看@Razvan的评论，我不知道.除此之外，我看不出任何问题。 .那么问题出在哪里呢？只需对 URL 执行相同的操作I've been successfully pass the data, but how about the URL?
0赞 BUdiAKmal 7/30/2022
是的，我可以，如果只是为了传递数据。但是如何从 DetailActivity 转发到 WebViewActivity？.

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