如何在Android中使用RecylerView實現(xiàn)聊天框效果?針對這個問題,這篇文章詳細介紹了相對應(yīng)的分析和解答,希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
創(chuàng)新互聯(lián)專注于義烏網(wǎng)站建設(shè)服務(wù)及定制,我們擁有豐富的企業(yè)做網(wǎng)站經(jīng)驗。 熱誠為您提供義烏營銷型網(wǎng)站建設(shè),義烏網(wǎng)站制作、義烏網(wǎng)頁設(shè)計、義烏網(wǎng)站官網(wǎng)定制、微信小程序定制開發(fā)服務(wù),打造義烏網(wǎng)絡(luò)公司原創(chuàng)品牌,更為您提供義烏網(wǎng)站排名全網(wǎng)營銷落地服務(wù)。
1、activity_main.xml的代碼如下:
2、layout_item_content.xml的代碼如下:
3、RecyclerViewAdapter.java的代碼如下:
package com.deepreality.recyclerviewdemo; import android.content.Context; import android.support.annotation.NonNull; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.TextView; import java.util.List; public class RecyclerViewAdapter extends RecyclerView.Adapter{ private Context mContext; private List tbChatContentList; private Tb_ChatContent tb_chatContent; static class ViewHolder extends RecyclerView.ViewHolder { private LinearLayout lLayoutReceive, lLayoutSend; private TextView tvReceive, tvSend; public ViewHolder(View itemView) { super(itemView); lLayoutReceive = itemView.findViewById(R.id.Layout_Item_Content_lLayoutReceive); lLayoutSend = itemView.findViewById(R.id.Layout_Item_Content_lLayoutSend); tvReceive = itemView.findViewById(R.id.Layout_Item_Content_tvContentReceive); tvSend = itemView.findViewById(R.id.Layout_Item_Content_tvContentSend); } } public RecyclerViewAdapter(Context mContext, List tbChatContentList) { this.mContext = mContext; this.tbChatContentList = tbChatContentList; } @NonNull @Override public RecyclerViewAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View view = LayoutInflater.from(mContext).inflate(R.layout.layout_item_content, parent, false); ViewHolder viewHolder = new ViewHolder(view); return viewHolder; } @Override public void onBindViewHolder(@NonNull RecyclerViewAdapter.ViewHolder holder, int position) { tb_chatContent = tbChatContentList.get(position); if (tb_chatContent.getType() == 0) { holder.lLayoutReceive.setVisibility(View.VISIBLE); holder.lLayoutSend.setVisibility(View.GONE); holder.tvReceive.setText(tb_chatContent.getContent()); } else { holder.lLayoutReceive.setVisibility(View.GONE); holder.lLayoutSend.setVisibility(View.VISIBLE); holder.tvSend.setText(tb_chatContent.getContent()); } } @Override public int getItemCount() { return tbChatContentList.size(); } }
4、MainActivity.java的代碼如下:
package com.deepreality.recyclerviewdemo; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.View; import android.widget.Button; import android.widget.EditText; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Context mContext; private RecyclerView rViewChat; private EditText etContent; private Button btnSend; private ListtbChatContentList; private Tb_ChatContent tb_chatContent; private RecyclerViewAdapter recyclerViewAdapter; private String[] arrayContents = new String[]{"How are you", "Fine,Thank you.", "How are you" , "Fine,Thank you.", "How are you", "Fine,Thank you."}; private int[] arrayTypes = new int[] {0, 1, 0, 1, 0, 1}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); baseDataInit(); bindViews(); viewsAddListener(); viewsDataInit(); } private void baseDataInit() { mContext = this; tbChatContentList = new ArrayList<>(); } private void bindViews() { rViewChat = findViewById(R.id.Main_rView); etContent = findViewById(R.id.Main_etContent); btnSend = findViewById(R.id.Main_btnSend); } private void viewsAddListener() { btnSend.setOnClickListener(this); } private void viewsDataInit() { rViewSetAdapter(); } private void rViewSetAdapter() { for (int i = 0; i < arrayContents.length; i++) { tb_chatContent = new Tb_ChatContent(arrayContents[i], arrayTypes[i]); tbChatContentList.add(tb_chatContent); } //設(shè)置RecylerView的排列方式(線性,網(wǎng)格,瀑布流三種) LinearLayoutManager linearLayoutManager = new LinearLayoutManager(mContext); rViewChat.setLayoutManager(linearLayoutManager); //創(chuàng)建并綁定數(shù)據(jù)適配器 recyclerViewAdapter = new RecyclerViewAdapter(mContext, tbChatContentList); rViewChat.setAdapter(recyclerViewAdapter); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.Main_btnSend: { tb_chatContent = new Tb_ChatContent(etContent.getText().toString(), Tb_ChatContent.TYPE_SEND); tbChatContentList.add(tb_chatContent); //數(shù)據(jù)刷新 recyclerViewAdapter.notifyDataSetChanged(); //滑動到某一位置 rViewChat.smoothScrollToPosition(tbChatContentList.size() - 1); break; } default:break; } } }
Android是一種基于Linux內(nèi)核的自由及開放源代碼的操作系統(tǒng),主要使用于移動設(shè)備,如智能手機和平板電腦,由美國Google公司和開放手機聯(lián)盟領(lǐng)導(dǎo)及開發(fā)。
關(guān)于如何在Android中使用RecylerView實現(xiàn)聊天框效果問題的解答就分享到這里了,希望以上內(nèi)容可以對大家有一定的幫助,如果你還有很多疑惑沒有解開,可以關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道了解更多相關(guān)知識。