下面貼代碼 兩個布局檔案和java代碼
請前輩指點
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".upd">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/upd_list">
</ListView>
</LinearLayout>
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginLeft="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="姓名："
android:textSize="18sp" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/dianming_edname" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="簽到次數"
android:textSize="18sp" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/dianming_edqd"
android:inputType="number"
android:textSize="18sp"/>
<TextView
android:layout_marginLeft="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="缺勤次數："
android:textSize="18sp"
/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/dianming_edqq"
android:inputType="number"
android:textSize="18sp"/>
<TextView
android:layout_marginLeft="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="病假次數："
android:textSize="18sp" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/dianming_edbj"
android:inputType="number"
android:textSize="18sp"/>
</LinearLayout>
</LinearLayout>
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package com.hbsi.jieke;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListView;
import com.hbsi.jieke.bean.User;
import com.hbsi.jieke.dao.UserDao;
import java.util.ArrayList;
import java.util.List;
public class upd extends AppCompatActivity {
private UserDao dao;
ListView listView;
ViewHolder holder = null;
MyAdapter2 myAdapter2;
List<User> lists;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upd);
dao = new UserDao(this);
myAdapter2 = new MyAdapter2();
listView = findViewById(R.id.upd_list);
listView.setAdapter(myAdapter2);
// lists = dao.show();
}//onCreate
class MyAdapter2 extends BaseAdapter {
@Override
public int getCount() {
return 0;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
holder = new ViewHolder();
convertView = getLayoutInflater().inflate(R.layout.dianming_item,null );
holder.edname = convertView.findViewById(R.id.dianming_edname);
convertView.setTag(holder);
}else {
holder = (ViewHolder) convertView.getTag();
}
return convertView;
}
}//MyAdapter2
class ViewHolder{
EditText edname, edqd, edqq, edbj;
}
}
uj5u.com熱心網友回復：
listview已經很老了。看看recyclerview吧uj5u.com熱心網友回復：
必須讓用這個，幫忙看看，不會寫了
uj5u.com熱心網友回復：
你運行下代碼，看看還差哪個沒完成就自己慢慢除錯寫一下唄uj5u.com熱心網友回復：
getcount不是沒寫？uj5u.com熱心網友回復：
我只是想把這個自定義布局 加載出來。不知道怎么寫了uj5u.com熱心網友回復：
各位大哥 幫幫忙uj5u.com熱心網友回復：
看看必須讓用這個，幫忙看看，不會寫了
uj5u.com熱心網友回復：
getCount系結的條目的數目沒有寫,而且你也沒有傳入item里設定的東西吧.你參考這個https://www.jianshu.com/p/24833a2cffd1設定吧
uj5u.com熱心網友回復：
參考一下我的自定義配接器Adapter.java，這里:我用#CSDN#這個app發現了有技術含量的博客，小伙伴們求同去《_自定義Adapter_學生注冊（無資料庫）》, 一起來圍觀吧 https://blog.csdn.net/cungudafa/article/details/85017497uj5u.com熱心網友回復：
問題出在沒有把串列的list資料傳入MyAdapter2 ；以下供參考：
private Context mConext;
private List<String> mData;
//建構式引入兩個引數
public MyAdapter(Context mConext , List<String> mData){
mLayoutInflater = LayoutInflater.from(mConext);
this.mConext = mConext;
this.mData = mData;
}
@Override
public int getCount() {
//資料不為空則回傳資料的大小
return (mData == null) ? 0 : mData.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
//回傳資料
return mData.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
//回傳資料的地址
return position;
}
uj5u.com熱心網友回復：
給你簡單寫了個例子，你看看吧private Context context;
private List<UserAccount> accountList = new ArrayList<>();
public UserAccountAdapter(Context context, List<UserAccount> list) {
this.context = context;
this.accountList = list;
}
@Override
public int getCount() {
return accountList.size();
}
@Override
public Object getItem(int i) {
return accountList.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(final int i, View view, ViewGroup viewGroup) {
ViewHolder viewHolder;
UserAccount userAccount = accountList.get(i);
if (view == null) {
viewHolder = new ViewHolder();
view = LayoutInflater.from(context).inflate(R.layout.account_list_item, null);
viewHolder.tvAccount = view.findViewById(R.id.tv_item_account);
viewHolder.tvPwd = view.findViewById(R.id.tv_item_pwd);
viewHolder.btnDel = view.findViewById(R.id.btn_del);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) view.getTag();
}
viewHolder.tvAccount.setText("賬號：" + userAccount.getAccount());
viewHolder.tvPwd.setText("密碼：" + userAccount.getPassword());
viewHolder.btnDel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
accountList.remove(i);
notifyDataSetChanged();
SharedPreferences spRegister = context.getSharedPreferences("isRegister", context.MODE_PRIVATE);
SharedPreferences.Editor editorRegister = spRegister.edit();
editorRegister.clear();
editorRegister.commit();
SharedPreferences sharedList = context.getSharedPreferences("UserList", context.MODE_PRIVATE);
SharedPreferences.Editor editorList = sharedList.edit();
editorList.clear();
editorList.commit();
}
});
return view;
}
class ViewHolder {
TextView tvAccount;
TextView tvPwd;
Button btnDel;
}
uj5u.com熱心網友回復：
配接器沒有初始化控制元件轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/83212.html
標籤：Android
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