我在安卓
新的我的應用程序的結構包括:
activity_main.xml中:如何獲得行的值在列表視圖中的Android
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.example.reyhane.myapplication.MainActivity">
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.design.widget.CoordinatorLayout>
cell.xml
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layoutDirection="rtl">
<TableRow
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/nationalCode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="2"
android:layout_marginLeft="8dp"
android:textStyle="bold" />
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="2"
android:layout_marginLeft="8dp"
android:textStyle="bold" />
<TextView
android:id="@+id/lastName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="2"
android:layout_marginLeft="8dp"
android:textStyle="bold" />
<Button
android:id="@+id/delete_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="2"
android:text="حذف" />
</TableRow>
</TableLayout>
MainActivity.java
package com.example.reyhane.myapplication;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Gravity;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends Activity {
public ListView list;
public ArrayList<Person> countries = new ArrayList<Person>();
public ListAdapter adapter;
public void fillPerson(String nationalCode) {
Person person = new Person();
person.setNationalCode(nationalCode);
person.setName("reza");
person.setLastName("hghgh");
person.setPhone("231345");
countries.add(person);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
fillPerson("6768767");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView) findViewById(R.id.list);
adapter = new ListAdapter(this);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
Object o = list.getItemAtPosition(position);
Person person = (Person) o;
openAddPersonActivity(person.getNationalCode());
}
});
}
public void openAddPersonActivity(String nationalCode) {
Intent i = new Intent(MainActivity.this, AddPerson.class);
if (nationalCode != null)
i.putExtra("nationalCode", nationalCode);
startActivity(i);
}
}
ListAdapter.java
package com.example.reyhane.myapplication;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TableLayout;
import android.widget.TextView;
/**
* Created by reyhane on 11/24/16.
*/
public class ListAdapter extends BaseAdapter {
MainActivity mainActivity;
ListAdapter(MainActivity mainActivity) {
this.mainActivity = mainActivity;
}
@Override
public int getCount() {
return mainActivity.countries.size();
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
static class ViewHolderItem {
TextView nationalCode;
TextView name;
TextView lastName;
TextView phone;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolderItem holder = new ViewHolderItem();
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mainActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.cell, null);
holder.nationalCode = (TextView) convertView.findViewById(R.id.nationalCode);
holder.name = (TextView) convertView.findViewById(R.id.name);
holder.lastName = (TextView) convertView.findViewById(R.id.lastName);
convertView.setTag(holder);
} else {
holder = (ViewHolderItem) convertView.getTag();
}
Button deleteBtn = (Button) convertView.findViewById(R.id.delete_btn);
holder.nationalCode.setText(this.mainActivity.countries.get(position).getNationalCode());
holder.name.setText(this.mainActivity.countries.get(position).getName());
holder.lastName.setText(this.mainActivity.countries.get(position).getLastName());
deleteBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//do something
mainActivity.countries.remove(position); //or some other task
notifyDataSetChanged();
}
});
return convertView;
}
}
我的問題:
正如你在我的應用程序中看到,我在列表視圖的人名單。 在這個表格中,我添加人員並刪除並編輯它。
我可以刪除listview中的每條記錄,但是我無法獲得listview中每個reacord的人的nationalCode值,以便通過這個nationalcode從數據庫中獲取人員並對其進行編輯。
我該怎麼辦?
請幫我
做到這一點'Toast.makeText(MainActivity.this, 「國家代碼是:」 +列表。 get(position).getNationalCode(),Toast.LENGTH_SHORT).show();'這就是你應該如何獲得國家代碼。 – 2016-12-15 08:15:12