如何在列表视图中添加 EditText 并在所有行中动态获取其值? [英] How to add EditText in listview and get its value dynamically in all the rows?

问题描述

我在 listView 中有 Checkbox 和 EditText 以及一个 Textview.它从列表中获取文本视图的值.复选框将被动态检查.同样，EditText 也可以动态输入.现在我的问题是，当我在编辑文本中输入文本后滚动列表视图(向上和向下)时，我无法获得键入的值.我也喜欢那个复选框.但是使用该位置，我将其设置正确.我不知道如何将 EditText 值正确设置为列表.请帮我.这是我的代码:

I have Checkbox and EditText and a Textview in a listView. It gets value for the text view from a list. Checkbox will be checked dynamically. In the same way EditText also can be entered dynamically. Now my problem is, When i scroll the list view (up and down) after entering the text in the Edit text, I could not get the typed value. I check the check box also like that. But using the position, I set it correct. I Could not know How to set the EditText value to the list properly. Please help me. Here is my code:

main.xml:(用于启动的主 xml)

main.xml: (Main xml for launch)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ListView
android:id="@+id/my_list"
android:layout_width="fill_parent"
android:layout_height="250px" />
<Button 
android:text="Save" 
android:id="@+id/btnSave" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"/>

</LinearLayout>

row.xml: (ListView Row)

row.xml: (ListView Row)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<TextView
android:id="@+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="30sp"/>

<CheckBox
android:id="@+id/check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<EditText 
android:text=""
android:id="@+id/txtAddress"
android:layout_width="150px"
android:layout_height="wrap_content"/>
</LinearLayout>

Model.Java:(是POJO类)

Model.Java: (It is the POJO class)

package com.checkboxlistview;

public class Model {

private String name;
private boolean selected;
private String address;

public String getAddress() {
    return address;
}

public void setAddress(String address) {
    this.address = address;
}

public void setName(String name) {
    this.name = name;
}

public Model(String name) {
    this.name = name;
}

public String getName() {
    return name;
}

public boolean isSelected() {
    return selected;
}

public void setSelected(boolean selected) {
    this.selected = selected;
}

}

MyAdapter.Java:(这用于使用转换器和持有人在列表视图中保存视图)

MyAdapter.Java: (This is used to Hold the view in the list view using the converter and holder)

package com.checkboxlistview;

import java.util.List;
import android.app.Activity;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.TextView;

public class MyAdapter extends ArrayAdapter<Model> implements TextWatcher {

private final List<Model> list;
private final Activity context;
int listPosititon;

public MyAdapter(Activity context, List<Model> list) {
    super(context, R.layout.row, list);
    this.context = context;
    this.list = list;
}

static class ViewHolder {
    protected TextView text;
    protected CheckBox checkbox;
    protected EditText address;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    listPosititon = position;
    ViewHolder viewHolder = null;
    if (convertView == null) {
        LayoutInflater inflator = context.getLayoutInflater();
        convertView = inflator.inflate(R.layout.row, null);
        viewHolder = new ViewHolder();
        viewHolder.text = (TextView) convertView.findViewById(R.id.label);
        viewHolder.checkbox = (CheckBox) convertView
                .findViewById(R.id.check);
        viewHolder.address = (EditText) convertView
                .findViewById(R.id.txtAddress);
        viewHolder.checkbox
                .setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); 
//Here we get the position that we have  set for the checkbox using setTag.
list.get(getPosition).setSelected(
buttonView.isChecked()); 
// Set the value of checkbox to maintain its state.
}
});
        viewHolder.address.addTextChangedListener(this);

        convertView.setTag(viewHolder);
        convertView.setTag(R.id.label, viewHolder.text);
        convertView.setTag(R.id.check, viewHolder.checkbox);
        convertView.setTag(R.id.txtAddress, viewHolder.address);
    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }
    viewHolder.checkbox.setTag(position); // This line is important.

    viewHolder.text.setText(list.get(position).getName());
    viewHolder.checkbox.setChecked(list.get(position).isSelected());
    if (list.get(position).getAddress() != null) {
        viewHolder.address.setText(list.get(position).getAddress() + "");
    } else {
        viewHolder.address.setText("");
    }

    return convertView;
}

@Override
public void afterTextChanged(Editable s) {
    list.get(listPosititon).setAddress(s.toString());
}

@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
        int arg3) {
    // TODO Auto-generated method stub

}

@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
    // TODO Auto-generated method stub

}
}

MainActivity.java(这是活动):

MainActivity.java (This is the activity):

package com.checkboxlistview;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity { 
 ListView listView;
 Button btnSave;
    ArrayAdapter<Model> adapter;
    List<Model> list = new ArrayList<Model>();

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);

        listView = (ListView) findViewById(R.id.my_list);
        btnSave = (Button)findViewById(R.id.btnSave);
        adapter = new MyAdapter(this,getModel());
        listView.setAdapter(adapter);
        btnSave.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                for (int i = 0; i < list.size(); i++) {
                    Toast.makeText(getBaseContext(), "Name : "+list.get(i).getName() +" Selected: "+list.get(i).isSelected(), Toast.LENGTH_SHORT).show();

                }
            }
        });
    }


    private List<Model> getModel() {
        list.add(new Model("Linux"));
        list.add(new Model("Windows7"));
        list.add(new Model("Suse"));
        list.add(new Model("Eclipse"));
        list.add(new Model("Ubuntu"));
        list.add(new Model("Solaris"));
        list.add(new Model("Android"));
        list.add(new Model("iPhone"));
        list.add(new Model("Java"));
        list.add(new Model(".Net"));
        list.add(new Model("PHP"));
        return list;
    }
}

代码没有错误.它运行良好.即使我上下滚动，我也可以保持复选框的位置并显示在相同的位置.但我无法正确获取和设置 EditText 值.请帮帮我.提前致谢.

There is no error in the code. It runs well. I could maintain the checkbox position and display at the same position even I scroll up and down. But I could not get and set the EditText value properly. Please Help me out. Thanks in advance.

推荐答案

您可以使用自定义列表视图来实现这一点.

you can achieve this using the custom list view.

找到带有edittext的listview的例子是here

find the example of listview with edittext is here

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