从列表视图baseadapter得到复选框 [英] get check box from listview baseadapter
本文介绍了从列表视图baseadapter得到复选框的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有列表视图布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="100" >
<ListView
android:id="@+id/listInbox"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="#b5b5b5"
android:dividerHeight="1dp"
android:layout_weight="20"
android:listSelector="@drawable/list_selector" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="80"
android:orientation="horizontal" >
<Button
android:id="@+id/bdelete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:enabled="false"
android:text="@string/delete_selected" />
</LinearLayout>
</LinearLayout>
和这是该列表视图布局适配器
and This is the layout adapter for this list view
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/list_selector"
android:orientation="horizontal"
android:padding="5dip" >
<!-- ListRow Left sied Thumbnail image -->
<LinearLayout
android:id="@+id/thumbnail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginRight="5dip"
android:background="@drawable/image_bg"
android:padding="3dip" >
<ImageView
android:id="@+id/list_image"
android:layout_width="50dip"
android:layout_height="50dip" />
</LinearLayout>
<!-- Title Of Song -->
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/thumbnail"
android:layout_toRightOf="@+id/thumbnail"
android:text="Title"
android:textColor="#040404"
android:textSize="15dip"
android:textStyle="bold"
android:typeface="sans" />
<!-- Artist Name -->
<TextView
android:id="@+id/artist"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/title"
android:layout_marginTop="1dip"
android:layout_toRightOf="@+id/thumbnail"
android:gravity="left"
android:text="Sender"
android:textColor="#343434"
android:textSize="15sp" />
<!-- Rightend Duration -->
<!-- Rightend Arrow -->
<ImageView
android:id="@+id/ivArraw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:src="@drawable/url" />
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/artist"
android:layout_alignBottom="@+id/artist"
android:layout_alignRight="@+id/artist"
android:visibility="invisible"
/>
</RelativeLayout>
和在我的活动定义了什么适配器
and that what the adapter defined in my activity
lv.setAdapter(new ImageInboxAdapter(inbox.this, bitmap, messageNo, messageTitle, senderId, senderName,selected));
这就是baseadapter code
and this is the baseadapter code
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class ImageNewsAdapter extends BaseAdapter{
Context context;
String[] newsNo,title_news;
Bitmap[] bitmap;
public ImageNewsAdapter(Context context,String[] newsNo,String[] title_news, Bitmap[] bitmap ) {
this.context=context;
this.newsNo=newsNo;
this.title_news=title_news;
this.bitmap=bitmap;
// TODO Auto-generated constructor stub
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return title_news.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if(convertView==null){
gridView=new View(context);
gridView=inflater.inflate(R.layout.custom_news, null);
}else{
gridView = (View) convertView;
}
TextView tv=(TextView)gridView.findViewById(R.id.tvTitle);
tv.setText(title_news[position]);
/*RelativeLayout rlImageMain=(RelativeLayout)gridView.findViewById(R.id.RlImageTitle);
rlImageMain.setBackground(new BitmapDrawable(bitmap[position]));
*/
ImageView ivMain= (ImageView)gridView.findViewById(R.id.ivMain);
ivMain.setImageBitmap(bitmap[position]);
return gridView;
}
}
我想从复选框选中获得价值并将其返回到我的活动问题。
the question I want to get checked values from checkbox and return it to my activity
推荐答案
我找到了解决办法。
先制作一个静态布尔变量
first make a static Boolean variable
static Boolean checkboxstate[];
然后在构造与列表大小定义它
then define it in the constructor with the size of the list
checkboxstate=new Boolean[messageNo.length];
然后就点击你的听众复选框，并填补了布尔数组
then make your checkbox on click listener and fill the boolean array
if(checkboxstate[position]==null){
checkboxstate[position]=false;
}
cb.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(((CheckBox)v).isChecked()){
checkboxstate[position]=true;
v.setSelected(true);
}else{
checkboxstate[position]=false;
v.setSelected(false);
}
}
});
最后
public class ImageInboxAdapter extends BaseAdapter{
Context context;
String[] messageNo,messageTitle,senderId,senderName;
Bitmap[] bitmap;
Boolean selected;
static Boolean checkboxstate[];
int checkedp;
public ImageInboxAdapter(Context context, Bitmap[] bitmap,String[] messageNo,String[] messageTitle, String[] senderId,String[] senderName,Boolean selected) {
this.context=context;
this.bitmap=bitmap;
this.messageNo=messageNo;
this.messageTitle=messageTitle;
this.senderId=senderId;
this.senderName=senderName;
this.selected=selected;
checkboxstate=new Boolean[messageNo.length];
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return messageNo.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@SuppressLint("NewApi")
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if(convertView==null){
gridView=new View(context);
gridView=inflater.inflate(R.layout.list_row_message, null);
}else{
gridView = (View) convertView;
}
TextView tvTitle=(TextView)gridView.findViewById(R.id.title);
tvTitle.setText(messageTitle[position]);
TextView tvSender=(TextView)gridView.findViewById(R.id.artist);
tvSender.setText(senderName[position]);
CheckBox cb=(CheckBox)gridView.findViewById(R.id.checkBox1);
ImageView ivArraw=(ImageView)gridView.findViewById(R.id.ivArraw);
/*RelativeLayout rlImageMain=(RelativeLayout)gridView.findViewById(R.id.RlImageTitle);
rlImageMain.setBackground(new BitmapDrawable(bitmap[position]));
*/
ImageView ivMain= (ImageView)gridView.findViewById(R.id.list_image);
ivMain.setImageBitmap(bitmap[position]);
if(selected==true){
cb.setVisibility(CheckBox.VISIBLE);
ivArraw.setVisibility(ImageView.INVISIBLE);
if(checkboxstate[position]==null){
checkboxstate[position]=false;
}
cb.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(((CheckBox)v).isChecked()){
checkboxstate[position]=true;
v.setSelected(true);
}else{
checkboxstate[position]=false;
v.setSelected(false);
}
}
});
}
return gridView;
}
}
这篇关于从列表视图baseadapter得到复选框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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