Select the Listview check box

Source: Internet
Author: User

Problem description:

I created a custom listview with Image, Text, and checkbox. Check whether or not to select the check box. I used onItemClick () but it was not called. Are I correct?

[Java]
Class PInfo {
String appname = "";
String pname = "";
Drawable icon;
}
Public class InstalledApps extends Activity {
Private static LayoutInflater inflater = null;
Private ListView listview;
Private Activity;
List <PInfo> installedApps = new ArrayList <PInfo> ();
@ Override
Protected void onCreate (Bundle savedInstanceState ){
// TODO Auto-generated method stub
Super. onCreate (savedInstanceState );
SetContentView (R. layout. applist );
Activity = this;
Listview = (ListView) findViewById (R. id. listView1 );
PackageManager pm = getPackageManager ();
List <ApplicationInfo> packages = pm. getInstalledApplications (PackageManager. GET_META_DATA );
For (ApplicationInfo app: packages ){
PInfo newInfo = new PInfo ();
NewInfo. appname = (String) app. loadLabel (pm );
NewInfo. pname = app. packageName;
// NewInfo. icon = app. icon;
// Drawable dd = activity. getResources (). getDrawable (app. icon );
NewInfo. icon = app. loadIcon (getPackageManager ());
If (app. flags & ApplicationInfo. FLAG_UPDATED_SYSTEM_APP) = 1 ){
InstalledApps. add (newInfo );
} Else if (app. flags & ApplicationInfo. FLAG_SYSTEM) = 1 ){
InstalledApps. add (newInfo );
} Else {
InstalledApps. add (newInfo );
}
}
Installedtransferadapter iap = new installedtransferadapter (this, installedApps );
Listview. setAdapter (iap );
}
}
Class installed+adapter extends BaseAdapter {
Private Activity;
Private static LayoutInflater inflater = null;
List <PInfo> installedApps = new ArrayList <PInfo> ();
ListView listview;
Public installed+adapter (Activity a, List <PInfo> B ){
// TODO Auto-generated constructor stub
InstalledApps = B;
Activity =;
Inflater = (LayoutInflater) activity. getSystemService (Context. LAYOUT_INFLATER_SERVICE );
Listview = (ListView) activity. findViewById (R. id. listView1 );
// Here is where I have put it currently ..
Listview. setOnItemClickListener (new OnItemClickListener (){
 
@ Override
Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
Long arg3 ){
// TODO Auto-generated method stub
PInfo newInfo = (PInfo) listview. getItemAtPosition (arg2 );
System. out. println (newInfo. appname );
}
});
}
@ Override
Public int getCount (){
// TODO Auto-generated method stub
Return installedApps. size ();
}
@ Override
Public Object getItem (int arg0 ){
// TODO Auto-generated method stub
Return arg0;
}
@ Override
Public long getItemId (int arg0 ){
// TODO Auto-generated method stub
Return arg0;
}
@ Override
Public View getView (int arg0, View arg1, ViewGroup arg2 ){
// TODO Auto-generated method stub
View customView = inflater. inflate (R. layout. listrow, arg2, false );
ImageView iv = (ImageView) customView. findViewById (R. id. imageView1 );
TextView TV = (TextView) customView. findViewById (R. id. textView2 );
CheckBox cb = (CheckBox) customView. findViewById (R. id. checkBox1 );
PInfo pinfo = installedApps. get (arg0 );
TV. setText ("" + pinfo. appname );
Iv. setImageDrawable (pinfo. icon );
Return customView;
}
}

Class PInfo {
String appname = "";
String pname = "";
Drawable icon;
}
Public class InstalledApps extends Activity {
Private static LayoutInflater inflater = null;
Private ListView listview;
Private Activity;
List <PInfo> installedApps = new ArrayList <PInfo> ();
@ Override
Protected void onCreate (Bundle savedInstanceState ){
// TODO Auto-generated method stub
Super. onCreate (savedInstanceState );
SetContentView (R. layout. applist );
Activity = this;
Listview = (ListView) findViewById (R. id. listView1 );
PackageManager pm = getPackageManager ();
List <ApplicationInfo> packages = pm. getInstalledApplications (PackageManager. GET_META_DATA );
For (ApplicationInfo app: packages ){
PInfo newInfo = new PInfo ();
NewInfo. appname = (String) app. loadLabel (pm );
NewInfo. pname = app. packageName;
// NewInfo. icon = app. icon;
// Drawable dd = activity. getResources (). getDrawable (app. icon );
NewInfo. icon = app. loadIcon (getPackageManager ());
If (app. flags & ApplicationInfo. FLAG_UPDATED_SYSTEM_APP) = 1 ){
InstalledApps. add (newInfo );
} Else if (app. flags & ApplicationInfo. FLAG_SYSTEM) = 1 ){
InstalledApps. add (newInfo );
} Else {
InstalledApps. add (newInfo );
}
}
Installedtransferadapter iap = new installedtransferadapter (this, installedApps );
Listview. setAdapter (iap );
}
}
Class installed+adapter extends BaseAdapter {
Private Activity;
Private static LayoutInflater inflater = null;
List <PInfo> installedApps = new ArrayList <PInfo> ();
ListView listview;
Public installed+adapter (Activity a, List <PInfo> B ){
// TODO Auto-generated constructor stub
InstalledApps = B;
Activity =;
Inflater = (LayoutInflater) activity. getSystemService (Context. LAYOUT_INFLATER_SERVICE );
Listview = (ListView) activity. findViewById (R. id. listView1 );
// Here is where I have put it currently ..
Listview. setOnItemClickListener (new OnItemClickListener (){

@ Override
Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
Long arg3 ){
// TODO Auto-generated method stub
PInfo newInfo = (PInfo) listview. getItemAtPosition (arg2 );
System. out. println (newInfo. appname );
}
});
}
@ Override
Public int getCount (){
// TODO Auto-generated method stub
Return installedApps. size ();
}
@ Override
Public Object getItem (int arg0 ){
// TODO Auto-generated method stub
Return arg0;
}
@ Override
Public long getItemId (int arg0 ){
// TODO Auto-generated method stub
Return arg0;
}
@ Override
Public View getView (int arg0, View arg1, ViewGroup arg2 ){
// TODO Auto-generated method stub
View customView = inflater. inflate (R. layout. listrow, arg2, false );
ImageView iv = (ImageView) customView. findViewById (R. id. imageView1 );
TextView TV = (TextView) customView. findViewById (R. id. textView2 );
CheckBox cb = (CheckBox) customView. findViewById (R. id. checkBox1 );
PInfo pinfo = installedApps. get (arg0 );
TV. setText ("" + pinfo. appname );
Iv. setImageDrawable (pinfo. icon );
Return customView;
}
} Where can I add the following code (if this is the correct listner)

[Java]
Listview. setOnItemClickListener (new OnItemClickListener (){
 
@ Override
Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
Long arg3 ){
// TODO Auto-generated method stub
PInfo newInfo = (PInfo) listview. getItemAtPosition (arg2 );
System. out. println (newInfo. appname );
}
});

Listview. setOnItemClickListener (new OnItemClickListener (){

@ Override
Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
Long arg3 ){
// TODO Auto-generated method stub
PInfo newInfo = (PInfo) listview. getItemAtPosition (arg2 );
System. out. println (newInfo. appname );
}
});
Solution:

Add the following code to getView:

[Java]
@ Override
Public View getView (int arg0, View arg1, ViewGroup arg2 ){
// TODO Auto-generated method stub
View customView = inflater. inflate (R. layout. listrow, arg2, false );
ImageView iv = (ImageView) customView. findViewById (R. id. imageView1 );
TextView TV = (TextView) customView. findViewById (R. id. textView2 );
CheckBox cb = (CheckBox) customView. findViewById (R. id. checkBox1 );
 
Cb. setOnCheckedChangeListener (new OnCheckedChangeListener ()
{
Public void onCheckedChanged (CompoundButton buttonView, boolean isChecked)
{
If (isChecked)
{
// Perform logic
}
}
});
}
PInfo pinfo = installedApps. get (arg0 );
 
TV. setText ("" + pinfo. appname );
Iv. setImageDrawable (pinfo. icon );
Return customView;
}

@ Override
Public View getView (int arg0, View arg1, ViewGroup arg2 ){
// TODO Auto-generated method stub
View customView = inflater. inflate (R. layout. listrow, arg2, false );
ImageView iv = (ImageView) customView. findViewById (R. id. imageView1 );
TextView TV = (TextView) customView. findViewById (R. id. textView2 );
CheckBox cb = (CheckBox) customView. findViewById (R. id. checkBox1 );

Cb. setOnCheckedChangeListener (new OnCheckedChangeListener ()
{
Public void onCheckedChanged (CompoundButton buttonView, boolean isChecked)
{
If (isChecked)
{
// Perform logic
}
}
});
}
PInfo pinfo = installedApps. get (arg0 );

TV. setText ("" + pinfo. appname );
Iv. setImageDrawable (pinfo. icon );
Return customView;
}


 

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.