Please help me with putting checkbox in listview to select multiple apps from listview and do further actions on them using buttons.
Adapter class.
public class AppsAdapter extends ArrayAdapter<ApplicationInfo>{
private List<ApplicationInfo> applist=null;
private Context context;
private PackageManager packageManager;
public AppsAdapter(Context context, int resource,
List<ApplicationInfo> objects){
super(context,resource,objects);
this.context=context;
this.applist=objects;
packageManager=context.getPackageManager();
}
@Override
public int getCount(){
return ((null != applist)?applist.size():0);
}
@Override
public ApplicationInfo getItem(int position){
return ((null != applist)?applist.get(position):null);
}
@Override
public long getItemId(int position){
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view=convertView;
if(null==view){
LayoutInflater layoutInflater= (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view=layoutInflater.inflate(R.layout.item_list,null);
}
ApplicationInfo data=applist.get(position);
if(null!=data){
TextView appName=(TextView)view.findViewById(R.id.app_name);
TextView packageName=(TextView)view.findViewById(R.id.package_name);
ImageView iconView=(ImageView)view.findViewById(R.id.image_icon);
// CheckedTextView checkedTextView= (CheckedTextView)view.findViewById(R.id.checkedTextView1);
appName.setText(data.loadLabel(packageManager));
packageName.setText(data.packageName);
iconView.setImageDrawable(data.loadIcon(packageManager));
}
return view;
}
}
MainActivity class.
Where should i exactly define listview and checkedtextview in mainactivity.
public class MainActivity extends ListActivity {
private PackageManager packageManager = null;
private List<ApplicationInfo> applist = null;
private AppsAdapter listadapter = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
packageManager = getPackageManager();
new LoadApplications().execute();
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
ApplicationInfo app = applist.get(position);
try{
Intent intent = packageManager.getLaunchIntentForPackage(app.packageName);
if(intent != null) {
startActivity(intent);
}
} catch(ActivityNotFoundException e) {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_LONG).show();
} catch(Exception e) {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_LONG).show();
}
}
private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
ArrayList<ApplicationInfo> appList = new ArrayList<ApplicationInfo>();
for(ApplicationInfo info : list) {
try{
if(packageManager.getLaunchIntentForPackage(info.packageName) != null) {
appList.add(info);
}
} catch(Exception e) {
e.printStackTrace();
}
}
return appList;
}
private class LoadApplications extends AsyncTask<Void, Void, Void> {
private ProgressDialog progress = null;
@Override
protected Void doInBackground(Void... params) {
applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
listadapter = new AppsAdapter(MainActivity.this, R.layout.item_list, applist);
return null;
}
}
}
item_list.xml file.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:id="@+id/image_icon"
android:scaleType="centerCrop"
android:padding="3dp"
/>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:gravity="center|center_vertical"
android:paddingLeft="5dp"
>
<TextView
android:id="@+id/app_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:textStyle="bold" />
<TextView
android:id="@+id/package_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical" />
</LinearLayout>
</LinearLayout>
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