alertdialog - How to show alert confirmation dialog from listview button in android -

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i trying show confirmation dialog after clicking on button in listview.

i have setonclicklistener in customadapter in getview method.

but on click listener getting following error:

02-25 21:36:32.065 20631-20631/com.themsg.chat w/toast: com.themsg.chat, go ahead. 02-25 21:36:32.095 20631-20631/com.themsg.chat w/system.err: android.view.windowmanager$badtokenexception: unable add window -- token null not application 02-25 21:36:32.095 20631-20631/com.themsg.chat w/system.err:     @ android.view.viewrootimpl.setview(viewrootimpl.java:569) 02-25 21:36:32.095 20631-20631/com.themsg.chat w/system.err:     @ android.view.windowmanagerglobal.addview(windowmanagerglobal.java:266) 02-25 21:36:32.095 20631-20631/com.themsg.chat w/system.err:     @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:69) 02-25 21:36:32.095 20631-20631/com.themsg.chat w/system.err:     @ android.app.dialog.show(dialog.java:286)

here code:

holder.tvm.setonclicklistener(new view.onclicklistener() {              @override             public void onclick(view v) {                 try {                     chatroommembers = getitem(position);                      toast.maketext(getcontext(), "here", toast.length_long).show();                     new alertdialog.builder(v.getcontext())                         .settitle("title")                         .setmessage("do want whatever?")                         .seticon(android.r.drawable.ic_dialog_alert)                         .setpositivebutton(android.r.string.yes, new dialoginterface.onclicklistener() {                              public void onclick(dialoginterface dialog, int whichbutton) {                                 deleteuserfromchatrrom(chatroommembers.getid(), sessiondata.getinstance().getcurrentchatroom(), position);                             }})                         .setnegativebutton(android.r.string.no, null).show();                  } catch (exception e) {                     e.printstacktrace();                 }             }         });

in class customadapter declare variable mcontext , arraylist data listview

    arraylist<string> datasource;     context mcontext;

create constructor:

    public adapteraudio(context mcontext, arraylist<string> data) {     super();     this.datasoure = data;     this.mcontext = mcontext; }

when call customadapter activity, "activity_main.this" context need

   customadapter adapter = new customadapter(activity_main.this, listaudio_hienthi10);

now have context, use variable mcontext declared replace

    "getcontext()", "v.getcontext()"

now can toast or show dialog when click button in customadapter want. enjoy code!


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