Why can getCheckedItemCount() run correctly when I set android:minSdkVersion="10"? -


when set android:minsdkversion="8", following code can't run,and system prompt me set android:minsdkversion="11" set android:minsdkversion="10", code can run correctly, why? thanks!

lv.setonitemclicklistener(new onitemclicklistener(){    @override    public void onitemclick(adapterview<?> arg0, view arg1, int arg2,long arg3) {           selectedandtotal.settext(lv.getcheckeditemcount()+"/"+ lv.getcount());                 }});

that method guaranteed work when run on api level 11+ device.

normally, method call crash on api level 10 or lower device, throwing verifyerror. if find seems work on api level 10 or lower, indicates getcheckeditemcount() existed on abslistview prior api level 11, had been excluded android sdk (via @hide attribute in android source code). relying upon such methods risky, insofar there no guarantee abslistview on pre-api level 11 devices have method, or method behave on newer devices.


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