ios - AVAudioSession Interruption notification fires only once -

-

in ios app i'm registering avaudiosession interruption notifications 

[[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(handleaudiosessioninterruption:) name:avaudiosessioninterruptionnotification object:nil];  [[avaudiosession sharedinstance] setcategory:avaudiosessioncategoryplayandrecord withoptions:avaudiosessioncategoryoptionallowbluetooth error:nil];  [[avaudiosession sharedinstance] setactive:yes error:nil];

when test app playing random music youtube, handleaudiosessioninterruption method fires first time (interruptionbegan). when quit youtube app, method gets fired again (interruptionended). repeat same steps before , method not fired @ , need restart app make work again. can tell wrong or point sample implementation.

note : neither see errors nor app crashes.

it's possible observer getting removed nsnotificationcenter. make sure that not happening. calling removeobserver:self without specifying notification name remove self nsnotificationcenter notifications.

also try making appdelegate observer of avaudiosessioninterruptionnotification in addition observer registering. if appdelegate's handler keeps getting called after other handler stops getting called give more information.


Comments

Post a Comment

Popular posts from this blog

c - Calling a function within a loop -

-
i trying simple addition function take number x array , add variable i it, iteration variable inside loop. instead of adding each variable individually , producing output of : 3, 2, 7 it produces values of 3, 5, 13. #include <stdio.h> int add(int x[], int y); int main(void) { int i; int a[3] = {3, 1, 5}; for(i=0; i<3; i++) { printf("%d \t", i); printf("%d, %d, equals %d \n", a[i], i, add(a[i], i)); } return 0; } int add(int x[], int y){ return x+y; } try int add(int x, int y){ return x+y; }
Read more

vb.net - Unbound DataGridView add row with checkbox error -

-
this windows forms program. have unbound datagridview control 4 columns; feature id string, parts string, flats string , showonest boolean. columns defined in form designer , boolean column is, indeed, set checkbox tristate set false. the user selects product list box , code executed populate grid grdfeat.rows.clear() = 0 curproduct.lstfeatures.count - 1 (curproduct.lstfeatures(i)) grdfeat.rows.add(.featureid, .parts, .flats, .showonest) end next if allowusertoaddrows false, everthing good. setting allowusertoaddrows true, however, results in following error: formatexception value '' cannot converted type 'boolean'. the error not triggered in code. it's displayed in new tab titled "no source available". it seems pretty clear process adds new editing row trying set checkbox string value, or perhaps null. i'm new (a few months) vb.net, suspect i'm overlooking simple setting somewhere, after several hours of trying...
Read more

How i fill combobox items in Radgridview manually using in vb.net -

-
how fill combobox items in radgridview manually without using datasource in vb.net have radgridview in form.(radgridview1) radgridview1 contained 3 column , column number 3 combobox type. want fill each combobox in column 3 data using code: unp ipe angle box other profile. don't know how it. you can use gridtemplatecolumn following. <telerik:gridtemplatecolumn itemstyle-wrap="true" itemstyle-verticalalign="middle" itemstyle-horizontalalign="center" allowfiltering="false" headerstyle-horizontalalign="center" headerstyle-width="3%" itemstyle-width="3%" headertext="profile"> <itemtemplate> <telerik:radcombobox> <items> <telerik:radcomboboxitem text="unp" value="unp" /> ...
Read more