java - How to check if android.hardware.Camera is released? -


i got exception while releasing camera object "java.lang.runtimeexception: method called after release"

following code , exception stack trace. 

if (camera != null) {      camera.stoppreview();                     camera.release();      camera = null; }

exception stack trace - 

java.lang.runtimeexception: method called after release() thread[main,5,main] android.hardware.camera._stoppreview(native method) android.hardware.camera.stoppreview(camera.java:626) com.s5.selfiemonkey1.activity.preview.surfacedestroyed(preview.java:152) android.view.surfaceview.updatewindow(surfaceview.java:601) android.view.surfaceview.access$000(surfaceview.java:88) android.view.surfaceview$3.onpredraw(surfaceview.java:183) android.view.viewtreeobserver.dispatchonpredraw(viewtreeobserver.java:680) android.view.viewrootimpl.performtraversals(viewrootimpl.java:2123) android.view.viewrootimpl.dotraversal(viewrootimpl.java:1139) android.view.viewrootimpl$traversalrunnable.run(viewrootimpl.java:4872) android.view.choreographer$callbackrecord.run(choreographer.java:776) android.view.choreographer.docallbacks(choreographer.java:579) android.view.choreographer.doframe(choreographer.java:548) android.view.choreographer$framedisplayeventreceiver.run(choreographer.java:762) android.os.handler.handlecallback(handler.java:800) android.os.handler.dispatchmessage(handler.java:100) android.os.looper.loop(looper.java:194) android.app.activitythread.main(activitythread.java:5371) java.lang.reflect.method.invokenative(native method) java.lang.reflect.method.invoke(method.java:525) com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:833) com.android.internal.os.zygoteinit.main(zygoteinit.java:600)

it stoppreview() called on released object.

i had made method return me boolean depending of whether camera in use or not. below small snipet:

    public static camera checkforcamera(){     camera camera = null;     try {         camera = camera.open(); // line throw exception if camera not in use.     }     catch (exception e){         // if exception thrown, return boolean value here...     }     return camera; // if instance of camera, if not available return null. }

-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being ...
Read more

how to prompt save As Box in Excel Interlop c# MVC 4 -

i want export excel sheet using excel interloop... i have datatable convert excel sheet... now there way save file using save dialogue box in mvc 4 here code public string datatabletoexcel(datatable dt, string htmlheading, string key) { try { microsoft.office.interop.excel.application excel; microsoft.office.interop.excel.workbook excelworkbook; microsoft.office.interop.excel.worksheet excelsheet; microsoft.office.interop.excel.range excelcellrange; excel = new microsoft.office.interop.excel.application(); excel.visible = false; excel.displayalerts = false; excelworkbook = excel.workbooks.add(type.missing); excelsheet = (microsoft.office.interop.excel.worksheet)excelworkbook.activesheet; excelsheet.name = "sheet1"; dataset ...
Read more

xslt 1.0 - How to access or retrieve mets content of an item from another item? -

my use case have item has link in item. example, item 123456789/152 has metadata field dc.relation.hasversion=123456789/717 . within item view of 123456789/152 , how can retrieve values of metadata of 123456789/717 ? example, want retrieve dc.language.iso value of 123456789/717 123456789/152 . i looked @ related items feature in dspace don't know how metadata displayed in related items list pulled items in list. i using dspace version 5.3 mirage 2 theme . edit based on schweerelos answer, below actual code. using custom metadata field dc.relation.languageversion . basically, want link other version instead of displaying value, display dc.language.iso of other version in item-view.xsl . i've incorporated answer of schweerelos question in code just displaying value of dc.relation.languageversion . sample values of dc.relation.languageversion 10665.1/9843 ; 10665.1/9844 ie not complete uri handle. thanks in advance! actual code <xsl:template name=...
Read more