i calling following "action method" on button click me wrong when click on button flash doesn't work.
private void actionflash(){ /* first check if device supporting flashlight or not */ hasflash = this.getapplicationcontext().getpackagemanager().hassystemfeature(packagemanager.feature_camera_flash); if(!hasflash){ // device doesn't support flash // show alert message , close application alertdialog alert = new alertdialog.builder(this).create(); alert.setmessage("sorry, device doesn't support flash light!"); alert.setbutton(dialoginterface.button_positive, "ok", new dialoginterface.onclicklistener(){ public void onclick(dialoginterface dialog, int which){ dialog.dismiss(); } }); alert.show(); return; } else{ cameramanager mcameramanager = (cameramanager) this.getsystemservice(context.camera_service); try{ string mcameraid = mcameramanager.getcameraidlist()[0]; if(mcameraid.equals("1")) { // on camera if(!isflashon){ // if flash light off // turn on flash light try{ if(build.version.sdk_int >= build.version_codes.m){ mcameramanager.settorchmode(mcameraid, true); } }catch(exception e){ e.printstacktrace(); } // change isflashon boolean value isflashon = true; // change button icon flash.setimageresource(r.drawable.ic_flash_off_black_24dp); }else{ // if flash light on // turn off flash light try{ if(build.version.sdk_int >= build.version_codes.m){ mcameramanager.settorchmode(mcameraid, false); } }catch(exception e){ e.printstacktrace(); } // change isflashon boolean value isflashon = false; // change button icon flash.setimageresource(r.drawable.ic_flash_on_black_24dp); } } }catch(cameraaccessexception e){ toast.maketext(this, "cannot access camera.", toast.length_short).show(); this.finish(); } } } i using following setup camera code flash button doesn't responds:
private void setupcamera(int width, int height) { cameramanager cameramanager = (cameramanager) getsystemservice(context.camera_service); try { for(string cameraid : cameramanager.getcameraidlist()){ cameracharacteristics cameracharacteristics = cameramanager.getcameracharacteristics(cameraid); if(cameracharacteristics.get(cameracharacteristics.lens_facing) == cameracharacteristics.lens_facing_front) { continue; } streamconfigurationmap map = cameracharacteristics.get(cameracharacteristics.scaler_stream_configuration_map); int deviceorientation = getwindowmanager().getdefaultdisplay().getrotation(); mtotalrotation = sensortodevicerotation(cameracharacteristics, deviceorientation); boolean swaprotation = mtotalrotation == 90 || mtotalrotation == 270; int rotatedwidth = width; int rotatedheight = height; if(swaprotation) { rotatedwidth = height; rotatedheight = width; } mpreviewsize = chooseoptimalsize(map.getoutputsizes(surfacetexture.class), rotatedwidth, rotatedheight); mvideosize = chooseoptimalsize(map.getoutputsizes(mediarecorder.class), rotatedwidth, rotatedheight); mimagesize = chooseoptimalsize(map.getoutputsizes(imageformat.jpeg), rotatedwidth, rotatedheight); mimagereader = imagereader.newinstance(mimagesize.getwidth(), mimagesize.getheight(), imageformat.jpeg, 1); mimagereader.setonimageavailablelistener(monimageavailablelistener, mbackgroundhandler); mcameraid = cameraid; return; } } catch (cameraaccessexception e) { e.printstacktrace(); } }
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