Android - Take picture without preview -


i trying take picture without preview, when application starts running , after save picture in new folder - "pictures123", in root folder. please tell me what's wrong in code?

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     file directory = new file(environment.getexternalstoragedirectory() + "/pictures123/");      if (!directory.exists()) {         directory.mkdir();     }      camera camera = camera.open(0);     camera.parameters parameters = camera.getparameters();     parameters.setpictureformat(imageformat.jpeg);     camera.setparameters(parameters);     surfaceview mview = new surfaceview(getbasecontext());     camera.setpreviewdisplay(mview.getholder());     camera.setpreviewdisplay(null);     camera.startpreview();     camera.takepicture(null,null,photocallback);     camera.stoppreview(); }  camera.picturecallback photocallback=new camera.picturecallback() {     public void onpicturetaken(byte[] data, camera camera) {          try {             string root = environment.getexternalstoragedirectory().tostring();             file mydir = new file(root + "/pictures123");             file file = new file (mydir, "pic1.jpeg");             fileoutputstream out = new fileoutputstream(file);             out.write(data);             out.flush();             out.close();         } catch (filenotfoundexception e) {             e.printstacktrace();          } catch (ioexception e) {             e.printstacktrace();          } catch (exception e)         {             e.printstacktrace();         }         finish();      } };

permissions:

<uses-permission android:name="android.permission.write_external_storage"/> <uses-permission android:name="android.permission.read_external_storage"/> <uses-permission android:name="android.permission.camera" /> <uses-feature android:name="android.hardware.camera" />

you can't take picture without preview, don't have show preview on screen. can direct output surfacetexture instead (api 11+).

see this answer more details.


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