how to make android camera better

Preface This chapter is about Framework Topics/Multimedia and Camera/Jet Player in the Android developer guide. The version is Android 4.0 r1. Translated from: "Dummies". Welcome to his Weibo Website: "http://weibo.com/popapa", thanks again "dumb prawns "! We look forward to your participation in translation of Android

the camera intent. putExtra ("output", Uri. fromFile (tempFile); startActivityForResult (intent, OPEN_CAMERA_CODE);}/*** open album */public void openGallery () {Intent intent = ne W Intent (Intent. ACTION_PICK); // open the album intent. setDataAndType (MediaStore. images. media. INTERNAL_CONTENT_URI, "image/*"); intent. putExtra ("output", Uri. fromFile (tempFile); startActivityForResult (intent, OPEN_GALLERY_CODE);}/*** crop image ** @ param uri *

Since the Android camera preview data can only be IMAGEFORMAT.NV21 format, so the decoding to go through a turn.Camera Mcamera == mcamera.getparameters ();p. Setpreviewformat (IMAGEFORMAT.NV21); /* This is a unique value or can not be set. Some students may be set to PixelFormat below a value, in fact, is not right, the specific can see the official document */mcamera.setparameters (P); Mcamera.startpreview

Recently called the camera in the project, the use of someone else to write the file, but found that the captured photos did not really use the system photography and then view so clear, so the study, found that the usual call camera function to obtain the image is compressed, if you want to get the original picture, it has to be saved after the acquisition. Find a blogger on the internet wrote two articles

// System album request code Private Static int - ; // System Camera Request code Private Static int 101;Photo Photo Save AddressPrivate final static String Header_path = Environment.getexternalstoragedirectory () + File.separator + "header.jpg";// Enter System album New Intent (intent.action_get_content); Intent.settype ("image/*"); Startactivityforresult (Intent, request

;}/*** Initialize files that store pictures** @return Initialization successfully returns TRUE, otherwise false*/Private Boolean initimagefile () {Initializing files when there is an SD cardif (Hassdcard ()) {Constructs the path to the file where the picture is stored, the file name is the current timeString FilePath = Environment.getexternalstoragedirectory (). GetAbsolutePath ()+ "/"+ System.currenttimemillis ()+ ". png";ImageFile = new File (FilePath);if (!imagefile.exists ()) {//If the file

Simple to do a camera and picture editing module, time reason very versatile has not been done. There are still bugs, forgive, will be in the future to change the timeCode addressPS: Please order a star^-^--------------------------------------------------------------------------------------------------------------- --Brief introduction:1. Now includes 19 filters in Instagram, such as Amaro,branan,earlybird,freud,hefe,lomo,inkwell, etc.and other apps s

System: LC android4.4 In the camera before and after the video, found that there will be a flower screen, but not necessarily, may occur after a reboot will appear, and will be in the necessary state, unless again restart. Baidu has a lot of solutions, what by setting camera.unlock, and so on, are unable to solve, after the continuous attempt, the solution is as follows: To set the preview resolution: Camera.parameters Parameters = Camera.getp

(Environment.getexternalstoragedirectory (), Image_file_name) ; Croprawphoto (Uri.fromfile (tempfile)); else {Toast.maketext (getapplication (), "No sdcard!", Toast.length_long). Show (); Case Code_result_request:if (Intent!= null) {Setimagetoheadview (intent);//Set Picture box} break; } super.onactivityresult (Requestcode, ResultCode, intent); /** * Crop the original picture */public void Croprawphoto (Uri uri) {Intent Intent = new Intent ("Com.android.camera.action.CROP"); Inten T.setdataandt

In the development of Android often use the image upload function, commonly used is to call the Android system comes with the library and photo function. The sample code is as follows:Java code:public class Testactivity extends Activity {public final static int photo_zoom = 0; Public final static int take_photo = 1; Public final static int photo_result = 2; public static final String image_unspecif

directly saved in the System album location??????????????????? File File = new file ("/sdcard/myimage/"); File.mkdirs (); //Create a folder String fileName = "/sdcard/myimage/" +name; try { b = new FileOutputStream (FileName); Bitmap.compress (Bitmap.CompressFormat.JPEG, N, b); Writing data to a file } catch (FileNotFoundException e) { E.printstacktrace (); } finally { try { B.flush (); B.close (); } catch (IOException e) { E.printstacktrace (); } } ((

(context,null); } Public Cameragrid (context context, AttributeSet Attrs) { Super (context, attrs); Init (); } private void Init () { mpaint = new Paint (); Mpaint.setcolor (color.white); Mpaint.setalpha (+); Mpaint.setstrokewidth (1f); } Private Boolean showgrid = true; public Boolean Isshowgrid () { return showgrid; } public void Setshowgrid (Boolean showgrid) { This.showgrid = showgrid; } public i

Android 7.0 Call camera crash solution Error Tip: Android.os.fileuriexposedexception:file:///storage/emulated/0/dcim/img_1041503431.jpg exposed beyond app through ClipData.Item.getUri () Treatment mode /** * Open camera */private void showcameraaction () {if (Contextcompat.checkselfpermission getcontext (), manifest.pe Rmission. write_externa

directly saved in the System album location???????????????????File File = new file ("/sdcard/myimage/");File.mkdirs ();//Create FolderString fileName = "/sdcard/myimage/" +name;try {b = new FileOutputStream (fileName);Bitmap.compress (Bitmap.CompressFormat.JPEG, +, b);//write data to file} catch (FileNotFoundException e) {E.printstacktrace ();} finally {try {B.flush ();B.close ();} catch (IOException e) {E.printstacktrace ();}}ImageView iv= (ImageView) Findviewbyid (r.id.news_imageview_image);I

finally gets a darker image. This pattern is symmetric, which means that the exchange base and the blend color get the same result.F (b) = AB, where a is the base color and B is a blend color.Filter--First, the pixel values of the two-layer images are complementary, then multiply them, and finally the complementary number. This is the opposite of the result from the multiply. It will get a brighter image.F (b) =1-(1-a) (1-b), where a is the base color and B is a blend color.Overlay-combines mul

As a reference for the realization of image recognition in the Java layer. It is best to find a hole in the JNI layer to extract the data. --leon Http://blog.csdn.net/chenji001/archive/2010/08/25/5836685.aspx In Android, if you want to process preivew data (such as face tracking), the callback function directly on the Java layer can cause frequent memory requests and copy, even with the latest Setpreviewcallbackwithbuffer functions, Memory co