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caveats:1, Textureview is the Android 4.0 after the addition of the lower version of this class. Textureview must work in an environment where hardware acceleration is enabled, in the settings of the activity in the configuration file: Android:hardwareaccelerated= "True" is the default property, so no more writing is required. But if you write false, you can see Onsurfacetextureavailable () This callback will not come in, Textureview no surfacetextur
To prevent videotaping, the industry has unwritten rules, mobile phone companies in doing camera, click on the camera and video button, must have a beep. As a result, Google is also very user-friendly to play the function of the sound of the camera, placed in the cameraservice, to prevent developers can not develop the camera
There are unwritten rules in the industry that phone companies must have a prompt when they click the photo and video keys for camera. Therefore, google also put the function of playing the photo sound in the cameraService to prevent developers from developing a non-audible camera. Therefore, as long as the camera function is called, it will surely sound, this is
There are unwritten rules in the industry that phone companies must have a prompt when they click the photo and video keys for camera. Therefore, google also put the function of playing the photo sound in the cameraService to prevent developers from developing a non-audible camera. Therefore, as long as the camera function is called, it will surely sound, this is
for the beginning of row y for the Y plane and row c for the U and V planes: yStride = (int) ceil (width/16.0) * 16; uvStride = (int) ceil (yStride/2)/16.0) * 16; ySize = yStride * height; uvSize = uvStride * height/2; yRowIndex = yStride * y; uRowIndex = ySize + uvSize + uvStride * c; vRowIndex = ySize + uvStride * c; size = ySize + uvSize * 2; www. 2ct O.com strongly recommends NV21 and YV21 formats, which are NV21 by default, that is, YUV420SP. Therefore, BitmapFactory resolution cannot be s
1.In the oncreate method:
1.1Call the getpreferredcameraid () method. In this method, the combopreferences object is added, which is used to manageProgramThe configuration file generated in the package name. After obtaining this object, some configurations are initialized. Then read the camera ID mcameraid from the configuration file and call util. the getcamerafacingintentextras (this) method is obtained through "
In jb2, take a photo/video in camera, and click the thumbnail in the lower right corner/slide to the left to view the image/video, after you click "delete" menu to delete all images/videos, the camera preview is displayed only at about 1/4 on the left of the screen. After sliding to the right, the camera preview interface is displayed. How to automatically return
In the past two days, after programming the android camera module and setting various parameters, we found that during previewing, the photos were reversed, rather than up or down, but 90 °. My mobile phone is Huawei u9200 and I used android4.0.3. Later I saw fuse (90), and then the preview was normal. However, the photos are still skewed when they are opened on the computer. Tilted 90 °, and then added thi
Android framework camera review-Relationship between Camera CameraClient ICamera (1)-cl and c-) Where does mCamera go?
Status_t Camera: connectLegacy (int cameraId, int halVersion, const String16 clientPackageName, {sp
C = new Camera (cameraId); s
Int clientUid, sp
A
To take a photo with the camera step:Call the camera's open () method to turn on the cameras. This method opens the rear-facing camera by default. If you need to turn on the specified camera, you can pass in the camera ID for that method.Call the camera's GetParameters () method to get the
Check the system camera source, find the manifest file viewView Intent filter,action is Android.media.action.IMAGE_CAPTURECategory is Android.intent.category.DEFAULTGet Intent object, come out with newCall the setaction () method of the Intent Object , set the action, parameter:android.media.action.IMAGE_ CAPTURE Call intent setcategory () Call the PutExtra () method of the Intent object , pass the data, parameters:mediastore.extraoutput, value
[Android developer]
Section 1 Overview of camera
Android's camera includes the viewfinder and photo taking functions. Currently, the camera program of the android release version has simple functions, but its program architecture is divided into two parts: client and server.
Camera Control for Android Development
Currently, mobile phones generally provide camera functions. Some cameras even support more than 13 million pixels, and some even support independent focus and optical zoom. These functions are available only for slrs, even some mobile phones can be directly advertised to capture stars. It can be said that mobile phones have
status_t camera::connectlegacy (int cameraid, int halversion, const string16 Clientpackagename, int Clientuid, spAnalyze where CL and C->mcamera pass to.Android Framework Camera Review-camera cameraclient Icamera Relationship (1) where-cl and C->mcamera go
[Video] development secrets of Embedded Linux/Android drivers (3) camera driver development and android driver development
Secrets of Embedded Linux/Android driver development (3) camera driver development
Topic introduction:This topic provides an in-depth analysis of the
[Android] 20.3 camera and video recording, androidprop 3
Category: C #, Android, VS2015;
Date created: 1. Introduction
The Camera provided by Android has two typical versions: one is provided before Android 5.0, called
In Android, user portraits and android user portraits are set by accessing a local album or camera.
Currently, almost all apps have the need to set up portraits when users register. There are three scenarios:
(1) obtain the image of the local album and crop it as the Avatar.
(2) Start the mobile phone camera, take the
Create a preview classTo allow users to effectively obtain images and videos, they must be able to see images in the camera. A camera preview class is a SurfaceView class that can display Real-Time Images in the camera, so users can frame and capture images or videos.
The Code in the following example demonstrates how to create a basic
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