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Android Camera technology (1)
The Android SDK supports operations on built-in cameras of Android devices. You can operate multiple cameras (mainly pre-cameras and post-cameras) Starting with Android2.3 ). You can take photos and videos through a camera.
Quick photo taking (
Android multimedia calls the camera and selects an image from the local albumOverview:
The function of this routine is to take photos, automatically compress images, and select images from the local album.Permission to be loaded:
Demo:
Public class MainActivity extends Activity implements View. onClickListener {private Button mButtonTakePhoto; private Button mButtonGetPhoto; private ImageView mImageViewP
Android multimedia calls the camera and selects an image from the local album,Overview:
The function of this routine is to take photos, automatically compress images, and select images from the local album.Permission to be loaded:
Demo:
Public class MainActivity extends Activity implements View. onClickListener {private Button mButtonTakePhoto; private Button mButtonGetPhoto; private ImageView mImageViewPho
Since basically all Android phones support images with a ratio of 4:3 and 16:9, sometimes the custom Surfaceview size does not meet these two proportions and will deform.Another situation is that the default previewsize and the ratio of our view will also cause deformation; the solution is from params.getsupportedpreviewsizes () Choose the appropriate proportions and then params.setpreviewsize (), at which point the size of the preview is set, and the
view the value of the photo ID longid= Mcursor.getlong (Mcursor.getcolumnindex (mediastOre. images.media._id)); NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;LOG.I ("mediastore.images.media_id=", id+ "");// filter out unwanted images, Only get pictures in albums that store photos after taking pictures stringpath=mcursor.getstring ( Mcursor.getcolumnindex (MediaStore.Images.Media.DATA));if ( Path.startswith (sdcardpath+ "/dcim/100media") | | path.startswith (sdcardpath+ "/dcim/
Android gets multiple recent photos from the album (get the photos stored by the camera)
When you are working on a company project, you need to customize the grid view of the displayed photos to display the first 20 photos that you have taken with a recent camera.
I checked the API provided by the system and did not find the path constant pointing directly to st
In the \packages\apps\camera\src\com\android\camera\settingchecker.java:Case Row_setting_jpeg_quality:int jpegquality = getjpegquality (Context, Integer.parseint (value));Parameters.setjpegquality (jpegquality);BreakModified to:Case Row_setting_jpeg_quality:int jpegquality = 100;Parameters.setjpegquality (jpegquality);BreakCan.The scope of the jpegquality is 1~10
For you beauty camera Android version of the users to detailed analysis to share the effects of tears play the function.
Play Share:
First download a good beauty camera, on the home page will see, the option of the bulk sticker.
Click on the entry to see the event, immediately joined.
The next is to import the picture, the effect
Many applications may use the ability to call the camera to take pictures, for example, the program needs to upload a picture as the user's avatar, when the camera to open a photo is the simplest and fastest. Let's take a look at an example of how you can call a camera in your app to take a picture.Create a new Choosepictest project, and then modify the code in t
When Android 2.3.7.r1 presses the menu key, the video is stopped. Press the menu key when you change the video to do not process it. The following modifications can be made:
In packages/apps/cameraopen/src/COM/mediatek/camera/videocamera. Java
In the onkeydown () method:
Modify
Case keyevent. keycode_menu:
If (mheadupdisplay! = NULL mglrootview! = NULL
! Malertshowing ! Mmediarecorderrecording
Mheadupdisp
When Android 2.3.7.r1 presses the menu key, the video is stopped. Press the menu key when you change the video to do not process it. The following modifications can be made:
In packages/apps/CameraOpen/src/com/mediatek/camera/VideoCamera. java
In the onKeyDown () method:
Modify
Copy codeThe Code is as follows: case KeyEvent. KEYCODE_MENU:
If (mHeadUpDisplay! = Null mGLRootView! = Null
! MAlertShowing ! MMe
minimum color values are the same, which means gray, then S is defined as 0, and H is undefined and is usually written in the program as 0.Step 5: Otherwise, test L:If lIf l>=0.5, s= (maxcolor-mincolor)/(2.0-maxcolor-mincolor)Step 6: If r=maxcolor, h= (g-b)/(Maxcolor-mincolor)If G=maxcolor, h=2.0+ (b-r)/(Maxcolor-mincolor)If B=maxcolor, h=4.0+ (r-g)/(Maxcolor-mincolor)Step 7: From the calculation of the 6th step, H is divided into the 0~6 area. The RGB color space is a cube and the HSL color sp
After taking a photo from an android camera, select "Edit photo". The line shape on the photo editing page will display a jagged image,Because the image displayed by decode is too small, it is smaller than the screen size. Therefore, the image will be slightly enlarged during display, resulting in a straight line shape showing a tab.You can modify the size in the getScreenImageSize method. For example, you
Because the decode out of the picture is too small, smaller than the screen. As a result, the image is magnified slightly when displayed, causing the line shape to appear jagged.Ability to change the size of the Getscreenimagesize method, for example, to make 133, larger.Detailed changes such as the following:Modify Getscreenimagesize function in Filtershowactivity.java file about lines 507.private int getscreenimagesize () {Displaymetrics metrics = new Displaymetrics ();Display display = Getwin
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