Android GigaTech

ExifInterface is a class for reading and writing Exif tags in a JPEG file or a RAW image file. Supported formats are: JPEG, DNG, CR2, NEF, NRW, ARW, RW2, ORF, PEF, SRW and RAF. Attribute mutation is supported for JPEG image files. In clear way we can say: Exif is a specification for supporting metadata in a file, mostly used for JPEG, TIFF, and other image formats. The TAG_-prefixed constants on ExifInterface identify common tags, though not every image will have every tag. Tags that are popular among developers include TAG_ORIENTATION (indicating the orientation of the camera when the image was captured) and the TAG_GPS_-prefixed family (for geotagging). With the release of the 25.1.0 Support Library, there's a new entry in the family: the ExifInterface Support Library. With significant improvements introduced in Android 7.1 to the framework's ExifInterface , it only made sense to make those available to all API 9+ devices via the Support Library's ExifInterf...

Android O introduces some improvements to help provide user control over the use of identifiers. These improvements include: limiting the use of device-scoped identifiers that are not resettable updating the Android O Wi-Fi stack in conjunction with changes to the Wi-Fi chipset firmware used by Pixel, Pixel XL and Nexus 5x phones to randomize MAC addresses in probe requests updating the way that applications request account information and providing more user-facing control Device identifier changes Here are some of the device identifier changes for Android O: Android ID In O, Android ID (Settings.Secure.ANDROID_ID or SSAID) has a different value for each app and each user on the device. Developers requiring a device-scoped identifier, should instead use a resettable identifier, such as Advertising ID , giving users more control. Advertising ID also provides a user-facing setting to limit ad tracking . Additionally in Android O: The ANDROID_ID value won...

Currently google has release the Flexbox which can be used for building flexible layouts using FlexboxLayout, it can be interpreted as an advanced LinearLayout because both layouts align their child views sequentially. For more detail on this flexbox-layout But here we are gonna work on Flexbox with RecyclerView. Flexbox with a large number of items in a scrollable container! Let's first see what are the Supported attributes / features comparison Due to some characteristics of the RecyclerView, some Flexbox attributes are not available/not implemented to the FlexboxLayoutManager. Here is a quick overview of the attributes/features comparison between the two containers. Attribute / Feature FlexboxLayout                FlexboxLayoutManager (RecyclerView) flexDirection flexWrap (except wrap_reverse ) justifyContent alignItems alignContent - layout_order - layout_fle...

How to compress the image without loosing the quality. You can compress the image just like whatsapp like quality. File externalFile = new File(Environment. getExternalStorageDirectory () , " ProfilePic /helloimg.jpg" ) ; Uri externaluri = Uri. parse (externalFile.getPath()) ; compressImage(externaluri.toString() , "helloimg" ) ; // Method to compress Image Compress image public String compressImage (String imageUri , String imagenameName) { String filePath = getRealPathFromURI(imageUri) ; String fileName = imagenameName ; Bitmap scaledBitmap = null; BitmapFactory.Options options = new BitmapFactory.Options() ; //by setting this field as true, the actual bitmap pixels are not loaded in the memory. Just the bounds are loaded. If //you try the use the bitmap here, you will get null. options. inJustDecodeBounds = true; Bitmap bmp = BitmapFactory. decodeFile (filePath...

WebP is an image file format from Google that provides lossy compression (like JPEG) as well as transparency (like PNG) but can provide better compression than either JPEG or PNG. Lossy WebP images are supported in Android 4.0 (API level 14) and higher, and lossless and transparent WebP images are supported in Android 4.3 (API level 18) and higher. This page shows how to convert images to WebP format and how to convert WebP images to PNG format. Convert images to WebP: Android Studio can convert PNG, JPG, BMP, or static GIF images to WebP format. You can convert individual images or folders of images. To convert an image or folder of images, proceed as follows: Right click on an image file or a folder containing a number of images files, and then click Convert to WebP . The Converting Images to WebP dialog opens. The default settings depend on the minSdkVersion setting for the current module. Figure 1. The Converting Images to WebP dialog. Select either lossy ...

Picking the Color from the Image in Android in HEX and RGB In android we use HEX for color code and in ios we use RGB so here we are gonna work on both. You can download the full source code from github PickColorFromImageAndroid . ImageView picked_imageView ; picked_imageView = (ImageView) findViewById(R.id. imageView2 ) ; picked_imageView .setOnTouchListener( this ) ; picked_imageView .setImageBitmap(bitmapImage) ; OnTouch of picked_imageView we can get the color code in onTouch method. When we touch the imageView we will get the color code from the image and here you can format it in HEX and RGB. @Override public boolean onTouch (View v , MotionEvent event) { Matrix inverse = new Matrix() ; picked_imageView .getImageMatrix().invert(inverse) ; float [] touchPoint = new float [] {event.getX() , event.getY()} ; inverse.mapPoints(touchPoint) ; int x = Integer. valueOf (( int )touchPoint[ 0 ]) ; int y = Integer. valueOf (( int...

In android by default we can scroll the text in horizontal using marquee in layout, but if we want to scroll the text in vertical its not possible by default. So here we will learn to create a custom TextView which will auto-scroll in vertical direction. Source Code:  VerticalScrollingTextView-Android Create a AutoScrollingTextView.class which extends TextView: @SuppressLint ( "AppCompatCustomView" ) public class AutoScrollingTextView extends TextView { private static final float DEFAULT_SPEED = 65.0f ; public Scroller scroller ; public float speed = DEFAULT_SPEED ; public boolean continuousScrolling = true; public AutoScrollingTextView (Context context) { super (context) ; init( null, 0 ) ; scrollerInstance(context) ; } public AutoScrollingTextView (Context context , AttributeSet attrs) { super (context , attrs) ; init(attrs , 0 ) ; scr...