Android Image Editor

Question

I want to create an Android app where I can take a picture from the SD card or from the camera. After taking the picture, I have to edit it, like adding text in the picture, cropping the picture, add .gif type file to the picture. Taking a picture isn't the problem, but I can't understand how to write code to edit the picture. I need to know whether I have to use OpenGL for this. Suggestions and helpful links wanted.

Answer 1

Your question is too vague. I provide some guide.

UPDATE 2020: You can browser all image processing library listed in Android Asernal https://android-arsenal.com/tag/47

1. Using Aviary SDK now become Creative SDK . It also supports iOS and WindowPhone7. Aviary provide most of function such as Orientation, Crop, and Sharpness,Red-Eye, Whiten, and Blemish,Stickers, Drawing, Text, and Meme (beta),Brightness, Saturation, and Contrast and custom Options. .
2. Fotor SDK
3. Creative SDK by Adobe
4. Directly process bitmap.

import android.graphics.Bitmap;      public class ProcessingImage {     private Bitmap defaultImg;     private int idBitmap;      public int getIdBitmap() {         return idBitmap;     }      public void setIdBitmap(int idBitmap) {         this.idBitmap = idBitmap;     }      public Bitmap getDefaultImg() {         return defaultImg;     }      public void setDefaultImg(Bitmap defaultImg) {         this.defaultImg = defaultImg;     }      public ProcessingImage() {     }      public Bitmap processingI(Bitmap myBitmap) {         return myBitmap;     }      public Bitmap TintThePicture(int deg, Bitmap defaultBitmap) {         int w = defaultBitmap.getWidth();         int h = defaultBitmap.getHeight();          int[] pix = new int[w * h];         defaultBitmap.getPixels(pix, 0, w, 0, 0, w, h);          double angle = (3.14159d * (double) deg) / 180.0d;         int S = (int) (256.0d * Math.sin(angle));         int C = (int) (256.0d * Math.cos(angle));          int r, g, b, index;         int RY, BY, RYY, GYY, BYY, R, G, B, Y;          for (int y = 0; y < h; y++) {             for (int x = 0; x < w; x++) {                 index = y * w + x;                 r = (pix[index] >> 16) & 0xff;                 g = (pix[index] >> 8) & 0xff;                 b = pix[index] & 0xff;                 RY = (70 * r - 59 * g - 11 * b) / 100;                 BY = (-30 * r - 59 * g + 89 * b) / 100;                 Y = (30 * r + 59 * g + 11 * b) / 100;                 RYY = (S * BY + C * RY) / 256;                 BYY = (C * BY - S * RY) / 256;                 GYY = (-51 * RYY - 19 * BYY) / 100;                 R = Y + RYY;                 R = (R < 0) ? 0 : ((R > 255) ? 255 : R);                 G = Y + GYY;                 G = (G < 0) ? 0 : ((G > 255) ? 255 : G);                 B = Y + BYY;                 B = (B < 0) ? 0 : ((B > 255) ? 255 : B);                 pix[index] = 0xff000000 | (R << 16) | (G << 8) | B;             }         }          Bitmap bm = Bitmap.createBitmap(w, h, defaultBitmap.getConfig());         bm.setPixels(pix, 0, w, 0, 0, w, h);          pix = null;         return bm;      }      } 

Usage: Process Indigo color: TintThePicture(180, myBitmap); Process Green color: TintThePicture(300, myBitmap);

5. Use android.media.effect is provided in API14

6. Effect Pro

7. Android-Image-Edit

8. android-image-editor

9. smartcrop-android (This library will analyze best crop position and size by calculating some features; edge, skin tone, staturation and face.)