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Merge pull request #58 from adithyaxx/v2-embedding-migration
Migrated to v2 embedding
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android/src/main/java/com/example/flutternativeimage/FlutterNativeImagePlugin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,248 +1,44 @@ | ||
| package com.example.flutternativeimage; | ||
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| import android.app.Activity; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.BitmapFactory; | ||
| import android.media.ExifInterface; | ||
| import android.util.Log; | ||
| import android.content.Context; | ||
|
|
||
| import java.io.ByteArrayOutputStream; | ||
| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.util.Arrays; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
|
|
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| import io.flutter.plugin.common.MethodCall; | ||
| import io.flutter.embedding.engine.plugins.FlutterPlugin; | ||
| import io.flutter.plugin.common.BinaryMessenger; | ||
| import io.flutter.plugin.common.MethodChannel; | ||
| import io.flutter.plugin.common.MethodChannel.MethodCallHandler; | ||
| import io.flutter.plugin.common.MethodChannel.Result; | ||
| import io.flutter.plugin.common.PluginRegistry.Registrar; | ||
| import io.flutter.plugin.common.PluginRegistry; | ||
|
|
||
| /** | ||
| * FlutterNativeImagePlugin | ||
| */ | ||
| public class FlutterNativeImagePlugin implements MethodCallHandler { | ||
| private final Activity activity; | ||
| public class FlutterNativeImagePlugin implements FlutterPlugin { | ||
| private static final String CHANNEL_NAME = "flutter_native_image"; | ||
| private MethodChannel channel; | ||
| /** | ||
| * Plugin registration. | ||
| */ | ||
| public static void registerWith(Registrar registrar) { | ||
| final MethodChannel channel = new MethodChannel(registrar.messenger(), "flutter_native_image"); | ||
| channel.setMethodCallHandler(new FlutterNativeImagePlugin(registrar.activity())); | ||
| } | ||
|
|
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| private FlutterNativeImagePlugin(Activity activity) { | ||
| this.activity = activity; | ||
| public static void registerWith(PluginRegistry.Registrar registrar) { | ||
| final FlutterNativeImagePlugin plugin = new FlutterNativeImagePlugin(); | ||
| plugin.setupChannel(registrar.messenger(), registrar.context()); | ||
| } | ||
|
|
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| @Override | ||
| public void onMethodCall(MethodCall call, Result result) { | ||
| if(call.method.equals("compressImage")) { | ||
| String fileName = call.argument("file"); | ||
| int resizePercentage = call.argument("percentage"); | ||
| int targetWidth = call.argument("targetWidth") == null ? 0 : (int) call.argument("targetWidth"); | ||
| int targetHeight = call.argument("targetHeight") == null ? 0 : (int) call.argument("targetHeight"); | ||
| int quality = call.argument("quality"); | ||
|
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| File file = new File(fileName); | ||
|
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| if(!file.exists()) { | ||
| result.error("file does not exist", fileName, null); | ||
| return; | ||
| } | ||
|
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| Bitmap bmp = BitmapFactory.decodeFile(fileName); | ||
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); | ||
|
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| int newWidth = targetWidth == 0 ? (bmp.getWidth() / 100 * resizePercentage) : targetWidth; | ||
| int newHeight = targetHeight == 0 ? (bmp.getHeight() / 100 * resizePercentage) : targetHeight; | ||
|
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| bmp = Bitmap.createScaledBitmap( | ||
| bmp, newWidth, newHeight, true); | ||
|
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| // reconfigure bitmap to use RGB_565 before compressing | ||
| // fixes https://github.com/btastic/flutter_native_image/issues/47 | ||
| Bitmap newBmp = bmp.copy(Bitmap.Config.RGB_565, false); | ||
| newBmp.compress(Bitmap.CompressFormat.JPEG, quality, bos); | ||
|
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| try { | ||
| String outputFileName = File.createTempFile( | ||
| getFilenameWithoutExtension(file).concat("_compressed"), | ||
| ".jpg", | ||
| activity.getExternalCacheDir() | ||
| ).getPath(); | ||
|
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| OutputStream outputStream = new FileOutputStream(outputFileName); | ||
| bos.writeTo(outputStream); | ||
|
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| copyExif(fileName, outputFileName); | ||
|
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| result.success(outputFileName); | ||
| } catch (FileNotFoundException e) { | ||
| e.printStackTrace(); | ||
| result.error("file does not exist", fileName, null); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| result.error("something went wrong", fileName, null); | ||
| } | ||
|
|
||
| return; | ||
| } | ||
| if(call.method.equals("getImageProperties")) { | ||
| String fileName = call.argument("file"); | ||
| File file = new File(fileName); | ||
|
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| if(!file.exists()) { | ||
| result.error("file does not exist", fileName, null); | ||
| return; | ||
| } | ||
|
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| BitmapFactory.Options options = new BitmapFactory.Options(); | ||
| options.inJustDecodeBounds = true; | ||
| BitmapFactory.decodeFile(fileName,options); | ||
| HashMap<String, Integer> properties = new HashMap<String, Integer>(); | ||
| properties.put("width", options.outWidth); | ||
| properties.put("height", options.outHeight); | ||
|
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| int orientation = ExifInterface.ORIENTATION_UNDEFINED; | ||
| try { | ||
| ExifInterface exif = new ExifInterface(fileName); | ||
| orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED); | ||
| } catch(IOException ex) { | ||
| // EXIF could not be read from the file; ignore | ||
| } | ||
| properties.put("orientation", orientation); | ||
|
|
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| result.success(properties); | ||
| return; | ||
| } | ||
| if(call.method.equals("cropImage")) { | ||
| String fileName = call.argument("file"); | ||
| int originX = call.argument("originX"); | ||
| int originY = call.argument("originY"); | ||
| int width = call.argument("width"); | ||
| int height = call.argument("height"); | ||
|
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| File file = new File(fileName); | ||
|
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| if(!file.exists()) { | ||
| result.error("file does not exist", fileName, null); | ||
| return; | ||
| } | ||
|
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| Bitmap bmp = BitmapFactory.decodeFile(fileName); | ||
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); | ||
|
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| try { | ||
| bmp = Bitmap.createBitmap(bmp, originX, originY, width, height); | ||
| } catch(IllegalArgumentException e) { | ||
| e.printStackTrace(); | ||
| result.error("bounds are outside of the dimensions of the source image", fileName, null); | ||
| } | ||
|
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| bmp.compress(Bitmap.CompressFormat.JPEG, 100, bos); | ||
| bmp.recycle(); | ||
| OutputStream outputStream = null; | ||
| try { | ||
| String outputFileName = File.createTempFile( | ||
| getFilenameWithoutExtension(file).concat("_cropped"), | ||
| ".jpg", | ||
| activity.getExternalCacheDir() | ||
| ).getPath(); | ||
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| outputStream = new FileOutputStream(outputFileName); | ||
| bos.writeTo(outputStream); | ||
|
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| copyExif(fileName, outputFileName); | ||
|
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| result.success(outputFileName); | ||
| } catch (FileNotFoundException e) { | ||
| e.printStackTrace(); | ||
| result.error("file does not exist", fileName, null); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| result.error("something went wrong", fileName, null); | ||
| }finally { | ||
| if (outputStream != null) { | ||
| try { | ||
| outputStream.close(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
|
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| return; | ||
| } | ||
| if (call.method.equals("getPlatformVersion")) { | ||
| result.success("Android " + android.os.Build.VERSION.RELEASE); | ||
| } else { | ||
| result.notImplemented(); | ||
| } | ||
| public void onAttachedToEngine(FlutterPlugin.FlutterPluginBinding binding) { | ||
| setupChannel(binding.getFlutterEngine().getDartExecutor(), binding.getApplicationContext()); | ||
| } | ||
|
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| private void copyExif(String filePathOri, String filePathDest) { | ||
| try { | ||
| ExifInterface oldExif = new ExifInterface(filePathOri); | ||
| ExifInterface newExif = new ExifInterface(filePathDest); | ||
|
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| List<String> attributes = | ||
| Arrays.asList( | ||
| "FNumber", | ||
| "ExposureTime", | ||
| "ISOSpeedRatings", | ||
| "GPSAltitude", | ||
| "GPSAltitudeRef", | ||
| "FocalLength", | ||
| "GPSDateStamp", | ||
| "WhiteBalance", | ||
| "GPSProcessingMethod", | ||
| "GPSTimeStamp", | ||
| "DateTime", | ||
| "Flash", | ||
| "GPSLatitude", | ||
| "GPSLatitudeRef", | ||
| "GPSLongitude", | ||
| "GPSLongitudeRef", | ||
| "Make", | ||
| "Model", | ||
| "Orientation"); | ||
| for (String attribute : attributes) { | ||
| setIfNotNull(oldExif, newExif, attribute); | ||
| } | ||
|
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| newExif.saveAttributes(); | ||
|
|
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| } catch (Exception ex) { | ||
| Log.e("FlutterNativeImagePlugin", "Error preserving Exif data on selected image: " + ex); | ||
| } | ||
| } | ||
|
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| private void setIfNotNull(ExifInterface oldExif, ExifInterface newExif, String property) { | ||
| if (oldExif.getAttribute(property) != null) { | ||
| newExif.setAttribute(property, oldExif.getAttribute(property)); | ||
| } | ||
| @Override | ||
| public void onDetachedFromEngine(FlutterPlugin.FlutterPluginBinding binding) { | ||
| teardownChannel(); | ||
| } | ||
|
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| private static String pathComponent(String filename) { | ||
| int i = filename.lastIndexOf(File.separator); | ||
| return (i > -1) ? filename.substring(0, i) : filename; | ||
| private void setupChannel(BinaryMessenger messenger, Context context) { | ||
| channel = new MethodChannel(messenger, CHANNEL_NAME); | ||
| MethodCallHandlerImpl handler = new MethodCallHandlerImpl(context); | ||
| channel.setMethodCallHandler(handler); | ||
| } | ||
|
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| private static String getFilenameWithoutExtension(File file) { | ||
| String fileName = file.getName(); | ||
|
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| if (fileName.indexOf(".") > 0) { | ||
| return fileName.substring(0, fileName.lastIndexOf(".")); | ||
| } else { | ||
| return fileName; | ||
| } | ||
| private void teardownChannel() { | ||
| channel.setMethodCallHandler(null); | ||
| channel = null; | ||
| } | ||
| } |
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