139 lines
3.9 KiB
Java
139 lines
3.9 KiB
Java
package it.nexxa.base64ToGallery;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.util.Calendar;
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import org.apache.cordova.CallbackContext;
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import org.apache.cordova.CordovaPlugin;
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import org.json.JSONArray;
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import org.json.JSONException;
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import android.content.Intent;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.net.Uri;
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import android.os.Build;
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import android.os.Environment;
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import android.util.Base64;
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import android.util.Log;
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/**
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* Base64ToGallery.java
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*
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* Android implementation of the Base64ToGallery for iOS.
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* Inspirated by Joseph's "Save HTML5 Canvas Image to Gallery" plugin
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* http://jbkflex.wordpress.com/2013/06/19/save-html5-canvas-image-to-gallery-phonegap-android-plugin/
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*
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* @author Vegard Løkken <vegard@headspin.no>
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*/
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public class Base64ToGallery extends CordovaPlugin {
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// Consts
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public static final String EMPTY_STR = "";
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@Override
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public boolean execute(String action, JSONArray args,
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CallbackContext callbackContext) throws JSONException {
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String base64 = args.optString(0);
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String filePrefix = args.optString(1);
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boolean mediaScannerEnabled = args.optBoolean(2);
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// isEmpty() requires API level 9
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if (base64.equals(EMPTY_STR)) {
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callbackContext.error("Missing base64 string");
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}
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// Create the bitmap from the base64 string
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byte[] decodedString = Base64.decode(base64, Base64.DEFAULT);
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Bitmap bmp = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
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if (bmp == null) {
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callbackContext.error("The image could not be decoded");
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} else {
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// Save the image
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File imageFile = savePhoto(bmp, filePrefix);
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if (imageFile == null) {
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callbackContext.error("Error while saving image");
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}
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// Update image gallery
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if (mediaScannerEnabled) {
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scanPhoto(imageFile);
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}
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callbackContext.success(imageFile.toString());
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}
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return true;
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}
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private File savePhoto(Bitmap bmp, String prefix) {
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File retVal = null;
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try {
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String deviceVersion = Build.VERSION.RELEASE;
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Calendar c = Calendar.getInstance();
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String date = EMPTY_STR
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+ c.get(Calendar.YEAR)
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+ c.get(Calendar.MONTH)
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+ c.get(Calendar.DAY_OF_MONTH)
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+ c.get(Calendar.HOUR_OF_DAY)
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+ c.get(Calendar.MINUTE)
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+ c.get(Calendar.SECOND);
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int check = deviceVersion.compareTo("2.3.3");
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File folder;
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/*
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* File path = Environment.getExternalStoragePublicDirectory(
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* Environment.DIRECTORY_PICTURES ); //this throws error in Android
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* 2.2
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*/
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if (check >= 1) {
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folder = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
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if (!folder.exists()) {
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folder.mkdirs();
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}
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} else {
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folder = Environment.getExternalStorageDirectory();
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}
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File imageFile = new File(folder, prefix + date + ".png");
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FileOutputStream out = new FileOutputStream(imageFile);
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bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
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out.flush();
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out.close();
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retVal = imageFile;
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} catch (Exception e) {
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Log.e("Base64ToGallery", "An exception occured while saving image: " + e.toString());
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}
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return retVal;
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}
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/**
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* Invoke the system's media scanner to add your photo to the Media Provider's database,
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* making it available in the Android Gallery application and to other apps.
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*/
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private void scanPhoto(File imageFile) {
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Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
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Uri contentUri = Uri.fromFile(imageFile);
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mediaScanIntent.setData(contentUri);
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cordova.getActivity().sendBroadcast(mediaScanIntent);
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}
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}
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