修复三星手机拍照的竖图在编辑器中显示成横图的问题

Author: yuruiyin

richeditor/src/main/java/com/yuruiyin/richeditor/RichEditText.java

@@ -39,10 +39,7 @@
 import com.yuruiyin.richeditor.model.RichEditorBlock;
 import com.yuruiyin.richeditor.model.StyleBtnVm;
 import com.yuruiyin.richeditor.span.BlockImageSpan;
-import com.yuruiyin.richeditor.utils.ClipboardUtil;
-import com.yuruiyin.richeditor.utils.FileUtil;
-import com.yuruiyin.richeditor.utils.ViewUtil;
-import com.yuruiyin.richeditor.utils.WindowUtil;
+import com.yuruiyin.richeditor.utils.*;
 import ren.qinc.edit.PerformEdit;
 
 import java.io.File;
@@ -369,8 +366,16 @@ private void insertBlockImageInternal(Uri uri, @NonNull BlockImageSpanVm blockIm
         try {
             InputStream is = mContext.getContentResolver().openInputStream(
                     uri);
-            Bitmap bitmap = BitmapFactory.decodeStream(is);
-            Drawable drawable = new BitmapDrawable(mContext.getResources(), bitmap);
+            String filePath = FileUtil.getFileRealPath(mContext, uri);
+            Bitmap resBitmap;
+            int degree = BitmapUtil.readPictureDegree(filePath);
+            if (degree > 0) {
+                // 若图片角度大于0，则需要旋转角度
+                resBitmap = BitmapUtil.rotateBitmap(degree, filePath);
+            } else {
+                resBitmap = BitmapFactory.decodeStream(is);
+            }
+            Drawable drawable = new BitmapDrawable(mContext.getResources(), resBitmap);
             drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
                     drawable.getIntrinsicHeight());
             is.close();

richeditor/src/main/java/com/yuruiyin/richeditor/utils/BitmapUtil.java

@@ -0,0 +1,81 @@
+package com.yuruiyin.richeditor.utils;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Matrix;
+import android.media.ExifInterface;
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ * Title:
+ * Description:
+ *
+ * @author yuruiyin
+ * @version 2019-05-29
+ */
+public class BitmapUtil {
+
+    public static int readPictureDegree(String path) {
+        int degree = 0;
+        try {
+            ExifInterface exifInterface = new ExifInterface(path);
+            int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
+            switch (orientation) {
+                case ExifInterface.ORIENTATION_ROTATE_90:
+                    degree = 90;
+                    break;
+                case ExifInterface.ORIENTATION_ROTATE_180:
+                    degree = 180;
+                    break;
+                case ExifInterface.ORIENTATION_ROTATE_270:
+                    degree = 270;
+                    break;
+                default:
+                    degree = 0;
+                    break;
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return degree;
+    }
+
+    /**
+     * 判断拍照 图片是否旋转
+     *
+     * @param degree 图片的角度
+     * @param filePath 文件路径
+     */
+    public static Bitmap rotateBitmap(int degree, String filePath) {
+        if (degree > 0) {
+            // 针对相片有旋转问题的处理方式
+            try {
+                //获取缩略图显示到屏幕上
+                BitmapFactory.Options opts = new BitmapFactory.Options();
+                opts.inSampleSize = 2;
+                Bitmap bitmap = BitmapFactory.decodeFile(filePath, opts);
+                return rotateBitmapInternal(degree, bitmap);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * 旋转图片
+     */
+    private static Bitmap rotateBitmapInternal(int angle, Bitmap bitmap) {
+        //旋转图片 动作
+        Matrix matrix = new Matrix();
+        matrix.postRotate(angle);
+        // 创建新的图片
+        Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
+                bitmap.getWidth(), bitmap.getHeight(), matrix, true);
+        return resizedBitmap;
+    }
+
+
+}