优化裁剪部分

app/src/main/java/com/miekir/ocr/widget/CropView.java

@@ -90,7 +90,6 @@ public class CropView extends View {
 
     public CropView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-
         // 获取到宽高之后再初始化
         getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
             @Override
@@ -100,6 +99,7 @@ public class CropView extends View {
                 BitmapFactory.Options horizontalOptions = new BitmapFactory.Options();
                 BitmapFactory.decodeResource(getResources(), R.mipmap.move_horizontal, horizontalOptions);
                 horizontalOptions.inJustDecodeBounds = true;
+                // 图片放在不同的文件夹下，outHeight会不一样，放在dpi越高的文件夹，值越小
                 minWidth = horizontalOptions.outHeight * 2;
                 minHeight = minWidth;
                 setScanArea(SCAN_TYPE_ALL); //height is ready
@@ -117,7 +117,8 @@ public class CropView extends View {
             case SCAN_TYPE_POSTAL:
                 // 邮箱
                 coverWidth = (int) (getWidth()*0.815);
-                coverHeight = (int) (getWidth()*0.3);
+                // 最小高度不能小于图片的高度
+                coverHeight = Math.max(minHeight, (int)(getWidth()*0.3));
                 sX = (getWidth()-coverWidth)/2;
                 sY = (int) (getWidth()*0.177);
                 break;