ImageView onlongclick为中等长度的按键调用了两次

Question

我正在尝试实现一个在imageview收到longclick时调用全屏图像查看器活动的imageview。代码和imageview的xml声明如下。如果按住图像，图像查看器活动将按照我的预期启动，如果图像被短暂点击则无效，也如我所料。但是，如果我按下图像然后在短暂停顿后将其释放，则全屏图像查看器活动将打开两次。提前感谢您的建议。

        try {
            // get input stream
            String path = "MyData/MyImages/" + myClass.getRESOURCE();
            ins = getAssets().open(path);
            // load image as Drawable
            Drawable d = Drawable.createFromStream(ins, null);
            // set image to ImageView
            theImage.setImageDrawable(d);
            theImage.setVisibility(View.VISIBLE);
            theImage.setOnLongClickListener(new View.OnLongClickListener() {
                //@Override
                public boolean onLongClick(View v) {
                    Intent intent = new Intent(startActivity.this, MultiTouchActivity.class);
                    startActivity(intent);
                    return true;
                }
            });
            }
        catch (IOException ex) {
            Log.e("whoops", ""+ex);
            }
        finally {
            //close input
            if (ins != null) {
                try {
                    ins.close();
                    }
                catch (IOException ioex) {
                    //Very bad things just happened... handle it
                    }
                }
            }
        }

<ImageView
    android:id="@+id/imageView1"
    android:layout_alignParentTop="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:scaleType="fitStart"
    android:layout_alignParentStart="false"
    android:layout_centerHorizontal="true"
    android:adjustViewBounds="true"
    android:src="@drawable/square"
    android:hapticFeedbackEnabled="false"
    android:visibility="gone"/>