如何从LongLa上的SD卡中删除gridview项目？

Question

我已经看过有关如何从SD卡中删除图像的所有其他帖子。 我知道之前已经问过，我已经实施了人们提出的所有建议，但是我一直没有得到任何结果。 所有图像都保留在我的SD卡目录中。 所以我希望有人能找到我做错了什么，因为我在这里完全迷失了......

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_cookbook);

    final GridView gridview = (GridView) findViewById(R.id.gridView);
    myImageAdapter = new ImageAdapter(this);
    gridview.setAdapter(myImageAdapter);
    gridview.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {

        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view,
                                       int position, long id) {
            Toast.makeText(CookbookActivity.this, "You've removed an item", Toast.LENGTH_SHORT).show();

            // Removes the image from the gridview
            myImageAdapter.remove(position);

            // Updates the gridview
            myImageAdapter.notifyDataSetChanged();
            int i = 0;
            i++;
            // Trying to delete the LongClicked Image from the SD card
            String myFile = "/Food Inspiration/" + "pic-" + i + ".png";

            String myPath = Environment.getExternalStorageDirectory()+myFile;

            File f = new File(myPath);
            Boolean deleted = f.delete();

            return true;
        }
    });

更新 我发现这是因为我的图像的文件路径。 我有一个while循环来使图像名称增加。 所以Image1，Image2等等。

代码

int i = 0;
            do {
                sdImageMainDirectory = new File(root, "pic-" + i + ".png");
                i++;
            } while (sdImageMainDirectory.exists());

更新2.0 好吧，所以我设法用这个循环一次删除所有项目：

// Deletes EVERY image when LongClicked... cant make it delete 1 image
                for (int i = 0; i < 100; i++){
                    // Trying to delete the LongClicked Image from the SD card
                    String myFile = "/Food Inspiration/" + "pic-" + i + ".png";

                    String myPath = Environment.getExternalStorageDirectory()+myFile;

                    File f = new File(myPath);
                    Boolean deleted = f.delete();

                }

有谁知道如何只保存一个我长按的项目，而不是一次保存每个项目。我知道我删除了所有内容，因为我＆lt; 100但这仅用于测试目的。我希望有人能够回答如何一次删除1个项目。