android中gridview的item长按拖动，删除（完美解决bug）

[{"title":"（ 122 个子文件 2.86MB ） android中gridview的item长按拖动，删除（完美解决bug）","children":[{"title":".project <span style='color:#111;'> 848B </span>","children":null,"spread":false},{"title":"project.properties <span style='color:#111;'> 607B </span>","children":null,"spread":false},{"title":"DragGrid.java <span style='color:#111;'> 22.86KB </span>","children":null,"spread":false},{"title":"MainActivity.java <span style='color:#111;'> 4.75KB </span>","children":null,"spread":false},{"title":"SquareLayout.java <span style='color:#111;'> 1.09KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]