scrollview+listview 条目高度不一致，导致最后一个条目不显示

[{"title":"（ 1363 个子文件 20.17MB ） scrollview+listview 条目高度不一致，导致最后一个条目不显示","children":[{"title":"MyImage.iml <span style='color:#111;'> 861B </span>","children":null,"spread":false},{"title":".gitignore <span style='color:#111;'> 127B </span>","children":null,"spread":false},{"title":".gitignore <span style='color:#111;'> 8B </span>","children":null,"spread":false},{"title":"build.gradle <span style='color:#111;'> 1016B </span>","children":null,"spread":false},{"title":"ExampleInstrumentedTest.java <span style='color:#111;'> 752B </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}]