我怎么能说我的应用程序向上或向下滚动而不用我的手指滚动？

Question

我创建了一个应用程序，我有一个listview，所以现在我正在努力实现三星的sdk来管理空中手势和它的工作正常，因为应用程序识别我滑动时没有触摸屏幕，但是我想做的是当用户做手势时实现滚动up和raw_record = LOAD '$inputPath' -- USING com.test.parser.TestParser; record_project = FOREACH raw_record GENERATE field1, field2, field3, field4; sl_record = FILTER record_project BY (field1=='1' OR field1=='2'); split sl_record into rec1 if field1=='1',rec2 if field1=='2'; rec2Sample = SAMPLE rec2 $samplingRate; finalRec1 = FOREACH rec1 GENERATE -1 as label1, 1 as label2, field1 as label3, field2 as label4, field3 as label5, field4 as label6; finalRec2 = FOREACH rec2 GENERATE -1 as label1, 1 as label2, field1 as label3, field2 as label4, field3 as label5, field4 as label6; unionRec = UNION finalRec1, finalRec2; unionRecWithId = FOREACH unionRec GENERATE label1, label2, label3, label4, label5, label6,(chararray)RANDOM() AS id; mixedRec = ORDER unionRecWithId by id ASC; STORE mixedRec INTO '$outputPath' USING PigStorage(','); 。所以我的问题是我怎么能对我的应用程序向上或向下滚动？应该是模仿用户按下屏幕并滚动

时所做的事情

Answer 1

在ListView中你可以使用smoothScrollToPositionFromTop或smoothScrollBy方法