1.效果图2.源代码MainActivity.javapublicclassMainActivityextendsAppCompatActivity{publicenumChartType{LINE_CHART,COLUMN_CHART,PIE_CHART,BUBBLE_CHART,PREVIEW_LINE_CHART,PREVIEW_COLUMN_CHART,OTHER}@OverrideprotectedvoidonCreate(BundlesavedInstanceState)...
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