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<android.support.design.widget.CoordinatorLayout android:layout_width="match_parent" android:layout_height="match_parent"

取代RadioGroup和RadioButton创建底部选择栏使用AndroidStudio自动创建Activity，选择Bottom Navigation Activity重点内容:布局:<android.support.design.widget.BottomNavigationView android:id="@+id/navigation" andr...

设置显示模式app:labelVisibilityMode="labeled" |selected|unselected|auto设置字体颜色app:itemTextColor="@drawable/sel_text_color_select"<selector xmlns:android="http://schemas.android.com/apk/res/android...

android:drawableStart="@drawable/sel_select"android:button="@null"此处不要使用background, 否则padding失效<selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:draw...