一个activity悬浮在另一个activity上，背景透明化效果

在anim文件中新建两个xml文件

push_bottom_in.xml

< set xmlns: android = "http://schemas.android.com/apk/res/android" >

< translate

android :duration= "200"

android :fromYDelta= "50%p"

android :toYDelta= "0" />

set >

push_bottom_out.xml

< set xmlns: android = "http://schemas.android.com/apk/res/android" >

< translate

android :duration= "200"

android :fromYDelta= "0"

android :toYDelta= "50%p" />

set >

在values文件夹中的styles中定义效果样式

< style name= "AnimBottom" parent= "@android:style/Animation" >

< item name= "android:windowEnterAnimation" >@anim/push_bottom_in item >

< item name= "android:windowExitAnimation" >@anim/push_bottom_out item >

style >

< style name= "MyDialogStyleBottom" parent= "android:Theme.Dialog" >

< item name= "android:windowAnimationStyle" >@style/AnimBottom item >

< item name= "android:windowFrame" >@null item >

< item name= "android:windowIsFloating" >true item >

< item name= "android:windowIsTranslucent" >true item >

< item name= "android:windowNoTitle" >true item >

< item name= "android:windowBackground" >@android:color/transparent item >

< item name= "android:backgroundDimEnabled" >true item >

style >

注意：在定义的类只能继承Activity （否则会闪退）

在代码中需要加上一段代码使其充满整个屏幕

getWindow().setLayout(ActionBar.LayoutParams. MATCH_PARENT , ActionBar.LayoutParams. MATCH_PARENT );

最后在Layout该布局中引用

< RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"

android :layout_width= "match_parent"

android :layout_height= "match_parent"

android :orientation= "vertical" >

< LinearLayout

android :layout_width= "match_parent"

android :layout_height= "match_parent"

android :gravity= "center_horizontal" >

< LinearLayout

android :layout_width= "match_parent"

android :layout_height= "wrap_content"

android :gravity= "center_horizontal"

android :layout_gravity= "bottom"

android :orientation= "vertical" >

< RelativeLayout

android :layout_width= "fill_parent"

android :layout_height= "65dp"

android :gravity= "center_horizontal"

android :background= "@color/lan" >

< TextView

android :layout_width= "wrap_content"

android :layout_height= "wrap_content"

android :textColor= "@color/bai"

android :textSize= "17.0sp"

android :layout_centerHorizontal= "true"

android :layout_centerVertical= "true"

android :text= "账户选择" />

RelativeLayout >

< ListView

android :id= "@+id/lv_zhifufangshi"

android :layout_width= "fill_parent"

android :layout_height= "wrap_content"

android :background= "@color/bai"

android :divider= "@null"

android :fadingEdge= "none"

android :listSelector= "@android:color/transparent"

android :scrollbars= "none" >

ListView >

LinearLayout >

LinearLayout >

RelativeLayout >