transition - TransitionManager scene animation behavior with root layout -
i'm testing out android kit kat transition feature. when transition happens, margins of root layout getting padded. find behavior strange.
the source
public class mainactivity extends actionbaractivity { button btn; textview txt; @targetapi(build.version_codes.kitkat) @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); txt = (textview)findviewbyid(r.id.text); btn = (button)findviewbyid(r.id.btn); btn.setonclicklistener(new view.onclicklistener() { @override public void onclick(view view) { viewgroup root = (viewgroup)findviewbyid(r.id.root); scene scene = scene.getsceneforlayout(root, r.layout.activity_main2, mainactivity.this); transitionmanager.go(scene); } }); } ... } activity_main.xml
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" android:paddingbottom="@dimen/activity_vertical_margin" android:id="@+id/root" tools:context="com.sebouh00.test.scenes.mainactivity"> <button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="click me" android:layout_marginbottom="12dp"/> <textview android:id="@+id/text" android:layout_below="@id/btn" android:text="@string/hello_world" android:layout_width="match_parent" android:layout_height="match_parent" android:textsize="18dp"/> </relativelayout> activity_main2.xml
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" android:paddingbottom="@dimen/activity_vertical_margin" android:id="@+id/root" tools:context="com.sebouh00.test.scenes.mainactivity"> <button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="click me" android:layout_marginbottom="12dp"/> <imageview android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@id/btn" android:id="@+id/img" android:src="@drawable/flag" android:layout_marginbottom="12dp"/> <textview android:id="@+id/text" android:layout_below="@id/img" android:text="@string/hello_world" android:layout_width="match_parent" android:layout_height="match_parent" android:textsize="18dp"/> </relativelayout> results in this unless remove paddings activity_main2.xml
any ideas why?
it's because view produced inflating activity_main2 gets inserted scene's root, i.e. r.id.root relativelayout, padding r.id.root still applied.
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