android - ScrollView not scrolling and application restart on orientation change -
i building android application connects bluetooth module. when application created, thread connect module executed. when rotate phone, application restarts , connection thread run again. around this, added
android:configchanges="orientation|screensize" android:windowsoftinputmode="adjustresize|statehidden" to android manifest file. application doesn't restarted, scrollview used in activity not scroll. idea scrollview scrollable , prevent application restarting?
here xml file
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent"> <scrollview android:layout_width="match_parent" android:layout_height="match_parent" android:fillviewport="true" android:layout_above="@+id/imageview"> <linearlayout android:id="@+id/linear" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_above="@+id/imageview" android:background="#bf000000" android:orientation="vertical" tools:context=".mainactivity"> <textview android:id="@+id/txtreceive1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="gone" /> <tablelayout android:id="@+id/table" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff3f3f2" android:shrinkcolumns="*" android:stretchcolumns="*"> <tablerow> <textview android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="ch" /> <textview android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="kwh" /> <textview android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="load" /> <textview android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="date" /> </tablerow> <tablerow> <textview android:id="@+id/t11" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="1" /> <textview android:id="@+id/t12" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t13" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t14" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> </tablerow> <tablerow> <textview android:id="@+id/t21" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="2" /> <textview android:id="@+id/t22" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t23" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t24" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> </tablerow> <tablerow> <textview android:id="@+id/t31" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="3" /> <textview android:id="@+id/t32" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t34" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> </tablerow> <tablerow> <textview android:id="@+id/t41" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="4" /> <textview android:id="@+id/t42" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t43" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t44" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> </tablerow> <tablerow> <textview android:id="@+id/t51" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" android:text="5" /> <textview android:id="@+id/t52" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t53" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> <textview android:id="@+id/t54" android:layout_width="wrap_content" android:gravity="center" android:padding="8dip" /> </tablerow> </tablelayout> <textview android:id="@+id/txtreceive" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_alignparentstart="true" android:layout_below="@+id/table" android:background="#ff8c00" android:padding="6dip" /> <linearlayout android:id="@+id/lin2" android:layout_width="fill_parent" android:layout_height="fill_parent" android:paddingtop="5dp" android:visibility="visible" android:weightsum="2"> <linearlayout android:id="@+id/rel" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="1" android:orientation="vertical" android:visibility="visible" android:weightsum="4"> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/btn_01_small" android:textcolor="#ffa5ff45" /> <textview android:id="@+id/textview3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton1" android:layout_centerhorizontal="true" android:text="channel" android:textsize="22sp" /> <textview android:id="@+id/textview9" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton1" android:layout_centerhorizontal="true" android:text="0" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton2" android:layout_width="fill_parent" android:layout_height="match_parent" android:background="@drawable/btn_02" android:textcolor="#ffa5ff45" /> <textview android:id="@+id/textview6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton2" android:layout_centerhorizontal="true" android:text="kwh" android:textsize="22sp" /> <textview android:id="@+id/textview10" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton2" android:layout_centerhorizontal="true" android:text="000.0" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton3" android:layout_width="fill_parent" android:layout_height="match_parent" android:background="@drawable/btn_03" android:textcolor="#ffa5ff45" /> <textview android:id="@+id/textview7" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton3" android:layout_centerhorizontal="true" android:text="load" android:textsize="22sp" /> <textview android:id="@+id/textview11" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton3" android:layout_centerhorizontal="true" android:text="000" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton4" android:layout_width="fill_parent" android:layout_height="match_parent" android:background="@drawable/btn_04_small" /> <textview android:id="@+id/textview8" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton4" android:layout_centerhorizontal="true" android:text="days" android:textsize="22sp" /> <textview android:id="@+id/textview12" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton4" android:layout_centerhorizontal="true" android:text="000" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> </linearlayout> <linearlayout android:id="@+id/rel2" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_alignparentright="true" android:layout_below="@+id/txtreceive" android:layout_weight="1" android:orientation="vertical" android:visibility="visible" android:weightsum="4"> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton12" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/btn_01_small" android:textcolor="#ffa5ff45" /> <textview android:id="@+id/textview32" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton12" android:layout_centerhorizontal="true" android:text="auto on" android:textsize="22sp" /> <textview android:id="@+id/textview92" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton12" android:layout_centerhorizontal="true" android:text="00:00" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton22" android:layout_width="fill_parent" android:layout_height="match_parent" android:background="@drawable/btn_04_small" android:textcolor="#ffa5ff45" /> <textview android:id="@+id/textview62" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_aligntop="@+id/imagebutton22" android:layout_centerhorizontal="true" android:text="auto off" android:textsize="22sp" /> <textview android:id="@+id/textview102" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignbottom="@+id/imagebutton22" android:layout_centerhorizontal="true" android:text="00:00" android:textcolor="#ffa5ff45" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton31" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_marginbottom="-14dp" android:layout_margintop="7dp" android:background="@drawable/send_btn_01" android:text="set time" android:textsize="22sp" /> </relativelayout> <relativelayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <button android:id="@+id/imagebutton32" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginbottom="-7dp" android:background="@drawable/send_btn_01" android:padding="0dp" android:scaletype="matrix" android:text="recharge" android:textsize="22sp" /> </relativelayout> </linearlayout> </linearlayout> </linearlayout> </scrollview> <imageview android:id="@+id/imageview" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignparentbottom="true" android:layout_alignparentleft="true" android:layout_alignparentstart="true" android:adjustviewbounds="true" android:background="#bf000000" android:src="@drawable/base_irya_left1" />
activities destroyed , recreated on screen rotation, , want resizes ui elements properly.
create bluetooth connection/thread in separate singleton class becomes independent of activity, or make relevant activity members static.
however, sure destroy doesn't leak/persist beyond legitimate application lifecycle.
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