android - Can't align element with toStartOf in a RelativeLayout -


basically have numberpicker aligned right, imageview aligned top left, , 2 buttons in linearlayout container trying align left of picker , bottom of parent. no success. container takes whole space overlapping picker.

<relativelayout     android:id="@+id/cell_1"     android:layout_width="0dp"     android:layout_height="wrap_content"     android:layout_weight="1"     android:animatelayoutchanges="true"     android:background="@color/blue_light"     android:padding="@dimen/spacing_tiny">      <numberpicker         android:id="@+id/np_1"         android:layout_width="wrap_content"         android:layout_height="match_parent"         android:layout_alignparentend="true"         android:layout_margin="@dimen/spacing_tiny"         android:visibility="visible" />      <imageview         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignparentleft="true"         android:layout_alignparentstart="true"         android:layout_alignparenttop="true"         android:layout_margin="@dimen/spacing_tiny" />      <linearlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_alignparentbottom="true"         android:layout_tostartof="@+id/np_1"         android:orientation="vertical"         android:visibility="visible">          <button             style="@style/largeholobutton.secondarybutton"             android:layout_width="match_parent"             android:layout_height="0dp"             android:layout_margin="@dimen/spacing_tiny"             android:layout_weight="1"             android:minwidth="0dp"             android:text="@string/button.updown" />          <button             style="@style/largeholobutton.secondarybutton"             android:layout_width="match_parent"             android:layout_height="0dp"             android:layout_margin="@dimen/spacing_tiny"             android:layout_weight="1"             android:minwidth="0dp"             android:text="@string/button.leftright" />      </linearlayout> </relativelayout>

starting api level 17 cannot use layout_tostartof. should use 

android:layout_toleftof="@+id/np_1"

again api 17 cannot use 'layout_alignparentend'. instead use 

android:layout_alignparentright="true"

and have error relativelayout width set '0dp'. make match_ parent.

the corrected code below you

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/cell_1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:animatelayoutchanges="true" android:background="#000099" android:padding="8dp">  <numberpicker     android:id="@+id/np_1"     android:layout_width="wrap_content"     android:layout_height="match_parent"     android:layout_alignparentright="true"     android:layout_margin="8dp"     android:visibility="visible" />  <imageview     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignparentleft="true"     android:layout_alignparentstart="true"     android:src="@mipmap/ic_launcher"     android:layout_alignparenttop="true"     android:layout_marginleft="8dp"     android:layout_margintop="8dp"     android:layout_above="@+id/linearlayout"     android:layout_toleftof="@+id/np_1"     android:layout_tostartof="@+id/np_1" />  <linearlayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:layout_alignparentbottom="true"     android:layout_toleftof="@+id/np_1"     android:orientation="vertical"     android:visibility="visible"     android:id="@+id/linearlayout">      <button          android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_margin="8dp"         android:layout_weight="1"         android:minwidth="0dp"         android:text="assafsasaf" />      <button          android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_margin="8dp"         android:layout_weight="1"         android:minwidth="0dp"         android:text="sadsadsadsa" />  </linearlayout> </relativelayout>

and looks below image (set colour , padding yours)

http://i.stack.imgur.com/eckf6.png


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