android - Using an image streches dialog to full height -

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i want use image dialog's background makes dialog high screen. checked this , this , this answers , suggest same it's not working me.

<?xml version="1.0" encoding="utf-8"?> <relativelayout     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:cliptopadding="true"     xmlns:android="http://schemas.android.com/apk/res/android">      <imageview         android:src="@drawable/wood"         android:cliptopadding="true"         android:scaletype="fitxy"         android:adjustviewbounds="true"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_aligntop="@+id/dialog_layout_main"         android:layout_alignbottom="@id/dialog_layout_main"         android:layout_alignleft="@id/dialog_layout_main"         android:layout_alignright="@id/dialog_layout_main" />  <linearlayout     android:id="@+id/dialog_layout_main"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:cliptopadding="true"     android:orientation="vertical"     android:padding="20dp"     android:background="@drawable/wood">       <textview         android:id="@+id/tv_1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center_horizontal"         android:gravity="center_horizontal"         android:text="you're getting better!"         android:textsize="24sp"         android:textcolor="#486783"/>      <textview         android:id="@+id/tv_2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center_horizontal"         android:gravity="center_horizontal"         android:layout_margintop="10dp"         android:visibility="gone"         android:text="do know better?"         android:textsize="22sp"         android:textcolor="#486783"/>      <textview         android:id="@+id/tv_3"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center_horizontal"         android:gravity="center_horizontal"         android:layout_margintop="20dp"         android:text="sign in google+ save progress in cloud , compare results against other players!"         android:textsize="20sp"         android:textcolor="#486783"/>      <button         android:id="@+id/btn_signin"         android:background="@drawable/google_button_selector"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_marginleft="20dp"         android:layout_marginright="20dp"         android:layout_margintop="20dp"         android:gravity="center"         android:layout_gravity="center_horizontal"         android:text="sign in google+"         android:textcolor="#ffffff"         android:textsize="18sp" />  </linearlayout>      </relativelayout>

oh, , specify width of layout as

displaymetrics metrics = getresources().getdisplaymetrics(); int width = metrics.widthpixels; dialogsignin.getwindow().setlayout((9 * width) / 10, linearlayout.layoutparams.wrap_content);


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