android - how to make app a percent of the screen size -

i trying make app image below, setting app percent of whole screen (not setting dp), no matter type of phone using, app take same screen percentage. main activity consists of 2 fragments in 1 linearlayout.

android:layout_width="300dp" android:layout_height="300dp"   xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_gravity="center" android:background="@drawable/rounded_edges" android:theme="@style/theme.appcompat.light.dialog.alert">  <!-- create container (framelayout) body fragment switch other fragments on button clicks-->   <fragment     android:id="@+id/menufragment"     android:layout_width="wrap_content"     android:layout_height="match_parent"     android:layout_margin="5dp"     class="it.anddev.bradipao.janus.menufragment"     tools:layout="@layout/fr_menu"> </fragment>  <framelayout     android:id="@+id/container"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:layout_gravity="end" /> 

enter image description here

i want height , width percent of phone height , width shown here.

you should use linearlayout container, , use these properties:

• weightsum in linearlayout, set 1.

• layout_weight in every child of linearlayout. example:

  <linearlayout      xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="horizontal"      android:layout_width="match_parent"      android:layout_height="match_parent"      android:weightsum="1">       <linearlayout           android:orientation="vertical"           android:layout_width="0dp"           android:layout_height="match_parent"           android:layout_weight="0.75">            ....       </linearlayout>       <linearlayout           android:orientation="vertical"           android:layout_width="0dp"           android:layout_height="match_parent"           android:layout_weight="0.25">           ....      </linearlayout>  </linearlayout> 

first layout take 75% of screen , second 25%.

note when using weights, height and/or width has 0dp. can make complex need.