Android set navigation drawer list to open exact half of the screen for all device screen

Question

I want to open the drawerlist to the half of the screen for all different device. i tried hard coded values for layout_margineleft 200dp or 100dp to the drawerlist. but it doesn't work in all device it different from device to device. so how can i maintain the exactly half of the screen for drawerlist. i also tried various function like setLeft(int) etc.but some of them doesn't work due to i use minimum version 8. So please help me. thanks in advance.

    mDrawerLayout = (DrawerLayout) view.findViewById(R.id.drawer_layout);     mDrawerList = (ListView) view.findViewById(R.id.top_sectionlist); 

xml for that:

<?xml version="1.0" encoding="utf-8"?>  <android.support.v4.widget.DrawerLayout    xmlns:android="http://schemas.android.com/apk/res/android"   android:id="@+id/drawer_layout"   android:layout_width="match_parent"   android:layout_height="match_parent"   android:background="@color/setting_background" >  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="match_parent"  android:layout_height="fill_parent"  android:layout_margin="@dimen/top_news_linear_margin"  android:background="@color/news_list_divider_color"  android:orientation="vertical" android:padding="@dimen/top_news_linear_padding" >  </RelativeLayout>  <ListView  android:id="@+id/drawer_list"  android:layout_width="wrap_content"  android:layout_height="fill_parent"  android:layout_gravity="right"  android:layout_alignParentTop="true"  android:background="@color/setting_background"  android:cacheColorHint="@android:color/transparent"  android:choiceMode="singleChoice"  android:divider="@color/news_list_divider_color"  android:dividerHeight="@dimen/news_list_divider_height"  />  </android.support.v4.widget.DrawerLayout> 

Answer 1

set the width for ListView dynamically...

    mDrawerLayout = (DrawerLayout) view.findViewById(R.id.drawer_layout);     mDrawerList = (ListView) view.findViewById(R.id.top_sectionlist);      int width = getResources().getDisplayMetrics().widthPixels/2;     DrawerLayout.LayoutParams params = (android.support.v4.widget.DrawerLayout.LayoutParams) mDrawerList.getLayoutParams();     params.width = width;     mDrawerList.setLayoutParams(params); 

Answer 2

You have to manual calculate the screen size and set dynamic width to the drawer layout at runtime, here is how to get device Screen Width and Height at run time

Using this code you can get runtime Display's Width & Height

DisplayMetrics displaymetrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(displaymetrics); int height = displaymetrics.heightPixels; int width = displaymetrics.widthPixels; 

Now, you need to divide the width by 2

int newWidth=width/2; 

Now set width to ListView like this

drawer_list.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,newWidth)); 

This will work for all the devices and will give uniform size across all.