java - Scaling drawable resources -

i have done image editing of application want make fit every device scaling them different sizes. have found site put image scales different screen densities when put in project not adapt screen.

here's code:

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"     android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     android:paddingbottom="@dimen/activity_vertical_margin" tools:context=".mainactivity"     android:background="@drawable/backgroundapp"     android:orientation="vertical">       <imagebutton         android:id="@+id/btnswitch"         android:layout_width="105dp"         android:layout_height="105dp"         android:src="@drawable/poweroffline"         android:background="@null"         android:layout_alignparenttop="true"         android:layout_centerhorizontal="true"         android:layout_margintop="65dp" />      <imagebutton         android:id="@+id/flashblinkbutton"         android:layout_width="75dp"         android:layout_height="75dp"         android:src="@drawable/blinkoffline"         android:background="@null"         android:layout_gravity="center_horizontal"         android:layout_below="@+id/btnswitch"         android:layout_centerhorizontal="true"         android:layout_margintop="40dp"/>      <imagebutton         android:layout_width="65dp"         android:layout_height="70dp"         android:id="@+id/alarmbutton"         android:src="@drawable/alarmoffline"         android:background="@null"         android:layout_centerhorizontal="true"         android:layout_below="@id/flashblinkbutton"         android:layout_margintop="30dp"/>  </relativelayout> 

edit: automatically goes mdpi folder.

you can try set android:scaletype

for example :

 <imagebutton     android:id="@+id/flashblinkbutton"     android:layout_width="75dp"     android:layout_height="75dp"     android:src="@drawable/blinkoffline"     android:background="@null"     android:layout_gravity="center_horizontal"     android:layout_below="@+id/btnswitch"     android:layout_centerhorizontal="true"     android:layout_margintop="40dp"     android:scaletype="fitxy" /> 

you can see different variations in docs http://developer.android.com/reference/android/widget/imageview.scaletype.html