Know if your app is running on a phone or tablet

Monkey Targets Forums/Android/Know if your app is running on a phone or tablet

Supertino

(Posted 2012) [#1]

Is there a way of knowing if you app is running on a Tablet or phone?

There are a lot of cheap 7" tablets out there that run at 800x480 same as my 3.7" phone and some expensive 4-5" phones that run at 1280x768 same as my 7" nexus 7.

Would be nice to know the screen dimensions or DPI so I can scale text etc appropriately.

Xaron

(Posted 2012) [#2]

http://developer.android.com/guide/practices/screens_support.html#testing

http://developer.android.com/about/dashboards/index.html

Ironstorm

(Posted 2012) [#3]

I'm using this little function to detect if my app is running on a tablet or phone.

import android.content.res.Configuration;

public static boolean isTablet() {
	
	boolean xlarge = ((MonkeyGame.activity.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_XLARGE) == Configuration.SCREENLAYOUT_SIZE_MASK);
	
	if (xlarge) {
		DisplayMetrics metrics = new DisplayMetrics();
		MonkeyGame.activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
		
		if (metrics.densityDpi == DisplayMetrics.DENSITY_DEFAULT
	                  || metrics.densityDpi == DisplayMetrics.DENSITY_HIGH
	                  || metrics.densityDpi == DisplayMetrics.DENSITY_MEDIUM   
	                  || metrics.densityDpi == DisplayMetrics.DENSITY_XHIGH) {
	
		
			return true;
		}
	}
	
	return false;
}

Worked for me on my HTC OneX (1280px x 800px), Acer Iconia Tab A501 (1280px x 800px) and HTC Desire S (800px x 480px)

therevills

(Posted 2012) [#4]

What happens when Mobile screens have the same resolution/DPI as Tablets? ;)

This is from Google's own code:

    public static boolean isTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
                & Configuration.SCREENLAYOUT_SIZE_MASK)
                >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }

http://code.google.com/p/iosched/source/browse/android/src/com/google/android/apps/iosched/util/UIUtils.java

Really you are after is the current device has a large screen, not if its a tablet or not.

[Edit - Just found this:

https://groups.google.com/forum/?fromgroups=#!topic/android-developers/1jI9gfIm-T8

DisplayMetrics metrics = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(metrics);

double inches = Math.sqrt((metrics.widthPixels * metrics.widthPixels) + (metrics.heightPixels * metrics.heightPixels)) / metrics.densityDpi;

if (inches > TABLET_SIZE) {
   this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}

This code outputs the inches as:
Galaxy Nexus = 4.3
Droid = 4.08
Nexus 7 = 6.9
Samsug 10.1 = 9.2

Supertino

(Posted 2012) [#5]

Thanks all, yes it looks like I need to return the actual size of the device screen in Inches regardless of resolution. I assume that last code junk is easy enough to plug into Monkey.

therevills

(Posted 2012) [#6]

I assume that last code junk is easy enough to plug into Monkey.

Yeah, it should be something like this (not tested):

Monkey code:

Import "android.java"

Extern
	Function GetDeviceSize:Float() = "extern.getDeviceSize"

Public

android.java

class extern
{
	static float getDeviceSize()
	{
		DisplayMetrics metrics = new DisplayMetrics();

		getWindowManager().getDefaultDisplay().getMetrics(metrics);

		double inches = Math.sqrt((metrics.widthPixels * metrics.widthPixels) + (metrics.heightPixels * metrics.heightPixels)) / metrics.densityDpi;
		return  (float)inches;
	}
}

Supertino

(Posted 2012) [#7]

Thanks rev I'll give it a bash when I am back home on Friday.

Midimaster

(Posted 2013) [#8]

did anybody ever use or try these codes above?

I try to start them, but I get massive error messages:

class Display {
	static int GetDpi() {
		DisplayMetrics metrics = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(metrics);
		int dpi= metrics.densityDpi;
		return  dpi;
	}
}

Strict
Import mojo
Import "SystemInfo.java"


Extern
	#If TARGET="android"
		Function GetExtDpi:Int() = "Display.GetDpi"
	#Endif
Public

-compile:
    [javac] Compiling 3 source files to C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\bin\classes
    [javac] C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java:730: error: incompatible types
    [javac] 		_display=_activity.getWindowManager().getDefaultDisplay();
    [javac] 		                                                       ^
    [javac]   required: com.monkey.Display
    [javac]   found:    android.view.Display
    [javac] C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java:1267: error: cannot find symbol
    [javac] 			switch( _display.getOrientation() ){	//deprecated in API 8, but we support 3...
    [javac] 			                ^
    [javac]   symbol:   method getOrientation()
    [javac]   location: variable _display of type Display
    [javac] C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java:1267: 
error: strings in switch are not supported in -source 1.5
    [javac] 			switch( _display.getOrientation() ){	//deprecated in API 8, but we support 3...
    [javac] 			                               ^
    [javac]   (use -source 7 or higher to enable strings in switch)
    [javac] C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java:2501: error: cannot find symbol
    [javac] 		getWindowManager().getDefaultDisplay().getMetrics(metrics);
    [javac] 		^
    [javac]   symbol:   method getWindowManager()
    [javac]   location: class Display
    [javac] Note: C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java uses or overrides a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: C:\Monkey\ScoreTrainerV54 MonkeyV69\TestScreenMetrics.build\android\src\com\monkey\MonkeyGame.java uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 4 errors

BUILD FAILED
C:\Programme\Android\android-sdk\tools\ant\build.xml:710: The following error occurred while executing this line:
C:\Programme\Android\android-sdk\tools\ant\build.xml:723: Compile failed; see the compiler error output for details.

At the end I found this:

http://stackoverflow.com/questions/10955287/using-getwindowmanager-inside-broadcastreceiver

Midimaster

(Posted 2013) [#9]

A lot of confusion in this thread, but I found a solution to communicate to the DisplayMetric() class.

I tested this on V69 and Android 2.3 and the sample below works:

save this as "testdpi.java"

class SystemPeter {

	public static int GetAndroid_Dpi() {
		DisplayMetrics metrics = new DisplayMetrics();
		BBAndroidGame._androidGame._activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
		int dpi= metrics.densityDpi;
		//int dpi= metrics.heightPixels;
		return dpi;
	}
}

The sample app:

Strict
Import mojo
Import "testdpi.java"


Extern
	
	#If TARGET="android"
		Function GetAndroidDpi:Int()="SystemPeter.GetAndroid_Dpi"
	#Endif

Public

Class Game Extends App

	Field Timer%
	Method OnCreate%()
		SetUpdateRate 15
		Return 0
	End	

	Method OnUpdate%()
		If KeyHit(KEY_ESCAPE) Then Error ""
		Return 0
	End	

	Method OnRender%()
		Local a%
		Cls 0,0,0
		#If TARGET="android"
			a = GetAndroidDpi()
		#Endif
		DrawText a,50,200
		Return 0
	End	
	
End

Function Main%()
	New Game
	Return 0
End

some more information here: http://www.monkeycoder.co.nz/Community/posts.php?topic=4958