How to call Android calculator on my app for all phones

Question

  public static final String CALCULATOR_PACKAGE ="com.android.calculator2";
  public static final String CALCULATOR_CLASS ="com.android.calculator2.Calculator";
  Intent intent = new Intent();

    intent.setAction(Intent.ACTION_MAIN);
         intent.addCategory(Intent.CATEGORY_LAUNCHER);
        intent.setComponent(new ComponentName(
         CALCULATOR_PACKAGE,
         CALCULATOR_CLASS));

the above works for HTC only

  public static final String CALCULATOR_PACKAGE ="com.sec.android.app.popupcalculator";
  public static final String CALCULATOR_CLASS ="com.sec.android.app.popupcalculator.Calculator";

the above works for S3

I need a code that works for all of them. Someone with any clue ?Please give an example code

try this example http://myandroidsolutions.blogspot.in/2012/06/android-open-calculator-from-android.html — kumar_android, Dec 01 '12 at 18:46
@kumaand that only works for HTC but not S3. I have independent codes for both HTC and S3 and both are working. I need one that will work for all of them. — Simon Macha Mwas, Dec 01 '12 at 18:52
best way is use PackageManager to get the internal application package name and find `calculator` in all Strings if found then extract main class name or package for starting it.from this way you will support all device or tablets for launching default calculator — ρяσѕρєя K, Dec 01 '12 at 18:57
@imran Khan I had the same idea but the implementation is an issue. Please help me with an example. It will give me a head start. Thank you — Simon Macha Mwas, Dec 01 '12 at 19:04
@SimonMachaMwas : just wait i will give u some basic code to implement it — ρяσѕρєя K, Dec 01 '12 at 19:11

score 39 · Accepted Answer · edited Nov 24 '16 at 16:23

39

you can try as to Default calculator on all android devices:

ArrayList<HashMap<String,Object>> items =new ArrayList<HashMap<String,Object>>();

final PackageManager pm = getPackageManager();
List<PackageInfo> packs = pm.getInstalledPackages(0);  
for (PackageInfo pi : packs) {
if( pi.packageName.toString().toLowerCase().contains("calcul")){
    HashMap<String, Object> map = new HashMap<String, Object>();
    map.put("appName", pi.applicationInfo.loadLabel(pm));
    map.put("packageName", pi.packageName);
    items.add(map);
 }
}

and now you can launch calculator application as:

if(items.size()>=1){
String packageName = (String) items.get(0).get("packageName");
Intent i = pm.getLaunchIntentForPackage(packageName);
if (i != null)
  startActivity(i);
} 
else{
      // Application not found
   }

And for Api >= 15 ,You can use

Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_APP_CALCULATOR);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

edited Nov 24 '16 at 16:23

Zar E Ahmer

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answered Dec 01 '12 at 19:28

ρяσѕρєя K

132,198
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i'm sure this code will work on all devices for launching calculator application – ρяσѕρєя K Dec 01 '12 at 19:29
let me try it will tell u in a min – Simon Macha Mwas Dec 01 '12 at 19:47
Thank you big !! it worked man Thanks alot it is working for all phones – Simon Macha Mwas Dec 01 '12 at 19:53
1

I have tested on both HTC ONE X and Sam Sung S3 devices. You really saved me alot !! :) – Simon Macha Mwas Dec 01 '12 at 19:59
On my device, launched the "Solution Calculator" chemistry application. – Noumenon Jul 25 '13 at 15:16
I just added a foreach loop after your check on `items.size()` to check if the appName `startsWith("calc")`. If so, I set the package name equal to that element of `items` instead of `items.get(0)`. – Noumenon Jul 25 '13 at 15:57

score 4 · Answer 2 · answered Oct 12 '15 at 22:11

4

Intent i = new Intent();
i.setAction(Intent.ACTION_MAIN);
i.addCategory(Intent.CATEGORY_APP_CALCULATOR);
startActivity(i);

answered Oct 12 '15 at 22:11

Igor

51
3

score 1 · Answer 3 · answered Dec 01 '12 at 18:58

1

You'll have to check if the default calculator package name(com.android.calculator2) is available with this:

try{
     ApplicationInfo info = getPackageManager()
                             .getApplicationInfo("com.android.calculator2", 0 );

    } catch( PackageManager.NameNotFoundException e ){
     //application doesn't exist
}

Samsung uses a lot of apps preinstalled with TouchWiz which aren't available in stock Android. Therefore if you get an Exception in the above you can check if Samsung's calculator is available. Btw I think com.android.calculator2 is not HTC specific.

answered Dec 01 '12 at 18:58

Ahmad

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@Ahmed everything is ok with HTC One X now how do i get both HTC and S3 working. am not getting any exception. Do you have any idea of how to go about it. How do i get the package and the class of the calculator – Simon Macha Mwas Dec 01 '12 at 19:32
Samsung's calculator on my phone is com.sec.android.app.popupcalculator . – Noumenon Jul 25 '13 at 15:32

score 0 · Answer 4 · answered Oct 10 '17 at 11:29

Well this is a Modified Answer of @ρяσѕρєя K becouse it works fine in samsung mobiles and only packages have "calc" but not all mobiles like HTC AND LENOVO ETC

And for Api >= 15 ,You can use BUT !!!

    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_APP_CALCULATOR);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);

THIS MAY CAN CAUSE ERROR LIKE THIS

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.MAIN cat=[android.intent.category.APP_CALCULATOR] flg=0x10000000 }

SO LETS TAKE A LOOK AT THIS

LOAD all apps to Array

    // Declare universal if you want Access any where from scope


ArrayList<HashMap<String,Object>> items;
    PackageManager pm ;    
List<PackageInfo> packs;

    // initialise From Oncreate if you want
    items =new  ArrayList<HashMap<String,Object>>(); 
    pm = getPackageManager();
    packs = pm.getInstalledPackages(0);  
        for (PackageInfo pi : packs)
 {
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("appName", pi.applicationInfo.loadLabel(pm));
            map.put("packageName", pi.packageName);
            items.add(map); 
 }

THIS IS TRICK PART We are Traversing through all Apps to get App Named or Matches "Calculator"

public void opencalculator(){
  int d=0;
  if(items.size()>=1){
  int j=0;
 for(j=0;j<items.size();j++){
 String AppName = (String) items.get(j).get("appName");
// Log.w("Name",""+AppName);
    if(AppName.matches("Calculator"))
                     {
                            d=j;
                            break;
                     }
                    }
                    String packageName = (String) items.get(d).get("packageName");

                    Intent i = pm.getLaunchIntentForPackage(packageName);
                    if (i != null){
                        Toast.makeText(getContext(),"STARTING",Toast.LENGTH_SHORT).show();

                        startActivity(i);}
                    else {
                        Toast.makeText(getContext(),"SORRY I CANT OPEN CALCULATOR :(",Toast.LENGTH_SHORT).show();

                    }
                }


                else{
                    Toast.makeText(getContext(),"SORRY I CANT START CALCULATOR :(",Toast.LENGTH_SHORT).show();


                }
}

CALL OPENCALCULATOR

opencalculator();

How to call Android calculator on my app for all phones

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