[Android-development] Build an Android Launcher in Qt ...

David Marceau uticdmarceau2007 at yahoo.ca
Sat Mar 1 00:18:08 CET 2014


Ok, firstly you need to know how to launch other applications in android:
http://stackoverflow.com/questions/3872063/android-launch-an-application-from-another-application

Now you have to take the recipe you find most fitting and translate it
into a cpp function call.  the QAndroidJniObject is definitely the right
class to use for you to get there.
http://qt-project.org/doc/qt-5/qandroidjniobject.html#QAndroidJniObject

Your app1 is the one that will have to create a jnienvironment:
QAndroidJniEnvironment env;

//The Java code looks like this:
//you do know the android mainactivity entry point
//packagename >>>"com.my.app.name_two"
//MainActivity name >>> "org.qtproject.qt5.android.bindings.QtActivity"
//Intent intent = new Intent(Intent.ACTION_MAIN);
//intent.setComponent(new
//ComponentName("com.my.app.name_two","org.qtproject.qt5.android.bindings.QtActivity"));
//startActivity(intent);

I extracted that information from your app2 AndroidManifest.xml

Cheers,
David Marceau
http://adequatech.ca


On 02/28/2014 05:34 PM, Éric Seigne wrote:
> 
> Hello,
> here is my "proof of concept" ...
> 
> if you could extract, build and explain to me what i'm doing wrong ?
You can't use the standard c++ exec() within the Android Runtime
Environment because it is not a running the Posix Standard Runtime in
Android.  It is running other runtime environment depending on your
Android version. Dalvik or Art or whatever else as mentioned in the
previous email.

You have to rely on the QAndroidJniObject to get you there.  You
translate every line of java above into something from QAndroidJniObject
calls can understand.


> 
> thanks,
> Éric
> 
> Le 28/02/2014 23:16, Éric Seigne a écrit :
>> Hello David,
>> thanks a lot for helping me, but i'm a Qt/c++ only developper, there is
>> 0 java code lines in app1 or app2 :o)
>>
>> in other os i just make a qprocess to launch app2 from app1
>>
>> Éric
> 
> 
> 
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