The desktop icon is for the simple java app (JNIDemo.apk). I guess what I need is a way of calling a Java method from a native library without having to do a load library from the Java app. Is that possible?
If I load the library from JNIdemo, then there will be 2 contexts of the library, one from JNIDemo and the other from where I actually need to launch DragonHunter, so that wont work for my requirement On Tuesday, July 17, 2012 11:55:01 PM UTC-7, Dianne Hackborn wrote: > > What is "DesktopIcon"? I don't understand what you are describing. > > On Tue, Jul 17, 2012 at 2:46 PM, HV <[email protected]> wrote: > >> Ok, I got this working. A simple JAVA app (say JNIDemo) that calls a >> native method (in say NativeLib.so), which in turn calls back a JNIDemo >> method. All of this is working seamlessly. Now, the next problem I have is >> context related. I have a desktop icon which is supposed to launch an >> Android app (such as DragonHunter) and that is failing: >> >> 1. JNIDemo -> NativeLib -> JNIDemo (works fine) >> 2. DesktopIcon -> NativeLib -> JNIDemo (fails to launch an app such as >> DragonHunter) >> >> Now, since 1 & 2 are running in separate processes, the JNI variables are >> no longer valid in #2. Any ideas? >> >> On Saturday, July 7, 2012 11:40:05 PM UTC-7, HV wrote: >>> >>> Thanks Dianne, that's what I thought, hence this question. Glad to know >>> that using 'am' is not the way to go. Could you please provide a link to >>> the SDK where it talks about this? If there is an example, that'll be >>> awesome >>> >>> Thanks again >>> HV >>> >>> On Saturday, July 7, 2012 5:13:07 PM UTC-7, Dianne Hackborn wrote: >>>> >>>> No don't do that, the am command is not part of the SDK, and doing it >>>> this way is horrible inefficient (you need to spin up and initialize a >>>> fresh Dalvik vm for the am command, which takes a second or more), and >>>> usually totally broken because you are not launching the activity from >>>> your >>>> own context for the system to correctly associate the call with you. >>>> >>>> And on top of that, your example here uses an explicit component name >>>> of the browser activity, which is *completely* an implementation detail: >>>> it >>>> is likely to be different across different devices, it is *definitely* >>>> different on devices that ship with Chrome as the default browser, etc. >>>> >>>> This is totally wrong. >>>> >>>> The right thing to do is follow the SDK and do it the right way, the >>>> way it is documented. If you need to write a little bit of JNI code (and >>>> it *is* a little bit, just a method call into your own Java method that >>>> uses the SDK), then that is what you do. >>>> >>>> On Fri, Jul 6, 2012 at 11:58 PM, Sandeep Kumar < >>>> [email protected]> wrote: >>>> >>>>> try below:- >>>>> >>>>> ret = execl("/system/bin/sh", "sh", "-c", "am start -a >>>>> android.intent.action.MAIN -n com.android.browser/.**BrowserActivity", >>>>> (char *)NULL); >>>>> >>>>> >>>>> >>>>> On Saturday, July 7, 2012 3:51:58 AM UTC+9, HV wrote: >>>>>> >>>>>> Wanted to know what is the best practice to launch apps from native >>>>>> code? Is using 'am' forbidden? It has to be via the system call though, >>>>>> like system("am start ..."); Will 'am' support be discontinued going >>>>>> forward? >>>>>> >>>>>> Is there any alternative method? >>>>>> >>>>>> Thanks much >>>>>> HV >>>>>> >>>>> -- >>>>> unsubscribe: >>>>> android-porting+unsubscribe@**googlegroups.com<android-porting%[email protected]> >>>>> website: >>>>> http://groups.google.com/**group/android-porting<http://groups.google.com/group/android-porting> >>>>> >>>> >>>> >>>> >>>> -- >>>> Dianne Hackborn >>>> Android framework engineer >>>> [email protected] >>>> >>>> Note: please don't send private questions to me, as I don't have time >>>> to provide private support, and so won't reply to such e-mails. All such >>>> questions should be posted on public forums, where I and others can see >>>> and >>>> answer them. >>>> >>>> -- >> unsubscribe: [email protected] >> website: http://groups.google.com/group/android-porting >> > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
