How to launch the third-party android applications I installed through Intent directly?

we can launch android market application from:

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setData("market://detai开发者_开发知识库ls?id=packgename");

startActivity(intent);

My question is how to launch the third-party android applications I installed through Intent directly? Do you guys have any ideas?

In order to do that, you need to find the following info for the application you want to start:

• Package
• Startup Class

You can obtain this info if you start third-party app regularly, and in the LogCat inspect the trace.

Then, you just fill in following intent with the info you obtained:

    Intent startupIntent = new Intent();
    ComponentName distantActivity = new ComponentName("com.third.exampleapp", "com.third.exampleapp.StartupClass");
    startupIntent.setComponent(distantActivity);
    startupIntent.setAction(Intent.ACTION_MAIN);
    startActivity(startupIntent);    

Please note that it is very bad practice to start standard Android system Intents this way.