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Editorial Team
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Asked: 2026-05-28T07:00:51+00:00

I’m trying to start an installed app with dalvikvm in terminal. It doesn’t work

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I’m trying to start an installed app with dalvikvm in terminal. It doesn’t work if I try to do this just so:

dalvikvm -cp /system/app/Calculator.apk com.android.calculator2/.Calculator

Then comes failure message : dalvikvm cannot find a main class

So I tried to run an “am start” in dalvikvm:

dalvikvm -cp system/framework/am.jar com.android.commands.am.Am

It really works. But if I trying then to start an app:

dalvikvm -cp system/framework/am.jar com.android.commands.am.Am start -n com.android.calculator2/.Calculator

it doesn’t work.

Can somebody help me please?

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1 Answer

  1. Editorial Team

    A couple of points:

    1. You cannot run an android application from the terminal. In your
      first command, it would execute a static void main(String[]) method
      in the Calculator class, if there were one. It’s not possible to
      “execute” an application in this manner.

    2. Using am is the correct way to start a specific activity from the terminal. You can simply use the provided “am” script (/system/bin/am). Or at least look at that script to see how to correctly invoke am.

    For example, am start -n com.android.calculator2/.Calculator should do what you want

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