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process - Execute ADB command from Java program

The program I'm working on uses ADB (Android Debug Bridge) to send files to my phone:

for (String s : files)
    String cmd = "adb -s 0123456789ABCDEF push " + s + " /mnt/sdcard/" + s;
    try {
        InputStream is = Runtime.getRuntime().exec(cmd).getInputStream();
        while (is.read() != -1) {}
    } catch (IOException e) {
        e.printStackTrace();
    }

I want the program to wait until ADB finished the transmission, but ADB runs as a daemon and therefore never finishes. But the program continues immideately and somehow the files aren't sent to my phone (no exceptions in log). When I run the command from console, it's working without problems.

What am I doing wrong? How do I send files via ADB correctly?

NOTE: the is.read() == -1 won't work, because the ADB daemon writes all output to the system standard output. I've tried forwarding it into a textfile. It stayed empty and the output was still written to the terminal instead

EDIT: Reading the ErrorStream of the ADB process returned the adb help for each adb push-command. Again: The exact commands (copied from Eclipse console) work in a terminal

EDIT 2: Using a ProcessBuilder instead of RUntime.getRuntime.exec() resulted in the following error:

java.io.IOException: Cannot run program "adb -s 0123456789ABCDEF push "inputfile "outputfile""": error=2, File or directory not found

at the ProcessBuilder's start()-method The same happens when using an absolute path for ADB (/usr/bin/adb). The inputfile and outputfile Strings are also absolute paths, like /home/sebastian/testfile and definitely exist. When running the commands from terminal (string "cmd" printed, copy&paste), evreything still works fine.

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1 Answer

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I finally got it working:

ProcessBuilder pb = new ProcessBuilder("adb", "-s", "0123456789ABCDEF", "push", inputfile, outputfile);
Process pc = pb.start();
pc.waitFor();
System.out.println("Done");

I don't know what problems ProcessBuilder has with spaces in a string, but finally, it's working...


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