小编QY *_*Lin的帖子

我可以Runtime.exec()用来执行像" getprop"和" ls system" 这样的shell命令,它们工作正常.

但是,当我使用" echo $BOOTCLASSPATH"," echo \\$BOOTCLASSPATH"或" echo HelloWorld"时,它不会在stdout中显示它.

logcat显示:

I/AndroidRuntime( 4453): VM exiting with result code -1.

这是我的代码:

try {
    java.lang.Process proc = Runtime.getRuntime().exec("echo -e \\$BOOTCLASSPATH");
    String line = null;

    InputStream stderr = proc.getErrorStream();
    InputStreamReader esr = new InputStreamReader (stderr);
    BufferedReader ebr = new BufferedReader (esr);
    while ( (line = ebr.readLine()) != null )
        Log.e("FXN-BOOTCLASSPATH", line);

    InputStream stdout = proc.getInputStream();
    InputStreamReader osr = new InputStreamReader (stdout);
    BufferedReader obr = …