Android Technology 17:android binary command in application

Android system is the Liunx kernel, the kernel has a large number of executable binaries, System/bin directory below, such as

We all know that you can execute the above commands in the Linux command window, but how do you invoke the command in an Android application?

1. Get the current runtime

Runtime.getruntime ();

2. Execution of commands

For example, perform PS view process information

Process precess=runtime.getruntime (). EXEC ("PS");

3. Get content

InputStream Is=precess.getinputstream ();
BufferedReader br=new BufferedReader (New InputStreamReader (IS));
String s= "";
StringBuffer sb=new StringBuffer ();
while ((S=br.readline ())!=null) {
Sb.append (s+ "\ n");
}
System.out.println (Sb.tostring ());

4. Display results