A better way to get a system property.

AndroidGetSystemProp.java

public static String getSystemProp(String key) throws Exception {
	Class<?> c = Class.forName("android.os.SystemProperties");
	Class<?>[] types = new Class[] {String.class};
	Method method = c.getMethod("get", types);
	return (String) method.invoke(null, new Object[] {key});
}

Reflection was used because Runtime.getRuntime().exec("getprop " + key) some times causes lock. Also, framework's SystemProperties class is not published in SDK.