如何查看手机的cpu类型是x86还是arm

String arch = "";//cpu类型
try {
Class<?> clazz = Class.forName("android.os.SystemProperties");
Method get = clazz.getDeclaredMethod("get", new Class[] {String.class});
arch = (String)get.invoke(clazz, new Object[] {"ro.product.cpu.abi"});
} catch(Exception e) {
e.printStackTrace();
}

Log.d(TAG, "arch "+arch);