[Q] Executing Shell Script on Preference Change/Click

I could really use a hand here, maybe with the right help, this can turn into a nice How To thread...

Here's the situation...
NOTE: I am on a Note 3 with Touchwiz Rom

I'd like to add a customization to my Settings.apk (this part's not the problem), and have it fire off a bash script on selection (whether it's a simple tap-the-setting, checkbox, list item, etc...)

Here is what I have thus far for my smali

Code:

---

.class public Lcom/android/settings/ExecSH;
.super Lcom/android/settings/SettingsPreferenceFragment;
.source "ExecSH.java"

.implements Landroid/preference/Preference$OnPreferenceChangeListener;
.implements Landroid/preference/Preference$OnPreferenceClickListener;


# direct methods
.method public onPreferenceTreeClick(Landroid/preference/PreferenceScreen;Landroid/preference/Preference;)Z

    :try_start_0
    const-string v2, Landroid/preference/Preference;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference; # String of command to fire off

    invoke-static {v2}, Lcom/android/settings/ExecSH;->execRootCmdSilent(Ljava/lang/String;)I
    :try_end_0
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_0} :catch_0

.end method

.method public static execRootCmdSilent(Ljava/lang/String;)I
    .locals 6
    .parameter "paramString"

    .prologue
    .line 40
    :try_start_0
    const-string v4, "RootCmd"

    invoke-static {v4, p0}, Landroid/util/Log;->i(Ljava/lang/String;Ljava/lang/String;)I

    .line 41
    invoke-static {}, Ljava/lang/Runtime;->getRuntime()Ljava/lang/Runtime;

    move-result-object v4

    const-string v5, "su"

    invoke-virtual {v4, v5}, Ljava/lang/Runtime;->exec(Ljava/lang/String;)Ljava/lang/Process;

    move-result-object v2

    .line 42
    .local v2, localProcess:Ljava/lang/Process;
    new-instance v0, Ljava/io/DataOutputStream;

    invoke-virtual {v2}, Ljava/lang/Process;->getOutputStream()Ljava/io/OutputStream;

    move-result-object v4

    invoke-direct {v0, v4}, Ljava/io/DataOutputStream;-><init>(Ljava/io/OutputStream;)V

    .line 44
    .local v0, localDataOutputStream:Ljava/io/DataOutputStream;
    new-instance v4, Ljava/lang/StringBuilder;

    invoke-direct {v4}, Ljava/lang/StringBuilder;-><init>()V

    invoke-virtual {v4, p0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v4

    const-string v5, "\n"

    invoke-virtual {v4, v5}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v4

    invoke-virtual {v4}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v3

    .line 45
    .local v3, str:Ljava/lang/String;
    invoke-virtual {v0, v3}, Ljava/io/DataOutputStream;->writeBytes(Ljava/lang/String;)V

    .line 46
    invoke-virtual {v0}, Ljava/io/DataOutputStream;->flush()V

    .line 47
    const-string v4, "exit\n"

    invoke-virtual {v0, v4}, Ljava/io/DataOutputStream;->writeBytes(Ljava/lang/String;)V

    .line 48
    invoke-virtual {v0}, Ljava/io/DataOutputStream;->flush()V

    .line 49
    invoke-virtual {v2}, Ljava/lang/Process;->waitFor()I

    .line 50
    invoke-virtual {v2}, Ljava/lang/Process;->exitValue()I
    :try_end_0
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_0} :catch_0

    move-result v4

    .line 55
    .end local v0          #localDataOutputStream:Ljava/io/DataOutputStream;
    .end local v2          #localProcess:Ljava/lang/Process;
    .end local v3          #str:Ljava/lang/String;
    :goto_0
    return v4

    .line 52
    :catch_0
    move-exception v1

    .line 53
    .local v1, localException:Ljava/lang/Exception;
    invoke-virtual {v1}, Ljava/lang/Exception;->printStackTrace()V

    .line 55
    const/4 v4, 0x1

    goto :goto_0
.end method

---

Will this do what I think it'll do? (I think it's grab the preference key and fire it off as a root command...