How do I print the contents of an Intent for logging purposes?

Question

Have you written a utility to print all parameters of an intent? Like...

Intent i = ...    
Log.d(tag, "INTENT = " + Util.printIntent(i) );

including target, extras, data, etc ? Thanks for the help.

UPDATE: What I have so far ...

if (G.DEBUG) Log.d(U.getTag(), "INTENT = " + intentToString(intent)  );

public static String intentToString(Intent intent) {
   if (intent == null) {return null;}
   String out = intent.toString();
   Bundle extras = intent.getExtras();
   if (extras != null) {
       extras.size();
       out += "\n" + printBundle(extras);
   }
   if (intent.getAction() != null)     out+="\nAction = " + intent.getAction();
   if (intent.getType() != null)       out+="\nType = " + intent.getType();
   if (intent.getData() != null)       out+="\nData = " + intent.getData();
   if (intent.getPackage() != null)    out+="\nPackage = " + intent.getPackage();
   if (intent.getDataString() != null) out+="\nDataString = " + intent.getDataString();
return out; 
}

Answer 1

The Intent#toString() method works pretty good, it will print most stuff but it doesn't print the extras unfortunately. The extras are in a Bundle that can also be printed with Bundle#toString() but if the Intent just arrived from another process then the contents of the extras Bundle won't be printed until you trigger it to be unparcelled, also it doesn't properly print lists or arrays. This code below should help print out just about everything:

public static String intentToString(Intent intent) {
    if (intent == null) {
        return null;
    }

    return intent.toString() + " " + bundleToString(intent.getExtras());
}

public static String bundleToString(Bundle bundle) {
    StringBuilder out = new StringBuilder("Bundle[");

    if (bundle == null) {
        out.append("null");
    } else {
        boolean first = true;
        for (String key : bundle.keySet()) {
            if (!first) {
                out.append(", ");
            }

            out.append(key).append('=');

            Object value = bundle.get(key);

            if (value instanceof int[]) {
                out.append(Arrays.toString((int[]) value));
            } else if (value instanceof byte[]) {
                out.append(Arrays.toString((byte[]) value));
            } else if (value instanceof boolean[]) {
                out.append(Arrays.toString((boolean[]) value));
            } else if (value instanceof short[]) {
                out.append(Arrays.toString((short[]) value));
            } else if (value instanceof long[]) {
                out.append(Arrays.toString((long[]) value));
            } else if (value instanceof float[]) {
                out.append(Arrays.toString((float[]) value));
            } else if (value instanceof double[]) {
                out.append(Arrays.toString((double[]) value));
            } else if (value instanceof String[]) {
                out.append(Arrays.toString((String[]) value));
            } else if (value instanceof CharSequence[]) {
                out.append(Arrays.toString((CharSequence[]) value));
            } else if (value instanceof Parcelable[]) {
                out.append(Arrays.toString((Parcelable[]) value));
            } else if (value instanceof Bundle) {
                out.append(bundleToString((Bundle) value));
            } else {
                out.append(value);
            }

            first = false;
        }
    }

    out.append("]");
    return out.toString();
}

Answer 2

The simplest one:

 public static String intentToString(Intent intent) {
    if (intent == null)
        return "";

    StringBuilder stringBuilder = new StringBuilder("action: ")
            .append(intent.getAction())
            .append(" data: ")
            .append(intent.getDataString())
            .append(" extras: ")
            ;
    for (String key : intent.getExtras().keySet())
        stringBuilder.append(key).append("=").append(intent.getExtras().get(key)).append(" ");

    return stringBuilder.toString();

}