android.os.PersistableBundle#keySet ( )源码实例Demo

@TargetApi(VERSION_CODES.LOLLIPOP_MR1)
public static Bundle persistableBundleToBundle(PersistableBundle persistableBundle) {
    Set<String> keySet = persistableBundle.keySet();
    Bundle bundle = new Bundle();
    for (String key : keySet) {
        Object value = persistableBundle.get(key);
        if (value instanceof Boolean) {
            bundle.putBoolean(key, (boolean) value);
        } else if (value instanceof Integer) {
            bundle.putInt(key, (int) value);
        } else if (value instanceof String) {
            bundle.putString(key, (String) value);
        } else if (value instanceof String[]) {
            bundle.putStringArray(key, (String[]) value);
        } else if (value instanceof PersistableBundle) {
            Bundle innerBundle = persistableBundleToBundle((PersistableBundle) value);
            bundle.putBundle(key, innerBundle);
        }
    }
    return bundle;
}
 

private PersistableBundle deepCopyBundle(PersistableBundle bundle, int maxDepth) {
    if (maxDepth <= 0) {
        return null;
    }
    PersistableBundle copy = (PersistableBundle) bundle.clone();
    Set<String> keySet = bundle.keySet();
    for (String key: keySet) {
        Object o = copy.get(key);
        if (o instanceof PersistableBundle) {
            PersistableBundle bCopy = deepCopyBundle((PersistableBundle) o, maxDepth-1);
            copy.putPersistableBundle(key, bCopy);
        }
    }
    return copy;
}
 

@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)
public static Bundle getBundle(PersistableBundle arg) {
    Bundle result = new Bundle();
    for (String key : arg.keySet())
        if (arg.get(key) instanceof Boolean)
            result.putBoolean(key, arg.getBoolean(key));
        else if (arg.get(key) instanceof Integer)
            result.putInt(key, arg.getInt(key));
        else if (arg.get(key) instanceof Long)
            result.putLong(key, arg.getLong(key));
        else if (arg.get(key) instanceof String || arg.get(key) == null)
            result.putString(key, arg.getString(key));
    return result;
}
 

/**
 * Logs the type, position and args of spans which attach to given text, but only if log priority
 * is equal to Log.VERBOSE. Format is {type 'spanned text' extra-data} {type 'other text'
 * extra-data} ..."
 *
 * @param text Text to be logged
 */
public static String spansToStringForLogging(CharSequence text) {
  if (!LogUtils.shouldLog(Log.VERBOSE)) {
    return null;
  }

  if (isEmptyOrNotSpannableStringType(text)) {
    return null;
  }

  Spanned spanned = (Spanned) text;
  ParcelableSpan[] spans = spanned.getSpans(0, text.length(), ParcelableSpan.class);
  if (spans.length == 0) {
    return null;
  }

  StringBuilder stringBuilder = new StringBuilder();
  for (ParcelableSpan span : spans) {
    stringBuilder.append("{");
    // Span type.
    stringBuilder.append(span.getClass().getSimpleName());

    // Span text.
    int start = spanned.getSpanStart(span);
    int end = spanned.getSpanEnd(span);
    if (start < 0 || end < 0 || start == end) {
      stringBuilder.append(" invalid index:[");
      stringBuilder.append(start);
      stringBuilder.append(",");
      stringBuilder.append(end);
      stringBuilder.append("]}");
      continue;
    } else {
      stringBuilder.append(" '");
      stringBuilder.append(spanned, start, end);
      stringBuilder.append("'");
    }

    // Extra data.
    if (span instanceof LocaleSpan) {
      LocaleSpan localeSpan = (LocaleSpan) span;
      if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
        Locale locale = localeSpan.getLocale();
        if (locale != null) {
          stringBuilder.append(" locale=");
          stringBuilder.append(locale);
        }
      } else {
        LocaleList localeList = localeSpan.getLocales();
        int size = localeList.size();
        if (size > 0) {
          stringBuilder.append(" locale=[");
          for (int i = 0; i < size - 1; i++) {
            stringBuilder.append(localeList.get(i));
            stringBuilder.append(",");
          }
          stringBuilder.append(localeList.get(size - 1));
          stringBuilder.append("]");
        }
      }

    } else if (span instanceof TtsSpan) {
      TtsSpan ttsSpan = (TtsSpan) span;
      stringBuilder.append(" ttsType=");
      stringBuilder.append(ttsSpan.getType());
      PersistableBundle bundle = ttsSpan.getArgs();
      Set<String> keys = bundle.keySet();
      if (!keys.isEmpty()) {
        for (String key : keys) {
          stringBuilder.append(" ");
          stringBuilder.append(key);
          stringBuilder.append("=");
          stringBuilder.append(bundle.get(key));
        }
      }
    } else if (span instanceof URLSpan) {
      URLSpan urlSpan = (URLSpan) span;
      stringBuilder.append(" url=");
      stringBuilder.append(urlSpan.getURL());
    }
    stringBuilder.append("}");
  }
  return stringBuilder.toString();
}