如何将Bundle转换为PersistableBundle？ [英] How can I convert a Bundle to a PersistableBundle?

问题描述

API21发布了 PersistableBundle ，这是系统出于各种目的保留的捆绑包（ JobScheduler 工作， ShortcutInfo s 等）。我想用一种简单的方法将旧代码中的 Bundle 转换为 PersistableBundle 的...我该怎么办？

API21 released the PersistableBundle which is a bundle that the system retains for various purposes (JobScheduler jobs, ShortcutInfos etc). I'd like an easy way to convert the Bundle's that are present in my old code to PersistableBundle's...how can I do it?

推荐答案

从API26开始，没有方法可以轻松地做到这一点，手动验证值是否兼容：

As of API26, there is no way exposed to easily do this, you have to manually verify that the values are compatible:

private boolean bundleCanBePersisted(final Bundle extras) {
    if (extras == null) {
        return true;
    }

    Set<String> keys = extras.keySet();
    Iterator<String> it = keys.iterator();
    boolean allExtrasPersistable = true;
    while (it.hasNext()) {
        String key = it.next();
        boolean isPersistable = isPersistable(extras.get(key));

        if (!isPersistable) {
            LOGGER.warning("Non persistable value in bundle. " + bundleItemToString(key, extras));
        }

        allExtrasPersistable &= isPersistable;
    }
    return allExtrasPersistable;
}

/**
 * These are all the values that can be put into a PersistableBundle.
 */
private boolean isPersistable(final Object o) {
    return o == null
            || o instanceof PersistableBundle
            || o instanceof String
            || o instanceof String[]
            || o instanceof Boolean
            || o instanceof Boolean[]
            || o instanceof Double
            || o instanceof Double[]
            || o instanceof Integer
            || o instanceof Integer[]
            || o instanceof Long
            || o instanceof Long[];
}

private String bundleItemToString(final String key, final Bundle bundle) {
    Object value = bundle.get(key);
    Class<?> valueClazz = null;
    if (value != null) {
        valueClazz = value.getClass();
    }
    return String.format("[%s = %s (%s)]", key, value, valueClazz);
}

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