onNewIntent

最新推荐文章于 2025-08-23 10:36:55 发布

fyfcauc

最新推荐文章于 2025-08-23 10:36:55 发布

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分类专栏： Android 文章标签： android

本文链接：https://blog.youkuaiyun.com/fyfcauc/article/details/41408013

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本文探讨了在Android应用中使用'singleTop'模式重新启动活动时的机制，包括如何在现有实例上重新加载Intent，以及在重新启动前调用的生命周期方法。重点介绍了在重新启动时如何通过`onNewIntent()`方法接收新的Intent，并更新到当前实例，确保应用状态的一致性和用户体验的连续性。

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/**
     * This is called for activities that set launchMode to "singleTop" in
     * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP}
     * flag when calling {@link #startActivity}. In either case, when the
     * activity is re-launched while at the top of the activity stack instead
     * of a new instance of the activity being started, onNewIntent() will be
     * called on the existing instance with the Intent that was used to
     * re-launch it.
     *
     * <p>An activity will always be paused before receiving a new intent, so
     * you can count on {@link #onResume} being called after this method.
     *
     * <p>Note that {@link #getIntent} still returns the original Intent. You
     * can use {@link #setIntent} to update it to this new Intent.
     *
     * @param intent The new intent that was started for the activity.
     *
     * @see #getIntent
     * @see #setIntent
     * @see #onResume
     */
    protected void onNewIntent(Intent intent) {
    }