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Android初学者：onDestroy

Android 发布时间：2022-04-28 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了Android初学者：onDestroy，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

在覆盖活动的ondestroy时,我应该在super.onDestroy()之前或之后放置命令吗？

protected void onDestroy() {

    //option 1: callBACk before or ...

    super.onDestroy();

    //option 2: callBACk after super.onDestroy();
}

(现在我担心：如果super.onDestroy太快,它将永远不会到达选项2.)

解决方法

当你调用super.onDestroy()时会发生这种情况.

Android Source

protected void onDestroy() {
    mCalled = true;

    // dismiss any dialogs we are managing.
    if (mManagedDialogs != null) {

        final int numDialogs = mManagedDialogs.size();
        for (int i = 0; i < numDialogs; i++) {
            final Dialog dialog = mManagedDialogs.valueAt(i);
            if (dialog.isShowing()) {
                dialog.dismiss();
            }
        }
    }

    // also dismiss search dialog if showing
    // TODO more generic than just this manager
    SearchManager searchManager = 
        (SearchManager) getSystemservice(Context.SEARCH_serviCE);
    searchManager.stopSearch();

    // close any cursors we are managing.
    int numcursors = mManagedcursors.size();
    for (int i = 0; i < numcursors; i++) {
        Managedcursor c = mManagedcursors.get(i);
        if (c != null) {
            c.mcursor.close();
        }
    }
}