活动如何使用工具栏不延长AppCompatActivity [英] How can an activity use a Toolbar without extending AppCompatActivity

问题描述

我有一个活动 HomeView 这已经扩展了另一个活动，并不能延长 AppCompatActivity 。但HomeView需要有一个工具栏。 Android的文件说，这需要有一个工具栏的任何活动都必须扩展 AppCompatActivity 。

I have an activity HomeView which already extends another activity and it cannot extend AppCompatActivity. But HomeView needs to have a Toolbar. The Android documentation says that any activity which needs to have a Toolbar must extend AppCompatActivity.

如何才能绕过这个限制？

How can I get around this limitation?

推荐答案

您需要执行 AppCompatCallback ，并使用 AppCompatDelegate 。下面是关于如何使用它的优秀文章：<一href=\"https://medium.com/google-developer-experts/how-to-add-toolbar-to-an-activity-which-doesn-t-extend-appcompatactivity-a07c026717b3#.nuyghrgr9\" rel=\"nofollow\">https://medium.com/google-developer-experts/how-to-add-toolbar-to-an-activity-which-doesn-t-extend-appcompatactivity-a07c026717b3#.nuyghrgr9并检查出的https://developer.android.com/reference/android/support/v7/app/AppCompatDelegate.html为了解委托哪些方法。

You need to implement AppCompatCallback and use AppCompatDelegate. Here's an excellent article about how to use it: https://medium.com/google-developer-experts/how-to-add-toolbar-to-an-activity-which-doesn-t-extend-appcompatactivity-a07c026717b3#.nuyghrgr9 and also check out https://developer.android.com/reference/android/support/v7/app/AppCompatDelegate.html for knowing which methods to delegate.

本类重presents一个委托，您可以使用应用程序兼容性的支持扩展到任何活动。

This class represents a delegate which you can use to extend AppCompat's support to any Activity.

当使用AppCompatDelegate，你应该任何方法暴露了它，而不是相同名称的活动方式。适用于：

When using an AppCompatDelegate, you should any methods exposed in it rather than the Activity method of the same name. This applies to:

addContentView(android.view.View, android.view.ViewGroup.LayoutParams)
setContentView(int)
setContentView(android.view.View)
setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
requestWindowFeature(int)
invalidateOptionsMenu()
startSupportActionMode(android.support.v7.view.ActionMode.Callback)
setSupportActionBar(android.support.v7.widget.Toolbar)
getSupportActionBar()
getMenuInflater()

有也有一些活动的生命周期方法应该被代理到代理：

There also some Activity lifecycle methods which should be proxied to the delegate:

onCreate(android.os.Bundle)
onPostCreate(android.os.Bundle)
onConfigurationChanged(android.content.res.Configuration)
setTitle(CharSequence)
onStop()
onDestroy()

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