由网友(你是我一生的赌注)分享简介：我在我的应用程序，我一直保持为I have an activity in in my app which I have kept as android:enabled="false"现在我想要一个按钮被点击时，它应该换到now I want that when a button is clicked it sho...

我在我的应用程序，我一直保持为

I have an activity in in my app which I have kept as

android:enabled="false"

现在我想要一个按钮被点击时，它应该换到

now I want that when a button is clicked it should get changer to

android:enabled="true"

我怎样才能做到这一点？

How can I do this?

推荐答案

下面是一个例子如何启用/禁用活动：

Here's an example how to enable/disable an Activity:

    PackageManager pm = getPackageManager(); 
    pm.setComponentEnabledSetting(new ComponentName(this, com.packagename.MyActivity.class),
                                  PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);

    pm.setComponentEnabledSetting(new ComponentName(this, com.packagename.MyActivity.class),
                                  PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);