清除活动堆栈。首先运行活动 [英] Clearing activity stack. First run activities

问题描述

我有一个启动这样在首次运行导入流应用程序：

I've got an application that launches an introduction flow on first run like this:

第一次运行

答：介绍文字

A：使用条件

C：选择语言

所有这些步骤都完成后，应用程序设置一个first_run属性设置为false，并启动活动的 D

After all these steps have been completed, the application sets a first_run attribute to false and launches activity D.

现在，我想要做的是要么清除活性堆栈，这样当用户presses后退按钮它返回到主屏幕，而不是活动的 C ，然后当应用再次启动它直接到活动的 D

Now, what I want to do is either clear the activity stack so that when the user presses the back button it goes back to the Home screen rather than activity C and then when the application launches again it goes straight to activity D.

这是我怎么会去这样做任何想法？

Any ideas on how I would go about doing this?

修改

我知道，调用完成（）上的每一项活动从堆栈中删除。但我真正的问题是，如果用户希望从回去的乙为 A 也不会工作，如果我已经呼吁的 A完成（） 。对不起，不指定这点。

I'm aware that calling finish() on each activity removes it from the stack. But my real problem is that if the user wants to go back from B to A it won't work if I've already called finish() on A. Sorry for not specifying this earlier.

推荐答案

这是肯定的，道歉过去后要去工作。
后来我才意识到这是它不会工作。

This is gonna work for sure, apologies for the last post. I realised it later that it wont work.

在活动A，B和C用途：

In Activity A, B and C use:

BroadcastReceiver myReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("ActivityA", "finishing A");
        finish();
    }
};

@Override
protected void onDestroy() {
    unregisterReceiver(myReceiver);
    super.onDestroy();
} // This is mandatory to unregister the receiver, else error occur

在这些活动中的onCreate，添加：

In onCreate of these activities, add:

IntentFilter myFilter = new IntentFilter("finish_my_activities");
registerReceiver(myReceiver, myFilter);

在活动D，在那里你想结束这一切：

In activity D, where you wanna finish all this:

sendBroadcast(new Intent("finish_my_activities"));
//Where ever you wanna finish those activities

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