启动活动没有显示它 [英] Start activity without showing it

问题描述

我有活性的，它开始活动B和活动B开始活动C.有没有办法不显示活动B. 我想这水煤浆，因为如果有一个活动的B，关于这一点我选择一些数据显示活性C，然后preSS后退按钮返回到活动B.没有内容（如ListView控件） 问题是，我想对活动栈活动B，而不是显示它在某些情况下。

I have an activity A, which starts activity B and activity B starts activity C. Is there a way not to show activity B. I want this behavour because if there is no content (eg for ListView) for activity B, show activity C on which I select some data, and then press back button to go back to activity B. The point is that I would like to have activity B on activity stack, but not to show it in certain cases.

推荐答案

我找到了解决办法：

• 在活动A开始b活动与额外的参数（intent.putExtra（东西，真正的））
• 活动B：

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getIntent().hasExtra("something") && getIntent().getBooleanExtra("something", false) {
            //show activity B
        setContentView(R.layout.activity_B);
    } else {
            //don't show activity B, start activity C
        startActivityForResult(activity_C, ACTIVITY_NOT_INITIALIZED); //start activity C
    }
}

//当来自活性C返回，检查是否b活动已经初始化

//when came back from activity C, check if activity B was already initialized

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == ACTIVITY_NOT_INITIALIZED) {
        //show activity B
        setContentView(R.layout.activity_B);
  }
}

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