Question

（我不是新手！，记忆就足够了。）

我正在研究android ICS（SDK 4.0），当我调用startActivityResult时，我的活动生命周期很奇怪。

之前的每次都会破坏!!

当另一个活动被召唤并且来到前方并重叠时，每次重叠活动 - 后面的活动 - 都会破坏，而不是在姜饼中看到（2.3.3）。

下面的日志只是Activity1调用Activity 2的程序，只是在Activity 2中按下后退键时返回结果.aigna没有任何标志。这是我修改过的日志..

左边是在ICS（Gal Nex）中运行，右边是在Gingerbread（Nex one）中运行

Log when runned in GingerBread
-------
 - Start ActivityStackTest1 and launched ActivityStackTest2 immediately.

_ActivityStackTest1 _ onCreate_called..

_ActivityStackTest1 _ onCreate_calling new activity.. - starting activity for result

_ActivityStackTest1 _ onStart_called..

_ActivityStackTest1 _ onResume_called..

_ActivityStackTest1 _ onSaveInstanceState_called..

_ActivityStackTest1 _ onPause_called..

_ActivityStackTest2 _ onCreate_rendering..

_ActivityStackTest2 _ onCreate_got str - PASSED INTENT STRING

_ActivityStackTest2 _ onStart_called..

_ActivityStackTest2 _ onResume_called..

_ActivityStackTest1 _ onStop_called..



 - Pressed Back Key and returned to ActivityStackTest1.

_ActivityStackTest2 _ onPause_called..

_ActivityStackTest1 _ onActivityResult_returned somehow.

_ActivityStackTest1 _ onStart_called..

_ActivityStackTest1 _ onResume_called..

_ActivityStackTest2 _ onStop_called..






Log when runned in IcecreamSandwich
=======

  - Start ActivityStackTest1 and launched ActivityStackTest2 immediately.

_ActivityStackTest1 _ onCreate_called..

_ActivityStackTest1 _ onCreate_calling new activity.. - starting activity for result

_ActivityStackTest1 _ onStart_called..

_ActivityStackTest1 _ onResume_called..

_ActivityStackTest1 _ onSaveInstanceState_called..

_ActivityStackTest1 _ onPause_called..

_ActivityStackTest2 _ onCreate_rendering..

_ActivityStackTest2 _ onCreate_got str - PASSED INTENT STRING

_ActivityStackTest2 _ onStart_called..

_ActivityStackTest2 _ onResume_called..

_ActivityStackTest1 _ onStop_called..

**_ActivityStackTest1 _ onDestroy_called..** <- ???




 - Pressed Back Key and returned to ActivityStackTest1.


_ActivityStackTest2 _ onPause_called..

_ActivityStackTest1 _ onCreate_called..

_ActivityStackTest1 _ onCreate_calling new activity.. - starting activity for result

_ActivityStackTest1 _ onStart_called..

_ActivityStackTest1 _ onActivityResult_returned somehow.

_ActivityStackTest1 _ onResume_called..

_ActivityStackTest1 _ onSaveInstanceState_called..

_ActivityStackTest1 _ onPause_called..

_ActivityStackTest1 _ onStop_called..

_ActivityStackTest1 _ onDestroy_called..

我在想错吗？是不是之前的活动应该等到孩子活动结束，而不是自己完成？

是否有任何问题改变了ICS后的生命周期？当你对它有所了解时，请注意我，这非常令人头疼。

添加 - 我的代码在这里......如果需要的话。

ACT1 包kr.bos.Subclasses;

import kr.bos.Framework.BaseActivity;
import kr.bos.Framework.Logger;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;

public class ActivityStackTest1 extends BaseActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Logger.e("called..");

        if(!mOptionA) {
            Logger.i("calling new activity.. - starting activity for result");
            Intent intent = new Intent(this,ActivityStackTest2.class);
            intent.putExtra("STRING", "PASSED INTENT STRING");
            startActivityForResult(intent , 0);
        }
    }

    @Override protected void onStart() {
        // FIXME Auto-generated method stub
        super.onStart();
        Logger.e("called..");
    }

    @Override protected void onResume() {
        // FIXME Auto-generated method stub
        super.onResume();
        Logger.e("called..");
    }

    @Override protected void onPause() {
        super.onPause();
        Logger.e("called..");
    }

    @Override protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Logger.e("called..");
    }

    @Override protected void onStop() {
        // FIXME Auto-generated method stub
        super.onStop();
        Logger.e("called..");
    }

    @Override protected void onDestroy() {
        // FIXME Auto-generated method stub
        super.onDestroy();
        Logger.e("called..");
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode,
            Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Logger.i("returned somehow.");
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        Logger.i("on configuration change");
    }
}

ACT2 包kr.bos.Subclasses;

import kr.bos.Framework.BaseActivity;
import kr.bos.Framework.Logger;
import android.content.res.Configuration;
import android.os.Bundle;

public class ActivityStackTest2 extends BaseActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Logger.i("rendering..");

        String strget = getIntent().getStringExtra("STRING");
        Logger.i("got str - "+strget);
    }


    @Override protected void onStart() {
        // FIXME Auto-generated method stub
        super.onStart();
        Logger.e("called..");
    }

    @Override protected void onResume() {
        // FIXME Auto-generated method stub
        super.onResume();
        Logger.e("called..");
    }

    @Override protected void onPause() {
        super.onPause();
        Logger.e("called..");
    }

    @Override protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Logger.e("called..");
    }

    @Override protected void onStop() {
        // FIXME Auto-generated method stub
        super.onStop();
        Logger.e("called..");
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        Logger.i("on configuration change");
    }

    @Override
    public void onBackPressed() {
        setResult(0);
        super.onBackPressed();
    }
}

Answer 1

解决。确保“选项 - 开发 - 不要保持活动”未经检查。除非，你所做的所有活动都会让人感到奇怪。

检查相关问题 http://androidforums.com/verizon-galaxy-nexus/482038-dont-keep-activities-box.html http://forum.xda-developers.com/showthread.php?t=1365748

Answer 2

没有人说这不会发生。 onActivityResult()是唯一的承诺！

onCreate在onActivityResult之前调用 - 启动新活动总是导致之前的活动完成

2 个答案: