android – onActivityResult执行两次

来自HomeActivity我试图从CreateProfileActivity获得结果.这是我开始活动的方法

Intent createProfile = new Intent(this,CreatePreacherActivity.class);
startActivityForResult(createProfile,1);

这里是HomeActivity中onActivityResult方法的实现：

@Override
    protected void onActivityResult(int requestCode,int resultCode,Intent data) {


        if (requestCode == 1)
        {

            Log.d("DEV","HomeActivity is reciving data");
            if (resultCode == RESULT_OK)
            {

                // this code here execute at the second call
                // but why there are two calls when i just call setResult once???

                User user = new User();

                String[] userInfo = data.getStringArrayExtra("preacher");

                //parsing and saving and database code...

                Log.d("DEV","HomeActivity data received->"+user);

                CurrentUser.set(this,user);
                fillCurrentUserInforms();
            }

            // if while searching for the preacher list
            // and none was found on database. Then tell the user
            // to create a new profile
            else if (resultCode == RESULT_CANCELED)
            {
                Intent createPreacherIntent = new Intent( this,CreatePreacherActivity.class );
                startActivityForResult(createPreacherIntent,1);
            }
        }

当我完成并按下CreateProfileActivity中的保存时,我将把数据发送回HomeActivity：

**private void createProfile()
{
   // some parsing and inserting the new data code..
    User u = new User();
    u.setName(newPreacher.getName());
    u.setLastName(newPreacher.getLastName());
    u.setId(newPreacher.getId());
    u.setSex(newPreacher.getSex());
    CurrentUser.set(this,u);
    if (getParent() == null)
    {
        setResult(RESULT_OK,createPreacherDataIntent(newPreacher));
    }
    else
    {
        getParent().setResult(RESULT_OK,createPreacherDataIntent(newPreacher));
    }
    Log.d("DEV","Exiting from CreatePreacherActivity");
    finish();
}**

setResult方法在CreateProfileActivity上调用一次,但由于某些未知原因,当数据到达HomeActivity.onActivityResult方法时,执行两次. requestCode = 0的第一个结果和requestCode = 1的第二个结果.之后,HomeActivity.onActivityResult执行,自第一次调用requestCode为0以来,CreateProfileActivity再次出现.

那么为什么onActivityResult会执行两次？

第一次通话时0为0,第二次通话为1？

注意：我已经阅读了以下问题,看看我是否做错了但我能看到它：

Android onActivityResult is always 0

fragments startActivityForResult always return resultCode 0 and intent null on callback onActivityResult

And more..

更新：

我的清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="jwutils.einers.informedeserviciotj" >

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".Activities.HomeActivity"
            android:label="Inform de Servicio" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Activities.inform.InformEditableActivity"></activity>
        <activity android:name=".Activities.preacher.CreatePreacherActivity"
            android:label="Crear publicador"/>

        <activity android:name=".Activities.preacher.PreachersListActivity"
            android:label="Usuarios" />

    </application>

</manifest>

解决方法

您应该尝试在onResume()而不是onCreate()中调用它;

Intent createProfile = new Intent(this,1);

Here,它说“当您的活动重新开始时,您将在onResume()之前立即收到此电话.”我相信当您的第一个活动尝试恢复时,会触发第一次调用结果代码为“0”的onActivityResult().