Question

场景：

MainActivity（我们将其称为活动A）具有3个片段，并开始了活动B。活动B然后是startActivityForResult（活动C）。问题是，在活动C上将结果设置为OK并调用onBackPress时，活动B上会调用startActivityForResult，但几秒钟后活动B将关闭。

活动A->活动B->活动C（用于结果），结果确定，完成

然后->活动B的onActivityResult被调用，结果为OK，但活动B完成并返回到ActivityA，后者重新加载了两次（我使用Logcat并看到两次为活动B和活动A调用了onDestroy和onCreate两次）。

找到以下内容，但对我没有多大帮助Activity is closed after onActivityResult is called

试图查看launchMode

这是清单：

<activity
            android:name=".activities.ActivityA"
            android:screenOrientation="portrait"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:theme="@style/AppTheme.NoActionBar"
            android:windowSoftInputMode="stateHidden">
    </activity>

    <activity
            android:name=".activities.ActivityB"
            android:screenOrientation="portrait"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:theme="@style/AppTheme.NoActionBar.Profile">
    </activity>

    <activity
            android:name=".activities.ActivityC"
            android:screenOrientation="portrait"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:theme="@style/AppTheme.NoActionBar.Profile"
            android:windowSoftInputMode="stateHidden|adjustPan">
    </activity>

这是发布会：

活动A至活动B：

intent = Intent(this@ActivityA, ActivityB::class.java)
            intent.putExtra("user", user)
            startActivity(intent)

活动B至活动C：

val intent = Intent(this@ActivityB, ActivityC::class.java)
    intent.putExtra("user", user)

活动C设置结果确定并完成：

setResult(Activity.RESULT_OK)
finish()

行为的截屏：https://youtu.be/gMlH5iujoh0

任何帮助表示赞赏

编辑：活动B onActivityResult

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (requestCode == REQUEST_CODE_EDIT_PROFILE && resultCode == Activity.RESULT_OK) {
        Timber.e("REQUEST_CODE_EDIT_PROFILE OK AND RESULT OK")
        HelperTools(applicationContext).toastStatus(
            getString(R.string.your_profile_has_been_updated),
            Toast.LENGTH_SHORT,
            ToastType.SUCCESS
        )
        populateData(user)
    }
}

Answer 1

val intent = Intent(this@ActivityB, ActivityC::class.java)
startActivityForResult(Intent(this@ActivityB,ActivityC::class.java),REQUEST_CODE_EDIT_PROFILE ))

请确认通过日志正确传输和接收了数据，并找出导致onDestroy的原因

下面的示例代码用于获取可计算的数据

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
        case REQUEST_CODE_CONTACT_SELECTION:
            if (resultCode == Activity.RESULT_OK) {
                assert data != null;
                ContactModel mContactModel = data.getParcelableExtra("contactResult");

                new MessageDialog(this)
                        .setMessage(getString(R.string.are_you_sure_you_want_to_block_contact, mContactModel.getFullName()))
                        .setPositiveButton(getString(R.string.yes), (dialog, which) -> {
                            dialog.dismiss();
                            API_blockUnblockContact(mContactModel, true);
                        })
                        .setNegativeButton(getString(R.string.no), (dialog, which) -> dialog.dismiss()).show();
            }
            if (resultCode == Activity.RESULT_CANCELED) {
                //Write your code if there's no result
                Logger.e(TAG, "Result Canceled");
            }
            break;
    }
}

使用onActivityResult获得结果后，活动完成

1 个答案: