使用不同的片段进行步骤

Question

我使用android-material-stepper库进行步骤实现，但在这里我可以使用一个片段，它显示了 3 个步骤。

我需要不同步骤的不同片段，如何使用？

我有不同的观点，比如片段 1 有日历，片段 2 有按钮，片段 3 有输入框。 我想分别为每 3 个步骤使用所有 3 个片段。

我按照该 GitHub 页面中所示进行了实施，并且他们在 3 个步骤中仅使用了 1 个片段。 有没有办法使用3个片段？ 如果不是，我如何区分同一片段中每个步骤的 3 个功能？

请帮忙！

Answer 1

您需要在StepperAdapters createStep()函数中实现此行为。

你可以这样做：

@Override
public Step createStep(int position) {

    Bundle b = new Bundle();
    b.putInt(CURRENT_STEP_POSITION_KEY, position);

    switch (position){
        case 0:
            MyCalendarStepFragment calendarFragment = new MyCalendarStepFragment();
            calendarFragment.setArguments(b);
            return  calendarFragment;
        case 1:
            MyButtonStepFragment buttonFragment = new MyButtonStepFragment();
            buttonFragment.setArguments(b);
            return  buttonFragment;
        case 2:
            MyInputStepFragment inputFragment = new MyInputStepFragment();
            inputFragment.setArguments(b);
            return  inputFragment;
    }

    return null;
}

Answer 2

您可以在“CURRENT_STEP_POSITION_KEY”中输入任何值我尝试了相同的过程但我的第一步是空的这是我的适配器

private val pages = SparseArray<Step>()

override fun createStep(@IntRange(from = 0)position: Int): Step {
    //val step = StepFragmentSample()
    //val b = Bundle()
    //b.putInt(CURRENT_STEP_POSITION_KEY, position)
    //step.setArguments(b)
    //return step
    val b = Bundle()
    val CURRENT_STEP_POSITION_KEY = "CURRENT_STEP_POSITION_KEY"
    b.putInt(CURRENT_STEP_POSITION_KEY, position)
    return when (position) {
        2 -> {
            //FormAddBashDocumentFragment()
            val addBashDocumentFragment = FormAddBashDocumentFragment()
            addBashDocumentFragment.setArguments(b)
            return addBashDocumentFragment

        }
        1 -> {
            //FormAddClaimsFragment()
            val addClaimsFragment = FormAddClaimsFragment()
            addClaimsFragment.setArguments(b)
            return addClaimsFragment
        }
        0 -> {
            //FormAddClaimBatchesFragment()
            val addClaimBatchesFragment = FormAddClaimBatchesFragment()
            addClaimBatchesFragment.setArguments(b)
            return addClaimBatchesFragment
        }

        else -> throw IllegalArgumentException("Unsupported position: " + position)

    }
}

override fun getCount(): Int {
    return 3
}

override fun findStep(position: Int): Step? {
    return if (pages.size() > 0) pages.get(position) else null
}

override fun instantiateItem(container: ViewGroup, position: Int): View {
    var step: Step? = pages.get(position)
    if (step == null) {
        step = createStep(position)
        pages.put(position, step)
    }

    val stepView = step as View
    container.addView(stepView)

    return stepView
}

override fun destroyItem(container: ViewGroup, position: Int, `object`: Any) {
    container.removeView(`object` as View)
}

override fun getViewModel(@IntRange(from = 0)position: Int): StepViewModel {
    //Override this method to set Step title for the Tabs, not necessary for other stepper types
    val builder = StepViewModel.Builder(context)
        .setTitle("New batch")
    when (position) {
        0 -> builder
            .setTitle("Batch")
            .setEndButtonLabel("claim")
            .setBackButtonLabel("Cancel")
            .setBackButtonStartDrawableResId(StepViewModel.NULL_DRAWABLE)
        1 -> builder
            .setTitle("claim")
            .setBackButtonLabel("Back to batch")
        2 -> builder
            .setTitle("Documents")
            .setBackButtonLabel("Back to claim")
            .setEndButtonLabel("I'm done!")
        else -> throw java.lang.IllegalArgumentException("Unsupported position: $position")
    }
    return builder.create()
}