android - 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。

我需要不同的片段用于不同的步骤，如何使用？

我有不同的视图，例如片段 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。

我按照那个 GitHub 页面所示的方式实现了，他们只使用 1 个片段进行 3 个步骤。有什么方法可以使用 3 个片段吗？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里是我的适配器

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()
}