Question

在我的片段onCreateView方法中，我尝试以编程方式将viewstubs扩展到彼此之下的布局，但前两个发生在彼此之内，like this

这是我的片段onCreateView方法

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

   mBaseLayout = (PercentRelativeLayout) inflater.inflate(R.layout.fragment_calender, container, false);
    findViews();
    mBundle = new Bundle();

    mFragments = new ArrayList<>();
    mDaysContainer = (RelativeLayout) mBaseLayout.findViewById(R.id.daysContainer);



    mStartPeriod = DateAndTime.getFirstDayFirstWeekOfMonthAsString("yyyy-MM-dd");
    mEndPeriod = DateAndTime.getLastDayLastWeekOfMonthAsString("yyyy-MM-dd");

    mPeriodTextView.setText(mStartPeriod + " - " + mEndPeriod);

    createDayFragments(); // Create the fragments
    findDayViewIds();     // Get access to the views

    return mBaseLayout;
}

我使用此方法创建视图并将它们放入容器

 private void createDayFragments() {
    for (int i = 0; i < 30; i++) {
        mFragments.add(new ViewStub(getActivity()));
        mFragments.get(i).setId(i);
        mDaysContainer.addView(mFragments.get(i));
        ViewStub viewStub = (ViewStub) mBaseLayout.findViewById(i);
        viewStub.setInflatedId(i);
        viewStub.setLayoutResource(R.layout.fragment_day);
        Log.d("ID", mFragments.get(i).getId() + "");
        Log.d("i = ", i + "");

        RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

        if(i >= 1){
            p.addRule(RelativeLayout.BELOW, i - 1);
            Log.d("Below ID", i - 1 + "");
        }


        viewStub.setLayoutParams(p);

        Log.d("", "");
        viewStub.inflate();
    }
}

我使用此方法在创建后访问所有视图

  private void findDayViewIds(){
    for(int i = 0; i < 30; i++) {
        RelativeLayout tmpRel = (RelativeLayout) mDaysContainer.findViewById(i);
        for(int j = 0; j < tmpRel.getChildCount(); ++j){
            if(tmpRel.getChildAt(j) instanceof PercentRelativeLayout) {
                PercentRelativeLayout percentTmp = (PercentRelativeLayout) tmpRel.getChildAt(j);
                percentTmp.setId(100 + i);
                for(int h = 0; h < percentTmp.getChildCount(); ++h){
                    if(percentTmp.getChildAt(h) instanceof TextView){
                        TextView textViewTmp = (TextView) percentTmp.getChildAt(h);
                        textViewTmp.setId(300 + i);
                        textViewTmp.setText("Day " + i + " ID: " + tmpRel.getId());
                    }
                }
            } else if (tmpRel.getChildAt(j) instanceof ViewStub){
                tmpRel.getChildAt(j).setId(200 + i);
            }
        }
    }
}

以下是应包含其他片段的片段的XML

<android.support.percent.PercentRelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/weekDisplayed">

<TextView
    android:text="Placeholder"
    android:layout_alignParentTop="true"
    android:gravity="center"
    app:layout_heightPercent="10%"
    app:layout_widthPercent="94%"
    android:layout_centerHorizontal="true"
    android:background="@drawable/datefrom_dateto_bottom_border"
    android:id="@+id/periodTextView"/>


    <ScrollView
        android:id="@+id/scrollView"
        app:layout_widthPercent="94%"
        android:layout_below="@+id/periodTextView"
        android:layout_centerHorizontal="true"
        app:layout_marginBottomPercent="4%"
        android:layout_width="match_parent">

    <RelativeLayout <!-- This is where i want the fragments -->
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:id="@+id/daysContainer">

        </RelativeLayout>

</ScrollView>

</android.support.percent.PercentRelativeLayout>

这是我想要扩展到我的daysContainer相对布局

的片段的xml

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content">



 <android.support.percent.PercentRelativeLayout
        android:gravity="center_vertical"
        android:id="@+id/dayContainerOne"
        android:layout_width="match_parent"
        android:layout_height="35dp"
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto">


        <TextView
            app:layout_marginLeftPercent="2%"
            android:text="placeholder"
            android:id="@+id/weekOneTextView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:typeface="monospace"/>

    </android.support.percent.PercentRelativeLayout>

    <ViewStub layout="@layout/fragment_replace"
              android:id="@+id/replaceOne"
              android:layout_below="@id/dayContainerOne"
              android:layout_height="wrap_content"
              android:layout_width="wrap_content">

    </ViewStub>
</RelativeLayout>

Answer 1

尝试将ids向上移动1。因此，您的第一个id不等于0。我的猜测是BELOW如果给定id等于0，则无效。

更新我的评论。

在RelativeLayout来源中找到以下内容：

rules[BELOW] = a.getResourceId(attr, 0);

0是默认值，因此会被忽略。

尝试在片段中以编程方式在彼此之下设置视图

1 个答案: