Tencent/QMUI_Android · error · RuntimeException

More than one view in xml are marked by qmui_is_target = tru

Error message

More than one view in xml are marked by qmui_is_target = true.

What it means

QMUIPullLayout.onFinishInflate throws when more than one child view in the layout XML has qmui_is_target="true". The pull layout supports exactly one target view (the scrollable content), so duplicates are treated as an invalid layout.

Source

Thrown at qmui/src/main/java/com/qmuiteam/qmui/widget/pullLayout/QMUIPullLayout.java:120

        TypedArray array = context.obtainStyledAttributes(attrs,
                R.styleable.QMUIPullLayout, defStyleAttr, 0);
        mEnabledEdges = array.getInt(R.styleable.QMUIPullLayout_qmui_pull_enable_edge, PUL_EDGE_ALL);
        array.recycle();
        mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
        mScroller = new OverScroller(context, QUNITIC_INTERPOLATOR);
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        boolean isTargetSet = false;
        int edgesSet = 0;
        for (int i = 0; i < getChildCount(); i++) {
            View view = getChildAt(i);
            LayoutParams lp = (LayoutParams) view.getLayoutParams();
            if (lp.isTarget) {
                if (isTargetSet) {
                    throw new RuntimeException(
                            "More than one view in xml are marked by qmui_is_target = true.");
                }
                isTargetSet = true;
                setTargetView(view);
            } else {
                if ((edgesSet & lp.edge) != 0) {
                    String text = "";
                    if (lp.edge == PULL_EDGE_LEFT) {
                        text = "left";
                    } else if (lp.edge == PULL_EDGE_TOP) {
                        text = "top";
                    } else if (lp.edge == PULL_EDGE_RIGHT) {
                        text = "right";
                    } else if (lp.edge == PULL_EDGE_BOTTOM) {
                        text = "bottom";
                    }
                    throw new RuntimeException("More than one view in xml marked by qmui_layout_edge = " + text);
                }

View on GitHub (pinned to 026e7d4866)

Solutions

Keep qmui_is_target="true" on exactly one direct child of QMUIPullLayout.
Remove the attribute from included/merged layouts, or set it only on the include root.
Move non-target content (e.g. action views) to children marked only with qmui_layout_edge.

Example fix

<!-- before -->
<com.qmuiteam.qmui.widget.pullLayout.QMUIPullLayout>
    <View app:layout_qmui_is_target="true"/>
    <View app:layout_qmui_is_target="true"/>
</...>
<!-- after: only one target -->
<com.qmuiteam.qmui.widget.pullLayout.QMUIPullLayout>
    <View app:layout_qmui_is_target="true"/>
    <View app:layout_qmui_layout_edge="top"/>
</...>

Defensive patterns

Strategy: validation

Validate before calling

// pre-inflate XML audit
int targetCount = 0;
for (int i = 0; i < pullLayout.getChildCount(); i++) {
    QMUIPullLayout.LayoutParams lp = (QMUIPullLayout.LayoutParams) pullLayout.getChildAt(i).getLayoutParams();
    if (lp.isTarget) targetCount++;
}
// targetCount must be exactly 1

Try / catch

try {
    setContentView(R.layout.pull_screen);
} catch (RuntimeException e) {
    throw new IllegalStateException("check qmui_is_target: exactly one child allowed", e);
}

Prevention

Mark qmui_is_target on exactly one direct child per QMUIPullLayout.
Never mark targets inside <include>/<merge> sources that get inflated into the pull layout.
Lint/review XML diffs for duplicated attributes after copy-paste.

When it happens

Trigger: Declaring two or more children in the QMUIPullLayout XML with the attribute app:qmui_is_target="true"; also merging/inflating an included layout that also marks a target into the same pull layout.

Common situations: Copy-pasting a child block in XML and leaving the attribute on both; combining a manually declared target with an <include> whose root also sets qmui_is_target.

Understand the failure class

Background: "Invalid value" and "allowed values are" config errors: what your library rejected and how to fix it — this error's family across 41 libraries.

Related errors

AI-assisted analysis of Tencent/QMUI_Android@026e7d4866 (2026-09-06). Data as JSON: /api/errors/b16f30bde9a3a6d4. Report an issue: GitHub.