Question

我开始使用Autosizing TextView，并且在大多数情况下效果很好，以下情况除外。

我有一个recyclerview，在项目布局中，我有以下TextView：

<TextView
    android:id="@+id/title_tv"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp"
    android:ellipsize="end"
    android:gravity="top|center_horizontal"
    android:maxLines="2"
    android:textColor="@color/e_white"
    app:autoSizeMaxTextSize="14sp"
    app:autoSizeTextType="uniform"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHeight_min="25dp"
    app:layout_constraintStart_toStartOf="parent"
    tools:text="@tools:sample/cities" />

这很好，但是如果我将app:autoSizeMaxTextSize减小为12sp，则会引发以下异常：

android.view.InflateException: Binary XML file line #30: Binary XML file line #30: Error inflating class TextView
        at android.view.LayoutInflater.inflate(LayoutInflater.java:543)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
        at my.package.MyAdapter.onCreateViewHolder(MyAdapter.java:41)
        at my.package.MyAdapter.onCreateViewHolder(MyAdapter.java:22)
        at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6794)
        at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5975)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854)
        at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230)
        at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557)
        at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517)
        at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612)
        at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924)
        at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3641)
        at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:4194)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
        at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
        at android.view.View.layout(View.java:16672)
        at android.view.ViewGroup.layout(ViewGroup.java:5440)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2207)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1963)

有人可以向我解释这种行为吗？

Answer 1

在指定app:autoSizeMaxTextSize=12sp时会发生这种情况，因为最大值然后等于autoSize可能具有的最小文本大小（也是默认的12sp）。

autoSize不允许最大值等于或小于最小值（否则它始终不会自动调整大小）。

解决方案：

要能够将最大值设置为12sp，您需要减小它在app:autoSizeMinTextSize=6sp中可能具有的最小文本大小。

使用AutoSizing扩展类TextView时出错

1 个答案: