低于 API 级别 24 => 错误膨胀 class android.support.design.widget.FloatingActionButton

Question

当我 运行 我的代码低于 API 级别 24 时，我遇到了这个异常。

FATAL EXCEPTION: main Process: com.example.scanwithanimations, PID: 13393 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.scanwithanimations/com.example.scanwithanimations.MainActivity}: android.view.InflateException: Binary XML file line #14: Error inflating class

android.support.design.widget.FloatingActionButton

我的main.xml如下

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout

xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingTop="16dp">

<android.support.design.widget.FloatingActionButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_marginRight="16dp"
    android:layout_marginBottom="164dp"
    android:src="@drawable/ic_action_wifi"
    android:elevation="6dp"
    android:id="@+id/fabwifi"
    app:pressedTranslationZ="12dp"
    android:backgroundTint="@color/fab1"
    android:visibility="invisible"
    />

</android.support.design.widget.CoordinatorLayout>

Answer 1

使用这个

• app:elevation="6dp"
• app:backgroundTint="@color/fab1"

代替这个

• android:elevation="6dp"
• android:backgroundTint="@color/fab2"

示例代码

<android.support.design.widget.FloatingActionButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_marginRight="16dp"
    android:layout_marginBottom="164dp"
    android:src="@drawable/ic_action_wifi"
    app:elevation="6dp"
    android:id="@+id/fabwifi"
    app:pressedTranslationZ="12dp"
    app:backgroundTint="@color/fab1"
    android:visibility="invisible"
    />