Question

styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="AppTheme.Base">

        <item name="colorPrimary">@color/colorPrimary</item>

        <!-- Customize your theme here. -->
    </style>

    <style name="AppTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="MyCustomToolBarTheme" parent="ThemeOverlay.AppCompat.Dark">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>



    </style>


</resources>

styles.xml v21

<resources>>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    </style>
</resources>

app_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#F44336"
    app:theme="@style/MyCustomToolBarTheme"
    app:popupTheme="@style/MyCustomToolBarTheme"
    android:elevation="0dp"
    >



</android.support.v7.widget.Toolbar>

LogCar错误：

Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                                                                               at android.support.v7.app.AppCompatDelegateImplBase.onCreate(AppCompatDelegateImplBase.java:122)
                                                                               at android.support.v7.app.AppCompatDelegateImplV7.onCreate(AppCompatDelegateImplV7.java:146)
                                                                               at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:59)
                                                                               at com.tontosworld.tontosworld.MainActivity.onCreate(MainActivity.java:67)
                                                                               at android.app.Activity.performCreate(Activity.java:5231)
                                                                               at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
                                                                               at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
                                                                               at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
                                                                               at android.app.ActivityThread.access$800(ActivityThread.java:135) 
                                                                               at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
                                                                               at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                               at android.os.Looper.loop(Looper.java:136) 
                                                                               at android.app.ActivityThread.main(ActivityThread.java:5017) 
                                                                               at java.lang.reflect.Method.invokeNative(Native Method)

android应用程序在android lolipop及以上版本正常工作但在kitkat或更低版本中崩溃。

请帮助我为什么它崩溃在kitkat版本的android中。

日志

Answer 1

elevation是自Android API 21以来推出的。

尝试删除android:elevation="0dp"

android中的IllegalStateException。你需要使用Theme.AppCompat

1 个答案: