【问题标题】:Trying to implement Toolbar with AppCompat v21尝试使用 AppCompat v21 实现工具栏
【发布时间】:2014-11-29 12:29:48
【问题描述】:

我正在尝试按照本指南http://antonioleiva.com/material-design-everywhere/ 使用 AppCompat v21 实现工具栏,但是我无法在 KitKat 或 Lollipop 上启动并收到相同的错误消息(如下)。我完全相信我已经正确设置了主题,但我被困在这一点上并且已经坚持了一天多。我没有成功搜索解决方案,所以现在我正在寻求一些帮助。谢谢!

> 11-29 06:08:46.892  29771-29771/com.chaoticearth.chaoticearth E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.ce.ce, PID: 29771
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ce.ce/com.ce.ce.DrawerActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2212)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2271)
            at android.app.ActivityThread.access$800(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1205)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5146)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:151)
            at android.support.v7.app.ActionBarActivityDelegateBase.onCreate(ActionBarActivityDelegateBase.java:138)
            at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:123)
            at com.ce.ce.BaseActivity.onCreate(BaseActivity.java:16)
            at com.ce.ce.DrawerActivity.onCreate(DrawerActivity.java:92)
            at android.app.Activity.performCreate(Activity.java:5231)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2169)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2271)
            at android.app.ActivityThread.access$800(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1205)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5146)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at dalvik.system.NativeStart.main(Native Method)

这是我的 /res/values/themes.xml

<resources>

<style name="CETheme" parent="AppTheme" ></style>
<style name="AppTheme" parent="Theme.AppCompat">
    <item name="android:colorPrimaryDark">@color/MidnightBlue</item>
    <item name="android:colorAccent">@color/LightYellow</item>
    <item name="android:windowNoTitle">true</item>
    <item name="windowActionBar">false</item>

</style>

这是我的 /res/values-v21/themes.xml

<?xml version="1.0" encoding="utf-8"?>

    <item name="android:windowContentTransitions">true</item>
    <item name="android:windowAllowEnterTransitionOverlap">true</item>
    <item name="android:windowAllowReturnTransitionOverlap">true</item>
    <item name="android:windowSharedElementEnterTransition">@android:transition/move</item>
    <item name="android:windowSharedElementExitTransition">@android:transition/move</item>

    <item name="android:colorPrimary">@color/ChaosBlue</item>
    <item name="android:colorPrimaryDark">@color/MidnightBlue</item>
    <item name="android:colorAccent">@color/LightYellow</item>
    <item name="android:statusBarColor">@color/ChaosBlue</item>

</style>

这是我的 DrawerActivity.java 中抛出错误的 sn-p:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setActionBarIcon(R.drawable.ic_drawer);

还有一个来自 BaseActivity.java 的 sn-p 被调用:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(getLayoutResource());
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    if (toolbar != null) {
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
}

最后是我的 AndroidManifest.xml 中的一个 sn-p

<application
    android:allowBackup="true"
    android:icon="@drawable/logo"
    android:label="@string/app_name"
    android:theme="@style/CETheme"
    android:name="android.support.multidex.MultiDexApplication">

【问题讨论】:

    标签: android toolbar android-appcompat


    【解决方案1】:

    我终于偶然发现了原因,在我的 AndroidManifest 中,我为 DrawerActivity 设置了一个主题,这是导致错误的原因。

    【讨论】:

      【解决方案2】:

      尝试在 res/values/ 中将 android:colorPrimaryDark 替换为 colorPrimaryDarkandroid:colorAccent 替换为 colorAccent主题.xml。

      【讨论】:

      • 感谢 Mohammad,这不是原因,但仍然需要更改这些值。
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