android - 使用 ShowcaseView 定位操作栏菜单项

Question

我正在尝试整合 ShowcaseView (v5.2.3) 进入应用程序，但当我尝试定位操作栏菜单项时，应用程序崩溃并显示运行时异常消息“insertShowcaseViewWithType cannot be used when the theme has no ActionBar”。该 Activity 绝对有一个带有菜单项的操作栏。这发生在 Android v5.1.1 和 v4.4.2 上

崩溃的堆栈跟踪如下...

java.lang.RuntimeException: insertShowcaseViewWithType cannot be used when the theme has no ActionBar
     at com.github.amlcurran.showcaseview.targets.ActionBarReflector.getHomeButton(ActionBarReflector.java:43)
     at com.github.amlcurran.showcaseview.targets.ActionBarReflector.getActionBarView(ActionBarReflector.java:36)
     at com.github.amlcurran.showcaseview.targets.ActionItemTarget.setUp(ActionItemTarget.java:49)
     at com.github.amlcurran.showcaseview.targets.ActionItemTarget.getPoint(ActionItemTarget.java:43)
     at com.github.amlcurran.showcaseview.ShowcaseView$1.run(ShowcaseView.java:176)
     at android.os.Handler.handleCallback(Handler.java:739)
     at android.os.Handler.dispatchMessage(Handler.java:95)
     at android.os.Looper.loop(Looper.java:135)
     at android.app.ActivityThread.main(ActivityThread.java:5254)
     at java.lang.reflect.Method.invoke(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:372)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

app模块build.gradle如下...

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.d60402.myappname"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.github.amlcurran.showcaseview:library:5.2.3'
}

我的 Activity 如下...

package com.d60402.myappname;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;

import com.github.amlcurran.showcaseview.ShowcaseView;
import com.github.amlcurran.showcaseview.targets.ActionItemTarget;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu
        getMenuInflater().inflate(R.menu.main_menu, menu);

        boolean ret = super.onCreateOptionsMenu(menu);

        ActionItemTarget target = new ActionItemTarget(this, R.id.action_settings);

        new ShowcaseView.Builder(this)
                .setTarget(target)
                .setContentTitle("Settings menu")
                .setContentText("Tap here to view and set the app settings")
                .hideOnTouchOutside()
                .build();

        return ret;
    }
}

main_menu.xml如下...

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

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:id="@+id/action_settings"
        android:title="@string/action_settings"
        android:orderInCategory="100"
        app:showAsAction="always|withText"/>
</menu>

AndroidManifest.xml如下...

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.d60402.myappname" >

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

而styles.xml如下...

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>

Answer 1

使用此代码。它为我工作。这里的“toolbar”是我的工具栏的id。

      Target homeTarget = new Target() {
        @Override
        public Point getPoint() {
            // Get approximate position of home icon's center
            int actionBarSize = toolbar.getHeight();
            int x = actionBarSize / 2;
            int y = actionBarSize / 2;
            return new Point(x, y);
        }
    };
    new ShowcaseView.Builder(this)
            .setContentTitle("Its My Navigation Drawer")
            .setContentText("Click here and you will get options to navigate to other sections.")
            .setTarget(homeTarget)
            .build();
}