java - 删除 fragment 中的工具栏

Question

我使用了 Android 的“底部导航 Activity ”示例，但在每个 fragment 中， fragment 顶部都有一个空白工具栏(屏幕截图中屏幕顶部的白色条)。我已经在 list 文件和布局预览中应用了 NoActionBar，我看不到工具栏。如何删除每个 fragment 顶部的工具栏？

AndroidManifest.xml:

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

<uses-permission android:name="android.permission.VIBRATE" />

<application
    android:allowBackup="false"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.Quizeule">
    <activity android:name=".activities.PlayActivity" />
    <activity android:name=".activities.SplashScreenActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

</manifest>

主题.xml:

<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.Quizeule" parent="Theme.MaterialComponents.DayNight.NoActionBar">
    <!-- Primary brand color. -->
    <item name="colorPrimary">@color/purple_500</item>
    <item name="colorPrimaryVariant">@color/purple_700</item>
    <item name="colorOnPrimary">@color/white</item>
    <!-- Secondary brand color. -->
    <item name="colorSecondary">@color/teal_200</item>
    <item name="colorSecondaryVariant">@color/teal_700</item>
    <item name="colorOnSecondary">@color/black</item>
    <!-- Status bar color. -->
    <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
    <!-- Customize your theme here. -->
</style>
</resources>

Answer 1

试试这个:

İ如果您使用 java；在 fragment onCreate 中写入:

 GetActivity.getSupportedActionBar.hide();

或者，

    // set Windows Flags to Full Screen
 getWindow().setFlags( WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 

    

或者如果你使用 kotlin ；在onCreateview中写入:

(activity as AppCompatActivity).supportActionBar!!.hide()}

或者

 requiredActivity.supportActionBar!!.hide()