How To Set SupportRTL in AndroidManifest for Specifed Activity

Question

i removed Action Bar from all activities Then I put to specific activity an action bar and when i used SupportsRtl (in Specifed Activity) for change title position but title position still no changed

styles :

<resources>

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

<style name="myTheme" parent="Theme.AppCompat.Light">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="android:textColorPrimary">#FFFFFF</item>
</style>

</resources>

Manifest :

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.user.classmanager">

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    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>

    <activity android:name=".FirstTab" />
    <activity android:name=".SecondTab" />
    <activity android:name=".ThirdTab" />

    <activity android:name=".AddNewClass"
        android:theme = "@style/myTheme"
        android:supportsRtl="true"  <==== DONT WORK
        android:label="اضافه کردن کلاس">
    </activity>
</application> </manifest>

Answer 1

You can't do such thing in Manifest.xml.

I recommend set android:layoutDirection="rtl" into your activity parent layout to set just that specific activity support rtl.

this article has great information about layout directions support.

Answer 2

When you enable support for RTL layouts like this:

<application
    ...
    android:supportsRtl="true">

You enable the use of this feature for every activity in the app.

This suggests that the problem probably lies in the layout of your AppBarLayout/ Toolbar.

In order for the application to properly reflect the direction, you should use the appropriate attributes - instead of using Left/Right, you should use Start/End ones. To read more check Android Developers Blog.

You can also use the automatic Android Studio option by selecting Refactor > Add RTL Support Where Possible...