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  In Android layout files, the attribute tools:context is used for design-time preview purposes. It is not functional or relevant during the actual runtime of the application. The tools:context attribute allows you to specify the activity or fragment class that the layout is associated with, providing a context for the layout editor to render a preview of the UI. By setting this attribute, the layout editor can apply the correct theme, display sample data, and provide a more accurate representation of how the layout will look when the associated activity or fragment is running. Here's an example of how the tools:context attribute is used in a layout file: < layout xmlns:android = "http://schemas.android.com/apk/res/android" xmlns:tools = "http://schemas.android.com/tools" > < data > <!-- Data binding variables --> </ data > < RelativeLayout android:layout_width = "match_parent"

To change the timezone in an Android mobile device, you can follow these steps: Open the "Settings" app on your Android device. Scroll down and select "System" (or "General Management" on Samsung devices). Depending on your device, select "Date & time," "Time & language," or "Language & region." Toggle the "Automatic time zone" option to "Off" or "Disable." Select the time zone you want from the list of available time zones. Once you have selected the time zone, the changes will automatically be saved. Your device's clock should now display the correct time and date for the selected timezone. Note that the exact steps to change the timezone may vary slightly depending on the version of Android and the manufacturer of your device. However, the basic process should be similar across most Android devices. Change Timezone in Samsung Mobiles, Oppo, MI and other Android mobiles.