What elements can be omitted when filling out the manifest file in an Android app?

In the Android manifest, the following elements can be omitted if they are not needed or if default values are used:

• android:icon — if the app icon is not specified, a default icon will be used.
• android:label — if not specified, the package name is used.
• <intent-filter> for components — if the component should not be accessible from outside, filters can be omitted.
• android:theme — if no theme is specified, the default theme will be used.
• <meta-data> — if there is no additional information.

It is important that the minimal manifest contains the <manifest> tag with the package attribute and at least one <application> or <activity>. Many attributes have default values, so they can be omitted.