android - How to register an application as a Home alternative -

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i'm building alternative home application (a replacement of standard launcher).

there's don't know how make : how register application called when user click on home hard button ?

it depends on intent filter:

    <intent-filter>         <action android:name="android.intent.action.main" />         <category android:name="android.intent.category.home"/>         <category android:name="android.intent.category.default" />     </intent-filter>

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