Why does my application appear 4 times on my device?

Question

When I install my application on a device or emulator, it appears several times in the application menu, in my case I get 4 icons showing my application name.

It seems that each icon is an action, and since my application contains 3 tabs (with actions), the first 3 icons in my menu go to a specific action, and the 4th icon leads me to the application itself

This is my manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.jameselsey"
      android:versionCode="1"
      android:versionName="1.0">

    <uses-sdk android:minSdkVersion="7" />  
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>    
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_CONTACTS" />

    <application    android:icon="@drawable/icon" 
                    android:label="@string/app_name" 
                    android:name="com.jameselsey.domain.GlobalState"
                    android:theme="@android:style/Theme.NoTitleBar">

        <activity android:name=".DefaultActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

         <activity android:name=".MyContactsActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

         <activity android:name=".MyMapsActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>   

        <activity android:name=".OptionsActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <uses-library android:name="com.google.android.maps" />
    </application>    
</manifest> 

What can I do to have only one icon for my application on my device, and not 4?

thank

Answer 1

, . Java , main, single .

Android , Activity . , . , "android.intent.action.MAIN" , , LAUNCHER , . , LAUNCHER, , , 4 4 .

, , .

Answer 2

4

`            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

.

Answer 3

remove intent-filterfrom last 3 actions