android Application installed but not showing on screen

Question

My application is installed on real device as well on emulator but it does not display on my device screen as well on emulator screen. I mean to say here that whenever an app is run or installed on a device it opens up but here my app does not open it just installed and no error are shown or forced stop is not there. I even checked my download file where every app info is shown and it is present there. Can anyone help???? Thank you in advance.

This is my Manifest file

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

<uses-sdk
    android:minSdkVersion="11"
    android:targetSdkVersion="18" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.hide.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.hide.Info"
        android:label="@string/title_activity_info" >
        <intent-filter>
            <action android:name="com.example.hide.Info" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.hide.Help"
        android:label="@string/title_activity_help" >
        <intent-filter>
            <action android:name="com.example.hide.Help" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.hide.Next"
        android:label="@string/title_activity_next" >
        <intent-filter>
            <action android:name="com.example.hide.Next" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

</application>

Answer 1

Make sure you specify the launcher activity for the app in your AndroidManifest.xml file:

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

More information here: http://developer.android.com/training/basics/activity-lifecycle/starting.html