Question

Can anyone guide me, Im trying to create a simple app that has splash and main menu activity.

I have implemented both of the activity and whenever I run the emulator I can see the splash pop up but it never goes to the main menu activity.

I tried to change the XML file in manifest as below:

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

    <uses-sdk android:minSdkVersion="7" />
    <application android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" android:name=".activity.StartApp">
 <activity 
        android:name=".activity.MainMenuApp"
        android:label="@string/app_name">

    </activity>

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

Can anyone suggest why the main menu did not show up?

Thanks.

Edit: SplashApp.java

import com.book.R;
public class SplashApp extends Activity {

private DBAdapter mDBAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.splash);
}

@Override
protected void onStart() {

    super.onStart();
    mDBAdapter = new DBAdapter(getApplicationContext());

    try{

... 
….      int sec = 1;
        new Handler().postDelayed(new Runnable(){
            public void run(){
                Intent intent = new Intent(SplashApp.this, MainMenuApp.class);
                startActivity(intent);

                finish();
            }
        }, sec * 1000);
    }catch (Exception e){
        e.printStackTrace();
    }
}
}

I found that the problem might be on my manifest file where it says:

package="com.book"

I am now able to load the splash activity but it won’t go to the main menu page?

Answer 1

If your main menu activity is actually an Activity, it should be also noted in the androidManifest.xml file (with or without intent filters):

...
<activity android:name=".activity.MainMenu" 
    android:label="@string/main_menu">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>
...

In case you are performing initialization tasks in the SplashApp activity, and the main functions of your applications reside in the MainActivity, you would find the DEFAULT intent filter useful though.

edit1: remove the android:name attribute from the application tag in the manifest

edit2: use SplashApp.this.finish() instead of simply finish(), because the this there refers to the Handler.

SplashApp.java:

package com.book.activity;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import com.book.R;

public class SplashApp extends Activity
{
    private DBAdapter mDBAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
    }

    @Override
    protected void onStart()
    {
        super.onStart();
        mDBAdapter = new DBAdapter(getApplicationContext());
        try
        {
            ArrayList<BookBean> books = mDBAdapter.getAllBooks();
            if (books == null)
            {
                InputStream instream = getAssets().open("bookdata.txt");
                BufferedReader bf = new BufferedReader(new InputStreamReader(instream));
                String line;
                while ((line = bf.readLine()) != null)
                {
                    String arr[] = line.split("***");
                    for (int i = 0; i < arr.length; i++)
                    {
                        String temp[] = arr[i].split("*");
                        BookBean book = new BookBean();

                        book.setDescription((temp[0]));
                        book.setName(temp[1]);
                        book.setYearPublished(temp[2]);
                        mDBAdapter.insertBook(book);
                    }
                }
            }
            final int sec = 1;
            new Handler().postDelayed(new Runnable()
            {
                public void run()
                {
                    Intent intent = new Intent(SplashApp.this, MainMenuApp.class);
                    startActivity(intent);
                    SplashApp.this.finish();
                }
            }, sec * 1000);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

androidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.book" android:versionCode="1"
    android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />
    <application android:icon="@drawable/ic_launcher" 
        android:label="@string/app_name">
        <activity android:name=".activity.MainMenuApp" 
            android:label="@string/app_name" />
        <activity android:name=".activity.SplashApp" 
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>