Android Switch between activities

Question

what i'm trying to do is a home screen that stays for 5 seconds and goes to activity1.When i click a button in activity1 leads me to activity2.I've tried many times to click the button but no switching happens. homescreen (5 seconds)=Main_Activity Activity1=selectpets.java Activity2=fishtank.java

onclick listener seems the problem i don't know what's wrong with it

     Main Activity Code
package com.set.petshome;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
    Button fButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //Delay Code after 5 seconds
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                setContentView(R.layout.selectscreen); //where <next> is you target      activity :)
                }
            }, 5000);   
    }
//Delay End
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

Now the Selectpets Code

package com.set.petshome;

import android.app.Activity;
import android.content.*;
import android.os.Bundle;
import android.view.*;
import android.widget.Button;
public class SelectPetsScreen extends Activity  {
    Button fButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.selectscreen);

      //Button Fishtank Listener Start

        fButton = (Button) findViewById(R.id.button1);

          //Listening to button event
           fButton.setOnClickListener(new View.OnClickListener() {

                public void onClick(View arg0) {
                    //Starting a new Intent
                    Intent nextScreen = new Intent(getApplicationContext(),  fishtank.class);
                    startActivity(nextScreen);

                }
            });     
        //Button Fishtank Listener End

    }
   }

Fishtank class code

package com.set.petshome;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

    public class fishtank extends Activity {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.ftank);



        }

    }

by the way no errors in the application just no switching after clicking
thank you very much

Answer 1

Here you aren't ever switching to the next Activity, just changing the layout of the current Activity

 new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                setContentView(R.layout.selectscreen); //where <next> is you target      activity :)
                }
            }, 5000);  

instead of setContentView() you need to use an Intent

Intent i = new Intent(MainActivity.this, SelectPetsScreen.this);
startActivity(i);

Since you aren't actually going to the next Activity (java file) your onClick() isn't set.

Edit

This is what you are doing

public class MainActivity extends Activity {
Button fButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //Delay Code after 5 seconds
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            setContentView(R.layout.selectscreen); //where <next> is you target      activity :)
            }
        }, 5000);   
}

This is what you should be doing. Notice the difference in the run() function

public class MainActivity extends Activity {
Button fButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //Delay Code after 5 seconds
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            Intent i = new Intent(MainActivity.this, SelectPetsScreen.this);
            startActivity(i);
            }
        }, 5000);   
}

Answer 2

You can use finish() if you want use firts Activity only once.

mHandler.postDelayed(new Runnable() {
    @Override
    public void run() {

 startActivity(new Intent().setClass(MainActivity.this, SelectPetsScreen .class).setData(getIntent().getData()));
        finish();
    }
}, 5000);

Be sure that you have 2nd Activity defined in your Manifest.xml:

<activity android:name="x.x.SelectPetsScreen"
        android:theme="@style/NoTitle"
        android:screenOrientation="nosensor"
        android:launchMode="singleTask">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
        </intent-filter>
    </activity>