Splash Screen

Android splash screen are normally used to show  some kind of progress before the application loads completely.That progress can be getting data from Sqlite database, data from internet or it can be any background process. We can use splash screen for just showing our Application logo

splashscreen.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

  // here background image should be kept under res/drawable folder

    android:background="@drawable/bishop"

    tools:context=".SplashscreenActivity" >

    <TextView

        android:id="@+id/splashtextview"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentBottom="true"

        android:layout_alignParentLeft="true"

        android:layout_marginBottom="40dp"

        android:layout_marginLeft="16dp"

        android:text="Bishop Heber"

        android:textColor="#FFFAFA"

        android:textSize="40dp" />

</RelativeLayout>

Splash Screen Activity:

package com.solomon.splashscreenexample;

import android.R.color;

import android.os.Bundle;

import android.os.Handler;

import android.app.Activity;

import android.content.Intent;

import android.graphics.Typeface;

import android.view.Menu;

import android.widget.TextView;

public class SplashscreenActivity extends Activity {

//In AndroidMainfest.xml this file should be declared as launcher Activity

//Splashscreen timer is for showing splashscreen for particular time.

private static int SPLASH_TIME_OUT=3000;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_splashscreen);

TextView splashtxt = (TextView)findViewById(R.id.splashtextview);

//Getting ttf(True type font) font style.

//Before we have to copy ttf file in assets folder

Typeface type = Typeface.createFromAsset(getAssets(), "epohistory.ttf");

// setting style to textview

splashtxt.setTypeface(type);

  new Handler().postDelayed(new Runnable(){

     /* Inside this anonymous inner class we are creating a runnable thread and 

      * overriding run method. This anonymous inner class is subclass to Handler class                               */

@Override

public void run() {

/* Creating an Intent to start another activity

 * After starting MainpageActivity  i am closing this (SplashscreenActivity) 

        * Activity.

         */

Intent i = new Intent(SplashscreenActivity.this,MainpageActivity.class);

startActivity(i);

finish();

}

      },SPLASH_TIME_OUT);

   }

}

Main Page Activity:

package com.solomon.splashscreenexample;

import android.app.Activity;

import android.os.Bundle;

import android.view.Gravity;

import android.widget.LinearLayout;

import android.widget.ScrollView;

import android.widget.TextView;

public class MainpageActivity extends Activity{

// In AndroidMainfest.xml file we should declare this Activity

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

//Creating an linearlayout and setting its orientation as Vertical

LinearLayout ll = new LinearLayout(this);

ll.setOrientation(LinearLayout.VERTICAL);

//Creating an Textview 

TextView mainpagetxt = new TextView(this);

mainpagetxt.setText("Main page TextView");

mainpagetxt.setGravity(Gravity.CENTER);

//setting textview to Linearlayout

ll.addView(mainpagetxt);

this.setContentView(ll);

}

}

AndroidMainfest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.solomon.splashscreenexample"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="19" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.solomon.splashscreenexample.SplashscreenActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

  // Here we are declaring MainpageActivity       

   <activity

            android:name="com.solomon.splashscreenexample.MainpageActivity">

          

        </activity>

    </application>

</manifest>

Output:

     This screen will appear up to 3 seconds after it will close and another Activity will open

Creating ScrollView, Layout, Textview , EditText, Button and CheckBox without using XML file

Dynamic Layouts in Android:

No xml file in this post. we can create everything using Java code except AndroidManifest.xml file. This way of creating Layout  is good comparing to xml file.

Program:

package com.solomon.imagewhex1;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.ScrollView;

import android.widget.TextView;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

ScrollView sv = new ScrollView(this); // creating a ScrollView 

LinearLayout ll = new LinearLayout(this);//creating a LinearLayout

ll.setOrientation(LinearLayout.VERTICAL);// setting LinearLayout as Vertical                                                                                                             orientation

sv.addView(ll);// setting view to scrollview

TextView tv1 = new TextView(this);// creating Textview

tv1.setText("Dynamic TextView");// Setting text to Textview

ll.addView(tv1);

EditText ed1 = new EditText(this);// creating EditText

ed1.setText("Dynamic EditText");

ll.addView(ed1);

Button b1 = new Button(this);//creating Button

b1.setText("Dynamic Buttton");//setting Text to Button

ll.addView(b1);

for(int i=0; i<20; i++){

                 //For every iteration creating a Checkbox and setting text for that Checkbox

CheckBox cb = new CheckBox(this);

cb.setText("Dynamic CheckBox");

ll.addView(cb);

}

this.setContentView(sv);// Finally adding every view to our Activity

}

}

Output: