ViewFlipper - Android Studio Tutorial Example PDF

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In this video we will learn how to use the ViewFlipper widget, which is a subclass of ViewAnimator and makes it easy to switch between different views at

runtime. We can set animations on it either in XML with android:inAnimation and android:o utAnimation or in Java code with setInAnimation and setOutAnimation.

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With showPrevious and showNext we can flip between views, or alternatively we can let the ViewFlipper switch views automatically either by calling startFlipping after setting an interval with setFlipInterval, or by setting autoStart to true.

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With addView we can add dynamically created views to the ViewFlipper in Java code, like a TextView for example.

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.kotalipara.viewflipperexample.MainActivity">     <ViewFlipper        android:id="@+id/view_flipper"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:inAnimation="@android:anim/slide_in_left"        android:outAnimation="@android:anim/slide_out_right">         <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:text="Button" />         <ImageView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:src="@mipmap/ic_launcher" />         <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:orientation="vertical">             <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="TextView1"                android:textSize="20sp" />             <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="TextView2"                android:textSize="20sp" />             <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="TextView3"                android:textSize="20sp" />         </LinearLayout>     </ViewFlipper>     <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_alignParentStart="true"        android:layout_margin="16dp"        android:onClick="previousView"        android:text="Previous" />     <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_alignParentEnd="true"        android:layout_margin="16dp"        android:onClick="nextView"        android:text="Next" /> </RelativeLayout>

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MainActivity.java

package com.kotalipara.viewflipperexample; import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.widget.TextView;import android.widget.ViewFlipper; public class MainActivity extends AppCompatActivity {    private ViewFlipper viewFlipper;     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);         viewFlipper = findViewById(R.id.view_flipper);        TextView textView = new TextView(this);        textView.setText("Dynamically added TextView");        textView.setGravity(Gravity.CENTER);         viewFlipper.addView(textView);         viewFlipper.setFlipInterval(2000);        viewFlipper.startFlipping();    }     public void previousView(View v) {        viewFlipper.setInAnimation(this, R.anim.slide_in_right);        viewFlipper.setOutAnimation(this, R.anim.slide_out_left);        viewFlipper.showPrevious();    }     public void nextView(View v) {        viewFlipper.setInAnimation(this, android.R.anim.slide_in_left);        viewFlipper.setOutAnimation(this, android.R.anim.slide_out_right);        viewFlipper.showNext();    }}

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slide_in_right.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate        android:duration="@android:integer/config_mediumAnimTime"        android:fromXDelta="50%p"        android:toXDelta="0" />    <alpha        android:duration="@android:integer/config_mediumAnimTime"        android:fromAlpha="0.0"        android:toAlpha="1.0" /></set>

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slide_out_left.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate        android:duration="@android:integer/config_mediumAnimTime"        android:fromXDelta="0"        android:toXDelta="-50%p" />    <alpha        android:duration="@android:integer/config_mediumAnimTime"        android:fromAlpha="1.0"        android:toAlpha="0.0" /></set>

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