Tuesday, January 31, 2012

Tween animation: rotate

Implement tween animation of rotating

Rotate around center
Rotate around corner


Create /res/anim/rotate_center.xml for animation of rotating around center
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator">
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:duration="2000"
android:startOffset="0"/>
</set>


Create /res/anim/rotate_corner.xml for animation of rotating around the upper-left corner
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator">
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="0%"
android:pivotY="0%"
android:duration="2000"
android:startOffset="0"/>
</set>


main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/rotatecenter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Rotate around center"/>
<Button
android:id="@+id/rotatecorner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Rotate around corner"/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="center">

<ImageView
android:id="@+id/floatingimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

</LinearLayout>

</LinearLayout>


main activity
package com.exercise.AndroidAnimTranslate;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;

public class AndroidAnimTranslateActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

Button buttonRotateCenter = (Button)findViewById(R.id.rotatecenter);
Button buttonRotateCorner = (Button)findViewById(R.id.rotatecorner);
final ImageView floatingImage = (ImageView)findViewById(R.id.floatingimage);

final Animation animationRotateCenter = AnimationUtils.loadAnimation(this, R.anim.rotate_center);
buttonRotateCenter.setOnClickListener(new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
floatingImage.startAnimation(animationRotateCenter);
}});

final Animation animationRotateCorner = AnimationUtils.loadAnimation(this, R.anim.rotate_corner);
buttonRotateCorner.setOnClickListener(new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
floatingImage.startAnimation(animationRotateCorner);
}});
}
}


Download the files.

Related article:
- Animate falling action using Animation of translate
- Animate Fade In/Fade Out by changing Alpha
- Animation of Scale

5 comments:

Morteza05 said...
This comment has been removed by the author.
Morteza05 said...
This comment has been removed by the author.
Morteza05 said...
This comment has been removed by the author.
F.T said...

The app is very needed but I think there is a problem occurs in downloading the app.
netduino

Morteza05 said...

hello
i can not download this tutorial(
A simple example using Android's SQLite database, exposes data from Cursor to a ListView) because link
this file filter in my country.
can you send this file or all tutorial file in my email(s302030@yahoo.com)please
Thank you