Android API Rotaion 3d

Here the Example Extracted from API Demos

Rotation 3d

package com.dci;

import com.dci.R;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.ArrayAdapter;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;

public class Transition3d extends Activity implements
AdapterView.OnItemClickListener, View.OnClickListener
{
private ListView mPhotosList;
private ViewGroup mContainer;
private ImageView mImageView;

// Names of the photos we show in the list
private static final String[] PHOTOS_NAMES = new String[]
{
"Lyon",
"Livermore",
"Tahoe Pier",
"Lake Tahoe",
"Grand Canyon",
"Bodie"
};

// Resource identifiers for the photos we want to display
private static final int[] PHOTOS_RESOURCES = new int[]
{
R.drawable.photo1,
R.drawable.photo2,
R.drawable.photo3,
R.drawable.photo4,
R.drawable.photo5,
R.drawable.photo6
};

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);

setContentView(R.layout.animations_main_screen);

mPhotosList = (ListView) findViewById(android.R.id.list);
mImageView = (ImageView) findViewById(R.id.picture);
mContainer = (ViewGroup) findViewById(R.id.container);

// Prepare the ListView
final ArrayAdapter adapter = new ArrayAdapter(this,
android.R.layout.simple_list_item_1, PHOTOS_NAMES);

mPhotosList.setAdapter(adapter);
mPhotosList.setOnItemClickListener(this);

// Prepare the ImageView
mImageView.setClickable(true);
mImageView.setFocusable(true);
mImageView.setOnClickListener(this);

// Since we are caching large views, we want to keep their cache
// between each animation
mContainer.setPersistentDrawingCache(ViewGroup.PERSISTENT_ANIMATION_CACHE);
}

/**
* Setup a new 3D rotation on the container view.
*
* @param position the item that was clicked to show a picture, or -1 to show the list
* @param start the start angle at which the rotation must begin
* @param end the end angle of the rotation
*/
private void applyRotation(int position, float start, float end) {
// Find the center of the container
final float centerX = mContainer.getWidth() / 2.0f;
final float centerY = mContainer.getHeight() / 2.0f;

// Create a new 3D rotation with the supplied parameter
// The animation listener is used to trigger the next animation
final Rotate3dAnimation rotation =
new Rotate3dAnimation(start, end, centerX, centerY, 310.0f, true);
rotation.setDuration(500);
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
rotation.setAnimationListener(new DisplayNextView(position));

mContainer.startAnimation(rotation);
}

public void onItemClick(AdapterView parent, View v, int position, long id) {
// Pre-load the image then start the animation
mImageView.setImageResource(PHOTOS_RESOURCES[position]);
applyRotation(position, 0, 90);
}

public void onClick(View v) {
applyRotation(-1, 180, 90);
}

/**
* This class listens for the end of the first half of the animation.
* It then posts a new action that effectively swaps the views when the container
* is rotated 90 degrees and thus invisible.
*/
private final class DisplayNextView implements Animation.AnimationListener {
private final int mPosition;

private DisplayNextView(int position) {
mPosition = position;
}

public void onAnimationStart(Animation animation) {
}

public void onAnimationEnd(Animation animation) {p
mContainer.post(new SwapViews(mPosition));
}

public void onAnimationRepeat(Animation animation) {
}
}

/**
* This class is responsible for swapping the views and start the second
* half of the animation.
*/
private final class SwapViews implements Runnable
{
private final int mPosition;

public SwapViews(int position)
{
mPosition = position;
}

public void run() {
final float centerX = mContainer.getWidth() / 2.0f;
final float centerY = mContainer.getHeight() / 2.0f;
Rotate3dAnimation rotation;

if (mPosition > -1) {
mPhotosList.setVisibility(View.GONE);
mImageView.setVisibility(View.VISIBLE);
mImageView.requestFocus();

rotation = new Rotate3dAnimation(90, 180, centerX, centerY, 310.0f, false);
} else {
mImageView.setVisibility(View.GONE);
mPhotosList.setVisibility(View.VISIBLE);
mPhotosList.requestFocus();

rotation = new Rotate3dAnimation(90, 0, centerX, centerY, 310.0f, false);
}

rotation.setDuration(500);
rotation.setFillAfter(true);
rotation.setInterpolator(new DecelerateInterpolator());

mContainer.startAnimation(rotation);
}
}

}


/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.dci;

import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.graphics.Camera;
import android.graphics.Matrix;

public class Rotate3dAnimation extends Animation
{
private final float mFromDegrees;
private final float mToDegrees;
private final float mCenterX;
private final float mCenterY;
private final float mDepthZ;
private final boolean mReverse;
private Camera mCamera;

/**
* Creates a new 3D rotation on the Y axis. The rotation is defined by its
* start angle and its end angle. Both angles are in degrees. The rotation
* is performed around a center point on the 2D space, definied by a pair
* of X and Y coordinates, called centerX and centerY. When the animation
* starts, a translation on the Z axis (depth) is performed. The length
* of the translation can be specified, as well as whether the translation
* should be reversed in time.
*
* @param fromDegrees the start angle of the 3D rotation
* @param toDegrees the end angle of the 3D rotation
* @param centerX the X center of the 3D rotation
* @param centerY the Y center of the 3D rotation
* @param reverse true if the translation should be reversed, false otherwise
*/
public Rotate3dAnimation(float fromDegrees, float toDegrees,
float centerX, float centerY, float depthZ, boolean reverse)
{
mFromDegrees = fromDegrees;
mToDegrees = toDegrees;
mCenterX = centerX;
mCenterY = centerY;
mDepthZ = depthZ;
mReverse = reverse;
}

@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
}

@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = mFromDegrees;
float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);

final float centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;

final Matrix matrix = t.getMatrix();

camera.save();
if (mReverse) {
camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
} else {
camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
}
camera.rotateY(degrees);
camera.getMatrix(matrix);
camera.restore();

matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
}



Create One Folder name anim
keep the two file on to that





and save it as layout_bottom_to_top_slide.xml

and one more file




save it as slide_right.xml











save it as a animations_main_screen.xml

onKeyEvent Object Moving in Android Graphics

on Key Event Object Moving example on android

package com.dci.object;

import com.dci.object.DemoGameView.GameThread;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;

public class DemoObjectMove extends Activity
{
private static final int MENU_PAUSE = Menu.FIRST;

private static final int MENU_RESUME = Menu.FIRST + 1;

private static final int MENU_START = Menu.FIRST + 2;

private static final int MENU_STOP = Menu.FIRST + 3;

private GameThread mGameThread;

private DemoGameView mGameView;


@Override
public boolean onCreateOptionsMenu(Menu menu)
{
super.onCreateOptionsMenu(menu);

menu.add(0, MENU_START, 0, R.string.menu_start);
menu.add(0, MENU_STOP, 0, R.string.menu_stop);
menu.add(0, MENU_PAUSE, 0, R.string.menu_pause);
menu.add(0, MENU_RESUME, 0, R.string.menu_resume);

return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case MENU_START:
mGameThread.doStart();
return true;
case MENU_STOP:
mGameThread.setState(GameThread.STATE_LOSE);
return true;
case MENU_PAUSE:
mGameThread.pause();
return true;
case MENU_RESUME:
mGameThread.unpause();
return true;
}

return false;
}

/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);


requestWindowFeature(Window.FEATURE_NO_TITLE);


setContentView(R.layout.main);

mGameView =(DemoGameView) findViewById(R.id.game);
mGameThread = mGameView.getThread();

mGameThread.setState(GameThread.STATE_READY);
}

@Override
protected void onPause()
{
super.onPause();

mGameView.getThread().pause();

}
}


View For the Above activity


package com.dci.object;

import com.dci.object.R;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class DemoGameView extends SurfaceView implements SurfaceHolder.Callback
{

class GameThread extends Thread
{
// States Used In Our Demo Game Object

public static final int STATE_LOSE = 1;
public static final int STATE_PAUSE = 2;
public static final int STATE_READY = 3;
public static final int STATE_RUNNING = 4;
public static final int STATE_WIN = 5;

private int mMode;
private boolean mRun = false;

// Co ordinates

private float x;
private float y;

// To control the Speed the Variable is craeted
private static final int SPEED = 100;

//Movements of the Object Variables
private boolean dRight;
private boolean dLeft;
private boolean dUp;
private boolean dDown;

// Canvas Specs.
private int mCanvasWidth;
private int mCanvasHeight;

private long mLastTime;

private Bitmap mDciObject;

private SurfaceHolder mSurfaceHolder;

//Constructor
public GameThread(SurfaceHolder surfaceHolder, Context context,
Handler handler)
{
mSurfaceHolder = surfaceHolder;
mContext = context;

x = 0;
y = 0;

mDciObject = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.snowflake);

}
//Start The Game
public void doStart()
{
synchronized (mSurfaceHolder)
{
// Initialize game here!

x = 0;
y = 50;

mLastTime = System.currentTimeMillis() + 100;
setState(STATE_RUNNING);
}
}
public void pause()
{
synchronized (mSurfaceHolder)
{
if (mMode == STATE_RUNNING)
setState(STATE_PAUSE);
}
}

@Override
public void run()
{
while (mRun)
{
Canvas c = null;
try
{
c = mSurfaceHolder.lockCanvas(null);
synchronized (mSurfaceHolder)
{
if (mMode == STATE_RUNNING)
updateGame();
doDraw(c);
}
}
finally
{
if (c != null)
{
mSurfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
public void setRunning(boolean b)
{
mRun = b;
}
public void setState(int mode)
{
synchronized (mSurfaceHolder)
{
setState(mode, null);
}
}
public void setState(int mode, CharSequence message)
{
synchronized (mSurfaceHolder)
{
mMode = mode;
}
}
public void setSurfaceSize(int width, int height)
{

synchronized (mSurfaceHolder)
{
mCanvasWidth = width;
mCanvasHeight = height;
}
}
public void unpause()
{
// Move the real time clock up to now
synchronized (mSurfaceHolder)
{
mLastTime = System.currentTimeMillis() + 100;
}
setState(STATE_RUNNING);
}

boolean doKeyDown(int keyCode, KeyEvent msg)
{
boolean handled = false;
synchronized (mSurfaceHolder)
{
if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT)
{
dRight = true;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT)
{
dLeft = true;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_UP)
{
dUp = true;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN)
{
dDown = true;
handled = true;
}
return handled;
}
}
boolean doKeyUp(int keyCode, KeyEvent msg)
{
boolean handled = false;
synchronized (mSurfaceHolder)
{
if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT)
{
dRight = false;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT)
{
dLeft = false;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_UP)
{
dUp = false;
handled = true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN)
{
dDown = false;
handled = true;
}
return handled;
}
}
private void doDraw(Canvas canvas)
{
// empty canvas
canvas.drawARGB(255,0,0,40);

canvas.drawBitmap(mDciObject, x, y, new Paint());
}

private void updateGame()
{

long now = System.currentTimeMillis();

if (mLastTime > now)
return;
double elapsed = (now - mLastTime) / 1000.0;
mLastTime = now;


if (dUp)
y -= elapsed * SPEED;
if (dDown)
y += elapsed * SPEED;
if (y < 0)
y = 0;
else if (y >= mCanvasHeight - mDciObject.getHeight())
y = mCanvasHeight - mDciObject.getHeight();
if (dLeft)
x -= elapsed * SPEED;
if (dRight)
x += elapsed * SPEED;
if (x < 0)
x = 0;
else if (x >= mCanvasWidth - mDciObject.getWidth())
x = mCanvasWidth - mDciObject.getWidth();
}
}
private Context mContext;

private GameThread thread;

public DemoGameView(Context context,AttributeSet atts)
{
super(context,atts);

SurfaceHolder holder = getHolder();
holder.addCallback(this);

thread = new GameThread(holder, context, new Handler()
{
@Override
public void handleMessage(Message m)
{
// Use for pushing back messages.
}
});

setFocusable(true);

}
public GameThread getThread()
{
return thread;
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent msg)
{
return thread.doKeyDown(keyCode, msg);
}

@Override
public boolean onKeyUp(int keyCode, KeyEvent msg)
{
return thread.doKeyUp(keyCode, msg);
}

@Override
public void onWindowFocusChanged(boolean hasWindowFocus)
{
if (!hasWindowFocus)
thread.pause();
}


public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height)
{
thread.setSurfaceSize(width, height);
}


public void surfaceCreated(SurfaceHolder holder)
{

thread.setRunning(true);
thread.start();
}
public void surfaceDestroyed(SurfaceHolder holder)
{

boolean retry = true;
thread.setRunning(false);
while (retry)
{
try
{
thread.join();
retry = false;
}
catch (InterruptedException e)
{
}
}
}

}

Android Graphics Tutorial

How To draw a circle in android?

Follow the Steps U will get how to a draw a circle .........

These is the NewCircle Activity Class

package com.android;

import android.app.Activity;
import android.os.Bundle;

public class NewCircle extends Activity
{


/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(new CircleView(this, 25, 25, 20));

}
}



This is the Circle View Class


package com.android;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.View;

public class CircleView extends View
{

// Variables
private final float x;
private final float y;
private final int r;
private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);

// Constructor
public CircleView(Context context, float x, float y, int r) {
super(context);
mPaint.setColor(0xFFFF0000);
this.x = x;
this.y = y;
this.r = r;
}

/ canvas onDraw Method for drawing a circle

@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
canvas.drawCircle(x, y, r, mPaint);
}
}