Develop Reference

Smooth Scroll to Custom View in Android

i am creating custom view extending surfaceview. View is Used to Display Video thumbs horizontally and is used as timeline of video. i want to add smooth scrolling to this custom view. i have tried fling animation class from androidx
https://developer.android.com/guide/topics/graphics/fling-animation
but thisis used to scroll whole view. and using this fling view just graphically view is animating but its value remains the same. alternatively i have tried to use gesture listener but ufotunatilly. not worked can any one guide me in this matter.
what actually i want smooth scrolling
what actually working
public class TimelineView extends SurfaceView
touchmove Evvent method
f2 = ((float) this.timeFullWidth) / ((float) this.viewWidth);
j2 = this.startTouchTime - ((long) (f2 * (f - this.startTouch.x)));
this.currentTime = j2;
if (j2 < mediaList.get(0).getStartTrim()) {
this.currentTime = glitchCamEditorMediaList.get(0).getStartTrim();
}
if (j2 > mediaList.get(0).getEndTrim()) {
this.currentTime = glitchCamEditorMediaList.get(0).getEndTrim();
}
============================================================================
public void onDraw(Canvas canvas) {
int i = 0;
for (Media media: this.mediaList) {
long j = this.currentTime;
int i2 = this.timeFullWidth;
long j2 = j - ((long) (i2 / 2));
if (media.getStartTimeLine() < j + ((long) (i2 / 2)) && media.getEndTrim() > j2) {
drawCard(canvas, media);
}
i++;
}
}

PDFJet-Open-source: How to set multiline text inside Cell object

I use PDFJet-Open-Source library to construct a pdf. So, I have couple of questions:
1) How can I place the multiline text inside Cell?
Problem description: Currently I faced with problem that I can't place the multiline text inside Cell object. I tried set text like "text1 \n text2..." but it does not have any effect. Unfortunatelly, open source version does not have TextColumn and Paragraph classes.
2) What is the CompositeTextLine and how to use it?
Problem description: Perhaps I have wrong imagination, but I tried to do the following:
...
CompositeTextLine ctl = new CompositTextLine(0,0);
ctl.addComponent(new TextLine(f1,"MyText1"));
ctl.addComponent(new TextLine(f1,"MyText2"));
ctl.addComponent(new TextLine(f1,"MyText3"));
Cell cell = new Cell(f1);
cell.setCompositeTextLine(ctl);
...
I expected to see several multiple lines in the Cell but I observed nothing. Moreover, if I add the line table.wrapAroundCellText(), I've got NullPointerException. If I call ctl.drawOn(page), I just observe: "MyText1 MyText2 MyText3" without line breaking.
UPDATE: I discovered the TextBox class, so that, if I write:
TextBox textbox = new TextBox(f1);
textbox.setText("First Line \n Second Line");
textbox.drawOn(page);
it will construct what I want:
First Line
Second Line
But still I am interested with the possibility of (1) and description of (2) and some of them variations, like to "How to set TextBox (or image etc.) inside Cell, not only single line?"
And last one, could anyone, please, refer me to the realization of "text justification" algorithm in Java or C++.

I can across the same problem, and I ended up extending Cell, and using WordUtils from apache commons lang3:
public class MultilineCell extends Cell {
private final int characterCount;
public MultilineCell(Font font, String content, int characterCount) {
super(font, content);
this.characterCount = characterCount;
}
#Override
public String getText() {
return WrapUtil.wrap(super.getText(), this.characterCount);
}
#Override
public float getHeight() {
float height = this.font.getBodyHeight();
String text = getText();
if (text != null) {
String[] wrappedTexts = text.split(System.getProperty("line.separator"));
if (wrappedTexts.length > 1) {
return (height * wrappedTexts.length) + this.top_padding + this.bottom_padding;
}
}
return height + this.top_padding + this.bottom_padding;
}
#Override
protected void paint(Page page, float x, float y, float w, float h) throws Exception {
page.setPenColor(this.getPenColor());
page.setPenWidth(this.lineWidth);
drawBorders(page, x, y, w, h);
drawText(page, x, y, w);
}
private void drawBorders(
Page page,
float x,
float y,
float cell_w,
float cell_h) throws Exception {
if (getBorder(Border.TOP) &&
getBorder(Border.BOTTOM) &&
getBorder(Border.LEFT) &&
getBorder(Border.RIGHT)) {
page.drawRect(x, y, cell_w, cell_h);
}
else {
if (getBorder(Border.TOP)) {
page.moveTo(x, y);
page.lineTo(x + cell_w, y);
page.strokePath();
}
if (getBorder(Border.BOTTOM)) {
page.moveTo(x, y + cell_h);
page.lineTo(x + cell_w, y + cell_h);
page.strokePath();
}
if (getBorder(Border.LEFT)) {
page.moveTo(x, y);
page.lineTo(x, y + cell_h);
page.strokePath();
}
if (getBorder(Border.RIGHT)) {
page.moveTo(x + cell_w, y);
page.lineTo(x + cell_w, y + cell_h);
page.strokePath();
}
}
}
private void drawText(
Page page,
float x,
float y,
float cell_w) throws IOException {
String wrappedText = WrapUtil.wrap(super.getText(), this.characterCount);
String[] lines = wrappedText.split(System.getProperty("line.separator"));
float x_text = x + this.left_padding;
float y_text = y + this.font.getAscent() + this.top_padding;
for (String line : lines) {
page.drawString(this.font, line, x_text, y_text);
y_text += this.font.getBodyHeight();
}
}
}
You can instantiate and add the MultilineCell as you would with a Cell:
List<Cell> rowCells = new ArrayList<Cell>();
rowCells.add(new MultilineCell(font, c.getString(reasonIdx), 42));
I know that extension is not a nice solution, and copying drawBorders() is even worse, but in this case, it is the only solution if you don't want to fork PDFJet.
This however breaks autoAdjustColumnWidths: the width is calculated on the whole text, instead of the longest line. So if you intend to use this method, either subclass Table, fork PDFJet, or extract just this method (the only downside of the latter is that I couldn't work around the cell padding though):
/**
* Auto adjusts the widths of all columns so that they are just wide enough to hold the text without truncation.
*/
private static void autoAdjustColumnWidths(List<List<Cell>> tableData) {
// Find the maximum text width for each column
float[] max_col_widths = new float[tableData.get(0).size()];
for (int i = 0; i < tableData.size(); i++) {
List<Cell> row = tableData.get(i);
for (int j = 0; j < row.size(); j++) {
Cell cell = row.get(j);
if (cell.getColSpan() == 1) {
float cellWidth = 0f;
if (cell.getImage() != null) {
cellWidth = cell.getImage().getWidth();
}
if (cell.getText() != null) {
// Is this a multiline cell? If so, measure the widest line
if (cell.getText().contains(MultilineCell.NEW_LINE)) {
String[] lines = cell.getText().split(MultilineCell.NEW_LINE);
for (String line : lines) {
if (cell.getFont().stringWidth(cell.getFallbackFont(), line) > cellWidth) {
cellWidth = cell.getFont().stringWidth(cell.getFallbackFont(), line);
}
}
}
// Standard (single-line) cell, measure whole text
else {
if (cell.getFont().stringWidth(cell.getFallbackFont(), cell.getText()) > cellWidth) {
cellWidth = cell.getFont().stringWidth(cell.getFallbackFont(), cell.getText());
}
}
}
cell.setWidth(cellWidth + 2f /*cell.left_padding*/ + 2f/*cell.right_padding*/);
if (max_col_widths[j] == 0f ||
cell.getWidth() > max_col_widths[j]) {
max_col_widths[j] = cell.getWidth();
}
}
}
}
for (int i = 0; i < tableData.size(); i++) {
List<Cell> row = tableData.get(i);
for (int j = 0; j < row.size(); j++) {
Cell cell = row.get(j);
cell.setWidth(max_col_widths[j]);
}
}
}
PDFJet is a funny library, btw: protected fields, every other method throws Exception, and the classes are definitely not designed for extension, even if there're not final.

There is a tricky solution for that:
As suggested before split your input into several lines (using for example using WordUtils from apache commons lang3)
String wrappedText = WrapUtil.wrap(super.getText(), this.characterCount);
String[] lines = wrappedText.split(System.getProperty("line.separator"));
After you have your lines, add as many rows as lines into your table with those separate lines.
To simulate "multiline cell" call function removeLineBetweenRows providing index of those added rows. It will look like a one big cell.

how to calculate exact foot step count using accelerometer in android?

I am developing some application like Runtastic Pedometer using the algorithm but I am not getting any similarity between the results.
my code is as follows:
public void onSensorChanged(SensorEvent event)
{
Sensor sensor = event.sensor;
synchronized (this)
{
if (sensor.getType() == Sensor.TYPE_ORIENTATION) {}
else {
int j = (sensor.getType() == Sensor.TYPE_ACCELEROMETER) ? 1 : 0;
if (j == 1) {
float vSum = 0;
for (int i=0 ; i<3 ; i++) {
final float v = mYOffset + event.values[i] * mScale[j];
vSum += v;
}
int k = 0;
float v = vSum / 3;
//Log.e("data", "data"+v);
float direction = (v > mLastValues[k] ? 1 : (v < mLastValues[k] ? -1 : 0));
if (direction == - mLastDirections[k]) {
// Direction changed
int extType = (direction > 0 ? 0 : 1); // minumum or maximum?
mLastExtremes[extType][k] = mLastValues[k];
float diff = Math.abs(mLastExtremes[extType][k] - mLastExtremes[1 - extType][k]);
if (diff > mLimit) {
boolean isAlmostAsLargeAsPrevious = diff > (mLastDiff[k]*2/3);
boolean isPreviousLargeEnough = mLastDiff[k] > (diff/3);
boolean isNotContra = (mLastMatch != 1 - extType);
if (isAlmostAsLargeAsPrevious && isPreviousLargeEnough && isNotContra) {
for (StepListener stepListener : mStepListeners) {
stepListener.onStep();
}
mLastMatch = extType;
}
else {
Log.i(TAG, "no step");
mLastMatch = -1;
}
}
mLastDiff[k] = diff;
}
mLastDirections[k] = direction;
mLastValues[k] = v;
}
}
}
}
for registering sensors:
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
mSensor = mSensorManager.getDefaultSensor(
Sensor.TYPE_ACCELEROMETER);
mSensorManager.registerListener(mStepDetector,mSensor,SensorManager.SENSOR_DELAY_NORMAL);
in the algorithm i have different levels for sensitivity as public void
setSensitivity(float sensitivity) {
mLimit = sensitivity; // 1.97 2.96 4.44 6.66 10.00 15.00 22.50 33.75 50.62
}
on various sensitivity level my result is:
sensitivity rantastic pedometer my app
10.00 3870 5500
11.00 3000 4000
11.15 3765 4576
13.00 2000 890
11.30 754 986
I am not getting any proper pattern to match with the requirement.
As per my analysis this application is using Sensor.TYPE_MAGNETIC_FIELD for steps calculation please let me know some algorithm so that I can meet with the requirement.

The first thing you need to do is decide on an algorithm. As far as I know there are roughly speaking three ways to detect steps using accelerometers that are described in the literature:
Use the Pythagorean theorem to calculate the magnitude of the acceleration vector of each sample from the accelerometer. Low-pass filter the magnitude signal to remove high frequency noise and then look for peaks and valleys in the filtered signal. You may need to add additional requirements to remove false positives. This is by far the simplest way to detect steps, it is also the way that most if not all ordinary pedometers of the sort that you can buy from a sports store work.
Use Pythagoras' like in (1), then run the signal through an FFT and compare the output from the FFT to known outputs of walking. This requires you to have access to a fairly large amount of training data.
Feed the accelerometer data into an algorithm that uses some suitable machine learning technique, for example a neural network or a digital wavelet transform. You can of course include other sensors in this approach. This also requires you to have access to a fairly large amount of training data.
Once you have decided on an algorithm you will probably want to use something like Matlab or SciPy to test your algorithm on your computer using recordings that you have made on Android phones. Dump accelerometer data to a cvs file on your phone, make a record of how many steps the file represents, copy the file to your computer and run your algorithm on the data to see if it gets the step count right. That way you can detect problems with the algorithm and correct them.
If this sounds difficult, then the best way to get access to good step detection is probably to wait until more phones come with the built-in step counter that KitKat enables.

https://github.com/bagilevi/android-pedometer
i hope this might be helpfull

I am using step detection in my walking instrument.
I get nice results of step detection.
I use achartengine to plot accelerometer data.
Take a look here.
What I do:
Analysis of magnitude vector for accelerometer sensor.
Setting a changeable threshold level. When signal from accelerometer is above it I count it as a step.
Setting the time of inactive state (for step detection) after first crossing of the threshold.
Point 3. is calculated:
arbitrary setting the maximum tempo of our walking (e.g. 120bpm)
if 60bpm - 1000msec per step, then 120bpm - 500msec per step
accelerometer passes data with certain desired frequency (SENSOR_DELAY_NORMAL, SENSOR_DELAY_GAME, etc.). When DELAY_GAME: T ~= 20ms (this is included in Android documentation)
n - samples to omit (after passing the threshold)
n = 500msec / T
n = 500 / 20 = 25 (plenty of them. You can adjust this value).
after that, the threshold becomes active.
Take a look at this picture:

This is my realization. It was written about 1.5-2 years ago. And I really don't remember all this stuff that I wrote. But it worked. And it worked good for my needs.
I know that this is really big class (some methods are deleted), but may be it will be helpful. If not, I'll just remove this answer...
public class StepDetector implements SensorEventListener
{
public static final int MAX_BUFFER_SIZE = 5;
private static final int Y_DATA_COUNT = 4;
private static final double MIN_GRAVITY = 2;
private static final double MAX_GRAVITY = 1200;
public void onSensorChanged(final SensorEvent sensorEvent)
{
final float[] values = sensorEvent.values;
final Sensor sensor = sensorEvent.sensor;
if (sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD)
{
magneticDetector(values, sensorEvent.timestamp / (500 * 10 ^ 6l));
}
if (sensor.getType() == Sensor.TYPE_ACCELEROMETER)
{
accelDetector(values, sensorEvent.timestamp / (500 * 10 ^ 6l));
}
}
private ArrayList<float[]> mAccelDataBuffer = new ArrayList<float[]>();
private ArrayList<Long> mMagneticFireData = new ArrayList<Long>();
private Long mLastStepTime = null;
private ArrayList<Pair> mAccelFireData = new ArrayList<Pair>();
private void accelDetector(float[] detectedValues, long timeStamp)
{
float[] currentValues = new float[3];
for (int i = 0; i < currentValues.length; ++i)
{
currentValues[i] = detectedValues[i];
}
mAccelDataBuffer.add(currentValues);
if (mAccelDataBuffer.size() > StepDetector.MAX_BUFFER_SIZE)
{
double avgGravity = 0;
for (float[] values : mAccelDataBuffer)
{
avgGravity += Math.abs(Math.sqrt(
values[0] * values[0] + values[1] * values[1] + values[2] * values[2]) - SensorManager.STANDARD_GRAVITY);
}
avgGravity /= mAccelDataBuffer.size();
if (avgGravity >= MIN_GRAVITY && avgGravity < MAX_GRAVITY)
{
mAccelFireData.add(new Pair(timeStamp, true));
}
else
{
mAccelFireData.add(new Pair(timeStamp, false));
}
if (mAccelFireData.size() >= Y_DATA_COUNT)
{
checkData(mAccelFireData, timeStamp);
mAccelFireData.remove(0);
}
mAccelDataBuffer.clear();
}
}
private void checkData(ArrayList<Pair> accelFireData, long timeStamp)
{
boolean stepAlreadyDetected = false;
Iterator<Pair> iterator = accelFireData.iterator();
while (iterator.hasNext() && !stepAlreadyDetected)
{
stepAlreadyDetected = iterator.next().first.equals(mLastStepTime);
}
if (!stepAlreadyDetected)
{
int firstPosition = Collections.binarySearch(mMagneticFireData, accelFireData.get(0).first);
int secondPosition = Collections
.binarySearch(mMagneticFireData, accelFireData.get(accelFireData.size() - 1).first - 1);
if (firstPosition > 0 || secondPosition > 0 || firstPosition != secondPosition)
{
if (firstPosition < 0)
{
firstPosition = -firstPosition - 1;
}
if (firstPosition < mMagneticFireData.size() && firstPosition > 0)
{
mMagneticFireData = new ArrayList<Long>(
mMagneticFireData.subList(firstPosition - 1, mMagneticFireData.size()));
}
iterator = accelFireData.iterator();
while (iterator.hasNext())
{
if (iterator.next().second)
{
mLastStepTime = timeStamp;
accelFireData.remove(accelFireData.size() - 1);
accelFireData.add(new Pair(timeStamp, false));
onStep();
break;
}
}
}
}
}
private float mLastDirections;
private float mLastValues;
private float mLastExtremes[] = new float[2];
private Integer mLastType;
private ArrayList<Float> mMagneticDataBuffer = new ArrayList<Float>();
private void magneticDetector(float[] values, long timeStamp)
{
mMagneticDataBuffer.add(values[2]);
if (mMagneticDataBuffer.size() > StepDetector.MAX_BUFFER_SIZE)
{
float avg = 0;
for (int i = 0; i < mMagneticDataBuffer.size(); ++i)
{
avg += mMagneticDataBuffer.get(i);
}
avg /= mMagneticDataBuffer.size();
float direction = (avg > mLastValues ? 1 : (avg < mLastValues ? -1 : 0));
if (direction == -mLastDirections)
{
// Direction changed
int extType = (direction > 0 ? 0 : 1); // minumum or maximum?
mLastExtremes[extType] = mLastValues;
float diff = Math.abs(mLastExtremes[extType] - mLastExtremes[1 - extType]);
if (diff > 8 && (null == mLastType || mLastType != extType))
{
mLastType = extType;
mMagneticFireData.add(timeStamp);
}
}
mLastDirections = direction;
mLastValues = avg;
mMagneticDataBuffer.clear();
}
}
public static class Pair implements Serializable
{
Long first;
boolean second;
public Pair(long first, boolean second)
{
this.first = first;
this.second = second;
}
#Override
public boolean equals(Object o)
{
if (o instanceof Pair)
{
return first.equals(((Pair) o).first);
}
return false;
}
}
}

One main difference I spotted between your implementation and the code in the grepcode project is the way you register the listener.
Your code:
mSensorManager.registerListener(mStepDetector,
mSensor,
SensorManager.SENSOR_DELAY_NORMAL);
Their code:
mSensorManager.registerListener(mStepDetector,
mSensor,
SensorManager.SENSOR_DELAY_FASTEST);
This is a big difference. SENSOR_DELAY_NORMAL is intended for orientation changes, and is therefor not that fast (ever noticed that it takes some time between you rotating the device, and the device actually rotating? That's because this is some functionality that does not need to be super fast (that would probably be pretty annoying even). The rate at which you get updates is not that high).
On the other hand, SENSOR_DELAY_FASTEST is intended for things like pedometers: you want the sensor data as fast and often as possible, so your calculations of steps will be as accurate as possible.
Try to switch to the SENSOR_DELAY_FASTEST rate, and test again! It should make a big difference.

public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType()==Sensor.TYPE_ACCELEROMETER ){
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
currentvectorSum = (x*x + y*y + z*z);
if(currentvectorSum < 100 && inStep==false){
inStep = true;
}
if(currentvectorSum > 125 && inStep==true){
inStep = false;
numSteps++;
Log.d("TAG_ACCELEROMETER", "\t" + numSteps);
}
}
}

detect move event by index pointer in android

I am working on a multitouch program that needs to record only the movements made by the second finger or index pointer.
Now the documentation says that we can use MotionEvent.ACTION_POINTER_INDEX_MASK and & it with action and shift by INDEX_SHIFT to get the pointer that made the action like going up or down. But this technique does not work on move.
Is there anyway that we can detect the move action made by a certain pointer alone?
Thx,

yes, you can have something like this in your View class:
#Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_MOVE:
if(event.getPointerCount()>1){
//where 1 is the index of the second finger
final int Y = event.getY(1);
final int X = event.getX(1);
}
break;
}
}
so depending on what finger you want to get the movent you can set the get to that index. Rember that values may be from 0 (the first pointer that is down) to getPointerCount()-1.
I tested this on 2.2 Gingerbread so I hope it be useful for you :)

You can get the effective pointer index by checking which pointer changed:
private final int MAX_POINTER = 5; // 5 different touch pointers supported on most devices
private float mLastTouchPositionX[];
private float mLastTouchPositionY[];
#Override
public boolean onTouchEvent(MotionEvent aEvent)
int tActionIndex = aEvent.getActionIndex();
int tPointerCount = aEvent.getPointerCount();
/*
* Check which pointer changed on move
*/
if (tMaskedAction == MotionEvent.ACTION_MOVE) {
for (int i = 0; i < tPointerCount && i < MAX_POINTER; i++) {
if (mLastTouchPositionX[i] != aEvent.getX(i) || mLastTouchPositionY[i] != aEvent.getY(i)) {
mLastTouchPositionX[i] = aEvent.getX(i);
mLastTouchPositionY[i] = aEvent.getY(i);
// Found new action index
tActionIndex = i;
break;
}
}
}
...
}

Android - Moving a single image

Can anyone help please.
Im writing a small Android game where the player is able to select a "barrier" and drag it accross the screen with their finger. I have the barriers drawn on the screen and I am able to drag it accross the screen.
My problem however is when I add more than 1 barrier, eg 3 barriers, and drag a barrier accross the screen, they all drag and they all drag to the same position. That is to say they all lie on top of each other, making it look as though there is only 1 barrier.
Here is my code, can anyone please tell me where I am going wrong/explain where I am going wrong.
public class MainGamePanel extends SurfaceView implements SurfaceHolder.Callback, SensorEventListener {
// Initialising the Barrier
private Barrier barrier[] = new Barrier[3];
// The Main Game Panel
public MainGamePanel(Context context) {
super(context);
// Adding a call-back (this) to the surfaceHolder to intercept events
getHolder().addCallback(this);
// Creating the Game items
// The starting coordinates of the Barrier
int x = 30;
int y = 270;
barrier[0] = new Barrier(BitmapFactory.decodeResource(getResources(), R.drawable.blue_barrier), x, y);
barrier[1] = new Barrier(BitmapFactory.decodeResource(getResources(), R.drawable.green_barrier), x + 15, y);
barrier[2] = new Barrier(BitmapFactory.decodeResource(getResources(), R.drawable.pink_barrier), x + 30, y);
// Create the Game Loop Thread
thread = new MainThread(getHolder(), this);
// Make the GamePanel focusable so it can handle events
setFocusable(true);
}
// Handles the touch events
public boolean onTouchEvent(MotionEvent event)
{
int eventAction = event.getAction();
int x = (int)event.getX();
int y = (int)event.getY();
switch (eventAction)
{
// Touch down so check if finger is on Barrier
case MotionEvent.ACTION_DOWN:
if (x > barrier[0].getX() && x < barrier[0].getX() + 8
&& y > barrier[0].getX() && y < barrier[0].getY() + 8)
{
barrier[0].isTouched();
}
else if (x > barrier[1].getX() && x < barrier[1].getX() + 8
&& y > barrier[1].getX() && y < barrier[1].getY() + 8)
{
barrier[1].isTouched();
}
else if (x > barrier[2].getX() && x < barrier[2].getX() + 8
&& y > barrier[2].getX() && y < barrier[2].getY() + 8)
{
barrier[2].isTouched();
}
break;
// Touch-drag with the Barrier
case MotionEvent.ACTION_MOVE:
// Move the Barrier the same as the finger
for (int i = 0; i < barrier.length; i++)
{
if (barrier[i] == barrier[0])
{
barrier[0].setX(x);
barrier[0].setY(y);
} // end if
else if (barrier[i] == barrier[1])
{
barrier[1].setX(x);
barrier[1].setY(y);
}
else if (barrier[i] == barrier[2])
{
barrier[2].setX(x);
barrier[2].setY(y);
} // end else if
} // end for
break;
case MotionEvent.ACTION_UP:
// Finger no longer on Barrier - Do Nothing
break;
}
return true;
}
// Render - Draws the Game Item Bitmaps to the screen
public void render(Canvas canvas)
{
// Set the background to white
canvas.drawColor(Color.WHITE);
barrier[0].draw(canvas);
barrier[1].draw(canvas);
barrier[2].draw(canvas);
}
// Update
// This is the Game's update method
// It iterates through all the Objects and calls their update() methods (if they have one)
public void update()
{
} // end update

In your barrier move code, you aren't checking a particular barrier is touched, so you're moving all of them to the same coordinates. The following loop does exactly the same thing as your current code:
// Move the Barrier the same as the finger
for (int i = 0; i < barrier.length; i++)
{
barrier[i].setX(x);
barrier[i].setY(y);
} //end for
To fix this, you need to check if the current barrier in the loop is the one that was touched, and can change that whole loop to something like:
// Move the Barrier the same as the finger
for (int i = 0; i < barrier.length; i++)
{
if (barrier[i].isTouched())
{
barrier[i].setX(x);
barrier[i].setY(y);
} // end if
} // end for
You would then need to make sure that you un-set the touched property in the ACTION_UP section. If you post your Barrier class definition I can probably help more.

I'm pretty sure your problem could be solved by making the barriers three separate objects instead of in an array.

As already pointed out, your code in handling the move is wrong because it moves all the Barriers to the same X,Y when it should only move the one that is touched.
Also, you are never resetting the isTouched on the objects in the Action up. When the user lifts their finger you should set them all to isTouched == false. If you don't do that then once you touch one it will always move to the X,Y.