How do I pass data from custom view to parent activity? I've data of which box is touched in the custom view. I want to pass that data to the parent activity whenever a box is touched.
Here's my activity layout:
1
Edit:
Here's parent activity:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="invisible">
<SearchView
android:id="#+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
>
</SearchView>
</RelativeLayout>
<com.example.gaurav.dummyapp.FaceOverlayView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/face_overlay"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
FaceOverlayView.java
public class FaceOverlayView extends View {
private Bitmap mBitmap;
private SparseArray<Face> mFaces;
float left = 0;
float top = 0;
float right = 0;
float bottom = 0;
double sc;
private String faceData;
public FaceOverlayView(Context context) {
this(context, null);
}
public FaceOverlayView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public FaceOverlayView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public void setBitmap( Bitmap bitmap ) {
mBitmap = bitmap;
FaceDetector detector = new FaceDetector.Builder( getContext() )
.setTrackingEnabled(true)
.setLandmarkType(FaceDetector.ALL_LANDMARKS)
.setMode(FaceDetector.ACCURATE_MODE)
.build();
if (!detector.isOperational()) {
//Handle contingency
} else {
Frame frame = new Frame.Builder().setBitmap(bitmap).build();
mFaces = detector.detect(frame);
detector.release();
}
logFaceData();
invalidate();
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if ((mBitmap != null) && (mFaces != null)) {
double scale = drawBitmap(canvas);
drawFaceBox(canvas, scale);
}
}
private double drawBitmap(Canvas canvas) {
double viewWidth = canvas.getWidth();
double viewHeight = canvas.getHeight();
double imageWidth = mBitmap.getWidth();
double imageHeight = mBitmap.getHeight();
double scale = Math.min(viewWidth / imageWidth, viewHeight / imageHeight);
sc = scale;
Rect destBounds = new Rect(0, 0, (int)(imageWidth * scale), (int)(imageHeight * scale));
canvas.drawBitmap(mBitmap, null, destBounds, null);
return scale;
}
private void drawFaceBox(Canvas canvas, double scale) {
//This should be defined as a member variable rather than
//being created on each onDraw request, but left here for
//emphasis.
Paint paint = new Paint();
paint.setColor(Color.GREEN);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(5);
for( int i = 0; i < mFaces.size(); i++ ) {
Face face = mFaces.valueAt(i);
left = (float) ( face.getPosition().x * scale );
top = (float) ( face.getPosition().y * scale );
right = (float) scale * ( face.getPosition().x + face.getWidth() );
bottom = (float) scale * ( face.getPosition().y + face.getHeight() );
canvas.drawRect( left, top, right, bottom, paint );
}
}
private void drawFaceLandmarks(Canvas canvas, double scale ) {
Paint paint = new Paint();
paint.setColor( Color.GREEN );
paint.setStyle( Paint.Style.STROKE );
paint.setStrokeWidth( 5 );
for( int i = 0; i < mFaces.size(); i++ ) {
Face face = mFaces.valueAt(i);
for ( Landmark landmark : face.getLandmarks() ) {
int cx = (int) ( landmark.getPosition().x * scale );
int cy = (int) ( landmark.getPosition().y * scale );
canvas.drawCircle( cx, cy, 10, paint );
}
}
}
private void logFaceData() {
float smilingProbability;
float leftEyeOpenProbability;
float rightEyeOpenProbability;
float eulerY;
float eulerZ;
for( int i = 0; i < mFaces.size(); i++ ) {
Face face = mFaces.valueAt(i);
smilingProbability = face.getIsSmilingProbability();
leftEyeOpenProbability = face.getIsLeftEyeOpenProbability();
rightEyeOpenProbability = face.getIsRightEyeOpenProbability();
eulerY = face.getEulerY();
eulerZ = face.getEulerZ();
Log.e( "Face Detection", "Smiling: " + smilingProbability );
Log.e( "Face Detection", "Left eye open: " + leftEyeOpenProbability );
Log.e( "Face Detection", "Right eye open: " + rightEyeOpenProbability );
Log.e( "Face Detection", "Euler Y: " + eulerY );
Log.e( "Face Detection", "Euler Z: " + eulerZ );
}
}
#Override
public boolean onTouchEvent(MotionEvent event) {
int action = event.getAction() & MotionEvent.ACTION_MASK;
int x = (int) event.getX();
int y = (int) event.getY();
float eulerY;
float eulerZ;
switch(action) {
case MotionEvent.ACTION_DOWN : {
for( int i = 0; i < mFaces.size(); i++ ) {
Face face = mFaces.valueAt(i);
left = (float) ( face.getPosition().x * sc );
top = (float) ( face.getPosition().y * sc );
right = (float) sc * ( face.getPosition().x + face.getWidth() );
bottom = (float) sc * ( face.getPosition().y + face.getHeight() );
if((x > left && x < right) && (y > top && y < bottom)){
Log.e("BOX>>>>>>>>>>", String.valueOf(i));
}
}
break;
}
case MotionEvent.ACTION_MOVE : {
//path.lineTo(event.getX(), event.getY());
break;
}
}
invalidate();
return super.onTouchEvent(event);
}
Activity Class:
public class dummyActivity extends AppCompatActivity {
private FaceOverlayView fooView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dummy);
fooView.setBitmap("bitmap");
}
i think what you need is onTouchListenter on the parent activity
box_view.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_UP){
// Do what you want/Get data from view etc... depends what kind of data it is, can you explain more?
return true;
}
return false;
}
});
i think you have a textfield inside the box that hold the integer value, so you do inside the onTouch
tv_box_1.getText();
//To get the text of the box1 (do for tv_box_2.getText) etc...
//after that just convert to integer
Integer.parseInt(tv_box_1.getText());
you can do another way, implementing the touch inside the parent and handle the touch, doing some ifs to check the View id and handle that
another way and easier is to give the TextView inside the box the match_parent for both direction and set the onClick, its the easier, you should use this one if you dont really need the touch
Related
I am attempting to build a RecyclerView list, with an alphabetical indexer down the right hand side. I have the list displaying perfectly and am able to scroll.
I am wondering if someone could give me some guidance in building the alphabetical indexer. I believe I need to iterate through my list and determine the letters used (I can do this). Then build the list of letters (for the indexer) and then use scrollToPosition(int position) to move to the right item in the list when a letter is selected.
The main issue that I can not work out is not building another list, it is rather the communication between the two lists. Any help would be greatly appreciated.
I believe this is the information you have been looking for as I have
You can check these libraries here:
danoz73/RecyclerViewFastScroller
as far as I remember he is the one who actually made the first alphabet indexer in recyclerview. I never made it work in my app because there was lots of problem customizing it.
AndroidDeveloperLB/LollipopContactsRecyclerViewFastScroller
the readme said hes got lots of optimizations made, So i think this is the best one i could use, but i havent made it work in my app for now.
code-computerlove/FastScrollRecyclerView
I think this is the design you want right? So either of these libs you used it should suffice your needs.
hope it helps
If anyone would like to use the FastScrollRecyclerView mentioned above in Xamarin, I just ported the main classes (you'll still need to create the xml resource and prep your index etc etc - see the original repo for a guide, it's pretty simple).
I included the tweaks suggested in the issues page to improve the ScrollToPosition and index height (which also makes it work in landscape) and also switched out the Java Handler class for an async Task.Delay. It may still have issues, it's a straight port otherwise. Seems to be ok though. Hopefully I have saved someone some time :)
public interface IFastScrollRecyclerViewAdapter
{
Dictionary<string, int> GetMapIndex();
}
//
public class FastScrollRecyclerView : RecyclerView
{
public const int INDWIDTH = 25;
public const int INDHEIGHT = 18;
public float ScaledWidth { get; set; }
public float ScaledHeight { get; set; }
public string[] Sections { get; set; }
public float Sx { get; set; }
public float Sy { get; set; }
public string Section { get; set; }
public bool ShowLetter { get; set; }
private ListHandler _listHandler;
private bool _setupThings = false;
private Context _context;
public FastScrollRecyclerView(Context context) : base(context)
{
_context = context;
}
public FastScrollRecyclerView(Context context, IAttributeSet attrs) : base(context, attrs)
{
_context = context;
}
public FastScrollRecyclerView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle)
{
_context = context;
}
public override void OnDraw(Canvas c)
{
if (!_setupThings && GetAdapter() != null)
SetupThings();
base.OnDraw(c);
}
private void SetupThings()
{
//create az text data
var sectionSet = ((IFastScrollRecyclerViewAdapter)GetAdapter()).GetMapIndex().Keys;
var listSection = new List<string>(sectionSet);
listSection.Sort();
Sections = new string[listSection.Count];
int i = 0;
foreach (var s in listSection)
{
Sections[i++] = s;
}
ScaledWidth = INDWIDTH * _context.Resources.DisplayMetrics.Density;
var divisor = sectionSet.Count == 0 ? 1 : sectionSet.Count;
ScaledHeight = Height / divisor ;// INDHEIGHT * _context.Resources.DisplayMetrics.Density;
Sx = Width - PaddingRight - (float)(1.2 * ScaledWidth);
Sy = (float)((Height - (ScaledHeight * Sections.Length)) / 2.0);
_setupThings = true;
}
public override bool OnTouchEvent(MotionEvent motionEvent)
{
if (_setupThings)
{
var adapter = GetAdapter() as IFastScrollRecyclerViewAdapter;
var x = motionEvent.GetX();
var y = motionEvent.GetY();
switch (motionEvent.Action)
{
case MotionEventActions.Down:
{
if (x < Sx - ScaledWidth || y < Sy || y > (Sy + ScaledHeight * Sections.Length))
{
return base.OnTouchEvent(motionEvent);
}
else
{
//// We touched the index bar
float yy = y - PaddingTop - PaddingBottom - Sy;
int currentPosition = (int)Math.Floor(yy / ScaledHeight);
if (currentPosition < 0) currentPosition = 0;
if (currentPosition >= Sections.Length) currentPosition = Sections.Length - 1;
Section = Sections[currentPosition];
ShowLetter = true;
int positionInData = 0;
if (adapter.GetMapIndex().ContainsKey(Section.ToUpper()))
{
positionInData = adapter.GetMapIndex()[Section.ToUpper()];
}
(GetLayoutManager() as LinearLayoutManager).ScrollToPositionWithOffset(positionInData, 20);
Invalidate();
}
break;
}
case MotionEventActions.Move:
{
if (!ShowLetter && (x < Sx - ScaledWidth || y < Sy || y > (Sy + ScaledHeight * Sections.Length)))
{
return base.OnTouchEvent(motionEvent);
}
else
{
float yy = y - Sy;
int currentPosition = (int)Math.Floor(yy / ScaledHeight);
if (currentPosition < 0) currentPosition = 0;
if (currentPosition >= Sections.Length) currentPosition = Sections.Length - 1;
Section = Sections[currentPosition];
ShowLetter = true;
int positionInData = 0;
if (adapter.GetMapIndex().ContainsKey(Section.ToUpper()))
positionInData = adapter.GetMapIndex()[Section.ToUpper()];
(GetLayoutManager() as LinearLayoutManager).ScrollToPositionWithOffset(positionInData, 20);
Invalidate();
}
break;
}
case MotionEventActions.Up:
{
_listHandler = new ListHandler(this);
_listHandler.DelayClear();
if (x < Sx - ScaledWidth || y < Sy || y > (Sy + ScaledHeight * Sections.Length))
{
return base.OnTouchEvent(motionEvent);
}
else
{
return true;
}
}
}
}
return true;
}
private class ListHandler
{
FastScrollRecyclerView _parent;
public ListHandler (FastScrollRecyclerView parent)
{
_parent = parent;
}
public async void DelayClear()
{
await Task.Delay(100);
_parent.ShowLetter = false;
_parent.Invalidate();
}
}
}
//
public class FastScrollRecyclerViewItemDecoration : ItemDecoration
{
private Context _context;
public FastScrollRecyclerViewItemDecoration(Context context)
{
_context = context;
}
public override void OnDrawOver(Canvas canvas, RecyclerView parent, State state)
{
base.OnDrawOver(canvas, parent, state);
float scaledWidth = ((FastScrollRecyclerView)parent).ScaledWidth;
float sx = ((FastScrollRecyclerView)parent).Sx;
float scaledHeight = ((FastScrollRecyclerView)parent).ScaledHeight;
float sy = ((FastScrollRecyclerView)parent).Sy;
string[] sections = ((FastScrollRecyclerView)parent).Sections;
string section = ((FastScrollRecyclerView)parent).Section;
bool showLetter = ((FastScrollRecyclerView)parent).ShowLetter;
// We draw the letter in the middle
if (showLetter & section != null && !section.Equals(""))
{
//overlay everything when displaying selected index Letter in the middle
Paint overlayDark = new Paint();
overlayDark.Color = Color.Black;
overlayDark.Alpha = 100;
canvas.DrawRect(0, 0, parent.Width, parent.Height, overlayDark);
float middleTextSize = _context.Resources.GetDimension(Resource.Dimension.fast_scroll_overlay_text_size );
Paint middleLetter = new Paint();
middleLetter.Color = new Color(ContextCompat.GetColor(_context, Resource.Color.primary));
middleLetter.TextSize = middleTextSize;
middleLetter.AntiAlias = true;
middleLetter.FakeBoldText = true;
middleLetter.SetStyle(Paint.Style.Fill);
int xPos = (canvas.Width - (int)middleTextSize) / 2;
int yPos = (int)((canvas.Height / 2) - ((middleLetter.Descent() + middleLetter.Ascent()) / 2));
canvas.DrawText(section.ToUpper(), xPos, yPos, middleLetter);
}
// // draw indez A-Z
Paint textPaint = new Paint();
textPaint.AntiAlias = true;
textPaint.SetStyle(Paint.Style.Fill);
for (int i = 0; i < sections.Length; i++)
{
if (showLetter & section != null && !section.Equals("") && section != null
&& sections[i].ToUpper().Equals(section.ToUpper()))
{
textPaint.Color = Color.White;
textPaint.Alpha = 255;
textPaint.FakeBoldText = true;
textPaint.TextSize = scaledWidth / 2;
canvas.DrawText(sections[i].ToUpper(),
sx + textPaint.TextSize / 2, sy + parent.PaddingTop
+ scaledHeight * (i + 1), textPaint);
textPaint.TextSize = scaledWidth;
canvas.DrawText("•",
sx - textPaint.TextSize / 3, sy + parent.PaddingTop
+ scaledHeight * (i + 1) + scaledHeight / 3, textPaint);
}
else
{
textPaint.Color = new Color(ContextCompat.GetColor(_context, Resource.Color.primary));
textPaint.Alpha = 200;
textPaint.FakeBoldText = false;
textPaint.TextSize = scaledWidth / 2;
canvas.DrawText(sections[i].ToUpper(),
sx + textPaint.TextSize / 2, sy + parent.PaddingTop
+ scaledHeight * (i + 1), textPaint);
}
}
}
}
The wheel View (CircleView) is working fine in major of devices but this error coming from S4 and Note 3 devices.
The touch is getting deducted but the that not fall under the weidgetregion.
false - 1 has to be true - 1
Region Log is:
My Circle View code is
public class CircleView extends View implements OnTouchListener{
boolean firstTime = false;
private List<CircleViewBean> mMenuEntries = new ArrayList<CircleViewBean>();
private OnCellTouchListener mOnCellTouchListener = null;
public interface OnCellTouchListener {
public void onTouch(Wedge cell);
}
private Shader mShader;
private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
private float screen_density = getContext().getResources().getDisplayMetrics().density;
//Radius of inner ring size
private int mMinSize = scalePX(60);
//Radius of outer ring size
private int mMaxSize = scalePX(170);
private int mWedgeQty = 6;
//Center X location of Radial Menu
private int xPosition = scalePX(120);
//Center Y location of Radial Menu
private int yPosition = scalePX(120);
int touchIndex = -1;
private Wedge[] mWedges;
private RectF mViewRect = new RectF();
private int scalePX( int dp_size )
{
return (int) (dp_size * screen_density + 0.5f);
}
public CircleView(Context context) {
this(context, null);
}
public CircleView(Context context, AttributeSet attrs) {
super(context, attrs);
HashMap<String, String> device = Constants.getDeviceDetails(getResources().getDisplayMetrics().heightPixels, getResources().getDisplayMetrics().widthPixels);
mMinSize = Integer.parseInt(device.get("in_arc"));
mMaxSize = Integer.parseInt(device.get("out_arc"));
setBackgroundResource(R.drawable.centre_wheel);
}
private void determineWedges() {
int entriesQty = mMenuEntries.size();
if ( entriesQty > 0) {
mWedgeQty = entriesQty;
float degSlice = 360 / mWedgeQty;
float start_degSlice = 270 - (degSlice/2);
//calculates where to put the images
this.mWedges = new Wedge[mWedgeQty];
double mid = 0, min = 0, max = 0;
for(int i = 0; i < this.mWedges.length; i++) {
this.mWedges[i] = new Wedge(xPosition, yPosition, mMinSize, mMaxSize, (i
* degSlice)+start_degSlice, degSlice, mMenuEntries.get(i).getIndex());
mid = this.mWedges[i].midValue = normalizeAngle( ((i * degSlice) + start_degSlice + degSlice) / 2 );
min = normalizeAngle( (i * degSlice) + start_degSlice );
max = normalizeAngle( (i * degSlice) + start_degSlice + degSlice);
this.mWedges[i].minValue = min;
this.mWedges[i].midValue = mid;
this.mWedges[i].maxValue = max;
mViewRect.union( new RectF( mWedges[i].getWedgeRegion().getBounds() ) );
}
mShader = new RadialGradient(xPosition, yPosition, mMaxSize, new int[] { 0xff595756, 0xffCCC5C3, 0xf878280}, null, Shader.TileMode.MIRROR);
invalidate();
}
}
#Override
public void onDraw(Canvas canvas) {
if(!firstTime){
firstTime = true;
this.xPosition = (int) (getWidth()/2f);
this.yPosition = (int) (getHeight()/2f);
determineWedges();
}
canvas.scale(getWidth() / mViewRect.width(), getHeight() / mViewRect.width(), xPosition, yPosition);
//Saving the canvas and later restoring it so only this image will be rotated.
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.restore();
canvas.save();
canvas.restore();
mPaint.setShader( mShader );
}
private double normalizeAngle(double angle) {
if(angle >= 0) {
while( angle > 360 ) {
angle -= 360;
}
}
else {
while( angle < -360) {
angle += 360;
}
}
return angle;
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// TODO Auto-generated method stub
int wmode = MeasureSpec.getMode(widthMeasureSpec);
int hmode = MeasureSpec.getMode(heightMeasureSpec);
int wsize = MeasureSpec.getSize(widthMeasureSpec);
int hsize = MeasureSpec.getSize(heightMeasureSpec);
int width = (int)mViewRect.width();
int height = (int) mViewRect.height();
if (wmode == MeasureSpec.EXACTLY) {
width = wsize;
}
if (hmode == MeasureSpec.EXACTLY) {
height = hsize;
}
this.setMeasuredDimension(width, height);
invalidate();
}
public class Wedge extends Path {
private int x, y;
private int InnerSize, OuterSize;
private float StartArc;
private float ArcWidth;
private Region mWedgeRegion;
private int index=0;
public double minValue;
public double midValue;
public double maxValue;
private Wedge(int x, int y, int InnerSize, int OuterSize, float StartArc, float ArcWidth, int category) {
super();
this.index = category;
if (StartArc >= 360) {
StartArc = StartArc-360;
}
minValue = midValue = maxValue = 0;
mWedgeRegion = new Region();
this.x = x; this.y = y;
this.InnerSize = InnerSize;
this.OuterSize = OuterSize;
this.StartArc = StartArc;
this.ArcWidth = ArcWidth;
this.buildPath();
}
public int getCategoryIndex(){
return this.index;
}
public String toString() {
return minValue + " " + midValue + " " + maxValue;
}
/**
*
* #return the bottom rect that will be used for intersection
*/
public Region getWedgeRegion() {
return mWedgeRegion;
}
private void buildPath() {
final RectF rect = new RectF();
final RectF rect2 = new RectF();
//Rectangles values
rect.set(this.x-this.InnerSize, this.y-this.InnerSize, this.x+this.InnerSize, this.y+this.InnerSize);
rect2.set(this.x-this.OuterSize, this.y-this.OuterSize, this.x+this.OuterSize, this.y+this.OuterSize);
this.reset();
//this.moveTo(100, 100);
this.arcTo(rect2, StartArc, ArcWidth);
this.arcTo(rect, StartArc+ArcWidth, -ArcWidth);
this.close();
mWedgeRegion.setPath( this, new Region(0,0,480,800) );
}
}
public boolean addMenuEntry(CircleViewBean menuEntry) {
mMenuEntries.add(menuEntry);
return true;
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_UP){
if(mOnCellTouchListener!=null && touchIndex >-1){
int i=0;
for(Wedge day : mWedges) {
if(day.getWedgeRegion().getBounds().contains((int)event.getX(), (int)event.getY()) && touchIndex==i) {
mOnCellTouchListener.onTouch(mWedges[touchIndex]);
break;
}
i++;
}
}
}else if(event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE){
int i=0;
for(Wedge day : mWedges) {
if(day.getWedgeRegion().getBounds().contains((int)event.getX(), (int)event.getY())) {
touchIndex = i;
setBackgroundResource(mMenuEntries.get(touchIndex).getIcon());
}
i++;
}
}
return true;
}
public void setOnCellTouchListener(OnCellTouchListener p) {
mOnCellTouchListener = p;
}
public boolean onTouch(View v, MotionEvent event) {
return false;
}
}
First of all, look at line 307. Learn how to read crash logs because it says exactly on what line the crash is, and then it shouldn't be too hard too determine what is wrong.
Not knowing what line it is I guess that mWedges might be null. in the onTouch you do for(Wedge day : mWedges) but it is not guaranteed that is isn't null there. You should check before you do that if it is null.
You put it to a non null value in determineWedges but only when there is at least 1 mMenuEntries. So when there are no entries when you do an onTouch it will crash.
At last i found my mistake in this code that it is working in mdpi and htpi and not in xxhdpi the reason is
mWedgeRegion.setPath( this, new Region(0,0,480,800) );
The bound exceeds the circle size, i mean the xxhdpi draws an circle with 1000x1000 values, so i made this too like this (max values)
mWedgeRegion.setPath( this, new Region(0,0,720,1200) )
please tell me how can i remove the exception. or give me idea to implement zoom view with curlview.....
my xml file is like this,
<?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:id="#+id/relat">
<com.example.image.ZoomView
>
<com.example.image.PageCurlView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/dcgpagecurlPageCurlView1"
>
</com.example.image.PageCurlView>
my java file is
package com.example.image;
public class StandaloneExample extends Activity {
Button bt;LinearLayout lr;
/** Decoded bitmap image */
private Bitmap mBitmap;
private ZoomView zoomview;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.standalone_example);
View v1 = ((LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.standalone_example, null, false);
v1.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
zoomview.addView(v1);
lr = (LinearLayout) findViewById(R.id.relat);
lr.addView(zoomview);
}
#Override
public void onDestroy(){
super.onDestroy();
System.gc();
finish();
}
public void lockOrientationLandscape() {
lockOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
public void lockOrientationPortrait() {
lockOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
public void lockOrientation( int orientation ) {
setRequestedOrientation(orientation);
}
}
i have implemented zoomView.java as described in a link
pagecurlview.java class is
public class PageCurlView extends View {
private final static String TAG = "PageCurlView";
private Paint mTextPaint;
private TextPaint mTextPaintShadow;
private int mCurlSpeed;
private int mUpdateRate;
private int mInitialEdgeOffset;
private int mCurlMode;
public static final int CURLMODE_SIMPLE = 0;
public static final int CURLMODE_DYNAMIC = 1;
private boolean bEnableDebugMode = false;
private WeakReference<Context> mContext;
private FlipAnimationHandler mAnimationHandler;
private float mFlipRadius;
private Vector2D mMovement;
private Vector2D mFinger;
private Vector2D mOldMovement;
private Paint mCurlEdgePaint;
private Vector2D mA, mB, mC, mD, mE, mF, mOldF, mOrigin;
private int mCurrentLeft, mCurrentTop;
private boolean bViewDrawn;
private boolean bFlipRight;
private boolean bFlipping;
private boolean bUserMoves;
private boolean bBlockTouchInput = false;
private boolean bEnableInputAfterDraw = false;
private Bitmap mForeground;
private Bitmap mBackground;
private ArrayList<Bitmap> mPages;
private int mIndex = 0;
private class Vector2D
{
public float x,y;
public Vector2D(float x, float y)
{
this.x = x;
this.y = y;
}
#Override
public String toString() {
// TODO Auto-generated method stub
return "("+this.x+","+this.y+")";
}
public float length() {
return (float) Math.sqrt(x * x + y * y);
}
public float lengthSquared() {
return (x * x) + (y * y);
}
public boolean equals(Object o) {
if (o instanceof Vector2D) {
Vector2D p = (Vector2D) o;
return p.x == x && p.y == y;
}
return false;
}
public Vector2D reverse() {
return new Vector2D(-x,-y);
}
public Vector2D sum(Vector2D b) {
return new Vector2D(x+b.x,y+b.y);
}
public Vector2D sub(Vector2D b) {
return new Vector2D(x-b.x,y-b.y);
}
public float dot(Vector2D vec) {
return (x * vec.x) + (y * vec.y);
}
public float cross(Vector2D a, Vector2D b) {
return a.cross(b);
}
public float cross(Vector2D vec) {
return x * vec.y - y * vec.x;
}
public float distanceSquared(Vector2D other) {
float dx = other.x - x;
float dy = other.y - y;
return (dx * dx) + (dy * dy);
}
public float distance(Vector2D other) {
return (float) Math.sqrt(distanceSquared(other));
}
public float dotProduct(Vector2D other) {
return other.x * x + other.y * y;
}
public Vector2D normalize() {
float magnitude = (float) Math.sqrt(dotProduct(this));
return new Vector2D(x / magnitude, y / magnitude);
}
public Vector2D mult(float scalar) {
return new Vector2D(x*scalar,y*scalar);
}
}
class FlipAnimationHandler extends Handler {
#Override
public void handleMessage(Message msg) {
PageCurlView.this.FlipAnimationStep();
}
public void sleep(long millis) {
this.removeMessages(0);
sendMessageDelayed(obtainMessage(0), millis);
}
}
public PageCurlView(Context context) {
super(context);
init(context);
ResetClipEdge();
}
public PageCurlView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
// Get the data from the XML AttributeSet
{
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PageCurlView);
// Get data
bEnableDebugMode = a.getBoolean(R.styleable.PageCurlView_enableDebugMode, bEnableDebugMode);
mCurlSpeed = a.getInt(R.styleable.PageCurlView_curlSpeed, mCurlSpeed);
mUpdateRate = a.getInt(R.styleable.PageCurlView_updateRate, mUpdateRate);
mInitialEdgeOffset = a.getInt(R.styleable.PageCurlView_initialEdgeOffset, mInitialEdgeOffset);
mCurlMode = a.getInt(R.styleable.PageCurlView_curlMode, mCurlMode);
Log.i(TAG, "mCurlSpeed: " + mCurlSpeed);
Log.i(TAG, "mUpdateRate: " + mUpdateRate);
Log.i(TAG, "mInitialEdgeOffset: " + mInitialEdgeOffset);
Log.i(TAG, "mCurlMode: " + mCurlMode);
// recycle object (so it can be used by others)
a.recycle();
}
ResetClipEdge();
}
private final void init(Context context) {
// Foreground text paint
mTextPaint = new Paint();
mTextPaint.setAntiAlias(true);
mTextPaint.setTextSize(16);
mTextPaint.setColor(0xFF000000);
// The shadow
mTextPaintShadow = new TextPaint();
mTextPaintShadow.setAntiAlias(true);
mTextPaintShadow.setTextSize(16);
mTextPaintShadow.setColor(0x00000000);
// Cache the context
mContext = new WeakReference<Context>(context);
// Base padding
setPadding(3, 3, 3, 3);
// The focus flags are needed
setFocusable(true);
setFocusableInTouchMode(true);
mMovement = new Vector2D(0,0);
mFinger = new Vector2D(0,0);
mOldMovement = new Vector2D(0,0);
// Create our curl animation handler
mAnimationHandler = new FlipAnimationHandler();
// Create our edge paint
mCurlEdgePaint = new Paint();
mCurlEdgePaint.setColor(Color.WHITE);
mCurlEdgePaint.setAntiAlias(true);
mCurlEdgePaint.setStyle(Paint.Style.FILL);
mCurlEdgePaint.setShadowLayer(10, -5, 5, 0x99000000);
// Set the default props, those come from an XML :D
mCurlSpeed = 30;
mUpdateRate = 33;
mInitialEdgeOffset = 20;
mCurlMode = 1;
// LEGACY PAGE HANDLING!
// Create pages
mPages = new ArrayList<Bitmap>();
mPages.add(BitmapFactory.decodeResource(getResources(), R.drawable.princess));
mPages.add(BitmapFactory.decodeResource(getResources(), R.drawable.temp));
// Create some sample images
mForeground = mPages.get(0);
mBackground = mPages.get(1);
}
public void ResetClipEdge()
{
// Set our base movement
mMovement.x = mInitialEdgeOffset;
mMovement.y = mInitialEdgeOffset;
mOldMovement.x = 0;
mOldMovement.y = 0;
// Now set the points
// TODO: OK, those points MUST come from our measures and
// the actual bounds of the view!
mA = new Vector2D(mInitialEdgeOffset, 0);
mB = new Vector2D(this.getWidth(), this.getHeight());
mC = new Vector2D(this.getWidth(), 0);
mD = new Vector2D(0, 0);
mE = new Vector2D(0, 0);
mF = new Vector2D(0, 0);
mOldF = new Vector2D(0, 0);
// The movement origin point
mOrigin = new Vector2D(this.getWidth(), 0);
}
private Context GetContext() {
return mContext.get();
}
public boolean IsCurlModeDynamic()
{
return mCurlMode == CURLMODE_DYNAMIC;
}
public void SetCurlSpeed(int curlSpeed)
{
if ( curlSpeed < 1 )
throw new IllegalArgumentException("curlSpeed must be greated than 0");
mCurlSpeed = curlSpeed;
}
public int GetCurlSpeed()
{
return mCurlSpeed;
}
public void SetUpdateRate(int updateRate)
{
if ( updateRate < 1 )
throw new IllegalArgumentException("updateRate must be greated than 0");
mUpdateRate = updateRate;
}
public int GetUpdateRate()
{
return mUpdateRate;
}
public void SetInitialEdgeOffset(int initialEdgeOffset)
{
if ( initialEdgeOffset < 0 )
throw new IllegalArgumentException("initialEdgeOffset can not negative");
mInitialEdgeOffset = initialEdgeOffset;
}
public int GetInitialEdgeOffset()
{
return mInitialEdgeOffset;
}
public void SetCurlMode(int curlMode)
{
if ( curlMode != CURLMODE_SIMPLE &&
curlMode != CURLMODE_DYNAMIC )
throw new IllegalArgumentException("Invalid curlMode");
mCurlMode = curlMode;
}
public int GetCurlMode()
{
return mCurlMode;
}
public void SetEnableDebugMode(boolean bFlag)
{
bEnableDebugMode = bFlag;
}
public boolean IsDebugModeEnabled()
{
return bEnableDebugMode;
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int finalWidth, finalHeight;
finalWidth = measureWidth(widthMeasureSpec);
finalHeight = measureHeight(heightMeasureSpec);
setMeasuredDimension(finalWidth, finalHeight);
}
private int measureWidth(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else {
// Measure the text
result = specSize;
}
return result;
}
private int measureHeight(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = specSize;
}
return result;
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (!bBlockTouchInput) {
// Get our finger position
mFinger.x = event.getX();
mFinger.y = event.getY();
int width = getWidth();
// Depending on the action do what we need to
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mOldMovement.x = mFinger.x;
mOldMovement.y = mFinger.y;
// If we moved over the half of the display flip to next
if (mOldMovement.x > (width >> 1)) {
mMovement.x = mInitialEdgeOffset;
mMovement.y = mInitialEdgeOffset;
// Set the right movement flag
bFlipRight = true;
} else {
// Set the left movement flag
bFlipRight = false;
// go to next previous page
previousView();
// Set new movement
mMovement.x = IsCurlModeDynamic()?width<<1:width;
mMovement.y = mInitialEdgeOffset;
}
break;
case MotionEvent.ACTION_UP:
bUserMoves=false;
bFlipping=true;
FlipAnimationStep();
break;
case MotionEvent.ACTION_MOVE:
bUserMoves=true;
// Get movement
mMovement.x -= mFinger.x - mOldMovement.x;
mMovement.y -= mFinger.y - mOldMovement.y;
mMovement = CapMovement(mMovement, true);
// Make sure the y value get's locked at a nice level
if ( mMovement.y <= 1 )
mMovement.y = 1;
// Get movement direction
if (mFinger.x < mOldMovement.x ) {
bFlipRight = true;
} else {
bFlipRight = false;
}
// Save old movement values
mOldMovement.x = mFinger.x;
mOldMovement.y = mFinger.y;
// Force a new draw call
DoPageCurl();
this.invalidate();
break;
}
}
// TODO: Only consume event if we need to.
return true;
}
private Vector2D CapMovement(Vector2D point, boolean bMaintainMoveDir)
{
// Make sure we never ever move too much
if (point.distance(mOrigin) > mFlipRadius)
{
if ( bMaintainMoveDir )
{
// Maintain the direction
point = mOrigin.sum(point.sub(mOrigin).normalize().mult(mFlipRadius));
}
else
{
// Change direction
if ( point.x > (mOrigin.x+mFlipRadius))
point.x = (mOrigin.x+mFlipRadius);
else if ( point.x < (mOrigin.x-mFlipRadius) )
point.x = (mOrigin.x-mFlipRadius);
point.y = (float) (Math.sin(Math.acos(Math.abs(point.x-mOrigin.x)/mFlipRadius))*mFlipRadius);
}
}
return point;
}
public void FlipAnimationStep() {
if ( !bFlipping )
return;
int width = getWidth();
// No input when flipping
bBlockTouchInput = true;
// Handle speed
float curlSpeed = mCurlSpeed;
if ( !bFlipRight )
curlSpeed *= -1;
// Move us
mMovement.x += curlSpeed;
mMovement = CapMovement(mMovement, false);
// Create values
DoPageCurl();
// Check for endings :D
if (mA.x < 1 || mA.x > width - 1) {
bFlipping = false;
if (bFlipRight) {
//SwapViews();
nextView();
}
ResetClipEdge();
// Create values
DoPageCurl();
// Enable touch input after the next draw event
bEnableInputAfterDraw = true;
}
else
{
mAnimationHandler.sleep(mUpdateRate);
}
// Force a new draw call
this.invalidate();
}
private void DoPageCurl()
{
if(bFlipping){
if ( IsCurlModeDynamic() )
doDynamicCurl();
else
doSimpleCurl();
} else {
if ( IsCurlModeDynamic() )
doDynamicCurl();
else
doSimpleCurl();
}
}
private void doSimpleCurl() {
int width = getWidth();
int height = getHeight();
// Calculate point A
mA.x = width - mMovement.x;
mA.y = height;
// Calculate point D
mD.x = 0;
mD.y = 0;
if (mA.x > width / 2) {
mD.x = width;
mD.y = height - (width - mA.x) * height / mA.x;
} else {
mD.x = 2 * mA.x;
mD.y = 0;
}
double angle = Math.atan((height - mD.y) / (mD.x + mMovement.x - width));
double _cos = Math.cos(2 * angle);
double _sin = Math.sin(2 * angle);
mF.x = (float) (width - mMovement.x + _cos * mMovement.x);
mF.y = (float) (height - _sin * mMovement.x);
// If the x position of A is above half of the page we are still not
// folding the upper-right edge and so E and D are equal.
if (mA.x > width / 2) {
mE.x = mD.x;
mE.y = mD.y;
}
else
{
// So get E
mE.x = (float) (mD.x + _cos * (width - mD.x));
mE.y = (float) -(_sin * (width - mD.x));
}
}
private void doDynamicCurl() {
int width = getWidth();
int height = getHeight();
mF.x = width - mMovement.x+0.1f;
mF.y = height - mMovement.y+0.1f;
if(mA.x==0) {
mF.x= Math.min(mF.x, mOldF.x);
mF.y= Math.max(mF.y, mOldF.y);
}
// Get diffs
float deltaX = width-mF.x;
float deltaY = height-mF.y;
float BH = (float) (Math.sqrt(deltaX * deltaX + deltaY * deltaY) / 2);
double tangAlpha = deltaY / deltaX;
double alpha = Math.atan(deltaY / deltaX);
double _cos = Math.cos(alpha);
double _sin = Math.sin(alpha);
mA.x = (float) (width - (BH / _cos));
mA.y = height;
mD.y = (float) (height - (BH / _sin));
mD.x = width;
mA.x = Math.max(0,mA.x);
if(mA.x==0) {
mOldF.x = mF.x;
mOldF.y = mF.y;
}
// Get W
mE.x = mD.x;
mE.y = mD.y;
// Correct
if (mD.y < 0) {
mD.x = width + (float) (tangAlpha * mD.y);
mE.y = 0;
mE.x = width + (float) (Math.tan(2 * alpha) * mD.y);
}
}
#Deprecated
private void SwapViews() {
Bitmap temp = mForeground;
mForeground = mBackground;
mBackground = temp;
}
private void nextView() {
int foreIndex = mIndex + 1;
if(foreIndex >= mPages.size()) {
foreIndex = 0;
}
int backIndex = foreIndex + 1;
if(backIndex >= mPages.size()) {
backIndex = 0;
}
mIndex = foreIndex;
setViews(foreIndex, backIndex);
}
private void previousView() {
int backIndex = mIndex;
int foreIndex = backIndex - 1;
if(foreIndex < 0) {
foreIndex = mPages.size()-1;
}
mIndex = foreIndex;
setViews(foreIndex, backIndex);
}
private void setViews(int foreground, int background) {
mForeground = mPages.get(foreground);
mBackground = mPages.get(background);
}
#Override
protected void onDraw(Canvas canvas) {
mCurrentLeft = getLeft();
mCurrentTop = getTop();
if ( !bViewDrawn ) {
bViewDrawn = true;
onFirstDrawEvent(canvas);
}
canvas.drawColor(Color.WHITE);
Rect rect = new Rect();
rect.left = 0;
rect.top = 0;
rect.bottom = getHeight();
rect.right = getWidth();
// First Page render
Paint paint = new Paint();
// Draw our elements
drawForeground(canvas, rect, paint);
drawBackground(canvas, rect, paint);
drawCurlEdge(canvas);
// Draw any debug info once we are done
if ( bEnableDebugMode )
drawDebug(canvas);
// Check if we can re-enable input
if ( bEnableInputAfterDraw )
{
bBlockTouchInput = false;
bEnableInputAfterDraw = false;
}
// Restore canvas
//canvas.restore();
}
protected void onFirstDrawEvent(Canvas canvas) {
mFlipRadius = getWidth();
ResetClipEdge();
DoPageCurl();
}
private void drawForeground( Canvas canvas, Rect rect, Paint paint ) {
canvas.drawBitmap(mForeground, null, rect, paint);
// Draw the page number (first page is 1 in real life :D
// there is no page number 0 hehe)
drawPageNum(canvas, mIndex);
}
private Path createBackgroundPath() {
Path path = new Path();
path.moveTo(mA.x, mA.y);
path.lineTo(mB.x, mB.y);
path.lineTo(mC.x, mC.y);
path.lineTo(mD.x, mD.y);
path.lineTo(mA.x, mA.y);
return path;
}
private void drawBackground( Canvas canvas, Rect rect, Paint paint ) {
Path mask = createBackgroundPath();
// Save current canvas so we do not mess it up
canvas.save();
canvas.clipPath(mask);
canvas.drawBitmap(mBackground, null, rect, paint);
// Draw the page number (first page is 1 in real life :D
// there is no page number 0 hehe)
drawPageNum(canvas, mIndex);
canvas.restore();
}
private Path createCurlEdgePath() {
Path path = new Path();
path.moveTo(mA.x, mA.y);
path.lineTo(mD.x, mD.y);
path.lineTo(mE.x, mE.y);
path.lineTo(mF.x, mF.y);
path.lineTo(mA.x, mA.y);
return path;
}
private void drawCurlEdge( Canvas canvas )
{
Path path = createCurlEdgePath();
canvas.drawPath(path, mCurlEdgePaint);
}
private void drawPageNum(Canvas canvas, int pageNum)
{
mTextPaint.setColor(Color.WHITE);
String pageNumText = "- "+pageNum+" -";
drawCentered(canvas, pageNumText,canvas.getHeight()-mTextPaint.getTextSize()-5,mTextPaint,mTextPaintShadow);
}
public static void drawTextShadowed(Canvas canvas, String text, float x, float y, Paint textPain, Paint shadowPaint) {
canvas.drawText(text, x-1, y, shadowPaint);
canvas.drawText(text, x, y+1, shadowPaint);
canvas.drawText(text, x+1, y, shadowPaint);
canvas.drawText(text, x, y-1, shadowPaint);
canvas.drawText(text, x, y, textPain);
}
public static void drawCentered(Canvas canvas, String text, float y, Paint textPain, Paint shadowPaint)
{
float posx = (canvas.getWidth() - textPain.measureText(text))/2;
drawTextShadowed(canvas, text, posx, y, textPain, shadowPaint);
}
private void drawDebug(Canvas canvas)
{
float posX = 10;
float posY = 20;
Paint paint = new Paint();
paint.setStrokeWidth(5);
paint.setStyle(Style.STROKE);
paint.setColor(Color.BLACK);
canvas.drawCircle(mOrigin.x, mOrigin.y, getWidth(), paint);
paint.setStrokeWidth(3);
paint.setColor(Color.RED);
canvas.drawCircle(mOrigin.x, mOrigin.y, getWidth(), paint);
paint.setStrokeWidth(5);
paint.setColor(Color.BLACK);
canvas.drawLine(mOrigin.x, mOrigin.y, mMovement.x, mMovement.y, paint);
paint.setStrokeWidth(3);
paint.setColor(Color.RED);
canvas.drawLine(mOrigin.x, mOrigin.y, mMovement.x, mMovement.y, paint);
posY = debugDrawPoint(canvas,"A",mA,Color.RED,posX,posY);
posY = debugDrawPoint(canvas,"B",mB,Color.GREEN,posX,posY);
posY = debugDrawPoint(canvas,"C",mC,Color.BLUE,posX,posY);
posY = debugDrawPoint(canvas,"D",mD,Color.CYAN,posX,posY);
posY = debugDrawPoint(canvas,"E",mE,Color.YELLOW,posX,posY);
posY = debugDrawPoint(canvas,"F",mF,Color.LTGRAY,posX,posY);
posY = debugDrawPoint(canvas,"Mov",mMovement,Color.DKGRAY,posX,posY);
posY = debugDrawPoint(canvas,"Origin",mOrigin,Color.MAGENTA,posX,posY);
posY = debugDrawPoint(canvas,"Finger",mFinger,Color.GREEN,posX,posY);
}
private float debugDrawPoint(Canvas canvas, String name, Vector2D point, int color, float posX, float posY) {
return debugDrawPoint(canvas,name+" "+point.toString(),point.x, point.y, color, posX, posY);
}
private float debugDrawPoint(Canvas canvas, String name, float X, float Y, int color, float posX, float posY) {
mTextPaint.setColor(color);
drawTextShadowed(canvas,name,posX , posY, mTextPaint,mTextPaintShadow);
Paint paint = new Paint();
paint.setStrokeWidth(5);
paint.setColor(color);
canvas.drawPoint(X, Y, paint);
return posY+15;
}
}
I have understood this is a problem of my code. But I can't find out which is the problem. I downloaded a "sample project" to use the touchListener, it works, but if I try to do the same on my project, suddently I can get only "press down button" events.
Activity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.navigator_layout);
b = this.getIntent().getStringArrayExtra("building");
cv = (MapView) this.findViewById(R.id.map);
MapMovement mm = new MapMovement(cv);
compass = new Compass(this, cv, debug);
}
map.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/black"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen" >
<it.inav.graphics.MapView
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerInParent="true" />
</RelativeLayout>
I omitted some parts of MapView, where I get the images and so on, ask if you think is important:
public class MapView extends ImageView {
...
public MapView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public MapView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MapView(Context context) {
super(context);
}
public void init(List<Floor> floors) {
this.floors = floors;
setFocusable(true);
}
private void setInitialZoom() {
if (screen_center == null)
return;
// recupero la dimensione dell'immagine
int image_width = bmp.getWidth();
int image_heigth = bmp.getHeight();
int longest_i = image_width;
if (longest_i < image_heigth)
longest_i = image_heigth;
float longest_s = screen_center.x * 2;
if (longest_s < screen_center.y * 2)
longest_s = screen_center.y * 2;
float zoom = (float)longest_s / longest_i;
this.min_zoom = zoom;
this.zoom = zoom;
setImageCenter(null);
}
private void setZoom(float zoom) {
if (zoom < min_zoom)
this.zoom = min_zoom;
else if (zoom > 1)
this.zoom = 1;
else
this.zoom = zoom;
this.invalidate();
}
private void setImageCenter(PointF posizione) {
if (posizione != null)
image_center = new PointF(posizione.x, posizione.y);
else
image_center = new PointF(bmp.getWidth(), bmp.getHeight());
}
private void prepareImage(Canvas canvas) {
canvas.rotate((float)(bearing - selected_floor.bearing), screen_center.x, screen_center.y);
// scalo l'immagine
image = new Matrix();
image.setScale(zoom, zoom);
Paint drawPaint = new Paint();
drawPaint.setAntiAlias(true);
drawPaint.setFilterBitmap(true);
float centerScaledWidth = image_center.x * zoom / 2;
float centerScaledHeigth = image_center.y * zoom / 2;
image.postTranslate(screen_center.x - centerScaledWidth,
screen_center.y - centerScaledHeigth);
canvas.drawBitmap(bmp, image, drawPaint);
canvas.save();
canvas.restore();
}
private void drawMarkers(Canvas canvas) {
Paint drawPaint = new Paint();
drawPaint.setAntiAlias(true);
drawPaint.setColor(Color.WHITE);
canvas.drawCircle(screen_center.x, screen_center.y, MARKER_DIAMETER + 1, drawPaint);
drawPaint.setColor(Color.RED);
canvas.drawCircle(screen_center.x, screen_center.y, MARKER_DIAMETER, drawPaint);
canvas.save();
canvas.restore();
}
private void setScreenCenter() {
if (screen_center != null)
return;
// recupero la dimensione dello schermo
int screen_height = getMeasuredHeight();
int screen_width = getMeasuredWidth();
if ((screen_height == 0) || (screen_width == 0))
return;
screen_center = new PointF(screen_width / 2, screen_height / 2);
setInitialZoom();
}
#Override
public void draw(Canvas canvas) {
setScreenCenter();
if (selected_floor != null) {
prepareImage(canvas);
drawMarkers(canvas);
}
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = measure(widthMeasureSpec);
int measuredHeight = measure(heightMeasureSpec);
setMeasuredDimension(measuredWidth, measuredHeight);
}
private int measure(int measureSpec) {
int result = 0;
// Decode the measurement specifications.
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.UNSPECIFIED) {
// Return a default size of 200 if no bounds are specified.
result = 200;
} else {
// As you want to fill the available space
// always return the full available bounds.
result = specSize;
}
return result;
}
public void setBearing(float _bearing) {
bearing = _bearing;
}
}
And the touch listener, I've put it in another class.
MapMovement:
public class MapMovement implements OnTouchListener {
...
// We can be in one of these 3 states
private static final int NONE = 0;
private static final int DRAG = 1;
private static final int ZOOM = 2;
private int mode = NONE;
public MapMovement(MapView mapView) {
this.mapView = mapView;
mapView.setOnTouchListener(this);
}
public void setImageCenter(PointF p) {
this.image_center = p;
}
private void dumpEvent(MotionEvent event) {
String names[] = { "DOWN" , "UP" , "MOVE" , "CANCEL" , "OUTSIDE" ,
"POINTER_DOWN" , "POINTER_UP" , "7?" , "8?" , "9?" };
StringBuilder sb = new StringBuilder();
int action = event.getAction();
int actionCode = action & MotionEvent.ACTION_MASK;
sb.append("event ACTION_" ).append(names[actionCode]);
if (actionCode == MotionEvent.ACTION_POINTER_DOWN
|| actionCode == MotionEvent.ACTION_POINTER_UP) {
sb.append("(pid " ).append(
action >> MotionEvent.ACTION_POINTER_ID_SHIFT);
sb.append(")" );
}
sb.append("[" );
for (int i = 0; i < event.getPointerCount(); i++) {
sb.append("#" ).append(i);
sb.append("(pid " ).append(event.getPointerId(i));
sb.append(")=" ).append((int) event.getX(i));
sb.append("," ).append((int) event.getY(i));
if (i + 1 < event.getPointerCount())
sb.append(";" );
}
sb.append("]" );
Log.d("event", sb.toString());
}
#Override
public boolean onTouch(View v, MotionEvent event) {
// Dump touch event to log
dumpEvent(event);
return false;
}
}
And this is the output log when I try to do a "DRAG" on my MapView:
12-24 09:41:58.412: D/event(31342): event ACTION_DOWN[#0(pid 0)=85,248]
12-24 09:42:01.752: D/event(31342): event ACTION_DOWN[#0(pid 0)=106,126]
12-24 09:42:02.466: D/event(31342): event ACTION_DOWN[#0(pid 0)=96,286]
The log code is the same of the test project I downloaded, and this is all the output I can get. No ACTION_UP, no ACTION_MOVEMENT, nothing.
I don't know which is the problem or where it is. All that I want is to move the image in the activity using the touch events, but it seems that I can get only one touch event, ACTION_DOWN.
I've posted all the parts of code where I think it could be the error. If I would have thought that the problem was certainly in one class or layout, I will have posted it and not this bunch of code for which I've lost 15 minutes to edit for you.
Really thank you for the help. If you don't know which is the error is not a problem. But you can't come here and tell me to be "more specific", because if I could be "more specific" I will not be here to ask to you because I will have solved the problem by myself.
The solution was easy, in the MapMovement the onTouch have to return true and not false.
Really thank you for the help. (I'm ironic naturally)
i am able to get my bitmap set of points (as an array) using this link
now my question is how can i bound these points as shape/region. Means when user touched on area of my bounded points, i want to move objects(shape) according to that. Above link return points of colored bitmap (it remove transparent part), only colored part points are return as an array.
This is what my code :
1) CustomSahpe.java
public class CustomShape {
private final Context context;
Bitmap bitmap;
int width, height;
int[] pixels;
private final ArrayList<Point> points = new ArrayList<Point>();
public CustomShape(Context context) {
// TODO Auto-generated constructor stub
// super(context);
this.context = context;
bitmap = BitmapFactory.decodeResource(context.getResources(),
R.drawable.ic_menu_balloon);
width = bitmap.getWidth();
height = bitmap.getHeight();
pixels = new int[width * height];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
getActualBitmap();
}
public ArrayList<Point> getPoints(){
return points;
}
public void getActualBitmap() {
for (int x = 0; x < width; x+=2) {
int firstY = -1, lastY = -1;
for (int y = 0; y < height; y+=2) {
boolean transparent = (pixels[y * width + x] == Color.TRANSPARENT);
if (!transparent) {
if (firstY == -1) {
firstY = y;
}
lastY = y;
}
}
if (firstY != -1) {
points.add(new Point(x, firstY));
points.add(new Point(x, lastY));
}
}
}
}
2) MyShapre.java
class MyShape{
CustomShape customShape ;
Point points[];
private int x, y;
Path path = new Path();
public MyShape(Context context) {
customShape = new CustomShape(ScaleTestActivity.this);
points = new Point[customShape.getPoints().size()];
for(int i=0;i<customShape.getPoints().size();i++){
points[i] = new Point();
points[i] = customShape.getPoints().get(i);
}
}
public Path getPath(){
return path;
}
public void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
Paint paint = new Paint();
paint.setColor(Color.WHITE);
for(int i =0 ;i<points.length;i++){
Point point = new Point(points[i].x + getX(), points[i].y + getY());
path.lineTo(points[i].x, points[i].y);
canvas.drawPoint(point.x,point.y,paint);
}
}
public void setX(int x) {
this.x = x;
}
public int getX() {
return x;
}
public void setY(int y) {
this.y = y;
}
public int getY() {
return y;
}
}
}
3) MainPanel.java
class MainPanel extends View{
Context context;
MyShape myShape;
boolean flag = false;
public MainPanel(Context context) {
super(context);
this.context = context;
myShape = new MyShape(context);
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(Color.RED);
myShape.onDraw(canvas);
}
#Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
int x,y;
x = (int)event.getX();
y = (int)event.getY();
Point point = new Point(x, y);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
myShape.setX(x);
myShape.setY(y);
RectF rectF = new RectF();
Path path = myShape.getPath();
path.computeBounds(rectF, true);
Region region = new Region();
region.setPath(path, new Region((int) rectF.left, (int) rectF.top, (int) rectF.right, (int) rectF.bottom));
if(region.contains(x,y)){
flag = true;
Log.i("System out","onDown");
}
break;
case MotionEvent.ACTION_MOVE:
Log.i("System out","onMove : "+flag);
if(flag){
myShape.setX(x);
myShape.setY(y);
Log.i("System out","onMove");
}
break;
case MotionEvent.ACTION_UP:
// myShape.setX(x);
// myShape.setY(y);
flag = false;
Log.i("System out","onUp");
break;
default:
break;
}
invalidate();
return true;
}
}
4) ScaleTestActivity.java
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new MainPanel(this));
}
I use a Polygon class to detect touches on rotated bitmaps. It's based mostly on information and code from this site http://alienryderflex.com/polygon/. This should work with your code.
public class Polygon {
// Polygon coodinates.
private final int[] polyY, polyX;
// Number of sides in the polygon.
private final int polySides;
/**
* Default constructor.
* #param px Polygon y coods.
* #param py Polygon x coods.
* #param ps Polygon sides count.
*/
public Polygon( final int[] px, final int[] py, final int ps ) {
polyX = px;
polyY = py;
polySides = ps;
}
/**
* Checks if the Polygon contains a point.
* #see "http://alienryderflex.com/polygon/"
* #param x Point horizontal pos.
* #param y Point vertical pos.
* #return Point is in Poly flag.
*/
public boolean contains( final float x, final float y ) {
boolean oddTransitions = false;
for( int i = 0, j = polySides -1; i < polySides; j = i++ ) {
if( ( polyY[ i ] < y && polyY[ j ] >= y ) || ( polyY[ j ] < y && polyY[ i ] >= y ) ) {
if( polyX[ i ] + ( y - polyY[ i ] ) / ( polyY[ j ] - polyY[ i ] ) * ( polyX[ j ] - polyX[ i ] ) < x ) {
oddTransitions = !oddTransitions;
}
}
}
return oddTransitions;
}
}
You could add this constructor to help you convert a Point array to a Polygon object.
public Polygon(Point[] points){
polySides = points.length;
polyY = new int[polySides];
polyX = new int[polySides];
for(int i = 0; i < polySides; i++){
polyY[i] = points[i].y;
polyX[i] = points[i].x;
}
}
You might be able to use it in your MyShape class with this method.
public boolean isTouched(final float X, final float Y){
final Polygon p = new Polygon(points);
return p.contains(X, Y);
}
Now if you have an odd shape you should be able to detect exactly if the use touches it. I have used this method many times.
Are you looking for a way to tell whether a touch event falls on the non-transparent portion of your drawn bitmap? If so, why don't you just map the touch coordinate to the proper pixel on the bitmap and test the color?
And if that's the case, then you can skip all the path clipping stuff, since the link you posted was only doing that to overcome emulator inefficiencies.
It's a bit complicated so I am not going to provide the full source but I will give you an idea.
You need to transfer your shape in to a triangles collection, then on touch find the nearest point of your shape and check if your are inside this point triangle.
For searching and sorting points you can use red-black-red tree structure.
The search algorithm eventually should be at O(log(N)) and creating shape structure should be O(N*Log(N))