Develop Reference

setOnTouchListener on FloatingActionMenu Not working properly

I'm using FloatingActionMenu. In the below picture I have color the background with green color so it easy to understand the problem
I want to move the FloatingActionMenu when the user drags the pink color button. I wrote a function to move the button by getting the motion event as below
fab1.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View view, MotionEvent motionEvent) {
ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) view.getLayoutParams();
int action = motionEvent.getAction();
if (action == MotionEvent.ACTION_DOWN) {
downRawX = motionEvent.getRawX();
downRawY = motionEvent.getRawY();
dX = view.getX() - downRawX;
dY = view.getY() - downRawY;
return true; // not Consumed for ripple effect
} else if (action == MotionEvent.ACTION_MOVE) {
viewWidth = view.getWidth();
viewHeight = view.getHeight();
View viewParent = (View) view.getParent();
parentWidth = viewParent.getWidth();
parentHeight = viewParent.getHeight();
newX = motionEvent.getRawX() + dX;
newX = Math.max(layoutParams.leftMargin, newX); // Don't allow the FAB past the left hand side of the parent
newX = Math.min(parentWidth - viewWidth - layoutParams.rightMargin, newX); // Don't allow the FAB past the right hand side of the parent
newY = motionEvent.getRawY() + dY;
newY = Math.max(layoutParams.topMargin, newY); // Don't allow the FAB past the top of the parent
newY = Math.min(parentHeight - viewHeight - layoutParams.bottomMargin, newY); // Don't allow the FAB past the bottom of the parent
view.animate()
.x(newX)
.y(newY)
.setDuration(0)
.start();
return true; // Consumed
} else if (action == MotionEvent.ACTION_UP) {
float upRawX = motionEvent.getRawX();
float upRawY = motionEvent.getRawY();
float upDX = upRawX - downRawX;
float upDY = upRawY - downRawY;
if (newX > ((parentWidth - viewWidth - layoutParams.rightMargin) / 2)) {
newX = parentWidth - viewWidth - layoutParams.rightMargin;
} else {
newX = layoutParams.leftMargin;
}
view.animate()
.x(newX)
.y(newY)
.setInterpolator(new OvershootInterpolator())
.setDuration(300)
.start();
if (Math.abs(upDX) < CLICK_DRAG_TOLERANCE && Math.abs(upDY) < CLICK_DRAG_TOLERANCE) { // A click
if (customClickListener != null) {
customClickListener.onClick(view);
}
return false;// not Consumed for ripple effect
} else { // A drag
return false; // not Consumed for ripple effect
}
} else {
return true;
}
}
});
But It won't be working as my requirement. I want to move the button when I'm drag from the pink color button. But it moving when I drag from the green color background. Not from the pink color area. How to add touchlistener only to the round icon only?
current XML file is
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<com.github.clans.fab.FloatingActionMenu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:fab="http://schemas.android.com/tools"
android:id="#+id/fab_menu_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="#color/colorPrimary"
app:fab_colorNormal="#DA4336"
app:fab_colorPressed="#E75043"
app:fab_colorRipple="#99FFFFFF"
app:fab_shadowColor="#66000000"
app:fab_showShadow="true"
app:menu_backgroundColor="#DA4336"
app:menu_labels_colorNormal="#333333"
app:menu_labels_colorPressed="#444444"
app:menu_labels_colorRipple="#66FFFFFF"
app:menu_labels_ellipsize="end"
app:menu_labels_maxLines="-1"
app:menu_labels_position="left"
app:menu_labels_showShadow="true"
app:menu_labels_singleLine="true"
app:menu_openDirection="up">
<com.github.clans.fab.FloatingActionButton
android:id="#+id/fab_submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/fab_add"
app:fab_label="kkjj"
app:fab_size="mini" />
<com.github.clans.fab.FloatingActionButton
android:id="#+id/fab_scan_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/fab_add"
app:fab_label="lljjl"
app:fab_size="mini" />
<com.github.clans.fab.FloatingActionButton
android:id="#+id/fab_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/fab_add"
app:fab_label="jkjkjkj"
app:fab_size="mini" />
</com.github.clans.fab.FloatingActionMenu>
</RelativeLayout>

Try to use event.getX() instead of getRawX().
Code below works for me:
// below are declared as fields
float downX;
float downY;
float dx;
float dy;
// set on touch listener
fab.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
downX = event.getX();
downY = event.getY();
break;
case MotionEvent.ACTION_MOVE:
dx += event.getX() - downX;
dy += event.getY() - downY;
fab.setTranslationX(dx);
fab.setTranslationY(dy);
break;
case MotionEvent.ACTION_UP:
fab.performClick();
break;
}
return true;
}
});
Read your code again, seems like not only you want to drag the fab, but also you want to limit it to its parent area, so you need to do the limitation in ACTION_MOVE, by comparing the fab's bound and its parent's boundary.

Scrolling and Swiping in Android

I have layout with ViewPager and ScrollView like below:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v4.view.ViewPager
android:id="#+id/now_playing_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<ScrollView
android:id="#+id/lyrics_scroll_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</ScrollView>
</RelativeLayout>
Now,Textview is Scrolling as expected But on swiping viewpager is not working as it is below ScrollView.
So,when Scrolled ScrollView should work and when swiped Viewpager should.
In Short,what I want is:
moved in Y Direction--->ScrollView
moved in X Direction--->ViewPager
Code below detects that i m moving in X-direction:
public boolean onInterceptTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mLastX = event.getX();
mLastY = event.getY();
mStartX = mLastX;
break;
case MotionEvent.ACTION_MOVE:
float x = event.getX();
float y = event.getY();
float xDelta = Math.abs(x - mLastX);
float yDelta = Math.abs(y - mLastY);
float xDeltaTotal = x - mStartX;
if (xDelta > yDelta && Math.abs(xDeltaTotal) > mTouchSlop) {
// moved in X Direction
mStartX = x;
return true;
}
break;
}
return false;
}
Please help me out to achieve desired result

Android viewflipper not working with drawer

I am trying to integrate viewflipper in activity which already have navigation drawer, but viewflipper not working, although navigation drawer is working. theme is to swipe a layout and show data. Below is my code
xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000"
tools:context="com.inabia.dailyayat.Activities.MainActivity">
<ViewFlipper
android:id="#+id/viewflipper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="6dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/txtayat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:gravity="center"
android:shadowColor="#ffffff"
android:shadowDx="3"
android:shadowDy="-3"
android:shadowRadius="1.5"
android:textColor="#ffd700"
android:textSize="40sp"
android:textStyle="bold" />
</LinearLayout>
</ViewFlipper>
</RelativeLayout>
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#d3d3d3"
android:cacheColorHint="#00000000"
android:choiceMode="singleChoice"
android:divider="#ffffff"
android:dividerHeight="1px" />
</android.support.v4.widget.DrawerLayout>
and java code
private ViewFlipper viewFlipper;
private float lastX;
viewFlipper = (ViewFlipper) findViewById(R.id.viewflipper);
public boolean onTouchEvent(MotionEvent touchevent) {
switch (touchevent.getAction()) {
case MotionEvent.ACTION_DOWN:
lastX = touchevent.getX();
break;
case MotionEvent.ACTION_UP:
float currentX = touchevent.getX();
// Handling left to right screen swap.
if (lastX < currentX) {
// If there aren't any other children, just break.
if (viewFlipper.getDisplayedChild() == 1)
break;
// c.add(Calendar.DAY_OF_MONTH,-1);
// formattedDate = df.format(c.getTime());
// txt1.setText(formattedDate);
// Next screen comes in from left.
viewFlipper.setInAnimation(this, R.anim.slide_in_from_left);
// Current screen goes out from right.
viewFlipper.setOutAnimation(this, R.anim.slide_out_to_right);
// Display next screen.
viewFlipper.showNext();
}
// Handling right to left screen swap.
if (lastX > currentX) {
// If there is a child (to the left), kust break.
if (viewFlipper.getDisplayedChild() == 1)
break;
// c.add(Calendar.DAY_OF_MONTH,1);
// formattedDate = df.format(c.getTime());
// txt1.setText(formattedDate);
// Next screen comes in from right.
viewFlipper.setInAnimation(this, R.anim.slide_in_from_right);
// Current screen goes out from left.
viewFlipper.setOutAnimation(this, R.anim.slide_out_to_left);
// Display previous screen.
viewFlipper.showPrevious();
}
break;
}
return false;
}

Try to overide dispatchTouchEvent rather then onTouchEvent and use GestureDetector.SimpleOnGestureListener to detect all touch events on device screen hope it will work for you.
Code :
CustomGestureDetector.java
class CustomGestureDetector extends GestureDetector.SimpleOnGestureListener {
#Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
// Swipe left (next)
if (e1.getX() > e2.getX()) {
viewFlipper.setInAnimation(context, R.anim.left_in);
viewFlipper.setOutAnimation(context, R.anim.left_out);
viewFlipper.showNext();
}
// Swipe right (previous)
if (e1.getX() < e2.getX()) {
viewFlipper.setInAnimation(context, R.anim.right_in);
viewFlipper.setOutAnimation(context, R.anim.right_out);
viewFlipper.showPrevious();
}
return super.onFling(e1, e2, velocityX, velocityY);
}
#Override
public boolean onDoubleTap(MotionEvent e) {
Log.d("Tap", "Double tap");
return super.onDoubleTap(e);
}
#Override
public boolean onSingleTapUp(MotionEvent e) {
return false;
}
}
dispatchTouchEvent :
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
mGestureDetector.onTouchEvent(ev);
return super.dispatchTouchEvent(ev);
}
and in your onCreate method of activity call GestureDetector like this :
CustomGestureDetector customGestureDetector = new CustomGestureDetector();
mGestureDetector = new GestureDetector(this, customGestureDetector);

Unable to draw line over gridview elements properly through textview cells in Android

I would like to implement Word Search app. As part of implementation i have come across canvas and drawing line over grid view cells( letters that form the word) to indicate that user is touching finger over letters to form the word.
I have succeeded partially as of now i can draw a line over letters of grid view but the line is not through center of views of grid View.
Please can anyone assist me with your valuable suggestions .
Have a glance on below screen shot to get a clear idea.
Edited: I'm posting code to get an idea of how I'm implementing it.
xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/root"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#fff" >
<RelativeLayout
android:id="#+id/topbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#A9E2F3" >
<LinearLayout
android:id="#+id/topbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#336699"
android:orientation="horizontal" >
<Button
android:id="#+id/btn_pause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Pause" />
<Chronometer
android:id="#+id/chronometer1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Chronometer" />
<TextView
android:id="#+id/counter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="20sp"
android:typeface="serif" />
</LinearLayout>
</RelativeLayout>
<FrameLayout
android:id="#+id/gridFrame"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/wTable"
android:layout_below="#+id/textdisplay" >
<GridView
android:id="#+id/grid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E7E8E9"
android:fitsSystemWindows="true"
android:gravity="center"
android:horizontalSpacing="10sp"
android:numColumns="10"
android:padding="1dp"
android:stretchMode="columnWidth"
android:verticalSpacing="10sp" >
</GridView>
</FrameLayout>
<GridView
android:id="#+id/wTable"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#fff"
android:numColumns="3"
android:orientation="vertical" />
</RelativeLayout>
The paint is drawing over frame layout which contains grid view. Grid view elements are printed through custom text view file.
To draw a line i have used LineView.java
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.Log;
import android.view.View;
public class LineView extends View {
public static final float LINE_WIDTH = 30.0f;
public Paint paint = new Paint();
protected Context context;
public float startingX, startingY, endingX, endingY;
public LineView(Context context) {
super(context);
this.context = context;
paint.setColor(Color.parseColor("#2E9AFE"));
paint.setStrokeWidth(LINE_WIDTH);
paint.setStrokeJoin(Paint.Join.ROUND);
paint.setStrokeCap(Paint.Cap.ROUND);
paint.setDither(true);
paint.setAntiAlias(true);
paint.setStyle(Paint.Style.FILL);
paint.setAlpha(90);
}
public void setPoints(float startX, float startY, float endX, float endY) {
startingX = startX;
startingY = startY;
endingX = endX;
endingY = endY;
invalidate();
}
#Override
public void onDraw(Canvas canvas) {
Log.e("LINEVIEW", "startingX" + startingX + " startingY:" + startingY);
Log.e("LINEVIEW", "endingX" + endingX + " endingY:" + endingY);
// canvas.drawLine(startingX, startingY, endingX, endingY, paint);
canvas.drawLine(startingX, startingY, endingX, endingY, paint);
}
}
Main Activity where logic is implemented:
Written only the required logic here.
newGrid = (GridView) findViewById(R.id.grid);
newGrid.setAdapter(new FormTheGridLetters());
newGrid.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
// if (mp.isPlaying()) {
// mp.stop();
// }
int action = event.getActionMasked();
switch (action) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
// data
PaintViewHolder newPaint = new PaintViewHolder();
newPaint.DrawLine = new LineView(WordSearchActivity.this);
gridFrame.addView(newPaint.DrawLine);
buildWord = new StringBuilder();
int x = (int) event.getX();
int y = (int) event.getY();
// test = new LineView(WordSearchActivity.this);
int position = newGrid.pointToPosition(x, y);
Point one,
two;
if (position != GridView.INVALID_POSITION) {
v.getParent().requestDisallowInterceptTouchEvent(true);
cellView = (TextView) newGrid.getChildAt(position);
String a = cellView.getText().toString();
// Log.v(">>>>><<<<<<<????????", a.toString());
switch (action) {
case MotionEvent.ACTION_DOWN:
startX = event.getX();
startY = event.getY();
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
// Checking the list for formed word ;
//if found that is painted
for (int i1 = 0; i1 < Ans.size(); i1++)
{
if (formedWord.equals(Ans.get(i1)))
{
answerAdapter.notifyDataSetChanged();
newPaint.DrawLine.setPoints(startX, startY, x, y);
// Painted the letters by passing starting and ending points
}
}
break;
}
} else {
if (mSelecting) {
mSelecting = false;
}
}
break;
case MotionEvent.ACTION_CANCEL:
mSelecting = false;
break;
}
return true;
}
});

I don't know if you fix the issue but I will answer anyway for the people that may have these kind of problems. After you recieve the valid position, you can get the center of the view and you can set these values as beginning of the draw.
Like this:
if (position != GridView.INVALID_POSITION) {
MyList.add(position);
v.getParent().requestDisallowInterceptTouchEvent(true);
TextView cellView = (TextView) gridView.getChildAt(position);
centreX = cellView.getX() + cellView.getWidth() / 2;
centreY = cellView.getY() + cellView.getHeight() / 2;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
newPaint.DrawLine.touch_start(x, y,centreX,centreY);
I have tried this code and it is working. I don't think that you need anymore but I have joined this site recently so maybe it will help other people. I can post more code if you want but
newPaint.DrawLine.touch_start(x, y,centreX,centreY);
is the trick for that issue.
Hope this helps.

Why my animation does not stop in the to-x given value?

I want to move a view on touch and when the user unholds this view, it is started an animation which moves my view to the end of its parent.
This is my layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/time_view"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<AbsoluteLayout
android:id="#+id/slide_layout"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_margin="20dp"
android:background="#0000FF" >
<View
android:id="#+id/slide_to_pause"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#00FFFF" />
</AbsoluteLayout>
</RelativeLayout>
This is how I set the view to move in my onCreate:
slideView = ((View) findViewById(R.id.slide_to_pause));
slideView.setOnTouchListener(this);
This is how I move the view and starts the animation:
#Override
public boolean onTouch(View view, MotionEvent event) {
AbsoluteLayout.LayoutParams layoutParams = (AbsoluteLayout.LayoutParams) view.getLayoutParams();
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
mX = event.getRawX();
break;
case MotionEvent.ACTION_UP:
int endOfAnimation = findViewById(R.id.slide_layout).getWidth() - view.getWidth();
mSlideAnimation = new TranslateAnimation(0, endOfAnimation - layoutParams.x, 0, 0);
mSlideAnimation.setDuration(1000);
view.startAnimation(mSlideAnimation);
Log.d(TAG, "endOfAnimation = " + layoutParams.x + " | " + endOfAnimation);
break;
case MotionEvent.ACTION_MOVE:
layoutParams.x = (int) event.getRawX();
view.setLayoutParams(layoutParams);
break;
}
return true;
}
The problem is that when the view arrives at the end it comes back to a point in the midle of the screen, which is the point where the user unholds the view.
How can I fix this?
Thank you!

You need to use
mSlideAnimation.setFillAfter(true);
to make it not revert back to the start.
If that doesn't work you might have to follow the suggestion on Animation.setFillAfter/Before - Do they work/What are they for?

You can simulate animation manually (move views yourself, without animation framework) by using
View.offsetLeftAndRight(int offset)
View.offsetTopAndBottom(int offset)