problem about ontouchlistener-Collection of common programming errors
pasta12
android drag-and-drop imageview android-imageview ontouchlistener
SOLVEDSee the simple solution in the accepted answer I posted below.The Original ProblemSo I’ve created an onTouchListener for dragging Views. Images drag smoothly if I use getRawX() and getRawY(). The problem with that is the image will jump to the second pointer when you place a second pointer down then lift the first pointer.This onTouchListener attempts to fix that issue by keeping track of the pointerId. The problem with this onTouchListener is while dragging an ImageView, the ImageView jum
Mathew
android ontouchlistener
I have tried to launch this code, in order to print lines onTouch. The code contains no error, but when i launch it…the emulator shutdown unexpectedly. Can you help me figure out the problem?import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.view.Display; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListen
Bernd Meyer
android button media-player ontouchlistener
I want to create a button during run time. The button should start playing a sound when it is pressed and stop playing when the the user stops pressing the button.Browsing the web and Stack Overflow I come up with this code:// Create a new button and place it into a table rowLinearLayout lnr = (LinearLayout) findViewById(R.id.tableRow3);Button b1 = new Button(this);lnr.addView(b1);// Associate the eventb1.setOnTouchListener(new OnTouchListener() {MediaPlayer mp = new MediaPlayer();@Overridepubli
vatsalya_mathur
android android-fragments ontouchlistener
I am implementing an OnTouch listener through a fragment class.public class ButtonFragment extends Fragment implements OnTouchListenerthe Overriden onTouch function looks like.@Overridepublic boolean onTouch(View v, MotionEvent event) {// TODO Auto-generated method stubswitch(v.getId()){case R.id.buttonUp : {mAction = new Thread(){@Overridepublic void run(){try {ChartJNI3D.cameraPos(1.0f, ‘U’);mAction.wait();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();
user1818702
android ontouchlistener
I am trying to start voice recognition on a touch but the issue is OnTouchListener is not called when user touches the screenI tried to put breakpoint in function but it does not come in function at allOn my laptop the Logcat is not working so I cant use log and thus using a toast to see if the function is called.Code is as below. can anyone please help why this function is not called on touch??Updated:I am calling setOnTouchListener in OnCreate and now after using view my application is crashin
Yharooer
java android ontouchlistener
I was wondering how one uses OnTouchListener. (I’m using Android Studio.)This is my code and when I press the “Vibrate” button, the button image doesn’t change to it’s pressed state:vibrateButton = (Button) findViewById(R.id.button_vibrate);vibrationInstance = (Vibrator) getSystemService(this.VIBRATOR_SERVICE);vibrateButtonPressed = false;if (!(vibrationInstance.hasVibrator())) {vibrateButton.setEnabled(false);}vibrateButton.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean
Marshall
android ontouchlistener
I am making an app where when you hold a button, a textview with numbers increases (until you let go).I tried using the OnTouch, but that doesn’t increase the number unless you move your finger in the button. I tried looking at some answered questions here in stackoverflow and implementing the solutions suggested, but it seems to just crash now…The ontouch listener:upb.setOnTouchListener(new View.OnTouchListener(){@Overridepublic boolean onTouch(View v, MotionEvent event) {// TODO Auto-generat
Carrotman
java android listview multi-touch ontouchlistener
I came across a crash in Android 3.2 when trying to test out Multi-touching with a list view. I can reproduce the exception with a simple layout containing only a ListView and less than 20 lines of Java code. Anyone’s advice on the matter would be greatly appreciated.What I’m trying to do:I want to have the users be able to check many items on the ListView by dragging without getting in the way of scrolling the ListView, so I figured users would use one finger to scroll the ListView, and click a
DDL
android layout view onclicklistener ontouchlistener
I wanted to test how to change views dinamycally on Android, without starting another activity.So I wrote this code and it crashed whenever I implemented OnTouchListener and OnClickListener together but if I used just one of them, it worked fine (although it didnt do what I wanted it to do).public class Test extends Activity implements OnTouchListener, OnClickListener {ImageView image; Button ret;@Override public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setCon
user1743643
android button crash ontouchevent ontouchlistener
im new with Android, but have experiance in c# and c++.Im just trying to display whenever a button is pressed. I searched and found out, that the onClick event cant do that, therefore i use the onTouch-event.For the first button it was fine and worked. Then I added a sencond and a third one, but now the application crashes, when I execute it.If I delete the second and the third button with their events, the application still crashes. Not before I delete the first Button and his event the applica
Doomic
android ontouchevent ontouchlistener
I have a view in a linearlayout. When the view is longpressed the view will be removed from this linearlayout and placed, on the same position of the screen, to a relative layout. On this way a can move the view over the screen with my finger.it almost works: i got the longpress event working (remove the view and place the view to the relativelayout). after that i add an ontoucheventlistener so my view stays with my finger, but only for a second. the last time the touchevent is fired i got “Moti
user1822729
android android-imageview ontouchlistener
I have a layout where 4 image view will be there. 3 image view will have the image of ball,cat and apple image. I need to drag any 1 of the 3 and drop in the 4th image view. Issue : When I start drag any one of the 3 image the system crashes and reboots. Could you please guide me to resolve this issue ?Java code:package com.example.draganddrop;import android.os.Bundle; import android.annotation.TargetApi; import android.app.Activity; import android.content.ClipData; import android.util.Log; im
Gangadhar Nimbally
android android-listview ontouchlistener
I am trying to swipe delete on ListView ItemonFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY), iam getting null at MotionEvent e1 on swinpingPlease help me, thnks in advance@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {Log.e(THIS_FILE, “======onFling “+REL_SWIPE_MAX_OFF_PATH+” , “+e1+” , “+e2);if (Math.abs(e1.getY() – e2.getY()) > REL_SWIPE_MAX_OFF_PATH)return false;if (e1.getX() – e2.getX() > REL_SWIPE_MIN_DISTANC
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