scroll change listener on blackberry - blackberry

When I execute the following code on a simulator it throws stackoverflow error.
I think the error came for, Each newhorizontalScroll value when I scroll.
How to avoid it or how to calculate the final horizontal scroll value?
int customfiledwidth = Display.getWidth()/3;
HorizontalFieldManager horizontalScrollLayout = new HorizontalFieldManager(HorizontalFieldManager.HORIZONTAL_SCROLL)
horizontalScrollLayout.setScrollListener(this);
// i add number of customfield on horizontalscrolllayout.....
public void scrollChanged(Manager manager, int newHorizontalScroll,int newVerticalScroll)
{
{
horizontalScrollLayout.setHorizontalScroll(newHorizontalScroll);
int fieldIndex =horizontalScrollLayout.getFieldAtLocation(newHorizontalScroll+customfieldwidth,0);
Field f = horizontalScrollLayout.getField(fieldIndex);
f.setFocus();
invalidate();
}}
}

You're getting into an infinite loop pretty much by calling setHorizontalScroll() on the same Field that you are listening to its scroll. I would remove this line and see if your code works.

Related

Unable to scroll Horizontally in Appium using UiScrollable and TouchActions

I am trying to scroll till the Gift Card option on Make My Trip Home Page and then Click it. So far I have tried below two approaches without success. I am also attaching the screenshot of the App Home Page for clear understanding.
Approach 1 : Using AndroidUIAutomator to scroll to particular element.
driver.findElement(MobileBy.AndroidUIAutomator("new UiScrollable(new UiSelector()"
+ ".resourceId(\"com.makemytrip:id/rvHomePageIcon\"))"
+ ".scrollIntoView(new UiSelector().textMatches(\"Gift Cards\")"
+ ".instance(0));"));
Result : This does not scroll but clicks on Homestays option on the app.
Approach 2:
WebElement eleOne = driver.findElement(By.xpath("//*[#text='Flights']"));
WebElement eleTwo = driver.findElement(By.xpath("//*[#text='Gift Cards']"));
TouchAction t = new TouchAction(driver);
t.longPress(longPressOptions().withElement(element(eleOne))
.withDuration(ofSeconds(8))).moveTo(element(eleTwo))
.release().perform();
Result : This throws No Such Element Found exception as eleTwo is currently not in frame. I tried to tweak this approach and enter eleTwo as an element which is visible on screen just to see if the scrolling works and it did work.
But Somehow I am not sure on how to handle it for elements which are not visible on screen.
I would like to scroll the top options list and then click on GiftCard which is the last option on top widget menu.
I am using AppiumDriver with Java-Client 7.3.0.
You can try this, With uiAutomator2 (set scrollable as true):
public void scrollByID(String Id, int index) {
try {
driver.findElement(MobileBy.AndroidUIAutomator("new UiScrollable(new UiSelector().scrollable(true).instance(0)).scrollIntoView(new UiSelector().resourceId(\""+Id+"\").instance("+index+"));"));
} catch (Exception e) {
e.printStackTrace();
}
}
You can scroll Horizontal and vertical based on screen size with Touch Action. Here is sample code.
public void scrollHorizontally() {
int y = driver.manage().window().getSize().height / 2;
int start_x = (int) (driver.manage().window().getSize().width * 0.2);
int end_x = (int) (driver.manage().window().getSize().width * 0.8);
TouchAction dragNDrop = new TouchAction(driver)
.press(PointOption.point(start_x, y)).waitAction(WaitOptions.waitOptions(Duration.ofMillis(500)))
.moveTo(PointOption.point(end_x, y))
.release();
dragNDrop.perform();
}
I have written one detailed answer to scroll with different approaches. You can check here:
How to reach the end of a scroll bar in appium?

How to scroll top to botton using Android driver

I tried scrollTo() to scroll my app page using andriod driver, but not worked because it is deprecated from javaclient 4.1.2.
I have gone through below link but couldn't find any solution .
How can I scroll an android app page from top to bottom using appium driver?
Please provide me solution
My example is from python but it will work for Java as well just use java syntax to find element like
driver.find_element_by_android_uiautomator('new UiScrollable(new UiSelector().scrollable(true).instance(0)).scrollIntoView(new UiSelector().textContains("**/Put some text which is at bottom of screen to scroll screen/**").instance(0))')
for more details you can go-through the https://developer.android.com/reference/android/support/test/uiautomator/UiScrollable.html and https://developer.android.com/training/testing/ui-testing/uiautomator-testing.html
User swipe method as below:
driver.swipe(startx, starty, endx, endy, duration);
e.g. for swipe down
driver.swipe(100, 100, 100, 900, 3000);
According you can change the x and y co-ordinates.
you can try this below code, i was trying this code on settings page..
AppiumDriver driver = new AndroidDriver(new URL("http://127.0.0.1:4723/wd/hub"), cap1);
driver.scrollTo("About phone");
Pass the String which is present in the bottom of your app page.
driver.scrollTo("Enter your value");
Use appropriate wait Statements.
#Test
public void testScroll()throws Exception
{
for(int i=0;i<4;i++)
{
Thread.sleep(2000);
if (driver.findElement(By.name("end_item")).isDisplayed())
{
driver.findElement(By.name("end_item")).click();
break;
}
else
{
verticalScroll();
}
}
}
public void verticalScroll()
{
size=driver.manage().window().getSize();
int y_start=(int)(size.height*0.60);
int y_end=(int)(size.height*0.30);
int x=size.width/2;
driver.swipe(x,y_start,x,y_end,4000);
}
The above example works with vertical scroll and it is based on the example given at this blog for horizontal scroll http://qaautomated.blogspot.in/2016/02/how-to-do-horizontal-scroll-in-appium.html I hope this works for you.
We can use the following the code snippet to scroll down but please make sure you catch the exceptions.
try {
driver.findElementByAndroidUIAutomator("new UiScrollable(new UiSelector()).scrollIntoView(text(\"\"))");
}catch(Exception e) {
System.out.println("whatever");
}

how to disable endless scroll in BasicEditField

HI all i have implement Custom BasicEditField to set hint and to input long text .
please see my code
vfm_searchBox = new VerticalFieldManager()
{
//Main.Quicksearchinput is background image for inputtext
public void paint(Graphics g)
{
g.setColor(Color.WHITE);
g.drawBitmap(0,0,Main.Quicksearchinput.getWidth(),Main.Quicksearchinput.getHeight(),Main.Quicksearchinput,0,0);
super.paint(g);
}}
There is one HorizontalFieldManager to scroll text.
hfm_searchBox = new HorizontalFieldManager(Manager.HORIZONTAL_SCROLL) ;
There is one Basiceditfield to input text .
txtSearch = new BasicEditField(BasicEditField.NO_NEWLINE)
{
public void paint(Graphics g)
{
if(super.getText().length() == 0)
{
g.setColor(Color.GRAY);
g.setFont(g.getFont().derive(Font.PLAIN,18));
g.drawText("Enter Event title or subtitle", 0, 0);
super.paint(g);
}
else
{
g.setColor(Color.BLACK);
super.paint(g);
}
}};
The BasicEditField looks nice with Backgroundimage and hint but problem is that when i am nothing input in textfield it is working as endless scroll . i have set Horizontalfield width depend on BasiceditField but its width by default set to unlimited .
hfm_searchBox.add(txtSearch);
vfm_searchBox.add(hfm_searchBox);
how to prevent endless scroll ?
Thanks in Advance !!!
What is the HorizontalFieldManager's virtual width? This refers to the scrollable space whereas the width refers to the extent on the screen. You can try extending HorizontalFieldManager and overriding the sublayout method, calling setVirtualExtent in it.
As Tamar said, the Field's Virtual Width is the key concept to keep track of.
You can see my solution to a very similar question here. I provide a full code example that's probably not too far from what you're trying to do. The code I use goes a step further, and dynamically limits scrolling only to the end of where the text currently reaches. If you don't do this, and simply set one constant virtual width, then you can have the field actually scroll too far to the right. By dynamically calling setVirtualExtent(), you always get just enough scrolling, but not too much.

scroll change listener on blackberry

I already posted my question below link..
scroll change listener on blackberry
The error has been resolved.
But i need to move the field center position after scrolling . pls give any idea... Thanks in advance...
there are number of fields add in the scroll bar...
after scrolling its show like this.
But i need to move the field center position like this.
Pls give any idea..
Looks like you just need some flag to detect whether this is a sroll event originated by user, or from the code (programmatically).
If you originate a scroll event programmatically, then set some boolean, let's call it ignoreScrollEvent, to true. Smth like this (pseudo code):
private boolean ignoreScrollEvent = false;
public void scrollChanged(Manager manager, int newHorizontalScroll,
int newVerticalScroll) {
if (!ignoreScrollEvent) {
ignoreScrollEvent = true;
// recalculate the newHorizontalScroll so the field in the focus
// gets in the middle
horizontalScrollLayout.setHorizontalScroll(newHorizontalScroll);
int fieldIndex = horizontalScrollLayout.getFieldAtLocation(
newHorizontalScroll + customfieldwidth, 0
);
Field f = horizontalScrollLayout.getField(fieldIndex);
f.setFocus();
invalidate();
} else {
ignoreScrollEvent = false;
}
}

Add vertical spacing between fields on VerticalFieldManager

I am adding fields to a VerticalFieldManager. Is there a method of adding vertical spacing between fields?
There's several solutions to this, one being that you can create a custom field to be used as a spacer between your other fields.
private static class SpacerField extends Field
{
private int spacerWidth;
private int spacerHeight;
private SpacerField(int width, int height) {
spacerWidth = width;
spacerHeight = height;
}
protected void layout(int width, int height) {
setExtent(getPreferredWidth(), getPreferredHeight());
}
protected void paint(Graphics g) {
// nothing to paint; this is a blank field
}
public int getPreferredHeight() {
return spacerHeight;
}
public int getPreferredWidth() {
return spacerWidth;
}
}
//...
// Usage
add(new LabelField("Before Spacer"));
add(new SpacerField(0, 100));
add(new LabelField("After Spacer"));
Setting the padding or margins of your contained fields is another solution. It's up to you on what you think is the best way of managing things.
There are more elogant ways of doing this using the setPositionChild() methods but a simple work around is to give your fields padding using the setPadding(int top, int right, int bottom, int left) method.
myField.setPadding(5, 0, 5, 0);
I actually find that most times, what you want to do is call setMargin() on the vertical field manager's child fields, not sePadding(). I certainly think creating a SpacerField is now unnecessarily complex.
myField.setMargin(5, 0, 5, 0);
It depends on which kind of child field we're talking about, and how its size is specified, but in general, setPadding() will actually make the field bigger, which could have a visual impact, depending on how the field's background and border are drawn. setMargin() does not make the field any bigger, which I think is more consistent with what the question is asking.
See Mr Vincenzo's answer here, with pictures!
Note: setMargin() and setPadding() were officially added to the Field API relatively late in the BlackBerry Java evolution, but were available as undocumented methods before that.
Another Note: I have seen strange problems when using setMargin(), like the one described in this question. In that case, I did have to resort to one of the other two solutions here.

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