Thats pretty cool. I would recommend using mason for generating project template. This way you would be able to separate template logic.
1 Like
Rush does not support the helper blocks as of now. I haven’t started working on it yet since there’s already a lot on my plate, but they will be available as a part of the next release. If someone’s willing to contribute I’d really appreciate that. 
3 Likes
Hello @Taifun
Like i told before rush doesn’t support that , there are problem to import this 
import com.google.appinventor.components.common.OptionList;
import com.google.appinventor.components.common.Default;
We appreciate your effort, keep it up 
3 Likes
Hi, I am new to extension creation.
I am facing a problem when I try to build it.
Here the error
Here Other things
NOTE: I’m using VS code.
Please help me to solve it
Thank you
You have whitespace in your PC’s default username (IT SPACE) and Rush doesn’t quite get along with spaces in file paths. However, you can fix this yourself, read the below post:
This isn’t related to your issue but I’d suggest you use IntelliJ IDEA. VS Code fails to index extension libraries in Rush projects, bombarding you with all sorts of false errors. I want to fix this in a future update, but for now, it’s best to use IntelliJ (or Android Studio).
You have JDK 18 on your PATH. Remove it, install JDK 8, and change JDK_HOME env var.
2 Likes
Can you please share the download url.
**
Make sure that you have restarted the terminal. If it still shows the same error, try building with the -r flag, this will invalidate the caches and build the extension afresh.
2 Likes
It looks like for some reason, Rush is still picking JDK 18 to compile your source files. Are you sure you restarted your terminal? If yes, can you try restarting your computer and then building with the -r flag again?
Now only show build faild
It’s most likely that your Java installation doesn’t have a JDK (even if the folder says otherwise). Try running javac -version in terminal to confirm this, if it says program not found then you don’t have JDK installed.
You can re-download the correct JDK installer from the link posted earlier in this topic, or try this:
3 Likes
if using ide maker extension work but when using rush
i got error with rush what is defferent?
package alfi;
import android.content.Context;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.ScrollView;
import com.google.appinventor.components.annotations.DesignerProperty;
import com.google.appinventor.components.annotations.SimpleEvent;
import com.google.appinventor.components.annotations.SimpleFunction;
import com.google.appinventor.components.annotations.SimpleProperty;
import com.google.appinventor.components.runtime.AndroidNonvisibleComponent;
import com.google.appinventor.components.runtime.Component;
import com.google.appinventor.components.runtime.ComponentContainer;
import com.google.appinventor.components.runtime.EventDispatcher;
import com.google.appinventor.components.runtime.VerticalScrollArrangement;
public class Vsrollhandler extends AndroidNonvisibleComponent implements Component {
public static final int VERSION = 3;
private final ComponentContainer container;
private static final String LOG_TAG = "VerticalScrollHandler";
private int oldScrollY = 0;
private boolean userControl = true;
private boolean scrollBarEnabled = true;
private boolean fadingEdgeEnabled = true;
private int overScrollMode = 1;
private ScrollView scrollView = null;
public Vsrollhandler(ComponentContainer container) {
super(container.$form());
this.container = container;
Context context = (Context) container.$context();
Log.d("VerticalScrollHandler", "VerticalScrollHandler Created");
}
private float deviceDensity() {
return this.container.$form().deviceDensity();
}
private int px2dx(int px) {
return Math.round(px * deviceDensity());
}
private int dx2px(int dx) {
return Math.round(dx / deviceDensity());
}
private float dx2px(float dx) {
return dx / deviceDensity();
}
@SimpleFunction
public void RegisterScrollView(VerticalScrollArrangement verticalScrollArrangement) {
this.scrollView = (ScrollView)verticalScrollArrangement.getView();
this.scrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
public void onScrollChanged() {
Vsrollhandler.this.onScroll();
}
});
this.scrollView.setOnTouchListener(new View.OnTouchListener() {
private boolean touchDownDetected = false;
private int touchDownScrollY = 0;
private int touchDownPointerId;
private float touchDownPointerY;
public boolean onTouch(View v, MotionEvent event) {
int action = event.getActionMasked();
if (action == 0) {
onTouchDown(event);
} else if (action == 2) {
if (onMove(event))
return true;
} else if (action == 1 || action == 3) {
onTouchUp(event);
}
return !Vsrollhandler.this.UserControl();
}
private void onTouchDown(MotionEvent event) {
Vsrollhandler.this.TouchDown();
this.touchDownDetected = true;
this.touchDownScrollY = Vsrollhandler.this.dx2px(Vsrollhandler.this.scrollView.getScrollY());
this.touchDownPointerId = Vsrollhandler.this.dx2px(event.getPointerId(0));
this.touchDownPointerY = Vsrollhandler.this.dx2px(event.getY(0));
}
private boolean onMove(MotionEvent event) {
if (this.touchDownDetected == true) {
int currentScrollY = Vsrollhandler.this.dx2px(Vsrollhandler.this.scrollView.getScrollY());
float currentPointerY = Vsrollhandler.this.dx2px(event.getY(event.findPointerIndex(this.touchDownPointerId)));
if (this.touchDownScrollY <= 0 && currentScrollY <= 0)
return Vsrollhandler.this.OverScrollDown(currentPointerY - this.touchDownPointerY);
int max = Vsrollhandler.this.MaxScrollPosition();
if (this.touchDownScrollY >= max && currentScrollY >= max)
return Vsrollhandler.this.OverScrollUp(this.touchDownPointerY - currentPointerY);
} else {
onTouchDown(event);
return onMove(event);
}
return false;
}
private void onTouchUp(MotionEvent event) {
Vsrollhandler.this.TouchUp();
this.touchDownDetected = false;
}
});
OverScrollMode(OverScrollMode());
ScrollBarEnabled(ScrollBarEnabled());
FadingEdgeEnabled(FadingEdgeEnabled());
}
@SimpleEvent
public void ReachTop() {
EventDispatcher.dispatchEvent(this, "ReachTop", new Object[0]);
}
@SimpleEvent
public void ReachBottom() {
EventDispatcher.dispatchEvent(this, "ReachBottom", new Object[0]);
}
@SimpleEvent
public void ScrollChanged(int scrollY) {
EventDispatcher.dispatchEvent(this, "ScrollChanged", new Object[] { Integer.valueOf(scrollY) });
if (scrollY == 0) {
ReachTop();
} else if (MaxScrollPosition() - ScrollPosition() <= 0) {
ReachBottom();
}
}
public void onScroll() {
int scrollY = dx2px(this.scrollView.getScrollY());
if (scrollY < 0)
scrollY = 0;
if (this.oldScrollY != scrollY) {
ScrollChanged(scrollY);
this.oldScrollY = scrollY;
}
}
@SimpleEvent
public void TouchDown() {
EventDispatcher.dispatchEvent(this, "TouchDown", new Object[0]);
}
@SimpleEvent
public void TouchUp() {
EventDispatcher.dispatchEvent(this, "TouchUp", new Object[0]);
}
@SimpleEvent
public boolean OverScrollDown(float displacement) {
if (displacement > 0.0F)
return EventDispatcher.dispatchEvent(this, "OverScrollDown", new Object[] { Float.valueOf(displacement) });
return false;
}
@SimpleEvent
public boolean OverScrollUp(float displacement) {
if (displacement > 0.0F)
return EventDispatcher.dispatchEvent(this, "OverScrollUp", new Object[] { Float.valueOf(displacement) });
return false;
}
@SimpleProperty
public boolean UserControl() {
return this.userControl;
}
@SimpleProperty
public void UserControl(boolean enable) {
this.userControl = enable;
}
@DesignerProperty(editorType = "boolean", defaultValue = "True")
@SimpleProperty
public boolean ScrollBarEnabled() {
return this.scrollBarEnabled;
}
@SimpleProperty
public void ScrollBarEnabled(boolean enabled) {
this.scrollBarEnabled = enabled;
if (this.scrollView != null)
this.scrollView.setVerticalScrollBarEnabled(enabled);
}
@DesignerProperty(editorType = "boolean", defaultValue = "True")
@SimpleProperty
public boolean FadingEdgeEnabled() {
return this.fadingEdgeEnabled;
}
@SimpleProperty
public void FadingEdgeEnabled(boolean enabled) {
this.fadingEdgeEnabled = enabled;
if (this.scrollView != null)
this.scrollView.setVerticalFadingEdgeEnabled(enabled);
}
@DesignerProperty(editorType = "boolean", defaultValue = "True")
@SimpleProperty
public int OverScrollMode() {
return this.overScrollMode;
}
@SimpleProperty(description = "Can be:\n 0: ALWAYS\n1: OVER SCROLL IF CONTENT SCROLLS\n2: NEVER")
public void OverScrollMode(int mode) {
if (mode != 0 && mode != 1 && mode != 2)
mode = 1;
this.overScrollMode = mode;
}
@DesignerProperty(editorType = "non_negative_integer", defaultValue = "1")
@SimpleProperty
public int ScrollPosition() {
int dxPosition = dx2px(this.scrollView.getScrollY());
if (dxPosition < 0)
return 0;
if (dxPosition > MaxScrollPosition())
return MaxScrollPosition();
return dxPosition;
}
@SimpleProperty
public int MaxScrollPosition() {
View view = this.scrollView.getChildAt(this.scrollView.getChildCount() - 1);
return dx2px(view.getBottom() - this.scrollView.getHeight());
}
@SimpleFunction
public void ScrollTop() {
if (this.scrollView == null)
return;
this.scrollView.fullScroll(33);
}
@SimpleFunction
public void ScrollBottom() {
if (this.scrollView == null)
return;
this.scrollView.fullScroll(130);
}
@SimpleFunction
public void ArrowScrollUpward() {
if (this.scrollView == null)
return;
this.scrollView.arrowScroll(33);
}
@SimpleFunction
public void ArrowScrollDownward() {
if (this.scrollView == null)
return;
this.scrollView.arrowScroll(130);
}
@SimpleFunction
public void PageScrollUpward() {
if (this.scrollView == null)
return;
this.scrollView.pageScroll(33);
}
@SimpleFunction
public void PageScrollDownward() {
if (this.scrollView == null)
return;
this.scrollView.pageScroll(130);
}
@SimpleFunction
public void ScrollTo(int px) {
if (this.scrollView == null)
return;
this.scrollView.scrollTo(0, px2dx(px));
}
@SimpleFunction
public void ScrollBy(int px) {
if (this.scrollView == null)
return;
this.scrollView.scrollBy(0, px2dx(px));
}
@SimpleFunction
public void SmoothScrollTo(int px) {
if (this.scrollView == null)
return;
this.scrollView.smoothScrollTo(0, px2dx(px));
}
@SimpleFunction
public void SmoothScrollBy(int px) {
if (this.scrollView == null)
return;
this.scrollView.smoothScrollBy(0, px2dx(px));
}
}
erro Annotation@SimpleEventcan't be used on element "ReachTop". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "ReachBottom". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "ScrollChanged". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "TouchDown". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "TouchUp". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "OverScrollDown". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleEventcan't be used on element "OverScrollUp". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "RegisterScrollView". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ScrollTop". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ScrollBottom". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ArrowScrollUpward". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ArrowScrollDownward". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "PageScrollUpward". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "PageScrollDownward". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ScrollTo". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "ScrollBy". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimpleFunctioncan't be used on element "SmoothScrollTo". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimplePropertycan't be used on element "ScrollPosition". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@SimplePropertycan't be used on element "MaxScrollPosition". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@DesignerPropertycan't be used on element "ScrollBarEnabled". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@DesignerPropertycan't be used on element "FadingEdgeEnabled". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@DesignerPropertycan't be used on element "OverScrollMode". It can only be used on members of class "alfi.Alfi".
│ erro Annotation@DesignerPropertycan't be used on element "ScrollPosition". It can only be used on members of class "alfi.Alfi".
└ failed