I changed the xml in the following: <view android:id="@+id/ViewPaint" class="com.example.android.helloactivity.HelloActivity$DrawingView" android:layout_width="wrap_content" android:layout_height="wrap_content"/>
This makes the app crash. Changing it into <View android:id="@+id/ViewPaint" class="com.example.android.helloactivity.HelloActivity$DrawingView" android:layout_width="wrap_content" android:layout_height="wrap_content"/> Makes the app run but no view on screen :-( Jasper On Sep 24, 10:21 pm, Lance Nanek <[email protected]> wrote: > Theviewelement name in your XML needs to be entirely lower case, not > capitalized. Should be "view", not "View". Capitalized gives you an > android.view.Viewinstance, not your subclass. > > On an unrelated note, I'm actually surprised what you posted isn't > crashing on the lack of android:layout_width and android:layout_height > attributes first. > > On Sep 24, 10:34 am, jdekeij <[email protected]> wrote: > > > Hoi > > > I try to create my customviewinside a linearlayout. For example > > > <View android:id="@+id/ViewPaint" > >class="com.example.android.helloactivity.HelloActivity$DrawingView"/> > > > In the java source I created a DrawingViewclasswhich extendsView. > > Unfortunatly it does not get instantiated. I tried to overwrite the > > ondraw() but without success :-( > > > Help is very much appreciated. > > Jasper > > > Java Code > > public staticclassDrawingView extendsView > > { > > private final Paint mPaint; > > /* > > * Constructor that is called when inflating aviewfrom XML. > > */ > > DrawingView(Context context, AttributeSet attrs){ > > super(context,attrs); > > > mPaint = new Paint(); > > mPaint.setAntiAlias(true); > > mPaint.setARGB(255, 255, 255, 255); > > } > > > @Override > > protected void onDraw(Canvas canvas) { > > float yPos; > > float xPos; > > int xOffset = 20; > > int yOffset = 50; > > int cxScreen = canvas.getWidth(); > > int cyScreen = canvas.getHeight(); > > int cx = cxScreen - (2*xOffset); > > int cy = cyScreen - (2*yOffset); > > int cxStepSize = cx/10 - 1; > > int cyStepSize = cy/10 - 1; > > > // Makes the complete screen white! > > //canvas.drawColor(0xFFFFFFFF); > > yPos = (float)yOffset; > > xPos = (float)xOffset; > > for (int i=0; i <= 10; i++) > > { // xstart, ystrt,xend,yend > > canvas.drawLine((float)xOffset, yPos, (float)cx, (float) > > yPos, mPaint); > > yPos += cyStepSize; > > } > > for (int i=0; i <= 10; i++) > > { // xstart, ystrt,xend,yend > > > canvas.drawLine((float)xPos, (float)yOffset, (float)xPos, > > (float)cy, mPaint); > > xPos += cxStepSize; > > } > > } > > } > > > XML: > > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > > android" > > android:orientation="vertical" > > android:padding="10dip" > > android:layout_width="fill_parent" > > android:layout_height="wrap_content"> > > > <TextView > > android:layout_width="fill_parent" > > android:layout_height="wrap_content" > > android:layout_marginTop="10dip" > > android:text="Please select a planet:" > > /> > > > <Spinner > > android:id="@+id/spinner" > > android:layout_width="fill_parent" > > android:layout_height="wrap_content" > > android:drawSelectorOnTop="true" > > android:prompt="@string/planet_prompt" > > /> > > <TextView android:id="@+id/dateDisplay" > > android:layout_width="wrap_content" > > android:layout_height="wrap_content" > > android:text="No date yet"/> > > > <Button android:id="@+id/pickDate" > > android:layout_width="wrap_content" > > android:layout_height="wrap_content" > > android:text="Change the date"/> > > > <TextView android:id="@+id/timeDisplay" > > android:layout_width="wrap_content" > > android:layout_height="wrap_content" > > android:text="No time yet"/> > > > <Button android:id="@+id/pickTime" > > android:layout_width="wrap_content" > > android:layout_height="wrap_content" > > android:text="Verander the time"/> > > > <View android:id="@+id/ViewPaint" > >class="com.example.android.helloactivity.HelloActivity$DrawingView"/> > > </LinearLayout> > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
