Thanks for your answer, Romain. It's nice to know that I'm not alone
in the (Android) universe ;)
In spite of the infinite loop, my application works. I haven't noticed
slowness or any other issue except for the "misteryous" vanish of some
paintings. Now thanks to you the misteryous it's revealed. By the way,
do you know how could I avoid the limits given by the addView
parameters so pagweb (WebView) repaints itself according to the size
of addView parameters but without cutting its draw using its limits? I
call super.onDraw(canvas) in ExtWebView, why it takes the pagWeb
limits and not the ExtWebView ones?
Thanks again. I appreciate your help.
On 4 mar, 01:45, Romain Guy <romain...@android.com> wrote:
> You are calling requestLayout() from the draw method. requestLayout()
> causes a draw to happen, and you've just created an infinite loop.
>
>
>
> On Wed, Mar 3, 2010 at 4:42 PM, Alfonso <alfonsocris...@gmail.com> wrote:
> > Well, I've found the way to replicate the avoiding cutting limits
> > effect when rotate the ExtWebView. I just place a
> > "this.layout(0,0,300,300);" and after it a "this.requestLayout()" at
> > the end fo the onDrawMethod inside the ExtWebView class, looking so:
>
> > @Override
> > protected void onDraw(Canvas canvas) {
> > canvas.translate(0,320);
> > canvas.rotate(-90);
> > this.layout(0, 0, 300,300);
> > this.requestLayout();
> > super.onDraw(canvas);
> > }
>
> > I needed this effect, so I'm happy with this solution. But my doubt is
> > still there, is the ExtTextView interacting with ExtWebView's canvas
> > when setting the minimum heigth and width? Is this a bug? And another
> > two questions, why ExtWebView continues painting its content even if I
> > delete the "super.onDraw(canvas);" line at the end of the onDraw
> > method? and why it doesn't work fine if I save and restore the canvas
> > state at the begining and the end respectively of the onDraw method?
>
> > Thanks for your help.
>
> > On 26 feb, 04:37, Alfonso <alfonsocris...@gmail.com> wrote:
> >> Hi, it's my first time writing here and I want giving thanks everybody
> >> who makes the group possible. Specially to all the Android
> >> developpers. Well, let's go to the problem: I'm trying to rotate a
> >> WebView according with the orientation sensor. That's because below
> >> this view I have a GLSurfaceView wich I don't want to rotate, so as
> >> probably you'd have suppossed I set orientation in landscape mode,
> >> avoiding the automatic rotate of the cell.
>
> >> To achieve my goal I include the class WebView in another one using
> >> composition. This class is named, in example, ExtWebView and overrides
> >> the onDraw method with canvas.rotate(-90) (after a translate). The
> >> class ExtWebView extends the LinearLayout one. The problems begins
> >> when I decide set the WebView in a non square portion of the screen
> >> (not the whole one). So I add the WebView to the ExtWebView with
> >> "addView(WebView, 200, 300);". In the main Activity I add the
> >> ExtWebView with "addContentView(ExtWebView, new
> >> LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));" so
> >> it should being able to use the whole screen.
>
> >> And now come the problem. The rotated WebView appears initially fine
> >> (rotated like expected), but if I slide my finger on it left or right
> >> (coords are changed and works like up and down, but that doesn't worry
> >> me) then only shows on the screen the portion of the View wich fits
> >> into the bounds specified in the WebView with (200,300). In other
> >> words, I rotate in the ExtVebView but it behaves like if I would the
> >> WebView one (cutting the web page to its dimmensions).
>
> >> However, that's not the only one surprise (not the most interesting
> >> one, at least for me). If I add a class wich extends TextView in the
> >> main activity above the ExtWebView with the methods: setMinWidth(300)
> >> and setMinHeight(300) (both of them inside the overrided onDraw
> >> method) then ExtWebView shows the whole page rotated exactly like
> >> expected, even behaves fine when sliding my finger on it, although the
> >> portion of the web which before wasn't showed and yes now becomes
> >> insensitive to my finger slidings. In a few words, with the
> >> setMinWidth and setMinHeight methods the limits setted to 200x300 in
> >> the WebView disappear. Is this a bug? Is there any other way of
> >> achieving this effect? I`ve been looking inside the code of the
> >> TextView and I think the question it is in the requestLayout() method
> >> but I don't know where is implemented it's code.
>
> >> Any help will be wellcome.
>
> >> The code of ExtWebView is:
>
> >> public class ExtWebView extends LinearLayout {
>
> >> public ExtWebView(Context context) {
> >> super(context);
> >> mContext = context;
> >> init();
> >> }
>
> >> public ExtWebView(Context context, AttributeSet params) {
> >> super(context, params);
> >> mContext = context;
> >> init();
> >> }
>
> >> private void init() {
> >> pagWeb = new WebView(mContext);
> >> pagWeb.getSettings().setJavaScriptEnabled(true);
> >> setWillNotDraw(false); //force the use of the OnDraw
> >> method
> >> addView(pagWeb, 200, 300);
> >> }
>
> >> �...@override
> >> protected void onDraw(Canvas canvas) {
> >> canvas.translate(0,320);
> >> canvas.rotate(-90);
> >> super.onDraw(canvas);
> >> }
>
> >> }
>
> >> The ExtTextView one:
>
> >> public class ExtTextView extends TextView {
> >> public ExtTextView(Context context) {
> >> super(context);
> >> setText("Weird effect ...");
> >> }
>
> >> �...@override
> >> protected void onDraw(Canvas canvas) {
> >> canvas.save();
>
> >> this.setMinHeight(300);
> >> this.setMinWidth(300);
>
> >> super.onDraw(canvas);
> >> canvas.restore();
> >> }
>
> >> }
>
> >> and we add the views in the main activity with:
>
> >> ExtWebView.loadURL("file:///sdcard/test.html") //Loading of the web
> >> page
>
> >> addContentView(ExtWebView, new
> >> LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));"
>
> >> addContentView(ExtTextView, new
> >> LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));"
>
> > --
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>
> --
> Romain Guy
> Android framework engineer
> romain...@android.com
>
> Note: please don't send private questions to me, as I don't have time
> to provide private support. All such questions should be posted on
> public forums, where I and others can see and answer them
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