setContentView does not accumulate views, but rather replaces the current
content view with a new one - as you already found out.
If you're going to do this with a custom view class, then put it into your
layout file:
<LinearLayout
..... blah blah ....
<com.your.package.name.here.CropView
layout_width, etc. go here
android:background="@drawable/your_drawable_here"
/>
/>
-- Kostya
2011/1/24 nation-x <[email protected]>
> I have a game on the market called Memory Tutor where I am doing
> something similar except I am using setImageDrawable() and
> setBackgroundDrawable(). That way I can just change the
> setImageDrawable to a transparent png when I want to show the image
> and a white png when I want to hide it rather than drawing it the way
> you are trying to do.
>
> Shawn
>
> On Jan 20, 6:16 pm, Marty Miller <[email protected]> wrote:
> > What is the reason for you not posting this? That took a lot of time to
> > write.
> >
> > On Thu, Jan 20, 2011 at 1:07 PM, MartyParty <[email protected]> wrote:
> > > I seem to be missing a key concept here. I want to be able to put a
> > > white square on top of an image. Seems simple right? I can't figure
> > > it out.
> >
> > > Currently, I have have an XML file describing my layout.
> >
> > > <?xml version="1.0" encoding="utf-8"?>
> > > <LinearLayout
> > > xmlns:android="http://schemas.android.com/apk/res/android";
> > > android:layout_height="fill_parent"
> > > android:layout_width="fill_parent"
> > > android:orientation="horizontal" >
> >
> > > <LinearLayout
> > > android:id="@+id/LinearLayout01"
> > > android:orientation="vertical"
> > > android:layout_height="wrap_content"
> > > android:layout_gravity="top"
> > > android:layout_width="fill_parent">
> >
> > > <TextView
> > > android:layout_marginTop="5dip"
> > > android:layout_gravity="center"
> > > android:layout_height="wrap_content"
> > > android:id="@+id/TextView01"
> > > android:textSize="18sp"
> > > android:text="@string/title"
> > > android:layout_width="wrap_content">
> > > </TextView>
> >
> > > <TextView
> > > android:layout_marginLeft="10dip"
> > > android:layout_marginRight="10dip"
> > > android:layout_marginTop="0dip"
> > > android:layout_gravity="center"
> > > android:id="@+id/TextView02"
> > > android:textSize="15sp"
> > > android:text="@string/description"
> > > android:layout_height="wrap_content"
> > > android:layout_width="wrap_content">
> > > </TextView>
> >
> > > <ImageView
> > > android:id="@+id/profilePic"
> > > android:layout_marginTop="15dip"
> > > android:layout_gravity="center"
> > > android:layout_width="wrap_content"
> > > android:layout_height="wrap_content" >
> > > </ImageView>
> >
> > > </LinearLayout>
> >
> > > </LinearLayout>
> >
> > > Next, my Activity calls a method called showImage(). Using the XML,
> > > this method draws the picture taken with the camera along with some
> > > text.
> >
> > > public void showImage(Drawable d)
> > > {
> > > CropView myCropView = new CropView(this);
> > > ImageView myImageView = new ImageView(this);
> >
> > > setContentView(R.layout.main);
> >
> > > myImageView = (ImageView)findViewById(R.id.profilePic);
> > > myImageView.setImageDrawable(d);
> > > myImageView.setScaleType(ImageView.ScaleType.FIT_START);
> >
> > > setContentView(myCropView);
> > > }
> >
> > > Then I have a class CropView that extends ImageView that draws a
> > > square in the middle of the screen:
> >
> > > public class CropView extends ImageView {
> > > public CropView(Context context) {
> > > super(context);
> > > }
> > > @Override
> > > protected void onDraw(Canvas canvas) {
> > > super.onDraw(canvas);
> > > Log.d("Marty", "ON DRAW");
> >
> > > Paint background = new Paint();
> > > background.setColor(Color.RED);
> >
> > > Paint box = new Paint();
> >
> > > box.setColor(Color.WHITE);
> > > box.setStyle(Paint.Style.STROKE);
> >
> > > int boxWidth = 100;
> > > int topX = (getWidth()-boxWidth)/2;
> > > int topY = (getHeight() - boxWidth)/2;
> >
> > > canvas.drawRect(topX,topY, topX+boxWidth,
> > > topY+boxWidth, box);
> > > }
> >
> > > }
> >
> > > As you can see, I have two calls to setContentView. The second call
> > > overlaps the other. How do I get one View to draw on top of my
> > > Layout? I really appreciate any help you could give.
> >
> > > Marty
> >
> >
>
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