Android: How to use two custom views in an Activity?

Question

The ZoomInZoomOut extends imageView and allows the user to drag around and zoom in the image using gestures, the DrawView forms a resizeable circle, and this is what I want to show up when the user presses the button

Here's the code implementing what I have...

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_image_display);
    Intent intent = getIntent();
    String path = getIntent().getStringExtra(ImageDisplayActivity.KEY_PATH);
    final Button button = (Button) findViewById(R.id.button1);
    try {
        java.io.FileInputStream in = this.openFileInput(path);
        bitmap = BitmapFactory.decodeStream(in);
        bitmap = bitmap.copy(bitmap.getConfig(), true);
        touch = (ZoomInZoomOut)findViewById(R.id.IMAGEID);
        touch = arrangeImageView(touch);
        touch.setImageBitmap(bitmap);
        in.close();


    } catch (Exception e) {
        e.printStackTrace();
    }
}
public void sendMessage(View view) {
    // Do something in response to button click
    shape = (DrawView)findViewById(R.id.IMAGEID2);
}

The XML

<com.commonsware.android.test1.ZoomInZoomOut
    android:id="@+id/IMAGEID"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"/>

<com.commonsware.android.test1.DrawView
    android:id="@+id/IMAGEID2"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"/>

<Button
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="AddCircle"
    android:id="@+id/button1"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:onClick="sendMessage"/>

Answer 1

第一个VISIBLE ，另一个INVISIBLE