On reference of this thread: android: move a view on touch move (ACTION_MOVE)
I want to move all Objects (for example two ImageView) if I move finger around the screen.
What I have done so far:
@Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.touchmoveimage);
background = (ImageView) findViewById(R.id.background);
image = (ImageView) findViewById(R.id.image);
root = (ViewGroup) findViewById(R.id.root);
root.setId(R.id.root);
image.setId(R.id.image);
background.setId(R.id.background);
MyTouchListener touchListener = new MyTouchListener();
Bitmap bitmap;
bitmap = decodeFile(R.drawable.background);
background.setImageBitmap(bitmap);
image.setImageResource(R.drawable.fire);
image.setOnTouchListener(touchListener);
background.setOnTouchListener(touchListener);
((ViewGroup) image.getParent()).removeView(image);
((ViewGroup) background.getParent()).removeView(background);
root.addView(background);
root.addView(image);
And this is MyTouchListener
public class MyTouchListener implements View.OnTouchListener{
@Override
public boolean onTouch(View view, MotionEvent event) {
switch (view.getId()) {
case R.id.background:
ImageView view2 = (ImageView) view;
view2.setScaleType(ImageView.ScaleType.MATRIX);
float scale;
dumpEvent(event);
//Handle touch events here...
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: //first finger down only
savedMatrix.set(matrix);
start.set(event.getX(), event.getY());
Log.d(TAG, "mode=DRAG");
mode = DRAG;
break;
case MotionEvent.ACTION_UP://first finger lifted
case MotionEvent.ACTION_POINTER_UP: //second finger lifted
mode = NONE;
Log.d(TAG, "mode=NONE");
break;
case MotionEvent.ACTION_POINTER_DOWN: //first and second finger down
oldDist = spacing(event);
Log.d(TAG, "oldDist=" + oldDist);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(mid, event);
mode = ZOOM;
Log.d(TAG, "mode=ZOOM");
}
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
matrix.set(savedMatrix);
image.setImageMatrix(matrix);
matrix.postTranslate(event.getX() - start.x, event.getY() - start.y); //create the transformation in the matrix of points
} else if (mode == ZOOM) {
float[] f = new float[9];
//pinch zooming
float newDist = spacing(event);
Log.d(TAG, "newDist=" + newDist);
if (newDist > 10f) {
matrix.set(savedMatrix);
scale = newDist / oldDist; //setting the scaling of the matrix...
//if scale > 1 means zoom in
// if scale < 1 means zoom out
matrix.postScale(scale, scale, mid.x, mid.y);
//scale = Math.max(MIN_ZOOM, Math.min(scale, MAX_ZOOM));
}
matrix.getValues(f);
float scaleX = f[Matrix.MSCALE_X];
float scaleY = f[Matrix.MSCALE_Y];
//Einstellungen minimaler oder maximaler zoom
if (scaleX <= MIN_ZOOM) {
matrix.postScale((MIN_ZOOM) / scaleX, (MIN_ZOOM) / scaleY, mid.x, mid.y);
} else if (scaleX >= MAX_ZOOM) {
matrix.postScale((MAX_ZOOM) / scaleX, (MAX_ZOOM) / scaleY, mid.x, mid.y);
}
}
break;
}
view2.setImageMatrix(matrix); //display the transformation on screen
break;
case R.id.image:
final int X = (int) event.getRawX();
final int Y = (int) event.getRawY();
//Definition MotionEvent.ACTION_MASK: Bit mask of the parts of the action code that are the action itself.
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
_xDelta = X - lParams.leftMargin;
_yDelta = Y - lParams.topMargin;
break;
case MotionEvent.ACTION_UP:
break;
case MotionEvent.ACTION_POINTER_DOWN:
break;
case MotionEvent.ACTION_POINTER_UP:
break;
case MotionEvent.ACTION_MOVE:
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view
.getLayoutParams();
layoutParams.leftMargin = X - _xDelta;
layoutParams.topMargin = Y - _yDelta;
layoutParams.rightMargin = -250;
layoutParams.bottomMargin = -250;
view.setLayoutParams(layoutParams);
break;
}
root.invalidate();
break;
}
return true;
}
}
And this is the xml of my Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/skizze"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="matrix" />
<ImageView
android:id="@+id/feuerloescherID"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_alignParentTop="false"
android:layout_gravity="center_horizontal|top" />
</RelativeLayout>
I hope I've given you all relevant informations. What do I have to add/change in my Code to move ALL Objects in my Layout?
Kind Regards!
