about zoom image
start
Intent intent = new Intent(context,
ImageZoomActivity.class);
intent.putExtra("image", tabletImage.getLocalPath());
context.startActivity(intent);
activity
public class ImageZoomActivity extends Activity implements
View.OnClickListener {
ImagesManager imagesManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.image_zoom);
findViewById(R.id.btn_hide).setOnClickListener(this);
final TouchImageView img = (TouchImageView)findViewById(R.id.tiv);
img.setMaxZoom(4f);
img.setImageDrawable(getResources().getDrawable(R.drawable.image_not_find));
if (!getIntent().hasExtra("image")){
Log.i("show image zoom","extra miss");
img.setImageDrawable(getResources().getDrawable(R.drawable.image_not_find));
}else {
Log.i("show image zoom","start");
String pathString = getIntent().getStringExtra("image");
File file = new File(pathString);
if (file.exists()) {
Bitmap myBitmap =
BitmapFactory.decodeFile(file.getAbsolutePath());
if (myBitmap != null) {
myBitmap = Utils.ScaledBitmapIfTooBig(myBitmap);
img.setImageBitmap(myBitmap);
return;
}
}
}
}
@Override
public void onClick(View view) {
finish();
}
}
xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android";
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:id="@+id/image_zoom_layout">
<TouchImageView
android:id="@+id/tiv"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<Button android:id="@+id/btn_hide"
android:layout_width="50dp"
android:layout_margin="4dp"
android:layout_alignParentRight="true"
android:paddingTop="10dp"
android:gravity="center"
android:text="X"
android:textSize="22dp"
android:layout_height="50dp"/>
</RelativeLayout>
TouchImageView
public class TouchImageView extends ImageView {
Matrix matrix;
// We can be in one of these 3 states
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;
// Remember some things for zooming
PointF last = new PointF();
PointF start = new PointF();
float minScale = 1f;
float maxScale = 3f;
float[] m;
int viewWidth, viewHeight;
static final int CLICK = 3;
float saveScale = 1f;
protected float origWidth, origHeight;
int oldMeasuredWidth, oldMeasuredHeight;
ScaleGestureDetector mScaleDetector;
Context context;
public TouchImageView(Context context) {
super(context);
sharedConstructing(context);
}
public TouchImageView(Context context, AttributeSet attrs) {
super(context, attrs);
sharedConstructing(context);
}
private void sharedConstructing(Context context) {
super.setClickable(true);
this.context = context;
mScaleDetector = new ScaleGestureDetector(context, new
ScaleListener());
matrix = new Matrix();
m = new float[9];
setImageMatrix(matrix);
setScaleType(ScaleType.MATRIX);
setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
mScaleDetector.onTouchEvent(event);
PointF curr = new PointF(event.getX(), event.getY());
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
last.set(curr);
start.set(last);
mode = DRAG;
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
float deltaX = curr.x - last.x;
float deltaY = curr.y - last.y;
float fixTransX = getFixDragTrans(deltaX,
viewWidth, origWidth * saveScale);
float fixTransY = getFixDragTrans(deltaY,
viewHeight, origHeight * saveScale);
matrix.postTranslate(fixTransX, fixTransY);
fixTrans();
last.set(curr.x, curr.y);
}
break;
case MotionEvent.ACTION_UP:
mode = NONE;
int xDiff = (int) Math.abs(curr.x - start.x);
int yDiff = (int) Math.abs(curr.y - start.y);
if (xDiff < CLICK && yDiff < CLICK)
performClick();
break;
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
break;
}
setImageMatrix(matrix);
invalidate();
return true; // indicate event was handled
}
});
}
public void setMaxZoom(float x) {
maxScale = x;
}
private class ScaleListener extends
ScaleGestureDetector.SimpleOnScaleGestureListener {
@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
mode = ZOOM;
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float mScaleFactor = detector.getScaleFactor();
float origScale = saveScale;
saveScale *= mScaleFactor;
if (saveScale > maxScale) {
saveScale = maxScale;
mScaleFactor = maxScale / origScale;
} else if (saveScale < minScale) {
saveScale = minScale;
mScaleFactor = minScale / origScale;
}
if (origWidth * saveScale <= viewWidth || origHeight *
saveScale <= viewHeight)
matrix.postScale(mScaleFactor, mScaleFactor, viewWidth / 2,
viewHeight / 2);
else
matrix.postScale(mScaleFactor, mScaleFactor,
detector.getFocusX(), detector.getFocusY());
fixTrans();
return true;
}
}
void fixTrans() {
matrix.getValues(m);
float transX = m[Matrix.MTRANS_X];
float transY = m[Matrix.MTRANS_Y];
float fixTransX = getFixTrans(transX, viewWidth, origWidth *
saveScale);
float fixTransY = getFixTrans(transY, viewHeight, origHeight *
saveScale);
if (fixTransX != 0 || fixTransY != 0)
matrix.postTranslate(fixTransX, fixTransY);
}
float getFixTrans(float trans, float viewSize, float contentSize) {
float minTrans, maxTrans;
if (contentSize <= viewSize) {
minTrans = 0;
maxTrans = viewSize - contentSize;
} else {
minTrans = viewSize - contentSize;
maxTrans = 0;
}
if (trans < minTrans)
return -trans + minTrans;
if (trans > maxTrans)
return -trans + maxTrans;
return 0;
}
float getFixDragTrans(float delta, float viewSize, float contentSize) {
if (contentSize <= viewSize) {
return 0;
}
return delta;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
viewWidth = MeasureSpec.getSize(widthMeasureSpec);
viewHeight = MeasureSpec.getSize(heightMeasureSpec);
//
// Rescales image on rotation
//
if (oldMeasuredHeight == viewWidth && oldMeasuredHeight ==
viewHeight
|| viewWidth == 0 || viewHeight == 0)
return;
oldMeasuredHeight = viewHeight;
oldMeasuredWidth = viewWidth;
if (saveScale == 1) {
//Fit to screen.
float scale;
Drawable drawable = getDrawable();
if (drawable == null || drawable.getIntrinsicWidth() == 0 ||
drawable.getIntrinsicHeight() == 0)
return;
int bmWidth = drawable.getIntrinsicWidth();
int bmHeight = drawable.getIntrinsicHeight();
Log.d("bmSize", "bmWidth: " + bmWidth + " bmHeight : " +
bmHeight);
float scaleX = (float) viewWidth / (float) bmWidth;
float scaleY = (float) viewHeight / (float) bmHeight;
scale = Math.min(scaleX, scaleY);
matrix.setScale(scale, scale);
// Center the image
float redundantYSpace = (float) viewHeight - (scale * (float)
bmHeight);
float redundantXSpace = (float) viewWidth - (scale * (float)
bmWidth);
redundantYSpace /= (float) 2;
redundantXSpace /= (float) 2;
matrix.postTranslate(redundantXSpace, redundantYSpace);
origWidth = viewWidth - 2 * redundantXSpace;
origHeight = viewHeight - 2 * redundantYSpace;
setImageMatrix(matrix);
}
fixTrans();
}
}
בתאריך יום ראשון, 17 ביולי 2016 בשעה 08:46:44 UTC+3, מאת
[email protected]:
>
> Hi,
> I am developing an Android application and I need to pass multiple
> selections from the application,similar to selection from a multiselect
> checkbox.I have searched a lot and cannot find how to do this
>
> anywhere.Can you please help?
> Also, I need a Image gallery and if an image is selected user should
> be able to zoom in the image and view image.Is there any plugin or any
> example code that can do this that you would
>
> recommend?
>
> Edit: To explain further I have attached a screenshot of the app.I am
> currently passing a single size and single color on each "Add to cart".I
> want to be able to send multiple sizes and color values.The
>
> current code is given below. also I need to be able to zoom into the image
> which is in the square above the size and colour box.I hope this helps
> explain the problem I am facing.
>
> EDIT: I am putting a shortened version of the code.This code passes a size
> value from the spinner when a value is
> selected.(setOnItemSelectedListener).the spinner has id size_spinner.
>
> JAVA
>
> private void setSizeData(Context context, int pos) {
>
> sizeList = new ArrayList<>();
>
>
> sizeList = style_modelsList.get(pos).getSizeModels();
>
> if (sizeList != null) {
> SizeAdapter sizeAdapter = new SizeAdapter(context);
> size_spinner.setAdapter(sizeAdapter);
> size_spinner.setOnItemSelectedListener(new
> AdapterView.OnItemSelectedListener() {
> @Override
> public void onItemSelected(AdapterView
>
>
> }
>
> @Override
> public void onNothingSelected(AdapterView
> }
> });
>
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