imageview

ImageView be a square with dynamic width?

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The best option is to subclass ImageView yourself, overriding the measure pass: public class SquareImageView extends ImageView { … @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int width = getMeasuredWidth(); setMeasuredDimension(width, width); } … }

How do you setLayoutParams() for an ImageView?

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You need to set the LayoutParams of the ViewGroup the ImageView is sitting in. For example if your ImageView is inside a LinearLayout, then you create a LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(30, 30); yourImageView.setLayoutParams(layoutParams); This is because it’s the parent of the View that needs to know what size to allocate to the View.

Android ImageView scale smaller image to width with flexible height without cropping or distortion

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I have solved this by creating a java-class that you include in your layout-file: public class DynamicImageView extends ImageView { public DynamicImageView(final Context context, final AttributeSet attrs) { super(context, attrs); } @Override protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) { final Drawable d = this.getDrawable(); if (d != null) { // ceil not round … Read more

How can I give an imageview click effect like a button on Android?

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You can do this with a single image using something like this: //get the image view ImageView imageView = (ImageView)findViewById(R.id.ImageView); //set the ontouch listener imageView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: { ImageView view = (ImageView) v; //overlay is black with transparency of 0x77 (119) view.getDrawable().setColorFilter(0x77000000,PorterDuff.Mode.SRC_ATOP); … Read more

ImageView scaling TOP_CROP

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Ok, I have a working solution. The prompt from Darko made me look again at the ImageView class (thanks) and have applied the transformation using a Matrix (as i originally suspected but did not have success on my first attempt!). In my custom imageView class I call setScaleType(ScaleType.MATRIX) after super() in the constructor, and have … Read more

Android fade in and fade out with ImageView

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I wanted to achieve the same goal as you, so I wrote the following method which does exactly that if you pass it an ImageView and a list of references to image drawables. ImageView demoImage = (ImageView) findViewById(R.id.DemoImage); int imagesToShow[] = { R.drawable.image1, R.drawable.image2,R.drawable.image3 }; animate(demoImage, imagesToShow, 0,false); private void animate(final ImageView imageView, final int … Read more

Custom ImageView with drop shadow

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Okay, I don’t foresee any more answers on this one, so what I ended up going with for now is just a solution for rectangular images. I’ve used the following NinePatch: along with the appropriate padding in XML: <ImageView android:id=”@+id/image_test” android:background=”@drawable/drop_shadow” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:paddingLeft=”6px” android:paddingTop=”4px” android:paddingRight=”8px” android:paddingBottom=”9px” android:src=”https://stackoverflow.com/questions/3693234/@drawable/pic1″ /> to get a fairly good result: … Read more