I want to toggle 90-degree rotation when an image is tapped:
#UiThread // Android Annotations
void loadImage(ImageSource uri) {
image.setMinimumScaleType(SCALE_TYPE_CENTER_CROP);
image.setMaxScale(8);
image.setImage(uri); // I've tried the ImageViewState variant
image.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (image.getRotation() < 1) {
image.setRotation(90);
} else {
image.setRotation(0);
}
}
});
}
Where the image is defined in a fragment:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
It's working, but the 90-degree rotated image does not occupy the whole screen. It has white background at the top and bottom.
How do I fix this?
It's setOrientation(), not setRotation(). The latter method belongs to View.
Related
I have an ImageView inside of a LinearLayout which is an item of a RecyclerView. I have all these views' width as MATCH_PARENT.
Now, I'm trying to calculate the heigth using the aspect ratio before the image is loaded so there's no resizing.
But, what I've seen is that before the image is loaded, its width is zero.
The thing is that I'm doing similar things in other parts of the app and it's working fine, I don't really know what I'm missing here.
RecyclerView item:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white">
<LinearLayout
...
</LinearLayout>
<!-- This is the image -->
<ImageView
android:id="#+id/descubre_shop_banner"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:adjustViewBounds="true"
android:scaleType="centerCrop"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/colorLightText"
android:layout_marginRight="16dp"
android:layout_marginLeft="16dp"
android:layout_marginBottom="8dp"/>
</LinearLayout>
ViewHolder
mBannerTarget = new Target()
{
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from)
{
mShopBannerImageView.setImageBitmap(bitmap);
// Wrap content when the images is loaded.
mShopBannerImageView.getLayoutParams().height = ViewGroup.LayoutParams.WRAP_CONTENT;
mShopBannerImageView.setBackgroundColor(-1);
mShopBannerImageView.setAlpha(1.0f);
Animation fadeOut = new AlphaAnimation(0, 1);
fadeOut.setInterpolator(new AccelerateInterpolator());
fadeOut.setDuration(250);
mShopBannerImageView.startAnimation(fadeOut);
LOADED = true;
}
#Override
public void onBitmapFailed(Drawable errorDrawable)
{
mShopBannerImageView.setBackgroundColor(
mContext.getResources().getColor(android.R.color.holo_red_dark));
mShopBannerImageView.setAlpha(0.2f);
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable)
{
// This is 0
Log.d(Properties.TAG, "" + mShopBannerImageView.getWidth());
// Remove the old bitmap
mShopBannerImageView.setImageBitmap(null);
// Set the height using the width and the aspect ratio.
mShopBannerImageView.getLayoutParams().height =
(int) (mShopBannerImageView.getWidth() * shop.getAspectRatio());
// Set a color while loading.
mShopBannerImageView.setBackgroundColor(
mContext.getResources().getColor(R.color.colorAccent));
mShopBannerImageView.setAlpha(0.25f);
}
};
I tried to set the width of the ImageView and its parent as MATCH_PARENT in code but no luck. Any clue of what's going on?
Regards,
The views dimensions is always 0 before being fully created, if you wanted to know the actual width, you have to use the method: post():
view.post(new Runnable() {
#Override
public void run() {
// This is where width would be different than 0
}
});
That being said, you should actually use an other method to keep the ratio than actually calculating it yourself!
See this thread for further information How to scale an Image in ImageView to keep the aspect ratio
I am trying to expand and collapse my view with the help of TransitionManager animation. Following is the output,
See the overlapping layout while collapsing top view. How to avoid that ? I set "detailedView" (one with icons) visibility GONE and use following code for animation,
topView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
TransitionManager.beginDelayedTransition(topView);
TransitionManager.beginDelayedTransition(bottomView);
if (detailsView.getVisibility() == View.VISIBLE) {
detailsView.setVisibility(View.GONE);
cardText.setText("Collapse Title");
} else {
detailsView.setVisibility(View.VISIBLE);
cardText.setText("Expanded Title");
}
}
});
I would build the animation differently. I would make a LinearLayout with the top cell with wrap_content, and when clicking I would do something like:
valueAnimator = ValueAnimator.ofInt(titleContainer.getHeight(),titleContainer.getHeight() + newHeight );
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator animation) {
titleContainer.setHeight(animation.getAnimatedValue());
}
});
valueAnimator.setDuration(270);
valueAnimator.start();
I had the same problem.
The first argument that the TransitionManager.beginDelayedTransition() function takes must be the parent of all the views that will interact in the transition e.g:
I have the next layout:
<!-- The scene root -->
<LinearLayout
android:id="#+id/transition_container" >
<!-- First card -->
<androidx.cardview.widget.CardView
android:id="#+id/expandableCard1">
<LinearLayout
android:id="#+id/staticHeader1">
</LinearLayout>
<LinearLayout
android:id="#+id/expandableContent1">
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Second card -->
<androidx.cardview.widget.CardView
android:id="#+id/expandableCard2">
<LinearLayout
android:id="#+id/staticHeader2">
</LinearLayout>
<LinearLayout
android:id="#+id/expandableContent2">
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
And my code (kotlin):
// toggle
if( expandableContent1.visibility == View.GONE ){
// apply to the root scene
TransitionManager.beginDelayedTransition(transition_container )
// change the visibility of the expandable content
expandableContent1.visibility = View.VISIBLE
arrowBtn.setImageResource( R.drawable.ic_arrow_up_24)
} else {
// apply to the root scene
TransitionManager.beginDelayedTransition(transition_container )
// change the visibility of the expandable content
expandableContent1.visibility = View.GONE
arrowBtn.setImageResource( R.drawable.ic_arrow_down_24)
}
I'm looking for a solution to this that will allow me to expand a cardview to see more information and then easily collapse it. Google Keep has examples of cards like this. Anyone know how they do this? Would I create 2 versions of my cardview (one collapsed and one expanded) and then use an Animator class coupled with gesture methods to transition between the two views? I'm using a Recyclerview to hold my cardviews.
I found this if it is at all relevant: http://developer.android.com/training/animation/layout.html
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:animateLayoutChanges="true"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
//here put the view which is always visible
<LinearLayout
android:layout_width="match_parent"
android:visibilty="gone"
android:id="#+id/expandableLayout"
android:layout_height="wrap_content">
//here put which will collapse and expand
</LinearLayout>
</android.support.v7.widget.CardView>
take a boolean isexpanded in you arraylist object class
if (listobj.isexpanded)
{
holder.expandableLayout.setVisibility(View.VISIBLE);
}
else {
holder.expandableLayout.setVisibility(View.GONE);
}
holder.cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (listobj.isexpanded)
{
holder.expandableLayout.setVisibility(View.GONE);
listobj.isexpanded=false;
notifyItemChanged(position);
}
else {
holder.expandableLayout.setVisibility(View.VISIBLE);
listobj.isexpanded=true;
notifyItemChanged(position);
}
}
});
try someting like this
i need some guidance. I need to make a custom view that touched and drag up the screen slides out of the screen. I have tried this cool library: here but this is dependend to exactly 2 layouts. The one that is slided out and the one that remains after that. What i have now is buggy and ugly.
public class DemoActivity extends Activity {
private SlidingUpPanelLayout mLayout;
private RelativeLayout layout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo);
layout = (RelativeLayout) findViewById(R.id.panel);
final int defaulttop = layout.getTop();
final int defaultbottom = layout.getBottom();
RelativeLayout dragView = (RelativeLayout) findViewById(R.id.dragView);
mLayout = (SlidingUpPanelLayout) findViewById(R.id.sliding_layout);
mLayout.setDragView(dragView);
mLayout.setPanelSlideListener(new PanelSlideListener() {
#Override
public void onPanelSlide(View panel, float slideOffset) {
}
#Override
public void onPanelExpanded(View panel) {
System.out.println("panel expanded");
}
#Override
public void onPanelCollapsed(View panel) {
System.out.println("panel collapsed");
}
#Override
public void onPanelAnchored(View panel) {
System.out.println("anchored");
}
#Override
public void onPanelHidden(View panel) {
System.out.println("panel is hidden now");
}
});
}
#Override
public void onBackPressed() {
if (mLayout != null && mLayout.isPanelExpanded()) {
mLayout.collapsePanel();
} else {
super.onBackPressed();
}
}
}
The layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DemoActivity" >
<com.sothree.slidinguppanel.SlidingUpPanelLayout
xmlns:sothree="http://schemas.android.com/apk/res-auto"
android:id="#+id/sliding_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:gravity="bottom"
sothree:dragView="#+id/dragView"
sothree:panelHeight="60dp"
sothree:paralaxOffset="60dp"
sothree:shadowHeight="0dp" >
<RelativeLayout
android:id="#+id/panel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/unt"
android:orientation="vertical" >
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:text="Sleep" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/dragView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:clickable="true"
android:focusable="false" >
</RelativeLayout>
</com.sothree.slidinguppanel.SlidingUpPanelLayout>
</RelativeLayout>
it slides up but leaves a white background in the back. If i touch the screen then it slides. So, i need a new path. Did anyone confrunted with something similar? I need a hint, not code. Thanks.
I have used the library you mentioned here and it worked out fine for me. You might have not set the drag view/layout
Do use mSlidingPanelLayout.setDragView(YourLayout) to set the layout that can be dragged
I have done something like this previously but with a button.
I did it using Animation class when moving it by OnTouchListener. While you have to be careful while using it and control the X and Y values of the layout.
Loading an image that is larger than the width of a Galaxy Tab 2 P5100 (running 4.1.2) into an ImageView adds some sort of top/bottom padding to the loaded image.
Here's a screenshot with Show layout boundaries turned on:
Here's how it should look (from a Nexus 10 running 4.4.2):
The code I use (for both examples above) is
public class ImageBugActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bug);
// This bug is still reproducible if I use the
// Universal-Image-Loader library or if I change the dimensions of
// the image to a different width
loadImage("http://placehold.it/1600x1000", (ImageView)findViewById(R.id.image));
}
private void loadImage(final String url, final ImageView view) {
new Thread(new Runnable() {
#Override
public void run() {
try {
final Bitmap bitmap = BitmapFactory.decodeStream(new URL(url).openConnection().getInputStream());
runOnUiThread(new Runnable() {
#Override
public void run() {
view.setImageBitmap(bitmap);
}
});
} catch (Exception e) {
Log.e("loadImage", e.getMessage(), e);
}
}
}).start();
}
}
And the layout file is
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="On a Galaxy Tab 2 the image below it is pushed to the center of the remaining space." />
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top" />
</LinearLayout>
Does this seem to be an Android/Samsung bug or am I making a dumb mistake?
Setting the android:scaleType of the ImageView to "fitStart" should do the trick.
You should use "match_parent" for layout_height of the ImageView.
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top" />