We Keep Coding

Add Fade-in effect to imageview image [Android]

Guys I need help to understand, how to add some animation to static imageview. My project contains this:
layout/drawer_header.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/nav_header_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/launcher_icon"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_centerInParent="true"
android:scaleType="fitCenter"
android:visibility="invisible"
android:src="#mipmap/ic_launcher" />
<ImageView
android:id="#+id/drawer_icon"
android:flipInterval="3000"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxHeight="245dp"
android:scaleType="centerCrop"
android:src="#drawable/vert_loading" />
</RelativeLayout>
anim/fadein.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:interpolator="#android:anim/accelerate_interpolator"
android:duration="2000"/>
anim/fadeout.xml
<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:interpolator="#android:anim/accelerate_interpolator"
android:duration="2000"/>
</set>
The question is: How to fadein and fadeout image automaticaly:
android:src="#drawable/vert_loading"
Add something to MainActiviti.java?

In you java code you need to startAnimation & to repeat one after another you can listen using setAnimationListener. When onAnimationEnd is called for one you can call another startAnimation.
Following is the example for your use case:
//find imageview
ImageView image = findViewById(R.id.drawer_icon);
// get Animation objcets
Animation fadeIn = AnimationUtils.loadAnimation(this, R.anim.fadein);
Animation fadeOut = AnimationUtils.loadAnimation(this, R.anim.fadeout);
//set the initial animation
image.startAnimation(fadeIn);
//set fadeIn listener
fadeIn.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
//when fadeIn ends start the fadeout
image.startAnimation(fadeOut);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
//set fadeout listener
fadeOut.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
//when fadeOut ends start the fadeIn
image.startAnimation(fadeIn);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});

Move imageview after animation (update position)

I am trying to to do a translate animation on an image view from the bottom to the middle of the screen. Upon finish of the animation, I want the image view to stay there. I dont want the setFillAfter(true) because I want the actual position of the imageview to be updated.
I do it currently by having 2 image view (one at the start of animation and one at the end) and I play with the setVisibility to achieve this. Is this the correct way to do things? Here is the code I used:
<ImageView
android:id="#+id/ivStart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#drawable/typer_step_1"
android:gravity="center"
/>
<ImageView
android:id="#+id/ivMiddle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="#drawable/typer_step_1"
android:gravity="center"
android:visibility="invisible"
/>
TranslateAnimation translate = new TranslateAnimation(0, mDestLoc1[0]-mSrcLoc1[0], 0, mDestLoc1[1]-mSrcLoc1[1]);
translate.setDuration(2000);
translate.setAnimationListener(new AnimationListener(){
#Override
public void onAnimationStart(Animation animation) {}
#Override
public void onAnimationEnd(Animation animation) {
ivMiddle.setVisibility(View.VISIBLE)
ivStart.setVisibility(View.INVISIBLE)
}
#Override
public void onAnimationRepeat(Animation animation) {}
});
ivStart.startAnimation(translate);

Then you must set new LayoutParams for your View which is animating. When animation finishes, in your onAnimationEnd part, set new position of your View.
TranslateAnimation translate = new TranslateAnimation(0, mDestLoc1[0]-mSrcLoc1[0], 0, mDestLoc1[1]-mSrcLoc1[1]);
translate.setDuration(2000);
translate.setAnimationListener(new AnimationListener(){
#Override
public void onAnimationStart(Animation animation) {}
#Override
public void onAnimationEnd(Animation animation) {
RelativeLayout.LayoutParams par = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
par.topMargin = mDestLoc1[1]-mSrcLoc1[1];
par.leftMargin = mDestLoc1[0]-mSrcLoc1[0];
view.setLayoutParams(par);
}
#Override
public void onAnimationRepeat(Animation animation) {}
});
view.startAnimation(translate);

Snake use my code this ll help you,
//Call this in your onCreate
private void StartAnimationsDtoU()
{
Animation anim = AnimationUtils.loadAnimation(this, R.anim.alphadtou);
anim.reset();
RelativeLayout l=(RelativeLayout) findViewById(R.id.lin_lay);
l.clearAnimation();
l.startAnimation(anim);
anim = AnimationUtils.loadAnimation(this, R.anim.translate);
anim.reset();
ImageView iv = (ImageView) findViewById(R.id.logo);
iv.setImageResource(R.drawable.earth);
iv.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
iv.clearAnimation();
iv.startAnimation(anim);
}
This is your linear layout with an image which ll move from down to middle of the screen.
<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"
android:id="#+id/lin_lay">
<ImageView
android:id="#+id/logo"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="#drawable/earth" />
and this ll be your xml file for translation i.e translate.xml ...
<set xmlns:android="http://schemas.android.com/apk/res/android"><translate
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="0%"
android:toXDelta="0%"
android:fromYDelta="200%"
android:toYDelta="0%"
android:duration="4000"
android:zAdjustment="top" /></set>
and this ll be your down to up alphadtou.xml...
<?xml version="1.0" encoding="utf-8"?><alpha
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:duration="1000" />
and also override onAttachedToWindow method like this...
#Override
public void onAttachedToWindow()
{
// TODO Auto-generated method stub
super.onAttachedToWindow();
Window window = getWindow();
window.setFormat(PixelFormat.RGBA_8888);
}
Hope this ll help you alot.

If you want the actual starting position of the image view you can get it at the time of animationStart And you can use setFillAfter(true). The setFillAfter(true) will update the position after the animation end.
If you need the new position you can use the setFilter(true). If you are not ready to use setFillAfter(true) (if you need the older position), then you have done the right thing by having two Image Views. But its better to get the position in animationStart and use setFillAfter(true).

Add this line before starting the animation
translate.setFillAfter(true);

How to add a View above the display Android

I want to create a translate animation which will pop up a View from the top of the screen. Now I need to put my view above the screen , so that it will be invisible . The root of all Views is a vertical LinearLayout . This is how I inflate the RelativeLayout (which is going to be animated) into my LinearLayout.
final LinearLayout root = (LinearLayout) findViewById (R.id.mainLayout);
final RelativeLayout container = (RelativeLayout)
LayoutInflater.from(getBaseContext()).
inflate(R.layout.animated_layout ,
root , false );
root.addView(container);
and this is the Relativelayout xml .
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="70dp"
android:background="#drawable/list_item_back1" >
<TextView
android:textSize="25sp"
android:layout_width = "match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>

Ass you said, become your view invisible. Then, create an XML translate animation:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/linear_interpolator">
<translate
android:fromYDelta="100%"
android:toYDelta="0%"
android:duration="1000" />
</set>
In your java code do something like this:
Animation translateAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate_animation);
translateAnimation.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
yourAnimatedView.setvisibility(View.VISIBLE);
}
#Override
public void onAnimationEnd(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
}
yourAnimatedView.startAnimation(translateAnimation);
});

hardware accelerated webview slide-in animation flickering on ICS

Our application makes heavy use of webviews. When testing on ICS, we noticed that we need to set the application property hardwareAccelerated="true". However, doing this caused a few other bugs in our application, most of which we have fixed. We are still having problems getting our 'slide-in' animation working. Without any code changes, the animation simply does a 'reveal' type animation rather than sliding. We have tries a few different things:
Adding a small alpha transition (.99->1). This changes the 'reveal' to a 'slide' but causes some weird artifacts on the screen sometimes.
using hardware layers during the animation. This doesn't work consistently.
using software layers during the animation. This works, but causes a slow redraw after the slide-in animation completes for the first time.
Approach 3 is the most promising, but we have not figured out how to avoid the redraw. We have created a small test case using a sample project with a single activity:
activity class:
int accelValue = View.LAYER_TYPE_NONE; //hack
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addClickListenerAnimation(R.id.buttonhl, R.anim.to_left, View.VISIBLE, View.INVISIBLE);
addClickListenerAnimation(R.id.buttonhr, R.anim.to_right, View.VISIBLE, View.INVISIBLE);
addClickListenerAnimation(R.id.buttonsl, R.anim.from_left, View.INVISIBLE, View.VISIBLE);
addClickListenerAnimation(R.id.buttonsr, R.anim.from_right, View.INVISIBLE, View.VISIBLE);
final Button b = (Button) findViewById(R.id.accel);
b.setOnClickListener(
new View.OnClickListener()
{
#Override
public void onClick(View v)
{
accelValue = ++accelValue % 3;
b.setText(accelValue == 0 ? "NONE" : accelValue == 1 ? "S/W" : "H/W");
}
});
}
private void addClickListenerAnimation(int buttonId, final int animId, final int startVis, final int endVis)
{
Button b = (Button) findViewById(buttonId);
b.setOnClickListener(
new View.OnClickListener()
{
#Override
public void onClick(View v)
{
final WebView wv = (WebView) findViewById(R.id.webview);
final View layout = findViewById(R.id.frame);
Animation a = AnimationUtils.loadAnimation(getApplicationContext(), animId);
a.setDuration(500);
a.setAnimationListener(new AnimationListener()
{
#Override
public void onAnimationStart(Animation animation)
{
Log.i("sb", "layer type was " + wv.getLayerType());
Log.i("sb", "llayout layer type was " + layout.getLayerType());
wv.setLayerType(accelValue, null);
Log.i("sb", "setting layer type " + accelValue);
}
#Override
public void onAnimationRepeat(Animation animation)
{
}
#Override
public void onAnimationEnd(Animation animation)
{
wv.setLayerType(View.LAYER_TYPE_NONE, null);
Log.i("sb", "restoring layout layer type " + layout.getLayerType());
}
});
layout.setAnimation(a);
layout.setVisibility(endVis);
}
});
}
#Override
protected void onStart()
{
super.onStart();
((WebView)findViewById(R.id.webview)).loadUrl("http://www.wikipedia.org");
}
from_left.xml animation (other animation xmls are similar):
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="true">
<translate android:fromXDelta="-100%"
android:toXDelta="0%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="600"
android:zAdjustment="bottom"
/>
</set>
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/llayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/frame"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="invisible"
>
<WebView
android:id="#+id/webview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"/>
</FrameLayout>
<View
android:layout_width="fill_parent"
android:layout_height="80dp"
android:background="#FF000000" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="80dp"
android:orientation="horizontal" >
<Button
android:id="#+id/buttonsl"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text="show L" />
<Button
android:id="#+id/buttonhl"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text="hide L" />
<Button
android:id="#+id/buttonsr"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text="show R" />
<Button
android:id="#+id/buttonhr"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text="hide R" />
<Button
android:id="#+id/accel"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text="NONE" />
</LinearLayout>
</LinearLayout>
manifest:
<uses-sdk android:minSdkVersion="14" />
<uses-permission android:name="android.permission.INTERNET" />

Well, if you are trying to support ICS and onward, you can use the new Animation APIs as they are much easier to use and I believe will be very smooth.
Here are two links to take a look into this API:
this and this
And if you want to use this API for older versions, try NineOldAndroids
Edit: Try setting the WebView's Layer to a Software one:
web.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
It stopped the flickering but you lose hardware acceleration inside the view. I am not sure but I guess that for stuff like animation the view would still be considered as having hardware acceleration since its "container" still does. But I could be completely wrong too.

it worked fine for me using
web.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
the flickering issue was solved

From you description it seems like that's the same problem I had, though I'm not completely sure of that. At first I used your solution, but now I have one that works even better. I simply set
android:alwaysDrawnWithCache="true"
on the web view. That get's rid of all flickering and wrong drawing.
I hope it helps!

Scroll a RelativeLayout when it contains custom Views

I'm trying to make scrollable RelativeLayout, that contains some custom Views. This is the plan of cinema hall, i have x, y coordinates of places and it's width and height (that are just rectangales, actually). I just put it into this RelativeLayout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:padding="10px">
<ScrollView
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<RelativeLayout android:id="#+id/scrollable_places"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</RelativeLayout>
</ScrollView>
I put it like this:
RelativeLayout layout = (RelativeLayout) context.findViewById(R.id.scrollable_places);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(place.getWidth(),
place.getHeight());
params.leftMargin = place.getX();
params.topMargin = place.getY();
layout.addView(new Seat(context, place), params);
Seat class looks like this:
public class Seat extends View {
private Place place;
private boolean isRed = false;
public Seat(Context context, Place place) {
super(context);
this.place = place;
setOnClickListener(new OnSeatClickListener());
}
#Override
protected void onDraw(Canvas canvas) {
if (!isRed)
canvas.drawColor(Color.GREEN);
else
canvas.drawColor(Color.RED);
}
protected void setRed() {
isRed = true;
}
private class OnSeatClickListener implements OnClickListener {
#Override
public void onClick(View view) {
((Seat) view).setRed();
view.invalidate();
}
}
}
Views are drawing perfectly. But I have ann array of views, and when some of them go out of the screen, scrollView didn't work, there is no scroll on the screen. Have you any ideas how can I make this layout scroll?

You should try following xml file. It will work on all the devices.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:fillViewport="true"
android:padding="10px"
android:layout_height="fill_parent"
android:layout_width="fill_parent">
<RelativeLayout android:id="#+id/scrollable_places"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</RelativeLayout>
</ScrollView>
Thanks.

In scroll view you have written android:layout_height="wrap_content" instead of using wrap_content five specific height size eg android:layout_height="100dip"
Thanks
Deepak