Develop Reference

Animation will NOT stop running

i have implemented an animation on one of my image views. My problem is that the animation will NOT stop at all. I call everything clearanimation i set it to null set it to cancel and it still wont stop.
public void tiltani(){
ImageView vault = (ImageView)findViewById(R.id.vault2) ;
Animation tilt = AnimationUtils.loadAnimation(this, R.anim.tilt);
vault.startAnimation(tilt);
}
public void stopani() {
Animation tilt = AnimationUtils.loadAnimation(this, R.anim.tilt);
vault.clearAnimation();
vault.setAnimation(null);
tilt.cancel();
tilt.reset();
}
here is xml file
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<rotate
android:fromDegrees="0"
android:toDegrees="6"
android:pivotX="50%"
android:pivotY="50%"
android:duration="500"
android:repeatCount="infinite"/>
<rotate
android:fromDegrees="6"
android:toDegrees="-2"
android:pivotX="50%"
android:pivotY="50%"
android:duration="500"
android:repeatMode="reverse"
android:repeatCount="infinite"
/>
here is where i start it
Intent intent1 = getIntent();
if (intent1.hasExtra("id1")) {
tiltani();
and i try to stop/cancel everything in an onclick method
vault.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
vault.setImageDrawable(ContextCompat.getDrawable(MainActivity.this, R.drawable.chestopen));
stopani();
update
Animation tilt = AnimationUtils.loadAnimation(this, R.anim.tilt);
if (intent1.hasExtra("id1")) {
vault.startAnimation(tilt);
vault.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
vault.setImageDrawable(ContextCompat.getDrawable(MainActivity.this,
R.drawable.chestopen));
vault.setAnimation(null);

You can just use vault.startAnimation(tilt); to start your animation, and use vault.setAnimation(null); to stop your animation.
You have initialized Animation a second time in stopani() method. Your view initialization and animation initialization should be global.
Your code should be like this.
ImageView vault = (ImageView)findViewById(R.id.vault2); //Global variable
Animation tilt = AnimationUtils.loadAnimation(this, R.anim.tilt); //Global variable
public void tiltani(){
vault.startAnimation(tilt);
}
public void stopani() {
vault.clearAnimation();
vault.setAnimation(null);
tilt.cancel();
tilt.reset();
}
Hope, It will help you.. :)

How to fade in textview letter by letter in Android

I am trying to do a fade in animation on a textview letter by letter but when i do it with view animation it fade in the entire textview.
I tried to combine view animation with a handler for when letter appear but i don't get the result i wanted. this is the code i tried.
the xml file
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:interpolator="#android:anim/linear_interpolator"
android:duration="3000"
android:fillBefore="true"
android:zAdjustment="bottom"/>
the java code
public class TextViewAnimator {
private TextView textView;
private CharSequence text;
private long delay;
private int index;
private Handler timerHandler = new Handler();
private Runnable animationTask = new Runnable() {
#Override
public void run() {
textView.setText(text.subSequence(0, index++));
if (index <= text.length()) {
timerHandler.postDelayed(animationTask, delay);
}
}
};
public static TextViewAnimator newInstance(TextView textView,
CharSequence text, long delay) {
TextViewAnimator instance = new TextViewAnimator();
instance.textView = textView;
instance.text = text;
instance.delay = delay;
return instance;
}
public void start() {
textView.setText("");
timerHandler.postDelayed(animationTask, delay);
}
}
is there another way to get fade in letter by letter?

I guess this is too late but still may help someone.
I too needed something like this but found a satisfactory solution nowhere, decided to make a custom View of my own, then transformed it into a library. Try [Fade-In TextView][1]. It sets text letter by letter with a nice fade-in animation.
Usage
In the XML layout
<believe.cht.fadeintextview.TextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
android:textColor="#android:color/black"
app:letterDuration="250"/>
And in the Activity/Fragment
believe.cht.fadeintextview.TextView textView = (believe.cht.fadeintextview.TextView) findViewById(R.id.textView);
textView.setLetterDuration(250); // sets letter duration programmatically
textView.isAnimating(); // returns current animation state (boolean)
textView.setText(); // sets the text with animation

changing images through ling click in android

i am making a flashlight app in which i am using using two images, one each for flashoff state and flashon state respectively.
i want to have animation such that these two images get toggled(image 1 apperas then image2 then again image 2..infinite times) when there is longclick..
that is iwant to show this in longclicklistner...
here is what i have done..
i am using this animation..
<?xml version="1.0" encoding="utf-8"?>
<set
xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:duration="1000" android:repeatCount="infinite" android:repeatMode="reverse" android:fromAlpha="0.3" android:toAlpha="1.0" />
and
#Override
public boolean onLongClick(View arg0) {
// TODO Auto-generated method stub
tButton.startAnimation(flickon); //tbutton is an image button
return true;
}
});
}
using this animation is happening but images are not switching..please help

ImageView image = (ImageView) findViewById(R.id.test_image);
image.setImageResource(R.drawable.xxx);
use the above code to set an image to the image view and use a thread that can change contents in the UI bascially some thing like this
public void onLongClick(View v) {
new Thread(new Runnable() {
public void run() {
ImageView image = (ImageView) findViewById(R.id.test_image);
image.setImageResource(R.drawable.xxx);
}
}).start();
}
You can loop over it for as many times as you want.

Animating a TextView each time it is changed

I have a button which basically changes the TextView every time it is clicked. Is it possible to associate an animation with this? I have looked at things such as a 3D flip but they seem a little too advanced for me. Any simpler suggestions?
final Button button1 = (Button) findViewById(R.id.button1);
final TextView textView = (TextView) findViewById(R.id.text_random_text);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
textView.setText(getNextRandomCuisine());
}
});

I suggest you to take a look at the Android webPage. http://developer.android.com/reference/android/view/animation/AnimationUtils.html
the class AnimationUtils helps you to load and Animation Pattern from your xml folder, you can for example make a "fadein" animation, you should dafür create an xml datei, name it for example "fadein.xml" it should be like this
<?xml version="1.0" encoding="utf-8"?>
<alpha
android:duration="200"
android:fromAlpha="0.0"
android:toAlpha="1.0" >
</alpha>
with this you are just telling your android device, that this animation should variates the alpha value (also the transparence) of your view, from 0 to 1, making your view visible, the "duration" parameter is just how any milliseconds will take to execute this animation.

How to replay a one shot animation

I want to make a one shot animation but be able to play it as many times as I want. Right now it plays only the first time.
.xml:
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/p1_ch1" android:oneshot="true">
<item
android:drawable="#drawable/p1_ch1_5"
android:duration="500"/>
<item
android:drawable="#drawable/p1_ch1_4"
android:duration="1000"/>
<item
android:drawable="#drawable/p1_ch1_5"
android:duration="500"/>
</animation-list>
.java:
public void handler_p1_ch1_5 (View target){
ImageView iv = (ImageView)findViewById(R.id.p1_ch1_5);
AnimationDrawable aw = (AnimationDrawable)iv.getBackground();
aw.start();
}

Just call aw.stop() before aw.start()

Use this:
frameAnimation.setOneShot(true);

Change
android:oneShot="true" to
android:oneShot="false"

If you want to replay a one shot animation after previous animation finish you can do like
final AnimationDrawable animationDrawable = (AnimationDrawable) image.getDrawable();
if (!animationDrawable.isRunning()) {
int totalFrameDuration = 0;
for (int i = 0; i < animationDrawable.getNumberOfFrames(); i++) {
totalFrameDuration += animationDrawable.getDuration(i);
}
animationDrawable.start();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
animationDrawable.stop();
}
}, duration);
}