I'm an Android newbie developer and having an issue with a tiny Android app I'm developing which I suspect is related to timing of dynamic view creation. It's a little scorekeeper app and it has dynamically generated player buttons and text fields, defined in a Player class. Here's an excerpt of how I'm doing this:
public Player(String name, int score, int number, boolean enabled, RelativeLayout mainScreen, List<Button> presetButtonList, Editor editor, Context context) {
super();
this.name = name;
this.score = score;
this.number = number;
this.enabled = enabled;
this.editor = editor;
// Get the lowest child on the mainScreen
Integer count = mainScreen.getChildCount(), lowestChildId = null;
Float lowestChildBottom = null;
for (int i = 0; i < count; i++) {
View child = mainScreen.getChildAt(i);
if ((lowestChildId == null || child.getY() > lowestChildBottom) &&
!presetButtonList.contains(child)) {
lowestChildId = child.getId();
lowestChildBottom = child.getY();
}
}
playerNameText = (EditText) setTextViewDefaults(new EditText(context), name);
playerNameText.setSingleLine();
// playerNameText.setMaxWidth(mainScreen.getWidth());
// playerNameText.setEllipsize(TextUtils.TruncateAt.END); //TODO: Prevent names which are too long for screen
playerNameText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable changedText) {
setName(changedText.toString());
updateScreen();
}
public void beforeTextChanged(CharSequence changedText, int start, int count, int after) {}
public void onTextChanged(CharSequence changedText, int start, int before, int count) {}
});
RLParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
if (lowestChildId != null) {
RLParams.addRule(RelativeLayout.BELOW, lowestChildId);
} else {
RLParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
RLParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
}
RLParams.setMargins(0, 10, 0, 10);
mainScreen.addView(playerNameText, RLParams);
the class further defines buttons and etc in a similar fashion, aligning tops with the name text view. I call this when a user clicks a button to add a player, and it works fine, displaying each player below the first on down the screen. The problem comes in when I'm loading a bunch of saved players at the start. Here's where i load the players:
public void loadData() {
RelativeLayout mainScreen = (RelativeLayout)findViewById(R.id.relativeLayout);
playerCount = savedData.getInt("playerCount", playerCount);
Player player;
String name;
playerList.clear();
for (int i=1; i<=playerCount; i++) {
name = savedData.getString("name" + i, null);
if (name != null) {
Log.v("name", name);
player = new Player(name, savedData.getInt("score" + i, 0), i, savedData.getBoolean("enabled" + i, false), mainScreen, presetButtonList, editor, this);
playerList.add(player);
player.updateScreen();
}
}
updateScreen();
}
Finally, I call the loadData() method when the app starts, here:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
savedData = this.getPreferences(Context.MODE_PRIVATE);
editor = savedData.edit();
presetButtonList.add((Button)findViewById(R.id.newGame));
presetButtonList.add((Button)findViewById(R.id.addPlayer));
presetButtonList.add((Button)findViewById(R.id.removePlayer));
loadData();
}
The result? When there are more than two players to load, all the players get loaded to the same spot, on top of Player 2.
I suspect somehow that the players are all being generated at the same time and thus all believing that the lowest player view is Player 1, and not checking each other. I've tried triggering the load later than onCreate() and it still happens. I also tried adding a 3 second sleep within the for loop of loadData() after each player loads to see if that helped, but no luck.
Am I making bad assumptions? What am I doing wrong and how might I fix it?
I suspect what is happening here is that you are attempting to position views that don't have IDs (it looks like you don't set them anywhere in your code). Dynamically created views don't automatically have IDs, so a call to getId() will return NO_ID (See documentation). If you want to use an ID you will have to set it yourself using View.setId().
It was a timing issue after all. I needed to wait for the main screen to load before I could add views to it. Unfortunately, it would never load until all activity on the UI thread was finished.
Thus, I needed threading. I ended up putting loadData() in a thread, like this:
new Thread(new loadDataAsync(this)).start();
class loadDataAsync implements Runnable {
MainActivity mainActivity;
public loadDataAsync(MainActivity mainActivity) {
this.mainActivity = mainActivity;
}
#Override
public void run() {
try {
Thread.sleep(700);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
loadData(mainActivity);
}
}
Then I created the players back on the UI thread after the initial sleep to give time for the UI to load.
runOnUiThread(new Runnable() {
Player player;
RelativeLayout mainScreen = (RelativeLayout)findViewById(R.id.relativeLayout);
#Override
public void run() {
player = new Player(savedData.getString("name" + playerNum, null), savedData.getInt("score" + playerNum, 0), playerNum, savedData.getBoolean("enabled" + playerNum, false), mainScreen, presetButtonList, editor, mainActivity);
playerList.add(player);
player.updateScreen();
mainScreen.invalidate();
}
});
Not the most elegant solution, but it works for now.
Related
I'm having some trouble with an issue in my Android Studio application that is to do with pressing the back button. Basically the user inputs into a text view and another method (not included as it works fine but I can post if requested) searches an API for the relevant data and displays it in a recycler view. Then the user makes a selection from the recycler view and the method below parses a JSON file and adds relevant data from it to an array in a separate class "Director". Once this happens the next activity "GraphActivity" starts and draws a number of nodes on a canvas for each director in the array.
The issue I am having is that when I make an input into the text view and then press the back button to close the soft keyboard on my Android device (it covers up the recycler view) and go through the steps I just mentioned, when the GraphActivity activity starts it does not work (no nodes are drawn). However, if I then press the back button to go back to the first activity and then make the same selection from the recycler view again, it works.
From what I can tell, the issue seems to be with the data being added to the "Director" array but I cannot figure out what is causing it, Logcat shows that the first time the GraphActivity activity starts the "Director" array is empty and therefore, no nodes are drawn but when I press back and then make the same selection again the array has the correct data and the nodes are drawn.
I would really appreciate some help with this as I am very new to Android Studio and have been searching around for hours to try and find a solution.
public class MainActivity extends AppCompatActivity implements MainAdapter.OnCompanyClickedListener {
private RecyclerView recyclerView;
private TextView userInput;
private Button search;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.rView);
RecyclerView.LayoutManager manager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(manager);
}
//Parse JSON File
public void searchCompanyDirectors(final String companyNumber){
Thread thread = new Thread(new Runnable(){
#Override
public void run(){
HttpClient httpClient = new HttpClient();
try{
final String response = httpClient.run("myURL");
runOnUiThread(new Runnable(){
#Override
public void run(){
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray array = jsonObject.getJSONArray("items");
for (int i = 0; i < array.length();i++){
JSONObject o = array.getJSONObject(i);
String appointment = o.getString("links");
String parsedAppointment = parseApp(appointment);
Director director = new Director(o.getString("name"),parsedAppointment);
Director.directorList.add(director);
}
}catch (JSONException e){
e.printStackTrace();
}
}
});
}
catch (Exception ex){
ex.printStackTrace();
}
}
});
thread.start();
}
#Override
public void onCompanyClicked(int position) {
Toast.makeText(this,Company.companyList.get(position).getTitle(),Toast.LENGTH_LONG).show();
chosenCompanyNumber = Company.companyList.get(position).getCompanyNumber();
chosenCompany = Company.companyList.get(position).getTitle();
searchCompanyDirectors(chosenCompanyNumber);
Intent intent = new Intent(this,GraphActivity.class);
startActivity(intent);
}
}
The GraphActivity class:
public class GraphActivity extends AppCompatActivity {
DrawGraph drawGraph;
#SuppressLint("ClickableViewAccessibility")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
drawGraph = new DrawGraph(this);
setContentView(drawGraph);
The DrawGraph class:
public class DrawGraph extends View {
private Paint p1;
private Paint p2;
private Paint p3;
private Paint paint;
private Path path;
private Point point1;
private int radius = 300;
double x;
double y;
double angle;
int mWidth = this.getResources().getDisplayMetrics().widthPixels;
int mHeight = this.getResources().getDisplayMetrics().heightPixels;
List<Director> directorList = Director.getDirectorList();
private String chosenCompany = MainActivity.getChosenCompany();
private static List<Float> ordinates = new ArrayList<>();
public DrawGraph(Context context) {
super(context);
p1 = new Paint(Paint.ANTI_ALIAS_FLAG);
p1.setStrokeWidth(10);
p2 = new Paint(Paint.ANTI_ALIAS_FLAG);
p2.setStrokeWidth(10);
p3 = new Paint(Paint.ANTI_ALIAS_FLAG);
p3.setStrokeWidth(5);
path = new Path();
paint = new Paint();
point1 = new Point(mWidth/2, mHeight/2);
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Colors
p1.setStyle(Paint.Style.FILL);
p1.setColor(Color.RED);
p2.setStyle(Paint.Style.FILL);
p2.setColor(Color.GREEN);
p3.setStyle(Paint.Style.STROKE);
p3.setColor(Color.CYAN);
paint.setColor(Color.BLACK);
paint.setTextSize(18f);
paint.setAntiAlias(true);
paint.setTextAlign(Paint.Align.CENTER);
Rect bounds = new Rect();
paint.getTextBounds(chosenCompany, 0, chosenCompany.length(),bounds);
//Draw company and directors
for (int i = 1; i <= directorList.size(); i++)
{
//Divide the company node
angle = i * (360/directorList.size());
x = point1.x + radius * cos(angle);
y = point1.y + radius * sin(angle);
//Draw directors
canvas.drawCircle((float)x,(float)y - (bounds.height() / 2), bounds.width() + 5,p2);
canvas.drawText(directorList.get(i-1).getName(),(float)x,(float)y,paint);
}
Okay, I've found an issue in DrawGraph class noted here;
List<Director> directorList = Director.getDirectorList();
private String chosenCompany = MainActivity.getChosenCompany();
You should not directly access the data objects of one activity from another. The previous activity could be destroyed etc as per Android OS and its lifecycle. You must think of it like out of sight, out of memory; which can cause the current activity to not be able to access the data in the previous one.
You'd need to properly send the parsed data from your JSON file, the variables List directorList and the String chosenCompany from your MainActivity to GraphActivity.
You can send data from one activity to another by adding it to the intent with which you call the next activity. The Intent class has features to help you send a small amount of information via itself; called putExtra() and getExtra(). More about them here.
You will need to add those variable datasets through intent.putExtra and fetch them back in your other activity onCreate by using getExtras.
Activity A >> Intent call to Activity B + Data >> Activity B
Hope this helps.
I have declared my variable, 'changed' too null so that I can check if it changes when the edittext is changed,
The problem I think is, when I press either the save button or the cancel button, it will always produce the value null, as upon clicking the button it is still null. However, I thought that the textwatcher would listen to the EditText and even if nothing was changed in the EditText it would by default change the SetChanged() to false as it provided "live updates", however clearly this isn't the case, am I doing something wrong? or am I supposed to approach it in a different way?, is there some way of refreshing it?
Advise would be greatly appreciated.
(P.S Some code was deleted to reduce the size and make it look easy on the eye, so excuse me for any missing braces. Furthermore, the activity does run properly as it shows the layout.However upon pressing any of the buttons it causes it to crash.)
public class EditNewItemActivity extends AppCompatActivity{
private Boolean changed = null;
private TextView title,content;
private Button saveBtn,cancelBtn;
private String date;
private int id;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit_item);
title = (TextView) findViewById(R.id.editItemTitle);
content = (TextView) findViewById(R.id.editItemDescription);
saveBtn = (Button) findViewById(R.id.editItemSaveBtn);
cancelBtn = (Button) findViewById(R.id.editItemCancelBtn);
Bundle extras = getIntent().getExtras();
title.setText(extras.getString("title"));
content.setText(extras.getString("content"));
date = extras.getString("date");
id = extras.getInt("id");
GenericTextWatcher textWatcher = new GenericTextWatcher();
title.addTextChangedListener(textWatcher);
content.addTextChangedListener(textWatcher);
ClickEvent clickEvent = new ClickEvent();
saveBtn.setOnClickListener(clickEvent);
cancelBtn.setOnClickListener(clickEvent);
}
private class ClickEvent implements View.OnClickListener{
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.editItemSaveBtn:
save();
break;
case R.id.editItemCancelBtn:
cancel();
break;
}
}
}
private void cancel() {
if (getChanged() == null){
//This was used to simply verify that getchanged was still null.
}
if (title.getText().toString() != "" || content.getText().toString() != ""){
if (getChanged() == false) {
// if nothing has been changed let it cancel etc
}else {
}
}
}
private void save() {
if (tempTitle != "" || tempContent != "") {
if(getChanged() == true){
}
}
public Boolean getChanged() {
return changed;
}
public void setChanged(Boolean changed) {
this.changed = changed;
}
private class GenericTextWatcher implements TextWatcher{
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
Log.v("Beforetext:", s.toString());
EditNewItemActivity editItem = new EditNewItemActivity();
editItem.setChanged(false);
}
#Override
public void afterTextChanged(Editable s) {
Log.v("afterTextChanged:", s.toString());
EditNewItemActivity editItem = new EditNewItemActivity();
editItem.setChanged(true);
Log.v("Status:", editItem.getChanged().toString());
}
}
You had change the changed. But which you changed is in your new EditNewItemActivity not in your current page.
This is where you made mistake (beforeTextChanged and afterTextChanged in your GenericTextWatcher):
EditNewItemActivity editItem = new EditNewItemActivity();
editItem.setChanged(false); //or true
You should just call:
setChanged(false); // or true
In fact, you should not new an activity yourself, activity must be create by the Android Framework so that it can be managed by the system.
I want to make a slideshow of numbers starting from 0 to 9 in pictures. When i click next button , show the picture of 1 and play sound as 'one' and so on.I want previous button to properly work.. like when I click previous button then go to previous pic and play sound which is related to that pic.
public class Numbers extends Activity {
int i = 1;
private ImageView iv;
Button next;
Button previous;
MediaPlayer ourSong;
private int currentImage = 0;
public int currentAudio = 0;
int[] images = { R.drawable.p1, R.drawable.p2, R.drawable.p3,
R.drawable.p4, R.drawable.p5, R.drawable.p6, R.drawable.p7,
R.drawable.p8, R.drawable.p9, R.drawable.p10};
int[] audios = { R.raw.a1, R.raw.a2, R.raw.a3, R.raw.a4, R.raw.a5,
R.raw.a6, R.raw.a7, R.raw.a8, R.raw.a9, R.raw.a10};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.nextpre);
iv = (ImageView) findViewById(R.id.ivn);
next = (Button) findViewById(R.id.buttonn);
previous = (Button) findViewById(R.id.buttonp);
// Just set one Click listener for the image
next.setOnClickListener(iButtonChangeImageListener);
previous.setOnClickListener(gButtonChangeImageListener);
}
View.OnClickListener iButtonChangeImageListener = new View.OnClickListener() {
public void onClick(View v) {
try {
// Increase Counter to move to next Image
currentImage++;
currentImage = currentImage % images.length;
iv.setImageResource(images[currentImage]);
ourSong = MediaPlayer.create(Numbers.this,
audios[currentAudio+1]);
ourSong.start();
currentAudio++;
} catch (Exception e) {
}
}
};
View.OnClickListener gButtonChangeImageListener = new View.OnClickListener() {
public void onClick(View v) {
try {
// Decrease Counter to move to previous Image
currentImage--;
currentImage = (currentImage + images.length) % images.length;
iv.setImageResource(images[currentImage]);
MediaPlayer.create(Numbers.this, audios[currentAudio]);
ourSong.start();
currentAudio--;
} catch (Exception e) {
}
}
};
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
ourSong.release();
finish();
}
#Override
protected void onStart() {
super.onStart();
ourSong = MediaPlayer.create(Numbers.this,
audios[0]);
ourSong.start();
}
}
Hmm if you're trying to make a slide show, you might want to look into view pagers they look like this:
View pagers are highly customizable, You can add buttons and images and pretty much almost anything a fragment can hold on each screen. Not sure what your skill level is but ill tell you whats involved in getting this to work.
Create a layout with a view pager in it.
Create a class that extends the FragmentPagerAdapter
Override getItem() method in the adapter (this is where you define your different "screens"
Create a class that extends fragment for each screen you want to show your users.
Doing it this way in order to switch screens u just have to call setCurrentItem to change pages (when user clicks next or prev)
--edit--
Apparently theres also a something called an ImageSwitcher.
They look like this:
This is actually better for your case since you only want images. It looks a lot easier to implement than a view pager. This describes how to implement it: http://www.tutorialspoint.com/android/android_imageswitcher.htm
I have this app, it's basically a 'make fun' app I made with a person's face and the ability to either shoot it with a pistol, automatic rifle, or grenade (more weapons to come :-)).
I have a Weapon class, with the following code. (I'm pretty new to java so forgive me if I failed to follow proven ways, or do things as efficiently as I should)
public class Weapon {
// Parent
public static MainActivity ma;
// Constants
public static final int BULLET_WIDTH = 97;
public static final int BULLET_HEIGHT = 92;
public static final int EXPLOD_WIDTH = 299;
public static final int EXPLOD_HEIGHT = 237;
public static final int PISTOL = 0;
public static final int RIFLE = 1;
public static final int GRENADE = 2;
protected static int[] position = {0, 0};
protected static RelativeLayout rl = null;
protected static MediaPlayer mp;
// Protected stuff
// Object variables.
protected int type;
protected int drawableEffect;
protected int soundEffect;
// Functionals
protected ImageView effectImage;
public void equipWeapon() {
// Clear any existing listeners and assign a new one.
MainActivity.mainImage.setOnTouchListener(null);
MainActivity.mainImage.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
// Which weapon are we using?
switch (type) {
case Weapon.PISTOL:
case Weapon.GRENADE:
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// Fire the weapon.
fireWeapon(v, event);
}
case Weapon.RIFLE:
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE: // This doesn't work ???
// Fire the weapon.
fireWeapon(v, event);
}
}
// perfomClick needed.
return v.performClick();
}
});
}
public void fireWeapon(View v, MotionEvent event) {
// Reference the layout.
Weapon.rl = (RelativeLayout)Weapon.ma.findViewById(R.id.relativeLayout);
// Define properties.
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
// Get the touch position.
Weapon.position[0] = (int)event.getX() - ((type == Weapon.PISTOL || type == Weapon.RIFLE) ? Weapon.BULLET_WIDTH:Weapon.EXPLOD_WIDTH);
Weapon.position[1] = (int)event.getY() - ((type == Weapon.PISTOL || type == Weapon.RIFLE) ? Weapon.BULLET_HEIGHT:Weapon.EXPLOD_HEIGHT);
// Set the position.
lp.setMargins(Weapon.position[0], Weapon.position[1], 0, 0);
effectImage.setLayoutParams(lp);
// Add the view to the layout.
Weapon.rl.addView(effectImage, lp);
// Play the sound.
Weapon.mp.seekTo(0);
Weapon.mp.start();
// Reload
reload();
}
public void reload() {
// Create the ImageView
this.effectImage = new ImageView(Weapon.ma);
this.effectImage.setImageResource(this.drawableEffect);
}
}
And I have a Pistol class which extends Weapon
public class Pistol extends Weapon {
public Pistol() {
// First save the type.
this.type = Weapon.PISTOL;
// Fetch the sound effect and image.
this.soundEffect = R.raw.gunshot;
this.drawableEffect = R.drawable.bullet_hole1;
// Create the media player and initialize the sound.
Weapon.mp = MediaPlayer.create(Weapon.ma, this.soundEffect);
// Create the ImageView
this.effectImage = null;
this.effectImage = new ImageView(Weapon.ma);
this.effectImage.setImageResource(this.drawableEffect);
}
}
As well as a Rifle class extending Weapon
public class Rifle extends Weapon {
public Rifle() {
// First save the type.
this.type = Weapon.RIFLE;
// Fetch the sound effect and image.
this.soundEffect = R.raw.gunshot;
this.drawableEffect = R.drawable.bullet_hole1;
// Create the media player and initialize the sound.
Weapon.mp = MediaPlayer.create(Weapon.ma, this.soundEffect);
// Create the ImageView
this.effectImage = null;
this.effectImage = new ImageView(Weapon.ma);
this.effectImage.setImageResource(this.drawableEffect);
}
}
finally, I have a Grenade class extending, yep you guessed it, Weapon as well.
public class Grenade extends Weapon {
public Grenade() {
// First save the type.
this.type = Weapon.GRENADE;
// Fetch the sound effect and image.
this.soundEffect = R.raw.grenade;
this.drawableEffect = R.drawable.boom;
// Create the media player and initialize the sound.
Weapon.mp = MediaPlayer.create(Weapon.ma, this.soundEffect);
// Create the ImageView
this.effectImage = new ImageView(Weapon.ma);
this.effectImage.setImageResource(this.drawableEffect);
}
}
I have buttons in the main view which I have registered onClick listeners to so you can switch weapons to your liking.. Here is one for example:
grenadeButton = (ImageButton)findViewById(R.id.grenadeButton);
grenadeButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (MainActivity.this.weapon != Weapon.GRENADE) {
// Change the background color.
resetButtons();
v.setBackgroundResource(R.drawable.background_selected);
// Change weapons.
MainActivity.this.currentWeapon = equipWeapon(Weapon.GRENADE);
}
}
});
and the equip weapon method in MainActivity.
public Weapon equipWeapon(int type) {
Weapon weapon = null;
switch (type) {
case Weapon.PISTOL:
weapon = new Pistol();
break;
case Weapon.RIFLE:
weapon = new Rifle();
break;
case Weapon.GRENADE:
weapon = new Grenade();
break;
}
// Play a sound and save changes.
MainActivity.this.weapon = type;
MainActivity.mp.seekTo(0);
MainActivity.mp.start();
return weapon;
}
Now, I appreciate you taking the time to review all this code. I know that's a lot to digest for what I'm assuming is a simple issue. I'm also aware of the rules of this forum and I have attempted to search for this issue already, but I'm not sure if I was using the right queries, as I did not find anything related to this issue.
Here we go:
When you start the app, the pistol is automatically equipped so you can start shooting immediately. It shoots fine, I get a bullet noise, and bullet holes all over the picture of the person's face ^_^. The rifle works fine as well (but it uses the same noise and graphic as the pistol, so it could very well be failing as well. Refer below).
When I switch to the grenade, I here a lovely explosion sound, but the image displayed is still a bullet hole and not an explosion.. I have no earthly idea how to fix this and I am stumped..
When I create the grenade object I specifically assign the drawable resource to the instance variable...
this.drawableEffect = R.drawable.boom;
Yet it still displays R.drawable.bullet_hole1....
Please let me know if you need more information and ask any questions you need to..
Thank you for your time..
I'm so stupid.....
MainActivity.equipWeapon
wasn't calling
Weapon.equipWeapon....
So the weapon wasn't changing... Oy' vey...
I am new to android and I need help.
I want my image which is falling from the top of screen to get invisible when I click a button on the keyboard which has the same tag as the image. Although I have implemented the above points a problem arises when I want to show the next animation again immediately after the previous image gets invisible. This is my code for animation.
public void startAnimation(final ImageView aniView)
{
animator= ValueAnimator.ofFloat(0 ,.85f);
animator.setDuration(Constants.ANIM_DURATION);
animator.setInterpolator(null);
//generation of random values
Random rand = new Random();
index = rand.nextInt((int) metrics.widthPixels);
//for debugging
i = Integer.toString(index);
Log.e(" index is :", i);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()
{
#Override
public void onAnimationUpdate(ValueAnimator animation)
{
float value = ((Float) (animation.getAnimatedValue())).floatValue();
aniView.setTranslationX(index);
aniView.setTranslationY((height+ (50*mScale))*value);
//aniView.setTranslationY(height);
}
});
animator.start();
}
//keyboard methods goes here
#Override
public void onClick(View v)
{
gettext(v);
}
private void gettext(View v)
{
try
{
String b = "";
b = (String) v.getTag();
String img_val = map.get(b);
int imgid = (Integer) imageView.getTag();
Log.e("img values=:", img_val+" "+imgid);
if(img_val.equals(ALPHABETS[imgid]))
{
imageView.setVisibility(View.INVISIBLE);
animator.start();
//trying to start the animation again
}
I am using the animation.addupdateListener to call the animation again and again but it only calls when the .ofFloat finishes on the value. When I click on the appropriate button the animation gets invisible but the next animation starts again after the same time. I want to start it immediately.
Basically calling start() again won't work. you need to "reset" the animation somehow, did you try calling end() before ?
animator.end();
animator.start();