The backgrounds of all the pictures are changing at the same time. I have to change one by one, wait 5 seconds after each picture, change the other,
ImageView[] imajlar={img1,img2,img3,img4,img5,img6,img7,img8};
for (final ImageView resmi:imajlar) {
//resmi.startAnimation(fadeout);
new CountDownTimer(16000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
resmi.setBackground(hediye);
resmi.startAnimation(fadein);
onPause();
}
#Override
public void onFinish() {
}
}.start();
Use Handler for this. I hope this helps you.
new Handler().postDelayed(new Runnable(){
#Override
public void run() {
changeImage();
}
}, 5000);
Try Timer with Handler
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
#Override
public void run() {
//Your code
}
}, 0, 5000);
Try this code..
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
// define your code..
}
},5000);
Do it like
Define an array of images.
String img[]={img1,img2,img3};
and a variable
int i=0;
now in your method
changeImage()
{
if(i<img.length())
{
//Pseudo code(your logic of setting image)
setImage.array[i];
i++;
}
else
{
//This is to start again;
i=0
}
}
Then in you defined handler.
final Handler mHandler=new Handler();
ha.postDelayed(new Runnable() {
#Override
public void run() {
changeImage();
mHandler.postDelayed(this, 5000);
}
}, 5000);
int totalImageSize = yourTotalImageCount;
final Handler mHandler = new Handler();
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
changeYourImage(totalImageSize);// this will give the position of image to add/remove
totalImageSize - 1;
if(totalImageSize > 0)
mHandler.postDelayed(this, 5000);
}
}, 5000);
}
Related
As you can see, I have to do TASK1 and continually TASK2. Between 1 and 2, they have delay. And then I want to repeat it infinitely till activity will be finished.
I have no experience for thread.. I can't fix this error.
Help ME!
Timer timer = new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
//TASK 1
main_1.setVisibility(View.VISIBLE);
main_2.setVisibility(View.INVISIBLE);
main_1.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
Handler mHandler = new Handler(Looper.getMainLooper());
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
//TASK 2
main_1.setVisibility(View.INVISIBLE);
main_2.setVisibility(View.VISIBLE);
main_2.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
}
}, 1000);
}
}, 1000, 1000);
And it's my error
android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
Timer timer = new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
//TASK 1
YourActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
main_1.setVisibility(View.VISIBLE);
main_2.setVisibility(View.INVISIBLE);
main_1.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
}
});
Handler mHandler = new Handler(Looper.getMainLooper());
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
//TASK 2
YourActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
main_1.setVisibility(View.INVISIBLE);
main_2.setVisibility(View.VISIBLE);
main_2.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
}
});
}
}, 1000);
}
}, 1000, 1000);
Timer runs on background thread. You can not update ui from background thread, so always use runOnUiThread for that purpose.
Timer timer = new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
YourActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
main_1.setVisibility(View.VISIBLE);
main_2.setVisibility(View.INVISIBLE);
main_1.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
}
});
Handler mHandler = new Handler(Looper.getMainLooper());
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
//TASK 2
main_1.setVisibility(View.INVISIBLE);
main_2.setVisibility(View.VISIBLE);
main_2.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.slide_in_left));
}
}, 1000);
}
}, 1000, 1000);
I'm trying to change some textview value but when it's not appeared on the screen the value don't change or when it's appeared on screen it changes and when scroll down and scroll back up it's value returns to the old one i tried the following two ways but non of them is working :
final Timer timer=new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
myTextView.setText("sometext");
timer.cancel();
}
});
}
}, 5000, 1000);
and:
MainActivity.this.r1.post(new Runnable() {
public void run() {
myTextView.setText("sometext");
}
});
Try using Handler
private void TestThread() {
Handler handler = new Handler();
Runnable runnable = new Runnable() {
public void run() {
handler.post(new Runnable(){
public void run() {
tvTime.setText("SomeText");
}
});
}
}
};
new Thread(runnable).start();
}
Also you can take a look AsyncTask Documentation and onPostExecute() you set the text to TextView.
You have to make sure that the UI is drawn first before you change the value of the TextView , It can be done by adding a layout listener,
ViewTreeObserver vto = getWindow().getDecorView().getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Overrid
public void onGlobalLayout() {
final Timer timer=new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
myTextView.setText("sometext");
timer.cancel();
}
});
}
}, 5000, 1000);
}
}
When i using this timer to change the image, its not working. I am trying to change the image when the timer run.I put this timer inside onCreate is that okay?
Timer timer = new Timer("MetronomeTimer", true);
TimerTask tone = new TimerTask() {
int i=0;
#Override
public void run() {
img1.setImageResource(Images[i]);
i++;
}
};
timer.scheduleAtFixedRate(tone, 500, 500);
try something like this:
private Handler handler = new Handler();
handler.postDelayed(runnable, 100);
private Runnable runnable = new Runnable() {
#Override
public void run() {
/* do what you need to do */
changeImage();
/* and here comes the "trick" */
handler.postDelayed(this, 100);
}
};
changeImage can be something like
void changeImage()
{
runOnUiThread(new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
img1.setImageResource(Images[i]);
i++;
}
});
}
I am trying to change image after 1 second for image view.but its doesn't show any image on screen. following is code.please help.thank you.
code-
public class Shapes extends Activity {
Timer timer = new Timer();
int flag;
String images[]={};
ImageView iv;
static int v[]={R.drawable.round,R.drawable.rectangle};
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.shapes);
iv=(ImageView) findViewById(R.id.imageView1);
timer.schedule(new TimerTask() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
if (flag > 1) {
timer.cancel();
timer = null;
} else
iv.setImageResource(v[flag++]);
}
});
}
}, System.currentTimeMillis(), 1000);
}
}
how can i check resource image and change it
Use Handler instead of Timer
Handler handler = new Handler();
Runnable changeImage = new Runnable(){
#Override
public void run(){
if(flag>1)
handler.removeCallbacks(changeImage);
else{
iv.setImageResource(v[flag++]);
handler.postDelayed(changeImage, 1000);
}
}
};
start the first time from oncreate()
public void onCreate(Bundle b){
handler.postDelayed(changeImage, 1000);
}
timer.scheduleAtFixedRate(new TimerTask() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
flag++;
if (flag > 1) {
timer.cancel();
timer = null;
}
else
iv.setImageResource(v[flag]);
}
});
}
}, 1000, 1000); // wait 1 second before start.. then repeat every second..
It's because you put System.currentTimeMillis() as delay.
Try replacing that with 0, because the time should start after 0 ms.
I would like the Timer to start when I turn ToggleButton ON and to cancel when I turn it OFF. It works, but when I try to start it over again after being cancelled I get an error. Where is the problem? Here is the code:
final ToggleButton btnLive = (ToggleButton)findViewById(R.id.live);
btnLive.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (btnLive.isChecked()) {
timer = new Timer();
timer.schedule(timerTask, 5*1000, 5*1000);
} else {
timer.cancel();
timer.purge();
timer = null;
}
}
});
EDIT: It works with calling timer that way:
timer.schedule(new TimerTask(){
private Runnable runnable = new Runnable() {
public void run() {
new Something().execute();
}
};
public void run() {
handler.post(runnable);
}
}, 5*1000, 5*1000);
Can you explain me why first method is not working? Is it range problem?
Use this type of code and check.
Timer mTimer = new Timer();
mTimer.schedule(new TimerTask()
{
#Override
public void run() {
runOnUiThread(new Runnable() {
public void run() {
}
});
}
}, 5000, 500);