How can I add functionality to my activity that it automatically finishes after one minute?
I.e. I am creating a mathematical game where the user needs to get so many correct answers within a minute. I have created everything else but am unsure how to add the timer/Countdown?
I seen the following on the android website:
new CountDownTimer(60000, 1000) {
public void onTick(long millisUntilFinished) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
}
public void onFinish() {
mTextField.setText("done!");
}
}.start();
But I am unsure how to use this code, is it used within oncreate?
You can use Handler:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
//finish is here
}
}, 60000);
}
Related
In my activity i want to check if countdowntimer is finished i'll stop the activity and pass to another activity?How can i do this?
I define countdowntimer like this
mcountdowntimer = new CountDownTimer(25000,1000) {
#Override
public void onTick(long millisUntilFinished) {
Log.v("Log_tag", "Tick of Progress" + i + millisUntilFinished);
i++;
mProgressBar.setProgress(i);
}
#Override
public void onFinish() {
i++;
mProgressBar.setProgress(i);
}
};
mcountdowntimer.start();
mProgressBar.setProgressTintList(ColorStateList.valueOf(Color.rgb(64,91,164)));
}
Just simply add that logic in your onFinish() method:
#Override
public void onFinish() {
//here add the code for starting a new activity
}
I have an Android service running in the background.
I want to be notified after a specific period of time (22 seconds), so I wrote:
private CountDownTimer mCountDownTimer = new CountDownTimer(22*1000,22*1000) {
public void onTick(long millisUntilFinished) {}
public void onFinish() {
doSomething();
}
};
I run this, and get the notification after 40 seconds, and even 50 seconds. Am I doing something wrong? How can this be done?
Actually you are putting interval time as wll 22000, what this you are doing wrong. Second parameter is the interval.So , Do this :
CountDownTimer alertTimer = new CountDownTimer(22*1000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
// Do here what you want
}
#Override
public void onFinish() {
}
}.start();
I'm creating an app that connect with server(localhost).
In my Activity, I have a countdown timer which will tick for 30 seconds and at the finish() I have some code to check if there's any changes in the database on server, and then start the timer again so it'll be a loop in the activity. But the timer seem like running just once. When I'm running in debug mode, the timer get some error at the finish(), it said that I'm missing some folder or file that related to the API or the SDK version which is being run in android:targetSdkVersion="9"
Please help me with this issue. Here's the activity:
public class Account_Activity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
//Creating the UI and some methods
counter = new CountDownTimer(30000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
//Codes for checking the changes in the database on the server
start();
}
};
counter.start();
}
}
Do I have to make a thread or not?
public class Account_Activity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
//Creating the UI and some methods
counter = new CountDownTimer(30000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
//Codes for checking the changes in the database on the server
new CountDownTimer(30000, 1000).start(); <------Start Again.
}
};
counter.start();
}
}
i just started to learn creating android apps. I wanted to create a simple count down timer that takes a value from a edittext but countdown timer does not seem to run.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
countDownTxt = (TextView) findViewById(R.id.countDownView);
intervalTxt = (TextView) findViewById(R.id.intervalText);
findViewById(R.id.startBN).setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
int testInt = 30;
//countDownTxt.setText(intervalTxt.getText());
int interval = Integer.parseInt(intervalTxt.getText().toString());
Log.d("buttonpressed", "interval for countdown is " + interval);
cdt = new CountDownTimer(Integer.parseInt(intervalTxt.getText().toString()), 1000) {
public void onTick(long millisUntilFinished) {
Log.d("counttimer1", "haha1");
countDownTxt.setText(""+ millisUntilFinished / 1000);
}
public void onFinish() {
cancel();
}
}.start();
}
}
);
}
In particular, this program works only if i enter a numerical value such as 30000 in the 1st parameter of the CountDownTimer "cdt = new CountDownTimer(testInt, 1000)"
Can someone enlighten me please? Thank you!
"Doesn't work" how? You should post the error message you're getting or other symptoms of "doesn't work."
What's probably happening is CountDownTimer accepts only long values as the first parameter of its constructor. Not int values.
Change int testInt = 30 to long testLong = 10000.0f and see what happens.
The first parameter means milliseconds, by the way, so "30" isn't really going to get you much in the first place.
onTick() method is called in a separate Thread. But you don't have right to use setText() method outside the GUI Thread.
You must use a Handler object or Activity.postOnUiThread() method to execute something in the GUI Thread :
cdt = new CountDownTimer(Integer.parseInt(intervalTxt.getText().toString()), 1000) {
public void onTick(long millisUntilFinished) {
Log.d("counttimer1", "haha1");
runOnUiThread(new Runnable() {
#Override
public void run() {
countDownTxt.setText("" + millisUntilFinished / 1000);
}
});
countDownTxt.setText(""+ millisUntilFinished / 1000);
}
public void onFinish() {
cancel();
}
}.start();
For more informations, read http://developer.android.com/guide/components/processes-and-threads.html#Threads
i am developing a game.i want to display score on button click.but it should be displayed only for few seconds.i want to implement timer in my app.but i dnt knw how to implement that.i searched in the google.but results were confusing me...given below is my code snippet.plz anybody help me...
OnClickListener clickball=new OnClickListener() {
#Override
public void onClick(View v) {
score=scorenumber.nextInt(9);
id=v.getId();
Log.v("", "u clicked me");
if(id==R.id.ball2)
{
ball2.setText(Integer.toString(score));
}
else if(id==R.id.ball3)
{
ball3.setText(Integer.toString(score));
}
else if(id==R.id.ball5)
{
ball5.setText(Integer.toString(score));
}
}
}
Something like
//Show score here
Timer timer = new Timer();
timer.schedule(new TimerTask() {
public void run() {
//hide score here
}
}, 2000);
will hide your score after two seconds.
No need to go so deep in your case. Every view has postDelayed() method, that will run a custom code in UI thread after a set amount of time (in milliseconds). For example:
ball5.postDelayed(new Runnable(){
#Override
public void run() {
ball5.setText("");
}
}, 3000);
will clear "ball5" text after 3 seconds has passed
Another example
...
if(id==R.id.ball2)
{
ball2.setText(Integer.toString(score));
ball2.postDelayed(new Runnable(){
#Override
public void run() {
ball2.setText("");
}
}, 3000);
}
...
you can use CountDownTimer(); refer the documentation ,
Example :
new CountDownTimer(5000,1000) {
#Override
public void onTick(long millisUntilFinished) {}
#Override
public void onFinish() {
//hide your score here after 5 secondes (5000/1000)
}
}.start();
I think CountDownTimer is that what you need:http://developer.android.com/reference/android/os/CountDownTimer.html . It's quite simle for implementation
new CountdownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
}
public void onFinish() {
mTextField.setText("done!");
}
}.start();