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();
}
}
Related
I ve got this function here:
public void stoprecording()
{
this.recorder.stop();
this.recorder.reset();
this.recorder.release();
}
which stops the recoridng. This is within the class Audio. I also got this function here:
public void recordtimer(final int timer)
{
/*First Part with timer*/
Thread thread = new Thread(new Runnable()
{
#Override
public void run()
{
CountDownTimer countDowntimer = new CountDownTimer(timer, 100000)
{
public void onTick(long millisUntilFinished) {}
public void onFinish() {
this.stoprecording();
}
};countDowntimer.start();
}
});
thread.start();
this.stoprecording();
}
also within the class Audio. I can´t execute this.stoprecording(); because the class CountDownTimer doesn t have this function. How can I execute this function?
Looking at your code it seems there is no need to call stoprecording() from this, since it does not belong to CountDownTimer class you have defined.
Just call it like
public void onFinish() {
stoprecording();
}
or if you want to definitely use this, follow the #gary111 suggestion thus doing
public void onFinish() {
YourClass.this.stoprecording();
}
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);
}
i want to save the time when countDownTimer begin working, is there any method like onStart()?
timeToDirectAnswer = new CountDownTimer(25000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
}
};
The timer starts ticking the moment start() is called on it. You can get the current time wherever start() is called.
i need to include timer in my application.i just gone through the example given in the sites.and tried to implement that in my program.but the thing is i dont know how to work with timer.in my program i want to start the timer on a button click.timer has to show in the screen.but the screen is a canvas(when we click on button it loads a canvas) with moving objects.when two objects collide timer has to stop and has to show the value in a message box.given below is my main activity code.
public class MyActivity extends Activity {
private static final String TAG = MyActivity.class.getSimpleName();
public static Timer myTimer;
private Button startbtn;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
startbtn=(Button)findViewById(R.id.startbtn);
startbtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
// making it full screen
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
// set our MainGamePanel as the View
setContentView(new MainGamePanel(getApplicationContext()));
Log.d(TAG, "View added");
}
});
myTimer = new Timer();
myTimer.schedule(new TimerTask() {
#Override
public void run() {
TimerMethod();
}
}, 0, 1000);
}
#Override
protected void onDestroy() {
Log.d(TAG, "Destroying...");
super.onDestroy();
}
#Override
protected void onStop() {
Log.d(TAG, "Stopping...");
super.onStop();
}
private void TimerMethod()
{
//This method is called directly by the timer
//and runs in the same thread as the timer.
//We call the method that will work with the UI
//through the runOnUiThread method.
this.runOnUiThread(Timer_Tick);
}
private Runnable Timer_Tick = new Runnable() {
public void run() {
//This method runs in the same thread as the UI.
//Do something to the UI thread here
}
};
}
i know how to check collision.i need only timer part like starting timer,showing on the screen and stopping it from another class.can anybody help me...plz....
Use this the code will be repeated after one second and timer will run for 30sec
new CountdownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
}
public void onFinish() {
finish();
}
}.start();
I have one activity. OnCreate the activity gets the source (html) of a web page to a string and presents the result (after parsing it a bit) in a textview.
I would like the activity to reload/refresh periodically to always present the latest information.
What is the best solution for this?
First of all... separate the updating logic from your onCreate method. So, for instance, you can create an updateHTML().
Then, you can use a Timer in order to update the page periodically:
public class YourActivity extends Activity {
private Timer autoUpdate;
public void onCreate(Bundle b){
super.onCreate(b);
// whatever you have here
}
#Override
public void onResume() {
super.onResume();
autoUpdate = new Timer();
autoUpdate.schedule(new TimerTask() {
#Override
public void run() {
runOnUiThread(new Runnable() {
public void run() {
updateHTML();
}
});
}
}, 0, 40000); // updates each 40 secs
}
private void updateHTML(){
// your logic here
}
#Override
public void onPause() {
autoUpdate.cancel();
super.onPause();
}
}
Notice that I'm canceling the updating task on onPause, and that in this case the updateHTML method is executed each 40 secs (40000 milliseconds). Also, make sure you import these two classes: java.util.Timer and java.util.TimerTask.