Develop Reference

Making a line of code repeat in android every second

This is the line i want to repeat.
handler.postDelayed(runnableCode, 1);
This app is a tycoon app and so the user can buy upgrades and if they tap the button the get $$ and so when they buy upgrades keeping the value up-to-date is required.
package com.example.navjeevenmann.mytycoon;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private Button myButton;
private int Counter = 0;
private Button myButton2;
private TextView myTextView;
Handler handler = new Handler();
private int Test = 5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
handler.postDelayed(runnableCode, 1);
myButton = (Button) findViewById(R.id.button);
myButton2 = (Button) findViewById(R.id.button2);
myTextView = (TextView) findViewById(R.id.textView);
myButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
ButtonCounter(Counter);
}
});
myButton2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(),
SecondActivity.class);
intent.putExtra("Count", Counter);
startActivity(intent);
finish();
}
});
}
public int ButtonCounter(int Counter){
Counter+=1;
return Counter;
}
public int AutoCounter(int Counter, int add) {
Counter+=add;
return Counter;
}
public void Display(int Counter, TextView myTextView) {
String man = String.valueOf(Counter);
myTextView.setText("$" + man);
}
private Runnable runnableCode = new Runnable() {
#Override
public void run() {
// Do something here on the main thread
Counter = AutoCounter(Counter,Test);
Display(Counter, myTextView);
}
};
}

handler.postDelayed(runnableCode, 1);
call that line inside onResume() method. Make sure your show an AlertDialog to the user whenever he or she hits the button to get $$. Since the AlertDialog pops up everytime the user tries to buy $$. onResume() will be called.

Try this
private void startAnimation() {
countDownTimer = new CountDownTimer(700, 500) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
//your code to repeat
}
start();
}
}.start();
}

Android app auto increment a value by 1 with some delay

This is a part of an app that I am trying to make. I am trying to make a delay that can be set by the user so after each +1 it delays with 500 milliseconds, but soon I figured that i don't even know how to add a simple build in delay, I tried with delay(1000); it gave me Can not resolve method delay(int) then with sleep(1000); same error, then with TimeUnit.SECONDS.sleep(1); and Thread.sleep(1); nothing worked I am missing something fundamental, maybe I need to import something ? this is the whole program
if (v == swt1){
while (counter<2100000000) {
counter++;
}
scoreText.setText(Integer.toString(counter));
scoreText.setBackgroundColor(Color.BLACK);
}
Activity:
package counter.test.my.simplecount;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.TextView;
import android.app.Activity;
import android.graphics.Color;
public class MainActivity extends Activity implements OnClickListener {
Button btn1;
Button btn2;
Button btn3;
Switch swt1;
TextView textTitle;
EditText scoreText;
int counter = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn1 = (Button)findViewById(R.id.button);
btn2 = (Button)findViewById(R.id.button2);
btn3 = (Button)findViewById(R.id.button3);
swt1 = (Switch)findViewById(R.id.switch1);
scoreText = (EditText)findViewById(R.id.editText);
textTitle = (TextView)findViewById(R.id.textView);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
btn3.setOnClickListener(this);
textTitle.setTextSize(TypedValue.COMPLEX_UNIT_SP, 34);
}
#Override
public void onClick(View v) {
if (v == btn1){
counter++;
scoreText.setText(Integer.toString(counter));
scoreText.setBackgroundColor(Color.CYAN);
}
if (v == btn2){
counter--;
scoreText.setText(Integer.toString(counter));
scoreText.setBackgroundColor(Color.GREEN);
}
if (v == btn3){
counter = 0;
scoreText.setText(Integer.toString(counter));
scoreText.setBackgroundColor(Color.RED);
if (v == swt1){
while (counter<2100000000) {
counter++;
}
scoreText.setText(Integer.toString(counter));
scoreText.setBackgroundColor(Color.RED);
}
}
}
}

You can use Handler() for delay like
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
//Your Aftre delay code
}
},500);
Remember to import this:
import android.os.Handler;

Use the "Handler" with "Runnable" to auto increment a value continuously at some time delay. Here i used "1sec" time dealy.
Find below code snippet for your requirement.
Runnable runnable;
Handler handler;
int delayTimeSec = 1000; //1 Sec
handler = new Handler();
runnable = new Runnable(){
#Override
public void run() {
// Your auto increment logic...
handler.postDelayed(runnable, delayTimeSec);
}
}
handler.postDelayed(runnable, delayTimeSec);

Use thread instead of handler if you have got background tasks.
new Thread(new Runnable() {
#Override
public void run() {
///background calculations
try {
Thread.sleep(1000L);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
runOnUiThread(new Runnable() {
#Override
public void run() {
//main thread task to update user interface
}
});
}
}).start();

Android CountDown Timer in UI Thread

I try to code a CountDownTimer which can be repeated several times. My code works fine... But just one time. I don't understand why the repeated action is not done :-(
Here is my code :
package com.bigmat.MyTimer;
import android.app.Activity;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.util.Log;
import android.view.View;
import android.widget.*;
public class MainActivity extends Activity {
private TextView inputDuration;
private TextView tvCdTimer;
private Button start;
CountDownTimer myCdTimer;
NumberPicker npDuration;
CheckBox isRepeat;
TextView tvRepeat;
int nbRepeat;
int count;
/**
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
inputDuration = (TextView) findViewById(R.id.tvInputDuration);
tvCdTimer = (TextView) findViewById(R.id.tvCdTimer);
start = (Button) findViewById(R.id.btStart);
npDuration = (NumberPicker) findViewById(R.id.npDuration);
npDuration.setMaxValue(60);
npDuration.setMinValue(0);
isRepeat = (CheckBox) findViewById(R.id.cbRepeat);
start.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
count=0;
tvRepeat = (TextView) findViewById(R.id.nbRepeat);
if (tvRepeat.getText().toString().length() > 0) {
nbRepeat = Integer.parseInt(tvRepeat.getText().toString());
} else {
nbRepeat = 1;
}
runTimer();
}
});
}
public void runTimer(){
Log.i("CDT", "value of npDuration is : "+npDuration.getValue());
if (npDuration.getValue() > 0 && nbRepeat > 0) {
// create a timer
myCdTimer = new CountDownTimer(npDuration.getValue()*1000, 1000) {
public void onTick(long millisUntilFinished) {
tvCdTimer.setText("" + millisUntilFinished / 1000);
}
public void onFinish() {
tvCdTimer.setText("Done ! ");
try {
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
r.play();
} catch (Exception e) {
e.printStackTrace();
}
count++;
//condition
if (count < nbRepeat) {
Log.i("MyTimer", "value of nbRepeat :" + nbRepeat + " value of count : " + count);
myCdTimer.cancel();
myCdTimer.start();
}
}
}.start();
} else {
Toast.makeText(getApplicationContext(), "Timer is set on 0 seconds !!!", Toast.LENGTH_LONG).show();
}
}
}
Thanks in advance!

How to stop a countdown timer.....?

I am having problem in stopping a CountDownTimer. I have searched a lot but couldn't understand how to do that.
Below is my MainActivity. How can I stop the timer if RadioButton b is pressed?
import java.util.Timer;
import java.util.TimerTask;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
TextView mTextField;
RadioButton a, b, c, d, e;
final static long interval = 1000;
long timeout = 15000;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextField = (TextView) findViewById(R.id.tv);
a = (RadioButton) findViewById(R.id.rB1a);
b = (RadioButton) findViewById(R.id.rB2a);
c = (RadioButton) findViewById(R.id.rB3a);
d = (RadioButton) findViewById(R.id.rB4a);
e = (RadioButton) findViewById(R.id.rB5a);
//Timer timer = new Timer();
//timer.scheduleAtFixedRate(task, interval, interval);
TimerTask task = new TimerTask() {
#Override
public void run() {
timeout = timeout - interval;
if (timeout == 0) {
this.cancel();
displayText("finished");
return;
}
if (timeout >= 0) {
displayText("time remaining: " + String.valueOf(timeout / 1000));
a.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(getApplicationContext(), "Wrong Answer!!! ", Toast.LENGTH_LONG).show();
Intent openWordlist = new Intent("com.example.the_vocab_master.AA");
startActivity(openWordlist);
}
});
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(getApplicationContext(), "GREAT...!!! ", Toast.LENGTH_LONG).show();
}
});
}
//displayText("time remaining: " + String.valueOf(timeout / 1000));
}
};
Timer timer = new Timer();
timer.scheduleAtFixedRate(task, interval, interval);
}
private void displayText(final String text) {
this.runOnUiThread(new Runnable() {
#Override
public void run() {
mTextField.setText(text);
}
});
}
}

To cancel the timer use
timer.cancel();
in your onClick listener. It's very difficult to see in your code, because the indentation is very bad, but I think you need to declare your timer variable in the class, instead of in onCreate();
Additionally, I'd suggest you to take both setOnClickListener calls OUTSIDE of the timer run() method. What you're doing doesn't make sense.

Can't set TTS's paras via button

I tried to set TTS's paras such as pitch and speech rate by pressing a button, but somehow nothing changes when I pressed it...
See the code following, what I planned is that once I press the button SetPara, the _pitch and _rate will be set to 0.5, and
tts.setPitch(_pitch);
tts.setSpeechRate(_rate);
will set TTS's pitch and speech rate to 0.5, but the problem now is that after I pressed the SetPara button the pitch and speech rate didn't change...
Please help me out :))))
package com.example.text2speechtrail;
import java.util.Locale;
import android.app.Activity;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends Activity implements
TextToSpeech.OnInitListener {
/** Called when the activity is first created. */
private TextToSpeech tts;
private Button btnSpeak;
private EditText txtText;
private Button btnSetPara;
private EditText getPitch;
private EditText getRate;
public float _pitch;
public float _rate;
String _string_pitch = null;
String _string_rate = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tts = new TextToSpeech(this, this);
btnSpeak = (Button) findViewById(R.id.btnSpeak);
btnSetPara = (Button) findViewById(R.id.setPara);
txtText = (EditText) findViewById(R.id.txtText);
getPitch = (EditText) findViewById(R.id.getPitch);
getRate = (EditText) findViewById(R.id.getRate);
btnSetPara.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
SetPara();
}
});
// button on click event
btnSpeak.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
speakOut();
}
});
}
public void SetPara(){
_pitch = (float) 0.5;
_rate = (float) 0.5;
}
#Override
public void onDestroy() {
// Don't forget to shutdown tts!
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
#Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = tts.setLanguage(Locale.ENGLISH);
tts.setPitch(_pitch);
tts.setSpeechRate(_rate);
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "This Language is not supported");
} else {
btnSpeak.setEnabled(true);
speakOut();
}
} else {
Log.e("TTS", "Initilization Failed!");
}
}
private void speakOut() {
String text = txtText.getText().toString();
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}

You need to set on click listener for your btnSetPara button
btnSetPara.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
SetPara();
}
});
You do not need the param View in setPara
public void SetPara(){
_pitch = (float) 0.5;
_rate = (float) 0.5;
if (tts != null) {
tts.setPitch(_pitch);
tts.setSpeechRate(_rate);
}
}
private void speakOut() {
String text = txtText.getText().toString();
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}