当按下另一个按钮时停止Android CountDownTimmer

Question

因此，我在大约一年前的Android Studio中设计了一个Android应用程序，以便在我的大学里照顾一些事情。但是，我从来没有“完全完成”它。对我来说缺少的一件事是当我点击一个按钮启动一个计时器并输出一个字符串。但是，如果在定时器启动之前按下另一个按钮，它会同时显示。在网上寻找时，我还没有找到我正在寻找的东西，所以我想我会打开它到Stackoverflow社区，也许你可以指引我朝着正确的方向前进。现在代码。

package com.example.james.texttospeech; 



import android.os.Bundle; 
import android.app.Activity; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.view.View; 
import android.widget.EditText; 
import android.speech.tts.TextToSpeech; 
import android.speech.tts.TextToSpeech.OnInitListener; 
import android.content.Intent; 
import java.util.Locale; 
import android.widget.Toast; 
import android.os.CountDownTimer; 



public class MainActivity extends Activity implements OnClickListener, OnInitListener { 

    //TTS object 
    private TextToSpeech myTTS; 

    //status check code 
    private int MY_DATA_CHECK_CODE = 0; 

    //create the Activity 
    public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     //get a reference to the button element listed in the XML layout 
     Button speakButton = (Button)findViewById(R.id.speak); 


     //listen for clicks 
     speakButton.setOnClickListener(this); 

     //check for TTS data 
     Intent checkTTSIntent = new Intent(); 
     checkTTSIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA); 
     startActivityForResult(checkTTSIntent, MY_DATA_CHECK_CODE); 


    } 

    //respond to button clicks 
    public void onClick(View v) { 

     //get the text entered 
     EditText enteredText = (EditText)findViewById(R.id.enter); 
     String words = enteredText.getText().toString(); 
     speakWords(words); 

    } 
    public void BRC (View view) { 
     new CountDownTimer(65000, 6000) { 

      public void onTick(long millisUntilFinished) { 
       String words1 = ("BRC will form up in" + millisUntilFinished/6000 + " minutes"); 
       speakWords(words1); 
      } 

      public void onFinish() { 
       String words2 = ("BRC will form up right away"); 
       speakWords(words2); 
      } 
     }.start(); 


} 


    public void SRC (View view1) { 

     new CountDownTimer(65000, 6000) { 

      public void onTick(long millisUntilFinished) { 
       String words3 = ("SRC will form up in" + millisUntilFinished/6000 +" minutes"); 
       speakWords(words3); 
      } 

      public void onFinish() { 
       String words4=("SRC will form up right away"); 
       speakWords(words4); 
      } 
     }.start(); 
    } 

    public void Taps (View view2) { 

     new CountDownTimer(65000, 6000) { 

      public void onTick(long millisUntilFinished) { 
       String words5 = ("Taps will sound in" + millisUntilFinished/6000 +" minutes"); 
       speakWords(words5); 
      } 

      public void onFinish() { 
       String words6=("Attention inside and outside of barracks the status in barracks is now Taps C C Q at the beginning of this turnout there was a status check"); 
       speakWords(words6); 
      } 
     }.start(); 
    } 

    public void Penalty_Tours (View view3) { 

     new CountDownTimer(65000, 6000) { 

      public void onTick(long millisUntilFinished) { 
       String words7 = ("P Tees will form up in" + millisUntilFinished/6000 +" minutes"); 
       speakWords(words7); 
      } 

      public void onFinish() { 
       String words8=("P Tees will form up right away"); 
       speakWords(words8); 
      } 
     }.start(); 
    } 

    public void Colors (View view4) { 

     String words9 = ("Colors Colors Colors"); 
     speakWords(words9); 
    } 

    public void PTT (View view5) { 

     new CountDownTimer(65000, 6000) { 

      public void onTick(long millisUntilFinished) { 
       String words10 = ("P T T will form up in" + millisUntilFinished/6000 +" minutes"); 
       speakWords(words10); 
      } 

      public void onFinish() { 
       String words11=("P T T will form up right away"); 
       speakWords(words11); 
      } 
     }.start(); 

    } 



    //speak the user text 
    private void speakWords(String speech) { 

     //speak straight away 
     myTTS.speak(speech, TextToSpeech.QUEUE_FLUSH, null); 

    } 

    //act on result of TTS data check 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 

     if (requestCode == MY_DATA_CHECK_CODE) { 
      if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) { 
       //the user has the necessary data - create the TTS 
       myTTS = new TextToSpeech(this, this); 

      } 
      else { 
       //no data - install it now 
       Intent installTTSIntent = new Intent(); 
       installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA); 
       startActivity(installTTSIntent); 
      } 
     } 
    } 

    //setup TTS 
    public void onInit(int initStatus) { 

     //check for successful instantiation 
     if (initStatus == TextToSpeech.SUCCESS) { 
      if(myTTS.isLanguageAvailable(Locale.US)==TextToSpeech.LANG_AVAILABLE) 
       myTTS.setLanguage(Locale.US); 
     } 
     else if (initStatus == TextToSpeech.ERROR) { 
      Toast.makeText(this, "Sorry! Text To Speech failed...", Toast.LENGTH_LONG).show(); 
     } 
    } 
} 

任何帮助将不胜感激。

public void BRC(View view) { 
    int totaltime = 6500; 
    CountDownTimer mTimer = new CountDownTimer(totaltime, 6000) { 

     public void onTick(long millisUntilFinished) { 
      String words1 = ("BRC will form up in" + millisUntilFinished/6000 + " minutes"); 
      speakWords(words1); 
     } 

     public void onFinish() { 
      String words2 = ("BRC will form up right away"); 
      speakWords(words2); 
     } 
    }.start(); 

void SRC() { 
    mTimer.cancel(); 
} 

}

Answer 1

在MainActivity功能，声明一个变量来定义每个计数器的状态。在所有计数器的onTick（）中，使其检查变量

希望得到这个帮助。

public class MainActivity extends Activity implements OnClickListener, OnInitListener { 

//TTS object 
private Boolean isBRCRunning = false; 
private Boolean isPTTRunning = false; 
private static CountDownTimer myBRC; 
private static CountDownTimer myPTT; 

// 

    //respond to button clicks 
public void onClick(View v) { 

    // ..... 

    // If BRC button 
    if(BRC button){ 
     BRC(); 
     isBRCRunning = true; 
    } else if (PTT button){ 
     BRC(); 
     isBRCRunning = true; 
    } 

} 

public void BRC() { 
    myBRC = new CountDownTimer(65000, 6000) { 

     public void onTick(long millisUntilFinished) { 
      String words1 = ("BRC will form up in" + millisUntilFinished/6000 + " minutes"); 
      MainActivity.logForDebug(MainActivity.TAG, words1); 

      // Control other timer 
      if(isPTTRunning){ 
       myPTT.cancel(); 
       isPTTRunning = false; 
      } 
     } 

     public void onFinish() { 
      String words2 = ("BRC will form up right away"); 
      MainActivity.logForDebug(MainActivity.TAG, words2); 
     } 
    }.start(); 
} 

public void PTT() { 
    myPTT = new CountDownTimer(65000, 6000) { 

     public void onTick(long millisUntilFinished) { 
      String words1 = ("BRC will form up in" + millisUntilFinished/6000 + " minutes"); 
      MainActivity.logForDebug(MainActivity.TAG, words1); 

      // Control other timers 
      if(isBRCRunning){ 
       myBRC.cancel(); 
       isBRCRunning = false; 
      } 
     } 

     public void onFinish() { 
      String words2 = ("BRC will form up right away"); 
      MainActivity.logForDebug(MainActivity.TAG, words2); 
     } 
    }.start(); 
} 

}