当它只是一个计时器时工作正常但是当我添加了一个开关并添加了两个计时器时，停止计时器按钮被抓住工作。所有代码都粘贴在下面：
public class timer extends Activity implements OnClickListener {
private Button buttonStartTime, buttonStopTime, buttonStartTime2, buttonStopTime2, buttonStartTime3, buttonStopTime3;
private EditText edtTimerValue, edtTimerValue2, edtTimerValue3;
private TextView textViewShowTime, textViewShowTime2, textViewShowTime3; // will show the time
private CountDownTimer countDownTimer, countDownTimer2, countDownTimer3; // built in android class
// CountDownTimer
private long totalTimeCountInMilliseconds, totalTimeCountInMilliseconds2, totalTimeCountInMilliseconds3; // total count down time in
// milliseconds
private long timeBlinkInMilliseconds, timeBlinkInMilliseconds2, timeBlinkInMilliseconds3; // start time of start blinking
private boolean blink, blink2, blink3; // controls the blinking .. on and off
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_timer);
buttonStartTime = (Button) findViewById(R.id.btnStartTime);
buttonStopTime = (Button) findViewById(R.id.btnStopTime);
textViewShowTime = (TextView) findViewById(R.id.tvTimeCount);
edtTimerValue = (EditText) findViewById(R.id.edtTimerValue);
buttonStartTime2 = (Button) findViewById(R.id.btnStartTime2);
buttonStopTime2 = (Button) findViewById(R.id.btnStopTime2);
textViewShowTime2 = (TextView) findViewById(R.id.tvTimeCount2);
edtTimerValue2 = (EditText) findViewById(R.id.edtTimerValue2);
buttonStartTime3 = (Button) findViewById(R.id.btnStartTime3);
buttonStopTime3 = (Button) findViewById(R.id.btnStopTime3);
textViewShowTime3 = (TextView) findViewById(R.id.tvTimeCount3);
edtTimerValue3 = (EditText) findViewById(R.id.edtTimerValue3);
buttonStartTime.setOnClickListener(this);
buttonStopTime.setOnClickListener(this);
buttonStartTime2.setOnClickListener(this);
buttonStopTime2.setOnClickListener(this);
buttonStartTime3.setOnClickListener(this);
buttonStopTime3.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnStartTime:
if (v.getId() == R.id.btnStartTime) {
textViewShowTime.setTextAppearance(getApplicationContext(),
R.style.normalText);
setTimer();
buttonStopTime.setVisibility(View.VISIBLE);
buttonStartTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.GONE);
edtTimerValue.setText("");
startTimer();
} else if (v.getId() == R.id.btnStopTime) {
countDownTimer.cancel();
buttonStartTime.setVisibility(View.VISIBLE);
buttonStopTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.VISIBLE);
}
break;
case R.id.btnStartTime2:
if (v.getId() == R.id.btnStartTime2) {
textViewShowTime2.setTextAppearance(getApplicationContext(),
R.style.normalText);
setTimer2();
buttonStopTime2.setVisibility(View.VISIBLE);
buttonStartTime2.setVisibility(View.GONE);
edtTimerValue2.setVisibility(View.GONE);
edtTimerValue2.setText("");
startTimer2();
} else if (v.getId() == R.id.btnStopTime2) {
countDownTimer2.cancel();
buttonStartTime2.setVisibility(View.VISIBLE);
buttonStopTime2.setVisibility(View.GONE);
edtTimerValue2.setVisibility(View.VISIBLE);
}
break;
case R.id.btnStartTime3:
if (v.getId() == R.id.btnStartTime3) {
textViewShowTime3.setTextAppearance(getApplicationContext(),
R.style.normalText);
setTimer3();
buttonStopTime3.setVisibility(View.VISIBLE);
buttonStartTime3.setVisibility(View.GONE);
edtTimerValue3.setVisibility(View.GONE);
edtTimerValue3.setText("");
startTimer3();
} else if (v.getId() == R.id.btnStopTime) {
countDownTimer3.cancel();
buttonStartTime3.setVisibility(View.VISIBLE);
buttonStopTime3.setVisibility(View.GONE);
edtTimerValue3.setVisibility(View.VISIBLE);
}
break;
}
}
private void setTimer() {
int time = 0;
if (!edtTimerValue.getText().toString().equals("")) {
time = Integer.parseInt(edtTimerValue.getText().toString());
} else
Toast.makeText(timer.this, "Please Enter Minutes...",
Toast.LENGTH_LONG).show();
totalTimeCountInMilliseconds = 60 * time * 1000;
timeBlinkInMilliseconds = 30 * 1000;
}
private void startTimer() {
countDownTimer = new CountDownTimer(totalTimeCountInMilliseconds, 500) {
// 500 means, onTick function will be called at every 500
// milliseconds
@Override
public void onTick(long leftTimeInMilliseconds) {
long seconds = leftTimeInMilliseconds / 1000;
if (leftTimeInMilliseconds < timeBlinkInMilliseconds) {
textViewShowTime.setTextAppearance(getApplicationContext(),
R.style.blinkText);
// change the style of the textview .. giving a red
// alert style
if (blink) {
textViewShowTime.setVisibility(View.VISIBLE);
// if blink is true, textview will be visible
} else {
textViewShowTime.setVisibility(View.INVISIBLE);
}
blink = !blink; // toggle the value of blink
}
textViewShowTime.setText(String.format("%02d", seconds / 60)
+ ":" + String.format("%02d", seconds % 60));
// format the textview to show the easily readable format
}
@Override
public void onFinish() {
// this function will be called when the timecount is finished
textViewShowTime.setText("Time up!");
textViewShowTime.setVisibility(View.VISIBLE);
buttonStartTime.setVisibility(View.VISIBLE);
buttonStopTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.VISIBLE);
}
}.start();
}
private void setTimer2() {
int time = 0;
if (!edtTimerValue2.getText().toString().equals("")) {
time = Integer.parseInt(edtTimerValue2.getText().toString());
} else
Toast.makeText(timer.this, "Please Enter Minutes...",
Toast.LENGTH_LONG).show();
totalTimeCountInMilliseconds2 = 60 * time * 1000;
timeBlinkInMilliseconds2 = 30 * 1000;
}
private void startTimer2() {
countDownTimer2 = new CountDownTimer(totalTimeCountInMilliseconds2, 500) {
// 500 means, onTick function will be called at every 500
// milliseconds
@Override
public void onTick(long leftTimeInMilliseconds) {
long seconds = leftTimeInMilliseconds / 1000;
if (leftTimeInMilliseconds < timeBlinkInMilliseconds2) {
textViewShowTime2.setTextAppearance(getApplicationContext(),
R.style.blinkText);
// change the style of the textview .. giving a red
// alert style
if (blink2) {
textViewShowTime2.setVisibility(View.VISIBLE);
// if blink is true, textview will be visible
} else {
textViewShowTime2.setVisibility(View.INVISIBLE);
}
blink2 = !blink; // toggle the value of blink
}
textViewShowTime2.setText(String.format("%02d", seconds / 60)
+ ":" + String.format("%02d", seconds % 60));
// format the textview to show the easily readable format
}
@Override
public void onFinish() {
// this function will be called when the timecount is finished
textViewShowTime2.setText("Time up!");
textViewShowTime2.setVisibility(View.VISIBLE);
buttonStartTime2.setVisibility(View.VISIBLE);
buttonStopTime2.setVisibility(View.GONE);
edtTimerValue2.setVisibility(View.VISIBLE);
}
}.start();
}
private void setTimer3() {
int time = 0;
if (!edtTimerValue3.getText().toString().equals("")) {
time = Integer.parseInt(edtTimerValue3.getText().toString());
} else
Toast.makeText(timer.this, "Please Enter Minutes...",
Toast.LENGTH_LONG).show();
totalTimeCountInMilliseconds3 = 60 * time * 1000;
timeBlinkInMilliseconds3 = 30 * 1000;
}
private void startTimer3() {
countDownTimer3 = new CountDownTimer(totalTimeCountInMilliseconds3, 500) {
// 500 means, onTick function will be called at every 500
// milliseconds
@Override
public void onTick(long leftTimeInMilliseconds3) {
long seconds = leftTimeInMilliseconds3 / 1000;
if (leftTimeInMilliseconds3 < timeBlinkInMilliseconds3) {
textViewShowTime3.setTextAppearance(getApplicationContext(),
R.style.blinkText);
// change the style of the textview .. giving a red
// alert style
if (blink3) {
textViewShowTime3.setVisibility(View.VISIBLE);
// if blink is true, textview will be visible
} else {
textViewShowTime3.setVisibility(View.INVISIBLE);
}
blink3 = !blink; // toggle the value of blink
}
textViewShowTime3.setText(String.format("%02d", seconds / 60)
+ ":" + String.format("%02d", seconds % 60));
// format the textview to show the easily readable format
}
@Override
public void onFinish() {
// this function will be called when the timecount is finished
textViewShowTime3.setText("Time up!");
textViewShowTime3.setVisibility(View.VISIBLE);
buttonStartTime3.setVisibility(View.VISIBLE);
buttonStopTime3.setVisibility(View.GONE);
edtTimerValue3.setVisibility(View.VISIBLE);
}
}.start();
}
}
答案 0 :(得分：0)
您也需要打开停止按钮。
switch (v.getId()) {
case R.id.btnStartTime:
表示v.getId() == R.id.btnStartTime，因此检查v.getId()的值是没用的。第一个if（v.getId() == R.id.btnStartTime）将始终为true，第二个（v.getId() == R.id.btnStopTime）始终为false。