[英]How to use the returned boolean value from method (Java)?
我在使用布尔方法的返回值时遇到麻烦。
我正在测试的分数首先是有效的:
public boolean isValidScore() {
boolean isScoreValid = true;
scoreHit = Integer.parseInt(scored.getText().toString());//convert the 3 dart score to store it as an integer
int[] invalidScores = {179, 178, 176, 175, 173, 172, 169, 168, 166, 165, 163, 162};
boolean invalidNumHit = false;
for (int i = 0; i < invalidScores.length; i++) {
if (scoreHit == invalidScores[i]) {
invalidNumHit = true;
}
}
if (scoreHit > 180 || scoreHit > scoreLeft[player] || scoreHit + 1 == scoreLeft[player] || (scoreHit == 159 && scoreLeft[player] == 159) || invalidNumHit) {
//won't adjust score left if invalid score/checkout entered
Toast toast = Toast.makeText(getApplicationContext(),
"You've entered an invalid score, Try again!", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER | Gravity.CENTER_HORIZONTAL, 0, 75);
toast.show();
scored.setText("0");//have to reset score to zero as won't do below as will return from method if invalid score
isScoreValid = false;//will exit method i.e. won't adjust scores and stats and switch player if invalid score entered.
}
return isScoreValid;
}
然后,我进入一个调用此方法的方法-如果值是false,我想从此enterClicked()方法退出-这是我的编码方式:
public void enterClicked(View sender) {
isValidScore();
if (isValidScore()) {
} else {
return;//exit method if invalid score entered.
}
//is more code here.....
}
看来isValidScore()的值始终为true-即使我输入了无效的分数(我用吐司消息对其进行了测试)。
您将两次调用isValidScore()
,而忽略第一次调用的结果。 您应该将其删除。
public void enterClicked(View sender) {
isValidScore(); // remove this line
if (isValidScore()) {
...
} else {
return;
}
}
你可以尝试一下:
if (scoreHit > 180 || scoreHit > scoreLeft[player] || scoreHit + 1 == scoreLeft[player] || (scoreHit == 159 && scoreLeft[player] == 159) || invalidNumHit) {
//won't adjust score left if invalid score/checkout entered
Toast toast = Toast.makeText(getApplicationContext(),
"You've entered an invalid score, Try again!", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER | Gravity.CENTER_HORIZONTAL, 0, 75);
toast.show();
scored.setText("0");//have to reset score to zero as won't do below as will return from method if invalid score
return false;//will exit method i.e. won't adjust scores and stats and switch player if invalid score entered.
}
return true;
对于您在上面提出的问题,以下是我的建议。
public void enterClicked(View sender) {
boolean validScore = isValidScore();
if (validScore == true) {
//Do Something
} else {
return;//exit method if invalid score entered.
}
//Default Code to be excuted
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.