因此,如果您点击播放随机活动(测验问题),则会显示主活动(主屏幕)中的代码。问题是,我试图将整数,默认分数传递给问题#1,其中分数将为5(这是默认值)。
如果用户点击了错误的按钮,则会将用户导航到问题#2,对于问题#2,分数将为-2,小于2。
int defaultScore = 51;
// start Play Intent
public void onPlay(View view){
Random r = new Random();
int XML_random = r.nextInt(5)+1; // 5 different Quiz XML files
Intent startQuiz = new Intent();
switch(XML_random){
case 1:
startQuiz.setClass(view.getContext(), Quiz_1.class);
break;
case 2:
startQuiz.setClass(view.getContext(), Quiz_2.class);
break;
case 3:
startQuiz.setClass(view.getContext(), Quiz_3.class);
break;
case 4:
startQuiz.setClass(view.getContext(), Quiz_4.class);
break;
case 5:
startQuiz.setClass(view.getContext(), Quiz_5.class);
break;
} // end of the Random switch
startQuiz.putExtra("passScore", defaultScore);
startActivity(startQuiz);
}
所以,接下来如果选择随机活动,那么它的分数将是5,因为对于第一个问题,我希望用户以5开头作为开始。所以,这是一个激活(问题#1),如果用户点击了错误的按钮,那么问题#2就会显示出来。对于此活动,分数将为负2.因为用户选择了错误的答案。
问题1 - 用户点击了错误的按钮:
public class Quiz_1 extends Activity {
TextView textviewScore;
int current_score = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.quiz_1);
textviewScore = (TextView) findViewById(R.id.q_result); // declaring the TextView
Bundle extras = getIntent().getExtras();
if (extras != null)
{
current_score = extras.getInt("passScore");
}
textviewScore.setText(String.valueOf(current_score));
} // end of onCreate
public void on_quiz_1_wrong(View view){ // button clicked the wrong answer
current_score = current_score - 2;
Intent quiz1 = new Intent(this, Quiz_2.class);
startActivity(quiz1);
quiz1.putExtra("passNewScore", current_score);
}
这是问题#2,对于这项活动,我希望得分为负2。
public class Quiz_2 extends Activity {
TextView textviewScore;
int current_score = 0;
int getScore=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.quiz_2);
textviewScore = (TextView) findViewById(R.id.q_result); // declaring the TextView
Bundle extras = getIntent().getExtras();
if (extras != null)
{
current_score = extras.getInt("passScore");
getScore = extras.getInt("passNewScore");
}
current_score = current_score - getScore;
textviewScore.setText(String.valueOf(current_score));
} // end of onCreate
答案 0 :(得分:1)
你必须首先加注你的意图然后开始它。
quiz1.putExtra("passNewScore", current_score);
startActivity(quiz1);
答案 1 :(得分:0)
你没有在quiz1中传递密钥“passScore”的值并调用quiz2,那么你怎么能期望在quiz2中检索“passScore”的值?
在此方法on_quiz_1_wrong(View view)