Question

我有一个有3个问题/等级测验游戏的测验游戏但如果我点击了mainactivity.class中的按钮，我怎样才能将我的高分设置为2/3或1/3或3/3。我的代码流是这样的：我的mainactivity上有一个高分按钮，如果你单击它，你将意图在highscore.class中设置文本得分。

public class MainActivity extends Activity  {
Button highscore;
String highestScore;
int score;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
    // TODO Auto-generated method stub
highscore = (Button) findViewById(R.id.save);
highscore.setOnClickListener(new View.OnClickListener() {

    @Override   
       public void onClick(View v) {

       SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
       if (score > preferences.getInt("score", 0)) {
            preferences.edit().putInt("score", score).commit();
       }
       Intent showHighScore = new Intent(MainActivity.this, highscore.class);
       showHighScore.putExtra("current_score", score);
       startActivity(showHighScore);
    }
});
}
}

highscore.class

public class highscore extends Activity {
Button back;
TextView highScore;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.highscore);
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
    int currentScore = getIntent().getIntExtra("current_score", 0);
    highScore = (TextView) findViewById(R.id.tv_highscore);
    highScore.setText(currentScore + " / " + preferences.getInt("score", 3));


    back = (Button) findViewById(R.id.btn_back);
    back.setOnClickListener(new View.OnClickListener() {
        @Override   
       public void onClick(View v) {
            Toast.makeText(getApplicationContext(),"Back",
                    Toast.LENGTH_SHORT).show();

    }
 });    
    // TODO Auto-generated method stub
}
}

Answer 1

int currentScore = getIntent().getIntExtra("current_score", 0)

您在这里得到0，因为如果您的意图有误，默认值为0。

请务必先设置得分

showHighScore.putExtra("current_score", score);

您只需更改

int currentScore = getIntent().getIntExtra("current_score", 0);

到

int currentScore = getIntent().getIntExtra("current_score", 999);

以查看999/3，以便您知道出了什么问题

高分，将文字设置为你的分数

1 个答案: