《2048》开发5——实现计分功能

计分显示分数方法

public class MainActivity extendsActionBarActivity {
        
         //MainAcitvity一旦构建就相当于给静态变量MainActivity赋值了，从外界可以访问到
         publicMainActivity(){
                   mainActivity=this;
         }
         publicstatic MainActivity getMainActivity() {
                   returnmainActivity;
         }
 
         privateTextView tvScore;
         privateTextView tvBestScore;
         privatestatic MainActivity mainActivity=null;//能够在外界调用MainActivity
         privateint score=0;//记分器
         privateGameView gameView;
         privateButton btnNewGame;
         publicstatic final String SP_KEY_BEST_SCORE = "bestScore";
        
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       tvScore=(TextView)findViewById(R.id.tvScore);
       tvBestScore=(TextView)findViewById(R.id.tvBestScore);
       gameView=(GameView)findViewById(R.id.gameView);
       btnNewGame=(Button)findViewById(R.id.btnNewGame);
       btnNewGame.setOnClickListener(new View.OnClickListener() {
       //animLayout=(AnimLayout) findViewById(R.id.animLayer);
                            publicvoid onClick(View v) {
                                     //TODO Auto-generated method stub
                                     gameView.startGame();
                            }
                   });
       
    }
 
 
   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
       // Inflate the menu; this adds items to the action bar if it is present.
       getMenuInflater().inflate(R.menu.main, menu);
       return true;
    }
 
   @Override
   public boolean onOptionsItemSelected(MenuItem item) {
       // Handle action bar item clicks here. The action bar will
       // automatically handle clicks on the Home/Up button, so long
       // as you specify a parent activity in AndroidManifest.xml.
       int id = item.getItemId();
       if (id == R.id.action_settings) {
           return true;
       }
       return super.onOptionsItemSelected(item);
    }
   
   //清理积分器
   public void clearScore(){
             score=0;
             showScore();
    }
   //计算总分
   public void addScore(int s) {
                   score+=s;
                   showScore();
         }
   //显示分数，并存储最高分
   public void showScore() {
                   tvScore.setText("分数为："score+"");
                   intmaxScore = Math.max(score, getBestScore());
                   saveBestScore(maxScore);
                   showBestScore(maxScore);
         }
//显示最高分
         privatevoid showBestScore(int s) {
                   tvBestScore.setText("最高分"+s+"");
                  
         }
//存储最高分
         privatevoid saveBestScore(int s) {
                   Editore = getPreferences(MODE_PRIVATE).edit();
                   e.putInt(SP_KEY_BEST_SCORE,s);
                   e.commit();              
         }
         privateint getBestScore() {
                   returngetPreferences(MODE_PRIVATE).getInt(SP_KEY_BEST_SCORE, 0);
                  
         }
   
}