如何将TextView值转换为Integer

Question

好日子编程勇士，请帮我解决这个简单的问题，我是新来的android。如何将TextView值转换为Integer。请看我附上的代码，谢谢。

public class appleTrivia extends AppCompatActivity { 

    public int total = 0; 
    public int score = 40; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_apple_trivia); 


     TextView scoreLabel = (TextView) findViewById(R.id.labelScore); 
     scoreLabel.setText("Score: " + score); 
     scoreLabel.setText("Score: " + getIntent().getExtras().getInt("points", 0)); 

     try { 
      total = Integer.parseInt("score: " + scoreLabel); 
     } 
     catch (NumberFormatException nfe) 
     { 
     } 
    } 
     public void onClickProceed (View view) { 
     Intent intent = new Intent(this, cherry.class); 
     startActivity(intent); 
     Toast.makeText(appleTrivia.this, "Your score is:" + total, Toast.LENGTH_LONG).show(); 
    } 
} 

我需要将scoreLabel值转换为整数，所以我可以将它添加到另一个分数，谢谢。 PS。 Toast.makeText（appleTrivia.this，“Your score is：”+ total，Toast.LENGTH_LONG）.show（）;给我0分。

Answer 1

首先，你需要也许去除Score :文本使用正则表达式：

String str = scoreLabel.getText().toString();  
str = str.replaceAll("[^-?0-9]+", ""); 

然后解析成整型：

int total = Integer.parseInt(str); 

编辑

public class appleTrivia extends AppCompatActivity { 

    public int total = 0; 
    public int score = 40; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_apple_trivia); 


     TextView scoreLabel = (TextView) findViewById(R.id.labelScore); 
     scoreLabel.setText("Score: " + score); 
     scoreLabel.setText("Score: " + getIntent().getExtras().getInt("points", 0)); 

     try { 
      String str = scoreLabel.getText().toString();  
      str = str.replaceAll("[^-?0-9]+", ""); 
      total = Integer.parseInt(str); 
     } 
     catch (NumberFormatException nfe) 
     { 
     } 
    } 
     public void onClickProceed (View view) { 
     Intent intent = new Intent(this, cherry.class); 
     startActivity(intent); 
     Toast.makeText(appleTrivia.this, "Your score is:" + total, Toast.LENGTH_LONG).show(); 
    } 
} 

Answer 2

尝试设置总价值，只显示您的结果一个不同的字符串，如果你想添加int到另一个你可以使用total并再次显示。

public class appleTrivia extends AppCompatActivity { 
 

 
    public int total = 0; 
 
    public int score = 40; 
 
    @Override 
 
    protected void onCreate(Bundle savedInstanceState) { 
 
     super.onCreate(savedInstanceState); 
 
     setContentView(R.layout.activity_apple_trivia); 
 

 

 
     TextView scoreLabel = (TextView) findViewById(R.id.labelScore); 
 
     scoreLabel.setText("Score: " + score); 
 
     scoreLabel.setText("Score: " + getIntent().getExtras().getInt("points", 0)); 
 

 
     try { 
 
     total = Integer.parseInt(scoreLabel.getText().ToString()); 
 
     String totalScore = "Score:" + Total; 
 
     } 
 
     catch (NumberFormatException nfe) 
 
     { 
 
     } 
 
    } 
 
     public void onClickProceed (View view) { 
 
     Intent intent = new Intent(this, cherry.class); 
 
     startActivity(intent); 
 
     Toast.makeText(appleTrivia.this, "Your score is:" + totalScore, Toast.LENGTH_LONG).show(); 
 
    } 
 
}