如何将 TextView 值转换为整数

Question

编程勇士们好，请帮我解决这个简单的问题，我是 android 新手。如何将 TextView 值转换为整数。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，以便将其添加到另一个分数，谢谢。 PS。 Toast.makeText(appleTrivia.this, "你的分数是：" + total, Toast.LENGTH_LONG).show();给我0分。

Answer 1

首先，您可能需要使用正则表达式删除Score : 文本：

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

然后将其解析为整数：

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

尝试设置总计值并使用不同的字符串显示您的结果，如果您想将 int 添加到另一个，您可以使用总计并再次显示它。

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();
    }
}