android - TextView1 无法解析为类型

Question

我正在尝试完成有关可编辑在 main.xml 中声明的文本的教程，

eclipse 说:

-TextView1 can't be resolved to a type

-TextView2 can't be resolved to a type

-TextView1 can't be resolved to a variable

-TextView2 can't be resolved to a variable

-TextView1 can't be resolved

-TextView2 can't be resolved

这是我的代码:

package marco.prova;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Main extends Activity {
    private TextView1 textView1;
    private TextView2 textView2;

    /** Called when the activity is first created.*/

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView1 = (TextView) findViewById(R.id.testo1);
        TextView1.setText("Testo modificato tramite codice 1");

        TextView2 = (TextView) findViewById(R.id.testo2);
        TextView2.setText("Testo modificato tramite codice 2");
    }
}

感谢您的帮助。

Answer 1

TextView1 和 TextView2 不是 Android 类，但是 TextView 是。所以首先修复你的变量声明:

private TextView textView1;
private TextView textView2;

然后修正你的变量赋值和变量使用(注意小写):

textView1 = (TextView) findViewById(R.id.testo1);
textView1.setText("Testo modificato tramite codice 1");

textView2 = (TextView) findViewById(R.id.testo2);
textView2.setText("Testo modificato tramite codice 2");