Android 如何在不同类的列表中设置EditText？

基本上我想要的是：当一个人点击一个按钮回答“否”时，我希望空文本视图更改为“为什么？”？然后他们可以在编辑文本框中输入原因。最后一节课可以列出所有问题。安卓

 package com.toc.maintenance;

 import java.text.SimpleDateFormat;
 import java.util.Calendar;

 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;

 public class Safety extends Activity {
Button yes, No, NA, done;

TextView display;

@SuppressLint("SimpleDateFormat")
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.safety);
    No = (Button) findViewById(R.id.bNo);
    yes = (Button) findViewById(R.id.bYes);
    display = (TextView) findViewById(R.id.textView2);
    SimpleDateFormat dateFormat = new SimpleDateFormat(
            "yyyy/MM/dd HH:mm:ss");
    Calendar cal = Calendar.getInstance();
    String starttime = dateFormat.format(cal.getTime());

    Intent i = new Intent(getApplicationContext(), Report.class);
    i.putExtra("starttime", starttime);

    yes.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent Safety1 = new Intent(getApplicationContext(),
                    Safety1.class);
            startActivity(Safety1);

        }

    });
    NA = (Button) findViewById(R.id.bNA);

    NA.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent Safety1 = new Intent(getApplicationContext(),
                    Safety1.class);
            startActivity(Safety1);

        }
    });

    No.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            display.setText("Why?");
        }

    });
    done.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

 //here (at done button)is where I want to capture the editText for the final class 
 //"Report". I have an editBox with "@+id/explain" tag.  
 //But I am going to keep on adding text throughout the app. 
 //I've tried a setText, super, etc. But I just can't get it right. Thanks in advance.
        }

    });

}

---

}如果你指的是课堂活动，

---

您可以使用EditTextInstance.getText，然后可以通过intent.putExtra或类“using constructor”将返回的字符串传递给其他Activity

使用putExtra发送字符串为什么？或者别的什么。使用getString检索它

最后使用了“是”或“否”按钮，然后在按下按钮时使用.setText。变得容易多了。