android - 在 android 中，我怎样才能创建一个先等待 Action 继续的循环？

Question

我正在尝试创建测验。在问题表单中，我制作了 3 个按钮，当用户单击答案时。它重新启动相同的布局和 java 类，因此出现下一个问题。好吧，这种方式不太好，因为一次又一次地调用相同的布局很痛苦。那么我如何更改代码以使其在同一布局中更改问题 20 次？我尝试了 while 函数，但它不起作用，因为它不等待按下按钮继续下一个问题(如果有命令等待用户执行操作以继续 while 循环，它会工作)。这是我的代码:

package dv.qtest.dvyzual;

import java.util.Random;  
import android.app.Activity;  
import android.content.Intent;  
import android.database.Cursor;  
import android.media.MediaPlayer;  
import android.os.Bundle;  
import android.view.View;   
import android.widget.Button;   
import android.widget.TextView;

public class startGame extends Activity {

    public void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);
        setContentView(R.layout.startgame); 
        final MediaPlayer mp2 = MediaPlayer.create(this, R.raw.correct);

        AnyDBAdapter eventsData = new AnyDBAdapter(getBaseContext());
        eventsData.open();
        myMenu.question = myMenu.question +1;
        String qq = getRandomNumber();  
        Cursor c = eventsData.ExampleSelect(qq);
        this.startManagingCursor(c);
        eventsData.close();         final String h = c.getString(5);        setQuestions(c);

        final Button r1 = (Button)findViewById(R.id.b1);
        r1.setOnClickListener (new View.OnClickListener() {             public void onClick(View v) {
                if ("1".equals(h)) {
                    r1.setBackgroundResource(R.drawable.buttonneocorrect);
                    myMenu.score = myMenu.score + 1;
                    mp2.start();
                }
                else {
                    r1.setBackgroundResource(R.drawable.buttonneowrong);
                }
                finish();
                if (myMenu.question == 20) {  
            startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.ENDQUIZGAME"));}
                else {
                startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.STARTQUIZGAME"));
                }
                            }       });         final Button r2 = (Button)findViewById(R.id.b2);
        r2.setOnClickListener (new View.OnClickListener() {             public void onClick(View v) {
                if ("2".equals(h)) {
                    r2.setBackgroundResource(R.drawable.buttonneocorrect);
                    myMenu.score = myMenu.score + 1;
                }
                else {
                    r2.setBackgroundResource(R.drawable.buttonneowrong);
                }
                finish();
                if (myMenu.question == 20) {startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.ENDQUIZGAME"));}
                else {startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.STARTQUIZGAME"));}            }       });
                final Button r3 = (Button)findViewById(R.id.b3);
        r3.setOnClickListener (new View.OnClickListener() {             public void onClick(View v) {
                if ("3".equals(h)) {
                    r3.setBackgroundResource(R.drawable.buttonneocorrect);
                    myMenu.score = myMenu.score + 1;
                    mp2.start();
                }
                else {
                    r3.setBackgroundResource(R.drawable.buttonneowrong);
                }
                finish();
                if (myMenu.question == 20) {startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.ENDQUIZGAME"));}
                else {startActivity(new Intent("dv.qtest.dvyzual.QuizTestActivity.STARTQUIZGAME"));}            }       });
        }

    private String getRandomNumber(){

        Random generator = new Random();
        int n = 49;
        n = generator.nextInt(n) +1;
        String n1 = ""+n;
        return n1;
    }

    private void setQuestions(Cursor c) {
                TextView rscore = (TextView)findViewById(R.id.q1);      rscore.setText("Score: " + myMenu.score + "             Question: "
+ myMenu.question);

        TextView r0 = (TextView)findViewById(R.id.textView1);       r0.setText(c.getString(1));
                Button r1 = (Button)findViewById(R.id.b1);      r1.setText(c.getString(2));
                Button r2 = (Button)findViewById(R.id.b2);      r2.setText(c.getString(3));
                Button r3 = (Button)findViewById(R.id.b3);      r3.setText(c.getString(4));
            }        }

Answer 1

好吧，我不会回应你的回答......因为你开始 Android 开发的方式是错误的。

你必须学习一些 OOP 的概念......按顺序阅读:

http://www.osnews.com/story/6788

http://docs.oracle.com/javase/tutorial/java/concepts/

还有一个好的代码实现:

http://source.android.com/source/code-style.html

然后...看看 android 示例，有非常好的示例，它们在:

%AndroidSDK%/示例/

此外，您还必须了解 android 架构和 android 运行: