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我正在做一个将图像动态添加到屏幕的项目。编译时绝对不会创建 XML 引用，因为整个事物都是动态生成的。

我的应用在运行时的外观

整个事情是动态生成的。现在，我想知道如何为每个图像添加 onclick 事件。基本上，当点击一个图像时，应该会出现另一个阴影较深的图像（它基本上是一个答题纸，所以它就像一个带有阴影的气泡）。在这种情况下，我想要一些示例代码。我是 Android 新手，现在几乎迷路了。

请帮忙！

PS如果需要源代码，我很乐意把它放上来。请告诉我。

编辑：放代码：

package ekalavya.pratnala.quiz;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.StringTokenizer;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.ScrollView;
import android.widget.TextView;

public class QuizActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Beginning of variable declarations
    File quizSpecs = new File("mnt/sdcard/teacher_1.csv"); // Read the file
    BufferedReader csvReader = null;
    String line = ""; // Storing each line in a string
    StringTokenizer currentLine = null;
    int noOfQuestions = 0; // Number of questions in the quiz
    int time = 0; // Duration of the quiz
    int[][] quizData; // Storing the quiz specifications in an integer array
    int i = 0, j = 0, k = 0; // Loop variables
    int[][] questionImages = {
            { R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d,
                    R.drawable.e, R.drawable.f, R.drawable.g, R.drawable.h,
                    R.drawable.i, R.drawable.j },
            { R.drawable.a_checked, R.drawable.b_checked,
                    R.drawable.c_checked, R.drawable.d_checked,
                    R.drawable.e_checked, R.drawable.f_checked,
                    R.drawable.g_checked, R.drawable.h_checked,
                    R.drawable.i_checked, R.drawable.j_checked },
            { R.drawable.zero, R.drawable.one, R.drawable.two,
                    R.drawable.three, R.drawable.four, R.drawable.five,
                    R.drawable.six, R.drawable.seven, R.drawable.eight,
                    R.drawable.nine, R.drawable.decimal },
            { R.drawable.zero_checked, R.drawable.one_checked,
                    R.drawable.two_checked, R.drawable.three_checked,
                    R.drawable.four_checked, R.drawable.five_checked,
                    R.drawable.six_checked, R.drawable.seven_checked,
                    R.drawable.eight_checked, R.drawable.nine_checked,
                    R.drawable.decimal_checked } };
    int previd = 0;
    // End of variable declarations

    try {
        csvReader = new BufferedReader(new FileReader(quizSpecs));
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        line = csvReader.readLine();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    currentLine = new StringTokenizer(line, ",");
    noOfQuestions = Integer.parseInt(currentLine.nextToken());
    time = Integer.parseInt(currentLine.nextToken());
    // System.out.println(noOfQuestions + " " + time);
    while (currentLine.hasMoreTokens()) {
        currentLine.nextToken();
    }
    quizData = new int[noOfQuestions][6];
    for (i = 0; i < noOfQuestions; i++) {
        try {
            line = csvReader.readLine();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        currentLine = new StringTokenizer(line, ",");
        for (j = 0; j < 6; j++) {
            quizData[i][j] = Integer.parseInt(currentLine.nextToken());
            // System.out.println(quizData[i][j]);
        }
    }
    try {
        csvReader.close();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    ScrollView s1 = new ScrollView(this);
    RelativeLayout r1 = new RelativeLayout(this);
    for (i = 0; i < noOfQuestions; i++) {
        System.out.println(quizData[i][2]);
        TextView questionNo = new TextView(this);
        questionNo.setText(String.valueOf(i + 1));
        questionNo.setId(1000 * (i + 1));
        questionNo.setTextSize(18);
        RelativeLayout.LayoutParams p1 = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);
        p1.addRule(RelativeLayout.BELOW, previd);
        previd = (1000 * (i + 1));
        questionNo.setLayoutParams(p1);
        r1.addView(questionNo, p1);
        switch (quizData[i][1]) {
        case 1:
        case 2:
            for (j = 0; j < 10; j++) {
                ImageView option = new ImageView(this);
                option.setImageResource(questionImages[0][j]);
                option.setId((1000 * (i + 1)) + j + 1);
                if (j >= quizData[i][2]) {
                    option.setVisibility(View.INVISIBLE);
                    option.setEnabled(false);
                }
                RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                        RelativeLayout.LayoutParams.WRAP_CONTENT,
                        RelativeLayout.LayoutParams.WRAP_CONTENT);
                params.addRule(RelativeLayout.BELOW, ((1000 * i) + 1));
                params.addRule(RelativeLayout.RIGHT_OF,
                        ((1000 * (i + 1)) + j));
                previd = ((1000 * (i + 1)) + j);
                option.setLayoutParams(params);
                r1.addView(option, params);
            }
            break;
        case 3:
            for (j = 0; j < (quizData[i][3] == 0 ? quizData[i][2]
                    + quizData[i][3] : quizData[i][2] + quizData[i][3] + 1); j++) {
                for (k = 10; k > -1; k--) {
                    ImageView num = new ImageView(this);
                    num.setImageResource(questionImages[2][10 - k]);
                    num.setId((1000 * (i + 1)) + (100 * j) + k + 1);
                    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                            RelativeLayout.LayoutParams.WRAP_CONTENT,
                            RelativeLayout.LayoutParams.WRAP_CONTENT);
                    if (j == 0) {
                        params.addRule(RelativeLayout.RIGHT_OF,
                                (1000 * (i + 1)));
                    } else {
                        params.addRule(RelativeLayout.RIGHT_OF,
                                (1000 * (i + 1)) + (100 * (j - 1)) + k + 1);
                    }
                    if (k == 10) {
                        params.addRule(RelativeLayout.BELOW, (1000 * i) + 1);
                    } else {
                        params.addRule(RelativeLayout.BELOW,
                                ((1000 * (i + 1)) + (100 * j) + k + 2));
                    }
                    num.setLayoutParams(params);
                    r1.addView(num, params);
                }
            }
            previd = (1000 * (i + 1)) + 1;
            break;
        case 4:
        case 5:
            for (j = quizData[i][2] - 1; j > -1; j--) {
                for (k = 0; k < quizData[i][3]; k++) {
                    ImageView match = new ImageView(this);
                    match.setImageResource(questionImages[0][k]);
                    match.setId((1000 * (i + 1)) + (100 * j) + k + 1);
                    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                            RelativeLayout.LayoutParams.WRAP_CONTENT,
                            RelativeLayout.LayoutParams.WRAP_CONTENT);
                    if (k == 0) {
                        params.addRule(RelativeLayout.RIGHT_OF,
                                (1000 * (i + 1)));
                    } else {
                        params.addRule(RelativeLayout.RIGHT_OF,
                                (1000 * (i + 1)) + (100 * j) + k);
                    }
                    if (j == quizData[i][2] - 1) {
                        params.addRule(RelativeLayout.BELOW, (1000 * i) + 1);
                    } else {
                        params.addRule(RelativeLayout.BELOW,
                                (1000 * (i + 1)) + (100 * (j + 1)) + k + 1);
                    }
                    match.setLayoutParams(params);
                    r1.addView(match, params);
                }
            }
            previd = (1000 * (i + 1)) + 1;
            break;
        }
    }
    s1.addView(r1, new LayoutParams(LayoutParams.FILL_PARENT,
            LayoutParams.FILL_PARENT));
    this.setContentView(s1);
}
}
4

2 回答 2

2

在您的活动中实现 OnClickListener

public class QuizActivity extends Activity implements OnClickListener
 {
   .
   .
   .


     for (j = 0; j < 10; j++) {
                ImageView option = new ImageView(this);
                option.setImageResource(questionImages[0][j]);
                option.setId((1000 * (i + 1)) + j + 1);
                option.setOnClickListener(this);  // setOnClickListener to your dynamically Image view.. 
                if (j >= quizData[i][2]) {
                    option.setVisibility(View.INVISIBLE);
                    option.setEnabled(false);
                }
                RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                        RelativeLayout.LayoutParams.WRAP_CONTENT,
                        RelativeLayout.LayoutParams.WRAP_CONTENT);
                params.addRule(RelativeLayout.BELOW, ((1000 * i) + 1));
                params.addRule(RelativeLayout.RIGHT_OF,
                        ((1000 * (i + 1)) + j));
                previd = ((1000 * (i + 1)) + j);
                option.setLayoutParams(params);
                r1.addView(option, params);
            }

// 覆盖 onClick 并放置 switch case 以区分 imageview 的点击.. 

@Override
    public void onClick(View v)
    {
        switch (v.getId())
        {
            case //id of your dynamically imageview :

            break;
                }
         }
    }
于 2012-06-15T05:50:29.940 回答
0

在 Java 中，只需在 ImageViews 上运行 setOnClickListener 方法，如下所示：

mImageView.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        ImageView iv = (ImageView) v;
        iv.setImageResource(R.id.darkbubble);
        //Do anything else you would like
    }
});
于 2012-06-15T05:36:55.720 回答