我有大約6到7個圖像顯示在圖像查看時,當我點擊一個按鈕。我創建了以下代碼。沒有錯誤顯示,但當我點擊按鈕沒有行動。請幫我圖像不顯示圖像查看
這裏是我的代碼
package com.ditmi.courseInfoApp;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class ChangeImage extends Activity {
private ImageView Image;
private Button iButton;
private int currentImage = 0;
int[] images = { R.drawable.dzongkha, R.drawable.mouse, R.drawable.itom, R.drawable.icon, R.drawable.lap, R.drawable.office };
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.course_detail);
Image = (ImageView)findViewById(R.id.imageView);
iButton = (Button)findViewById(R.id.btnChangeImage);
//Just set one Click listener for the image
iButton.setOnClickListener(iButtonChangeImageListener);
}
View.OnClickListener iButtonChangeImageListener = new OnClickListener() {
public void onClick(View v) {
//Increase Counter to move to next Image
currentImage++;
currentImage = currentImage`enter code here` % images.length;
Image.setImageResource(images[currentImage]);
}
};
}
那是什麼您會收到錯誤更改訂單?或者你收到任何錯誤?我已經測試了你的代碼,並且它工作正常(當所有圖像加載時數組越界) – 2014-09-19 09:50:12
java.lang.NullPointerException。這是我得到的錯誤。 – 2014-09-20 04:37:57