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hii,在我的android應用程序中有可繪製文件夾中的圖像數量。在我的佈局中有兩個按鈕: 後退和前進按鈕。單擊下一個和後退按鈕不同的2圖像會在相同的佈局上加載(所有圖像通用)。 問題:我可以在下一個/返回按鈕點擊下載圖片,但在到達最後一張圖片後,我想讓我的下一個按鈕點擊禁用,後退按鈕也一樣。當用戶在第一張圖片上時,背面按鈕將是禁止。代碼是:在點擊後退按鈕加載圖像時出現問題
public class SequencerActivity extends Activity implements OnClickListener
{ 私人INT imageCounter = 0; private ImageView imageLoader;
private int[] imageList = {R.drawable.image_wo_lbl_0, R.drawable.image_wo_lbl_1, R.drawable.image_wo_lbl_2, R.drawable.image_wo_lbl_3, R.drawable.image_wo_lbl_4, R.drawable.image_wo_lbl_5,
R.drawable.image_wo_lbl_6, R.drawable.image_wo_lbl_8, R.drawable.image_wo_lbl_9,R.drawable.image_wo_lbl_10, R.drawable.image_wo_lbl_11};
@Override
public void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.parent_frame);//this one is the common parent layout for all image views
super.onCreate(savedInstanceState);
/*requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);*/
//int image1 = R.drawable.image_w_lbl_0;
imageLoader = (ImageView) findViewById(R.id.imageLoader);
//imageLoader.setImageResource(image1);
ImageButton next = (ImageButton) findViewById(R.id.next);
ImageButton back = (ImageButton) findViewById(R.id.back);
next.setOnClickListener(this);
back.setOnClickListener(this);
//show the default image
this.loadImage(imageList[imageCounter]);
}
@Override
public void onClick(View v)
{
int imagePath = 0;
// TODO Auto-generated method stub
switch (v.getId())
{
case R.id.next:
Log.i("Tag","tag");
if(imageCounter < imageList.length)
{
imageCounter++;
imagePath = imageList[imageCounter];
if (imageCounter==(imageList.length)-1)
{
//**how to make my next button disable for last image**
}
}
break;
case R.id.back:
if(imageCounter > 0)
{
imageCounter--;
imagePath = imageList[imageCounter];
if (imageCounter==0)
{
//**how to make my back button disable for 1st image**
}
}
break;
}
this.loadImage(imagePath);
}
private void loadImage(int imagePath)
{
imageLoader.setImageResource(imagePath);
}
}
幫助please.Thanks。
當你有你的背部遺忘onClick事件
同意user440336,這將工作....... ....... – viv 2010-11-17 07:02:33
非常感謝你們倆...... – Alok 2010-11-17 07:27:29