class name "SequencerActivity"
类型SequencerActivity必须实现继承的抽象方法DialogInterface.OnClickListener.onClick(DialogInterface, int)
。
next.setOnClickListener(this);
setOnClickListener(View.OnClickListener)
方法在 View 类型中不适用于参数 (SequencerActivity)
。
onClick(View v)
SequencerActivity
类中的 onClick(View)
方法必须覆盖或实现一个超类型方法。
以下是导致这些错误的代码:
public class SequencerActivity extends Activity implements OnClickListener
{
private int imageCounter = 0;
private ImageView imageLoader;
private int[] imageList = {R.drawable.f03, R.drawable.f04, R.drawable.f05, R.drawable.f06};
@Override
public void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.main);//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);
Button next = (Button) findViewById(R.id.next);
Button back = (Button) findViewById(R.id.back);
next.setOnClickListener(this);
back.setOnClickListener(this);
back.setEnabled(false);
//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)
{
{
ImageButton next=(ImageButton)findViewById(R.id.next);
next.setEnabled(false);
}
}
else
{
ImageButton back=(ImageButton)findViewById(R.id.back);
back.setEnabled(true);
}
}
break;
case R.id.back:
if(imageCounter > 0)
{
imageCounter--;
imagePath = imageList[imageCounter];
if (imageCounter==0)
{
ImageButton back=(ImageButton)findViewById(R.id.back);
back.setEnabled(false);
}
else
{
ImageButton next=(ImageButton)findViewById(R.id.next);
next.setEnabled(true);
}
}
break;
}
this.loadImage(imagePath);
}
private void loadImage(int imagePath)
{
imageLoader.setImageResource(imagePath);
}
}