在我的应用程序中,我有一个包含 6 个鸭子图像的水平滚动视图,而水平滚动视图可以正常工作,现在我想在水平滚动视图下方添加一个 SeekBar,以便移动搜索栏将水平滚动视图定位到正确的项目。
我编写的代码如下:
搜索栏:
seekBar1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener()
{
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
seekBar.setProgress(progress);
if (progress ==5) {mLinearLayout.scrollTo(R.drawable.d_duck400_5, 0);}
if (progress ==4) {mLinearLayout.scrollTo(R.drawable.d_duck400_4, 0);}
if (progress ==3) {mLinearLayout.scrollTo(R.drawable.d_duck400_3, 0);}
if (progress ==2) {mLinearLayout.scrollTo(R.drawable.d_duck400_2, 0);}
if (progress ==1) {mLinearLayout.scrollTo(R.drawable.d_duck400_1, 0);}
if (progress ==0) {mLinearLayout.scrollTo(R.drawable.d_duck400_0, 0);}
}
});
}
水平滚动视图:
private void getDeviceWidth()
{
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
mWidth = dm.widthPixels;
}
private void initView()
{
int[] imageArray = { R.drawable.d_duck400_0, R.drawable.d_duck400_1, R.drawable.d_duck400_2,
R.drawable.d_duck400_3, R.drawable.d_duck400_4, R.drawable.d_duck400_5};
// int[] imageArray = { R.drawable.d_duck1_400, R.drawable.d_duck1_400, R.drawable.d_duck1_400,
// R.drawable.d_duck1_400, R.drawable.d_duck1_400, R.drawable.d_duck1_400};
mLinearLayout = (LinearLayout) findViewById(R.id.scrollview_layout);
mLinearLayout.removeAllViews();
for (int i = 0; i < 6; i++)
{// Place 6 items into horizontalscrollview
int width = mWidth /1;
LinearLayout itemLayout = (LinearLayout) LinearLayout.inflate(Duck.this, R.layout.d_scrollview_item, null);
itemLayout.setLayoutParams(new LayoutParams(width, LayoutParams.MATCH_PARENT));// set the width as 1 screen showing 3 items
itemLayout.setGravity(Gravity.CENTER_VERTICAL);
ImageView mImageView = (ImageView) itemLayout.findViewById(R.id.imageview);
TextView mTextView = (TextView) itemLayout.findViewById(R.id.textview);
final String page = "The" + (i + 1) + "th page";
mTextView.setText(page);
mImageView.setBackgroundResource(imageArray[i]);
mLinearLayout.addView(itemLayout);
itemLayout.setOnTouchListener(new OnTouchListener()
{
public boolean onTouch(View v, MotionEvent event)
{
// Toast.makeText(Duck.this, "Click" + page, Toast.LENGTH_SHORT).show();
return false;
}
});
}
}
问题:
一旦我移动搜索栏,水平滚动视图中的图片都消失了。
怎么了?提前感谢您的建议!