我正在开发一个项目,我在一个屏幕上使用View Pager,如下所示:
但是你可以看到,有一个上层布局,其中列出了根据显示的页面选择的年份。当我们滑动视图寻呼机时,年份也将根据显示的页面索引更改为下一个。我必须在几年的TextViews上实现Click操作,在其上将显示相应的View Pager Page。但它怎么能实施呢?意味着当我们调用另一个View时,我们如何在View Pager中显示特定的页面索引。意味着当我们选择1998年时,页面将显示对应于1998年。我已经编写了代码,但这对我不起作用。
代码:
for (int i = 0; i < (Overview_Years.size()); i++) {
tvYear[i] = new TextView(Overview_New.this);
img_Pagination[i] = new ImageView(Overview_New.this);
//yearValue = Overview_Years.get(i).toString();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
// params.weight = 0.5f;
params.gravity = Gravity.CENTER_VERTICAL;
params.setMargins(40, 4, 0, 0);
// tvYear[i].setLayoutParams(new
// LayoutParams(LayoutParams.WRAP_CONTENT,
// LayoutParams.WRAP_CONTENT));
tvYear[i].setLayoutParams(params);
// tvYear[i].setText(Overview_Years.get(i).toString());
tvYear[i].setText(Overview_Years.get(i).toString());
tvYear[i].setTag(Overview_Years.get(i).toString());
tvYear[i].setGravity(Gravity.CENTER);
tvYear[i].setTypeface(null, Typeface.BOLD);
tvYear[i].setTextColor(Color.WHITE);
tvYear[i].setId(i);
tvYear[i].setPadding(2, 0, 1, 17);
//tvYear[i].setTag(Overview_Years.get(i-1).toString());
final TextView tv = tvYear[i];
**tvYear[i].setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
for(int i=0;i<((ViewGroup)yearHorizontalScrollView.getChildAt(0)).getChildCount();i++){
if(((TextView)arg0)== ((ViewGroup)yearHorizontalScrollView.getChildAt(0)).getChildAt(i)){
currentposition = i;
}
}**
onYearSelect(((TextView)arg0).getText().toString());
}
});
layout_Years.addView(tvYear[i]);
LinearLayout.LayoutParams paramsPagination = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
// params.weight = 0.5f;
paramsPagination.gravity = Gravity.CENTER_VERTICAL;
paramsPagination.setMargins(5, 2, 0, 0);
img_Pagination[i].setLayoutParams(paramsPagination);
/*if (i == 0) {
img_Pagination[0]
.setBackgroundResource(R.drawable.pagination_selected);
} else {*/
img_Pagination[i]
.setBackgroundResource(R.drawable.pagination_unselected);
//}
img_Pagination[i].setId(i);
layout_Pagination.addView(img_Pagination[i]);
tvYear[0].setBackgroundResource(R.drawable.selector_x);
/*tvYear[0]
.setBackgroundResource(R.drawable.selector_x);*/
//tv_Overview_AllYears.setBackgroundResource(R.drawable.selector_bg_big_new);
count=-1;
}
Thnx提前。
答案 0 :(得分:17)
您应该能够在OnClickListener中使用setCurrentItem方法(下面的语法和文档),并且您的viewpager会自动滚动(如果smoothScroll未停用)新职位。
ViewPager.setCurrentItem(int index);
OR
ViewPager.setCurrentItem(int index, boolean smoothScroll);
在这种情况下,您将索引替换为您想要的那个。因此,您可能还需要一个存储年份和页面之间关系的数组,或者您可以在年份中设置TAG(比如说位置),然后在OnClickListener上可以检索TAG转到该位置。
请参阅ViewPager docs了解详情