public class GuideActivityextends AppCompatActivityimplements ViewPager.OnPageChangeListener{
ViewPagervp;
int []imageIdArray;//图片资源数组
ListviewList;//图片资源集合
ViewGroupvg;//放置小圆点
// 实例化小圆点
ImageViewiv_point;
ImageView []ivPointArray;
// 最后一页按钮
ImageButtonib_start;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.guide);
ib_start = (ImageButton) findViewById(R.id.guide_button);
ib_start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent =new Intent("Z.l.f");
startActivity(intent);
finish();
}
});
// 加载viewPager
initViewPager();
// 加载底部圆点
initPoint();
}
// 加载底部圆点
private void initPoint(){
vg = (ViewGroup) findViewById(R.id.guide_point);
// 根据Item实例化数组
ivPointArray =new ImageView[viewList.size()];
// 循环底部圆点，将生成的Image保存到数组
int size =viewList.size();
for (int i =0; i < size; i++) {
iv_point =new ImageView(this);
iv_point.setLayoutParams(new ViewGroup.LayoutParams(20,20));
iv_point.setPadding(30,0,30,0);//left,top,right,bottom
ivPointArray[i] =iv_point;
// 第一个页面被设为选中状态，所以放两张不同的图片
if (i ==0) {
iv_point.setBackgroundResource(R.drawable.point_press);
}else{
iv_point.setBackgroundResource(R.drawable.point_normal);
}
// 将数组中的Image加入到ViewGroup
vg.addView(ivPointArray[i]);
}
}
// 加载图片
private void initViewPager(){
mViewList =new ArrayList();
LayoutInflater lf = getLayoutInflater().from(MainActivity.this);
View view1 = lf.inflate(R.layout.we_indicator1,null);
View view2 = lf.inflate(R.layout.we_indicator2,null);
View view3 = lf.inflate(R.layout.we_indicator3,null);
mViewList.add(view1);
mViewList.add(view2);
mViewList.add(view3);
// 获取Layout参数，设为全局
LinearLayout.LayoutParams params =new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
// 循环创建View加入到集合中
int len =imageIdArray.length;
for (int i =0; i < len; i++) {
//new Imageview 并设置全屏和图片资源
ImageView imageview =new ImageView(this);
imageview.setLayoutParams(params);
imageview.setBackgroundResource(imageIdArray[i]);
viewList.add(imageview);
}
vp.setAdapter(new GuideAdapter(viewList));
vp.addOnPageChangeListener(this);
}
@Override
public void onPageScrolled(int position,float positionOffset,int positionOffsetPixels) {
}
//滑动后监听
@Override
public void onPageSelected(int position) {
//循环设置当前页的标记图
int length =imageIdArray.length;
for (int i =0; i < length; i++) {
ivPointArray[position].setBackgroundResource(R.drawable.point_press);
if (position != i){
ivPointArray[i].setBackgroundResource(R.drawable.point_normal);
}
}
// 判断是否是最后一页
if (position ==imageIdArray.length -1) {
ib_start.setVisibility(View.VISIBLE);
}else{
ib_start.setVisibility(View.GONE);
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
}