Android的ViewPager引导页面
第一次写东西不好估计是肯定的，就当给自己全面复习了解一下了。
首先不多说肯定xml里面用ViewPager。(xml居然贴不上来 简直坑爹)
其实就是对ViewPager填充下布局参数和图片直接上代码算了。。
public class SplashPageActivity extends BaseActivity {
private ViewPagerAdapter vpAdapter;
private Listviews;
private ViewPager viewpager;
private Button button;
// 引导图片资源
private static final int[] pics={ R.mipmap.stup1, R.mipmap.stup2,R.mipmap.stup3 };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_page);
initViews();
views=new ArrayList<>();
// 为引导图片提供布局参数
LinearLayout.LayoutParams mParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
for (int pic : pics) {
ImageView iv = new ImageView(this);
iv.setLayoutParams(mParams);
iv.setImageResource(pic);
views.add(iv); }
//初始化Adpter
vpAdapter =new ViewPagerAdapter(views);
viewpager.setAdapter(vpAdapter);
//跳转界面按钮
viewpager.setOnPageChangeListener(new OnPageChangeListener() {
// 当新的页面被选中时调用
@Override
public void onPageSelected(int position) {
if (position == 2) {
button.setVisibility(View.VISIBLE);
} else {
button.setVisibility(View.GONE); }
}
// 当前页面被滑动时调用
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
// 当滑动状态改变时调用
@Override
public void onPageScrollStateChanged(int state) {
} });
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(SplashPageActivity.this, AreaActivity.class);
SplashPageActivity.this.startActivity(intent);
finish(); } }); }
private void initViews() {
viewpager = (ViewPager) findViewById(R.id.viewpager);
button = (Button) findViewById(R.id.button); }
public class ViewPagerAdapter extends PagerAdapter {
//界面列表
private Listviews;
public ViewPagerAdapter(Listviews){
this.views=views;
}
//删除界面
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(views.get(position));
}
@Override
public int getCount() {
if(views!=null){
return views.size();
}
return 0;
}
//初始化position的位置界面
@Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(views.get(position), 0);
return views.get(position);
}
//判断是否由对象生成界面
@Override
public boolean isViewFromObject(View view, Object object) {
return (view==object);
}
}
}
当然可以在里面加入判断是否第一次进入 如果不是第一次直接进入跳入其他页面 如果是进入
//引导页
public boolean getGuide() {
guide = PreferenceManager.getDefaultSharedPreferences(
this).getBoolean("guide", true);
return guide;
}
/**
* 进入主页面
*/
protected void enterHome() {
if (getGuide()) {
PreferenceManager.getDefaultSharedPreferences(
SplashPageActivity.this).edit().putBoolean("guide", false).commit();
finish();
startActivity(new Intent(SplashPageActivity.this,
MainActivity.class));
overridePendingTransition(0, 0);
}
}
