许多的Android应用软件中通常都会看到当咱们首次打开使用应用时都会看向导页,如果首次进入应用会进入向导页,第二次进入后向导页不会再出现,代码如下:
1、向导页首界面布局xml加入Viewpager
item1.xml
item2.xml
3、向导页内容布局进行与Activity关联
关联内容布局item1xml
public class item1 extends Fragment {
private View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view=inflater.inflate(R.layout.item1, null);
return view;
}
关联内容布局item2.xml
public class item2 extends Fragment {
private View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view=inflater.inflate(R.layout.item2, null);
return view;
}
}
关联内容布局item3.xml
public class item3 extends Fragment {
private View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view=inflater.inflate(R.layout.item3, null);
Button btn=(Button) view.findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//这里直接写上跳转到首页就可以,这里我就不写跳转了
Toast.makeText(getActivity(), "成功开启!", Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
4、Viewpager适配器
public class Myadapter extends FragmentPagerAdapter {
public Myadapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int arg0) {
switch (arg0) {
case 0:
//返回第1个界面
return new item1();
case 1:
//返回第2个界面
return new item2();
case 2:
//返回第3个界面
return new item3();
default:
break;
}
return null;
}
@Override
public int getCount() {
//返回的数量要和getItem中返回的界面相同
return 3;
}
}
public class MainActivity extends FragmentActivity {
public ViewPager pager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager=(ViewPager) findViewById(R.id.vp);
//Viewpager调用适配
pager.setAdapter(new Myadapter(getSupportFragmentManager()));
}
}
到这里整个向导页就结束了,想要判断应用是否第一次打开请看文章:http://blog.csdn.net/qq_26650589/article/details/53738176