import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import com.example.admin.lianxi04.adapter.MyAdapter1;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
import java.util.List;
public class StartActivity extends AppCompatActivity {
private SharedPreferences info;
private ViewPager view_pager;
private List<Integer> list;
private Button btn_start;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_start);
view_pager= findViewById(R.id.view_pager);
btn_start=findViewById(R.id.btn_start);
btn_start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(StartActivity.this,MainActivity.class));
finish();
}
});
list=new ArrayList<>();
list.add(R.drawable.a);
list.add(R.drawable.b);
list.add(R.drawable.c);
info = getSharedPreferences("info", MODE_PRIVATE);
boolean is_login = info.getBoolean("is_login", true);
if (is_login){
MyAdapter1 myAdapter1 = new MyAdapter1(list, StartActivity.this);
view_pager.setAdapter(myAdapter1);
view_pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
int i = view_pager.getCurrentItem();
if (i==list.size()-1){
btn_start.setVisibility(View.VISIBLE);
}else {
btn_start.setVisibility(View.GONE);
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}else {
startActivity(new Intent(StartActivity.this,MainActivity.class));
finish();
}
}
}
首次安装+viewpager
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转载自blog.csdn.net/qq_43269114/article/details/82827543
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