Android ViewPager和PagerAdapter简单代码写法
16lz
2021-01-23
Android ViewPager和PagerAdapter简单代码写法
总是忘记，记下来备忘：
package zhangphil.test;import android.os.Bundle;import android.support.annotation.NonNull;import android.support.annotation.Nullable;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import java.util.ArrayList;public class ViewPagerActivity extends AppCompatActivity { private ArrayList images = new ArrayList<>(); @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.view_pager_activity); for (int i = 0; i < 5; i++) { ImageView imageView = new ImageView(getApplicationContext()); imageView.setImageResource(R.mipmap.ic_launcher); images.add(imageView); } ViewPager viewPager = findViewById(R.id.view_pager); viewPager.setAdapter(new VPAdapter()); } private class VPAdapter extends PagerAdapter { @Override public View instantiateItem(ViewGroup container, int position) { container.addView(images.get(position)); return images.get(position); } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView(images.get(position)); } @Override public int getCount() { return images.size(); } @Override public boolean isViewFromObject(@NonNull View view, @NonNull Object object) { return view == object; } }} 更多相关文章
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