Question

我有一个viewpager，它应该只导航图像下面的imageview和text视图。但是，viewpager会在整个屏幕上滑动。有人可以帮忙吗？我的片段类：

          public class ImageAdapter extends PagerAdapter {
           Context context;
              String[] name,values;
           int[] GalImages;
           LayoutInflater inflater;

    public ImageAdapter(Context context, int[] GalImages, String[] name){
    this.context=context;
    this.GalImages = GalImages;
    this.name = name;
}

@Override
public int getCount() {

    return GalImages.length;
}

@Override
public boolean isViewFromObject(View view, Object object) {
    return view == ((RelativeLayout) object);
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
    TextView txtname;
    ImageView imgflag;
    ImageView imgtop;
    TextView topText;
    inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View itemView = inflater.inflate(R.layout.imageadapterlayout, container,
            false);
      txtname = (TextView)itemView.findViewById(R.id.tvName);
      txtname.setText(name[position]);
    Button b1=(Button) itemView.findViewById(R.id.Btton);
    topText =(TextView)itemView.findViewById(R.id.TV0);
    imgflag = (ImageView) itemView.findViewById(R.id.img);
    imgflag.setImageResource(GalImages[position]);
    ((ViewPager) container).addView(itemView);

    imgtop = (ImageView)itemView.findViewById(R.id.ImageView1);
    imgtop.setImageResource(R.drawable.maruti);

          return itemView;


}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    ((ViewPager) container).removeView((RelativeLayout) object);
}
 }

我的主要活动：

public class MainActivity5 extends ActionBarActivity {
private ImageView ImageView;
TextView textView;
ImageView Image;
String[] name;
int[] GalImages;
ViewPager viewPager;
PagerAdapter adapter;
ImageButton leftNav,rightNav;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.viewpager_main);

    name = new String[] {"Alto K10","Swift","Dzire"};
    GalImages = new int[] {
            R.drawable.alto,
            R.drawable.swift,
            R.drawable.dzire

            };

    viewPager = (ViewPager) findViewById(R.id.view_pager);
    adapter = new ImageAdapter(MainActivity5.this,GalImages,name);
    leftNav = (ImageButton) findViewById(R.id.left_nav);
    rightNav = (ImageButton)findViewById(R.id.right_nav);
    viewPager.setAdapter(adapter);
  }
  }

片段xml：

           <RelativeLayout       
        android:layout_width="match_parent"
         android:layout_height="match_parent"
       android:background="@android:color/white">
    <RelativeLayout
    android:id="@+id/header"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
   </RelativeLayout>

 <ImageView
    android:layout_width="wrap_content"
    android:layout_height="150dp"
    android:id="@+id/img"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="160dp"/>
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/namelabel"
    android:id="@+id/tvName"
    android:layout_marginTop="350dp"
    android:layout_centerHorizontal="true"
    android:textSize="18sp"
    android:textColor="#000"/>

<Button
    android:layout_width="fill_parent"
    android:background="#ffc14e"
    android:layout_height="wrap_content"
    android:id="@+id/Btton"
    android:text="Select"

    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:textColor="@android:color/black"
    android:layout_marginTop="450dp"
    android:layout_marginLeft="10dp"
    android:layout_centerHorizontal="true"
    />
      </RelativeLayout>

MainActivity5 xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
 >
<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
   >
<android.support.v4.view.ViewPager
    android:id="@+id/view_pager"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
   />

</FrameLayout>
</RelativeLayout>

Answer 1

您可以将TextView保留在Activity中，而不是将其保持在膨胀的布局中。如果您在同一布局中有图像和文本，则所有内容都会在滑动时滚动。

将addOnPageChangeListener与viewpager一起使用以检测适配器位置并相应地更新活动中的textview。

viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}
            @Override
            public void onPageSelected(int position) {
               // update your TextView here 
               txtView.setText(name[position]);
                }
            }
            @Override
            public void onPageScrollStateChanged(int state) {}
        });

Android viewpager仅适用于imageview

1 个答案: