android– 如何将URL中的图像加载到viewpager中

概述我在互联网上搜索了这个问题,我找不到任何好的东西.我确实看过AndroidDeveloper网站,但他们将图像从URL加载到ImageView中.这是我的代码：Openfactsscreen活动：publicclassOpenfactsscreenextendsActivity{@OverrideprotectedvoidonCreate(BundlesavedIns

我在互联网上搜索了这个问题,我找不到任何好的东西.
我确实看过Android Developer网站,但他们
将图像从URL加载到ImageVIEw中.

这是我的代码：

Openfactsscreen活动：

public class Openfactsscreen extends Activity {    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_openfactsscreen);         VIEwPager vIEwPager = (VIEwPager) findVIEwByID(R.ID.vIEw_pager);        ImageAdapter adapter = new ImageAdapter(this);        vIEwPager.setAdapter(adapter);        }        public voID openmenu(VIEw vIEw){        Intent intent = new Intent(this, SendFact.class);        startActivity(intent); }    @OverrIDe    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.openfactsscreen, menu);        return true; }}

ImageAdapter.java：

public class ImageAdapter extends PagerAdapter {        Context context;        private int[] galImages = new int[] {        R.drawable.factcard2,        R.drawable.factcard8,        R.drawable.factcard4        };        ImageAdapter(Context context){        this.context=context;        }        @OverrIDe        public int getCount() {        return galImages.length;        }        @OverrIDe        public boolean isVIEwFromObject(VIEw vIEw, Object object) {        return vIEw == ((ImageVIEw) object);        }        @OverrIDe        public Object instantiateItem(VIEwGroup container, int position) {        ImageVIEw imageVIEw = new ImageVIEw(context);        int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_medium);        imageVIEw.setpadding(padding, padding, padding, padding);        imageVIEw.setScaleType(ImageVIEw.ScaleType.CENTER_INSIDE);        imageVIEw.setimageResource(galImages[position]);        ((VIEwPager) container).addVIEw(imageVIEw, 0);        return imageVIEw;        }        @OverrIDe        public voID destroyItem(VIEwGroup container, int position, Object object) {        ((VIEwPager) container).removeVIEw((ImageVIEw) object);        }}

activity_openfactsscreen：

    <relativeLayout    xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:layout_wIDth="fill_parent"    androID:layout_height="fill_parent"    androID:background="@drawable/backgroundotheractivitIEs" >    <androID.support.v4.vIEw.VIEwPager        androID:ID="@+ID/vIEw_pager"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:layout_below="@+ID/imageVIEw1" />    <ImageVIEw        androID:ID="@+ID/imageVIEw1"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_alignParenttop="true"        androID:layout_centerHorizontal="true"        androID:src="@drawable/factsscreen_layout" />    <Imagebutton        androID:ID="@+ID/imagebutton1"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_alignParentleft="true"        androID:layout_alignParenttop="true"        androID:layout_marginleft="23dp"        androID:layout_margintop="18dp"        androID:background="@drawable/emailbutton"        androID:onClick="openmenu" />    <Imagebutton        androID:ID="@+ID/imagebutton2"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_aligntop="@+ID/imagebutton1"        androID:layout_toRightOf="@+ID/imagebutton1"        androID:background="@drawable/informationbutton" /></relativeLayout>

一切正常,如果有人知道一个好的网站,或者如果有人想帮助我,这将是伟大的！

无论如何,谢谢你的时间,美好的一天！

解决方法:

在你的课程结束时加上这个

public class ImageAdapter extends PagerAdapter {        Context context;        private int[] galImages = new int[] {        R.drawable.factcard2,        R.drawable.factcard8,        R.drawable.factcard4        };        ImageAdapter(Context context){        this.context=context;        }        @OverrIDe        public int getCount() {        return galImages.length;        }        @OverrIDe        public boolean isVIEwFromObject(VIEw vIEw, Object object) {        return vIEw == ((ImageVIEw) object);        }        @OverrIDe        public Object instantiateItem(VIEwGroup container, int position) {        ImageVIEw imageVIEw = new ImageVIEw(context);        int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_medium);        imageVIEw.setpadding(padding, padding, padding, padding);        imageVIEw.setScaleType(ImageVIEw.ScaleType.CENTER_INSIDE);        //imageVIEw.setimageResource(galImages[position]);        new LoadImage(imageVIEw).execute("Your URL");        ((VIEwPager) container).addVIEw(imageVIEw, 0);        return imageVIEw;        }        @OverrIDe        public voID destroyItem(VIEwGroup container, int position, Object object) {        ((VIEwPager) container).removeVIEw((ImageVIEw) object);        }     private class LoadImage extends AsyncTask<String, String, Bitmap> {            ImageVIEw img=null;            public LoadImage(ImageVIEw img){                this.img=img;            }            @OverrIDe            protected voID onPreExecute() {                super.onPreExecute();            }            protected Bitmap doInBackground(String... args) {                Bitmap bitmap=null;                try {                    bitmap = BitmapFactory.decodeStream((inputStream)new URL(args[0]).getContent());                } catch (Exception e) {                    e.printstacktrace();                }                return bitmap;            }            protected voID onPostExecute(Bitmap image) {                if(image != null){                    img.setimageBitmap(image);                }            }        }`     } 

总结

以上是内存溢出为你收集整理的android – 如何将URL中的图像加载到viewpager中全部内容，希望文章能够帮你解决android – 如何将URL中的图像加载到viewpager中所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。