Question

我正在使用viewpager以全屏显示资源/可绘制文件夹中的图像。它工作正常，滑动得很好。现在我想在SD卡中保存图像名称，但我无法获取图像文件名。如果有人请帮助我。我有谷歌它，我没有得到正确的解决方案我的期望。

码

public class MainActivity extends Activity{

        //private static Context context;
        ExtendedViewPager mViewPager;
        private static Uri imageUri;

        @Override
        public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        mViewPager = (ExtendedViewPager) findViewById(R.id.view_pager);
        mViewPager.setAdapter(new TouchImageAdapter());


    }

    static class TouchImageAdapter extends PagerAdapter {

        private static int[] images = { R.drawable.nature_1, R.drawable.nature_2, R.drawable.nature_3, R.drawable.nature_4, R.drawable.nature_5 };

        }
        @Override
        public int getCount() {
                return images.length;
        }

        @Override
        public View instantiateItem(ViewGroup container, int position) {
                //Context context = container.getContext();
            TouchImageView img = new TouchImageView(container.getContext());
            img.setImageResource(images[position]);
            img.setOnClickListener(new OnClickListener() {

                                @Override
                                public void onClick(View v) {

                               int imagid=images[position];
 System.out.println("Image name " + images[position]);
 bm = BitmapFactory.decodeStream(v.getResources().getDrawable(imagid));// here i need to pass my resId, i can't able to pass

                                }
                        });

            //img.setScaleType(TouchImageView.ScaleType.CENTER_CROP);
            container.addView(img, LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
            return img;
        }

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

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

    }


}

Answer 1

创建一个包含文件名的String[]，并将其设置为img作为标记，并在onClick中获取标记。做这样的事

 private static String[] imagesName = {"fiel1","file2",.....};
  .
  .   
 img.setImageResource(images[position]);
 img.setTag(imagesName[position]);      
 img.setOnClickListener(new OnClickListener() {

                           @Override
                            public void onClick(View v) {
                            String filename = v.getTag().toString(); 
 }   
 }

修改

如果您不想创建String[]，请将images[position]设置为img的Tag，然后在onClick中将其设置为getResources().getResourceName((Integer)v.getTag()); < / p>
这有助于我。

在view pager中获取图像文件名

1 个答案: