點擊圖片，根據url把圖片保存到相冊

download.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                {
                    if(imgsUrl!=null){
                        final int currentItem = image_pager.getCurrentItem();

                        new Thread(new Runnable() {
                            @Override
                            public void run() {
                                try {
                                    final Bitmap myBitmap = Glide.with(BaseApplication.getmApplication())//上下文
                                            .load(imgsUrl.get(currentItem))//url
                                            .asBitmap() //必須  
                                            .centerCrop()
                                            .into(500, 500)
                                            .get() ;
                                    Log.d("sevaImage", "onClick: "+myBitmap.getByteCount());

                                    runOnUiThread(new Runnable() {
                                        @Override
                                        public void run() {
                                            SaveImageUtils.saveImageToGallerys(ImageShowActivity.this,myBitmap);
                                        }
                                    });

                                } catch (Exception e) {
                                    e.printStackTrace();
                                }
                            }
                        }).start();

                    }

                }

            }
        });

 

 

package com.uctimes.jike.util;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;

import com.uctimes.jike.BaseApplication;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Created by uctimes on 2016/10/25.
 */
public class SaveImageUtils {
    public static void saveImageToGallery(Context context, Bitmap bmp) {
        // 首先保存圖片
        File appDir = new File(Environment.getExternalStorageDirectory(), "Boohee");
        if (!appDir.exists()) {
            appDir.mkdir();
        }
        String fileName = System.currentTimeMillis() + ".jpg";
        File file = new File(appDir, fileName);
        try {
            FileOutputStream fos = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 其次把文件插入到系統圖庫
        try {
            MediaStore.Images.Media.insertImage(context.getContentResolver(),
                    file.getAbsolutePath(), fileName, null);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        // 最后通知圖庫更新
        context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + file.getPath())));

    }



    public static void saveImageToGallerys(Context context, Bitmap bmp) {
        if (bmp == null){
            ToastUtils.show(context, "保存出錯了...");
            return;
        }
        // 首先保存圖片
//        File appDir = new File(BaseApplication.app.getTmpDir(), "ywq");
        File appDir = new File(Environment.getExternalStorageDirectory(), "Boohee");
        if (!appDir.exists()) {
            appDir.mkdir();
        }
        String fileName = System.currentTimeMillis() + ".jpg";
        File file = new File(appDir, fileName);
        try {
            FileOutputStream fos = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            ToastUtils.show(context, "文件未發現");
            e.printStackTrace();
        } catch (IOException e) {
            ToastUtils.show(context, "保存出錯了...");
            e.printStackTrace();
        }catch (Exception e){
            ToastUtils.show(context, "保存出錯了...");
            e.printStackTrace();
        }

        // 最后通知圖庫更新
        try {
            MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), fileName, null);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        Uri uri = Uri.fromFile(file);
        intent.setData(uri);
        context.sendBroadcast(intent);
        ToastUtils.show(context, "保存成功了...");
    }

}