云相册主要功能fragment：
package com.michael.cloudphotos.Home_Fragment; import android.app.AlertDialog; import android.content.DialogInterface; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView; import android.widget.Toast; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.fragment.app.Fragment; import com.alibaba.sdk.android.oss.ClientConfiguration; import com.alibaba.sdk.android.oss.ClientException; import com.alibaba.sdk.android.oss.OSSClient; import com.alibaba.sdk.android.oss.ServiceException; import com.alibaba.sdk.android.oss.callback.OSSProgressCallback; import com.alibaba.sdk.android.oss.common.OSSLog; import com.alibaba.sdk.android.oss.common.auth.OSSCredentialProvider; import com.alibaba.sdk.android.oss.common.auth.OSSPlainTextAKSKCredentialProvider; import com.alibaba.sdk.android.oss.model.GetObjectRequest; import com.alibaba.sdk.android.oss.model.GetObjectResult; import com.alibaba.sdk.android.oss.model.ObjectMetadata; import com.google.android.material.floatingactionbutton.FloatingActionButton; import com.luck.picture.lib.PictureSelector; import com.luck.picture.lib.config.PictureConfig; import com.luck.picture.lib.config.PictureMimeType; import com.michael.cloudphotos.R; import com.michael.cloudphotos.SQLhelper; import com.michael.cloudphotos.baidu.Base64Util; import com.michael.cloudphotos.baidu.phototheard; import com.michael.cloudphotos.helper; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.ProtocolException; import java.net.URL; import java.net.URLEncoder; import java.util.List; import java.util.Map; public class Photo_Album_Fragment extends Fragment { public SQLhelper sqLhelper=null;//定义数据库helper全局变量 public String id="";//定义当前用户全局变量 public String OSS_ENDPOINT="oss-cn-beijing.aliyuncs.com";//OSS存储对象的OSS_ENDPOINT public String ACCESS_ID="LTAI5tGwtCwv84C1qC2c3iu5";//OSS存储对象的ACCESS_ID public String ACCESS_KEY="Kd6gmeME6xIFY9unTcdH8gaVYCm4LL";//OSS存储对象的ACCESS_key public OSSClient oss;//声明OSSClient对象 public helper p=null;//定义工具类全局变量 public String[] photo=null;//全局变量：数据库存储的照片ID，用于在OSS下载照片 public String[] time=null;//全局变量：读取数据库保存的时间，用于分时间显示图片 public String token="24.565f4c1e92537c3f1801e6c228f4129a.2592000.1625379682.282335-24274696";//百度API的应用的token，有效期一个月 public View vi; public View vi2; ProgressBar progressBar; Handler handler_phptoid=new Handler() { @Override public void handleMessage(@NonNull Message msg) { //获取所有照片id的handle switch (msg.what) { case 1: { // Toast.makeText(getContext(),msg.obj.toString(),Toast.LENGTH_SHORT).show(); photo=p.getphotoid(msg.obj.toString()); p.gettime(id,handler_time); //获取照片id后获取日期 break; } } } }; Handler handler_time=new Handler() { @Override public void handleMessage(@NonNull Message msg) { switch (msg.what) { case 1: { time=p.gettimearray(msg.obj.toString()); setphoto(); //获取日期之后可以下载并显示照片 break; } } } }; Handler handler_delete=new Handler() { @Override public void handleMessage(@NonNull Message msg) { switch (msg.what) { case 1: { refreash(vi2);//刷新界面 break; } } } }; Handler handler=new Handler(){ @Override public void handleMessage(@NonNull Message msg) { switch(msg.what) { case 1 : { try { progressBar.setVisibility(View.GONE); Bundle b = msg.getData(); String result = b.getString("result"); final String photoid = b.getString("photoid"); LinearLayout l = vi.findViewById(R.id.linear1); TextView textView = new TextView(getActivity()); textView.setText(showinfo(result)); textView.setTextSize(15); textView.setPadding(0, 0, 0, 10); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); textView.setLayoutParams(params); l.addView(textView); new AlertDialog.Builder(getActivity()) .setTitle("")//提示框标题 .setView(vi) .setPositiveButton("确定", null).setNegativeButton("删除", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { p = new helper(sqLhelper); p.delete(photoid, handler_delete); } }).create().show(); }catch (Exception e){} } case 2 :break; } } }; public String showinfo(String info){///处理图片识别返回的结果 String Info=""; if(info!=null) { try { JSONObject jsonObject = null; jsonObject = new JSONObject(info); String value = jsonObject.optString("result", null); if(value!=null) { JSONArray arr = new JSONArray(value); for (int i = 0; i < 3; i++) { JSONObject temp = (JSONObject) arr.get(i); Info += "分类：" + temp.getString("root") + ",种类:" + temp.getString("keyword") + " 匹配度：" + temp.getString("score") + " "; info+=temp.getString("keyword")+","; } return Info; } } catch (JSONException e) { e.printStackTrace(); } } return Info; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup contanier, Bundle savedInstanceState){ return inflater.inflate(R.layout.activity_photo__album__fragment,contanier,false); } @Override public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); vi2=view;//将view变成全局变量 FloatingActionButton button=view.findViewById(R.id.open); progressBar=view.findViewById(R.id.progress); // getAuth(); sqLhelper=new SQLhelper(getActivity(),"clouduser",null,1); p=new helper(sqLhelper); if(p.lastuser()) { id=p.lastid(); p.getphotoid(id,handler_phptoid); } button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(p.lastuser()) { PictureSelector.create(getActivity()) .openGallery(PictureMimeType.ofImage()) .forResult(PictureConfig.CHOOSE_REQUEST); }else { Toast.makeText(getActivity(),"请登录！",Toast.LENGTH_SHORT).show(); } } }); } public void update(final String photoid, final ImageView imageView) //下载照片 { new Thread(new Runnable() { @Override public void run() { Bitmap b = null; OSSCredentialProvider credentialProvider = new OSSPlainTextAKSKCredentialProvider(ACCESS_ID, ACCESS_KEY); ClientConfiguration conf = new ClientConfiguration(); conf.setConnectionTimeout(15 * 1000); // 连接超时，默认15秒 conf.setSocketTimeout(15 * 1000); // socket超时，默认15秒 conf.setMaxConcurrentRequest(8); // 最大并发请求数，默认5个 conf.setMaxErrorRetry(2); // 失败后最大重试次数，默认2次 // oss为全局变量，OSS_ENDPOINT是一个OSS区域地址 oss = new OSSClient(getContext(), OSS_ENDPOINT, credentialProvider, conf); //构造下载文件请求 //objectKey等同于objectName，表示从OSS下载文件时需要指定包含文件后缀在内的完整路径，例如abc/efg/123.jpg GetObjectRequest get = new GetObjectRequest("sean1246", photoid); //设置下载进度回调 get.setProgressListener(new OSSProgressCallback<GetObjectRequest>() { @Override public void onProgress(GetObjectRequest request, long currentSize, long totalSize) { OSSLog.logDebug("getobj_progress:" + currentSize + "total_size:" + totalSize, false); } }); try { // 同步执行下载请求，返回结果 GetObjectResult getResult = oss.getObject(get); Log.d("Content-Length是", "" + getResult.getContentLength()); // 获取文件输入流 InputStream inputStream = getResult.getObjectContent(); b = BitmapFactory.decodeStream(inputStream); final Bitmap finalB1 =b; final Bitmap finalB2 = zoomImg(cropBitmap(b),230); getActivity().runOnUiThread(new Runnable() { //必须在主线程显示照片 public void run() { final phototheard p=new phototheard(); imageView.setImageBitmap(finalB2); imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { progressBar.setVisibility(View.VISIBLE); Log.d("长度", String.valueOf(finalB2.getByteCount()/1024/1024)+"兆"+ "，M宽度为" + finalB2.getWidth() + "高度为" + finalB2.getHeight()); LayoutInflater factory = LayoutInflater.from(getActivity()); vi = factory.inflate(R.layout.showinfo, null); LinearLayout l=vi.findViewById(R.id.linear1); ImageView imageView1=new ImageView(getContext()); imageView1.setImageBitmap(zoomImg(finalB1,1000)); l.addView(imageView1); advancedGeneral(finalB2,photoid); } }); } }); ObjectMetadata metadata = getResult.getMetadata(); Log.d("ContentType", metadata.getContentType()); } catch (ClientException e) { // 本地异常如网络异常等 e.printStackTrace(); } catch (ServiceException e) { // 服务异常 Log.e("RequestId", e.getRequestId()); Log.e("ErrorCode", e.getErrorCode()); Log.e("HostId", e.getHostId()); Log.e("RawMessage", e.getRawMessage()); } } }).start(); } public static Bitmap zoomImg(Bitmap bm, int newWidth) {//bitmap的缩放 Bitmap newbm = null; if (bm!=null){ // 获得图片的宽高 int width = bm.getWidth(); int height = bm.getHeight(); // 计算缩放比例 float scaleWidth = ((float) newWidth) / width; // 取得想要缩放的matrix参数 Matrix matrix = new Matrix(); matrix.postScale(scaleWidth, scaleWidth); // 得到新的图片 newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true); } return newbm; } public static Bitmap cropBitmap(Bitmap bitmap) {//从中间截取一个正方形 int w = bitmap.getWidth(); // 得到图片的宽，高 int h = bitmap.getHeight(); int cropWidth = w >= h ? h : w;// 裁切后所取的正方形区域边长 return Bitmap.createBitmap(bitmap, (bitmap.getWidth() - cropWidth) / 2, (bitmap.getHeight() - cropWidth) / 2, cropWidth, cropWidth); } public void setphoto() //显示照片 { LinearLayout linearLayout=getView().findViewById(R.id.linear); String[] a=null; // updownphoto u=new updownphoto(photo[1].split("\+"),handler_photo); // u.run(getActivity()); for(int i=0;i<time.length;i++) { TextView textView = new TextView(getActivity()); textView.setText(time[i]); linearLayout.addView(textView); if(i+1<photo.length) { a = photo[i + 1].split("\+"); for (int j = 0; j < a.length; j = j + 4) { TableLayout tableLayout = new TableLayout(getActivity()); TableRow tableRow = new TableRow(getActivity()); tableLayout.addView(tableRow); linearLayout.addView(tableLayout); for (int p = j; p < p + 4; p++) { if (p == a.length) break; ImageView imageView = new ImageView(getActivity()); imageView.setPadding(20, 20, 20, 20); tableRow.addView(imageView); update(a[p], imageView); } } }else{ Toast.makeText(getActivity(),"点击加号上传照片",Toast.LENGTH_SHORT).show(); } } } public String advancedGeneral(Bitmap bitmap,String photoid) { // 请求url String url = "https://aip.baidubce.com/rest/2.0/image-classify/v2/advanced_general"; try { byte[] imgData =BitmapToBytes(bitmap); // 本地文件路径 String imgStr = Base64Util.encode(imgData); String imgParam = URLEncoder.encode(imgStr, "UTF-8"); String param = "image=" + imgParam; String result = postGeneralUrl(url, param,token,photoid); return result; } catch (Exception e) { e.printStackTrace(); } return null; } private byte[] BitmapToBytes(Bitmap bitmap){ ByteArrayOutputStream baos=new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); } public void getAuth() {//获取token // 获取token地址 new Thread(){ @Override public void run() { String authHost = "https://aip.baidubce.com/oauth/2.0/token?"; String getAccessTokenUrl = authHost // 1. grant_type为固定参数 + "grant_type=client_credentials" // 2. 官网获取的 API Key + "&client_id=lHdmbiCGvK7Iu3AOAROGQG3m" // 3. 官网获取的 Secret Key + "&client_secret=PvGGSDSn1DMpGUj1QL6oLY09Sn9akgfy"; try { URL realUrl = new URL(getAccessTokenUrl); // 打开和URL之间的连接 HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection(); connection.setRequestMethod("GET"); connection.connect(); // 获取所有响应头字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { System.err.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream())); String result = ""; String line; while ((line = in.readLine()) != null) { result += line; } /** * 返回结果示例 */ System.err.println("result:" + result); JSONObject jsonObject = new JSONObject(result); token= jsonObject.getString("access_token"); } catch (Exception e) { System.err.printf("获取token失败！"); e.printStackTrace(System.err); } } }.start(); } public String postGeneralUrl(final String generalUrl, final String params, final String accessToken,final String photoid) throws Exception {//发送识别请求 final String[] a = {""}; new Thread() { @Override public void run() { try { String contentType = "application/x-www-form-urlencoded"; String l = "https://aip.baidubce.com/rest/2.0/image-classify/v2/advanced_general" + "?access_token=" + accessToken; String encoding = "UTF-8"; if (generalUrl.contains("nlp")) { encoding = "GBK"; } URL url = null; url = new URL(l); // 打开和URL之间的连接 HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); // 设置通用的请求属性 connection.setRequestProperty("Content-Type", contentType); connection.setRequestProperty("Connection", "Keep-Alive"); connection.setUseCaches(false); connection.setDoOutput(true); connection.setDoInput(true); // 得到请求的输出流对象 DataOutputStream out = new DataOutputStream(connection.getOutputStream()); out.write(params.getBytes(encoding)); out.flush(); out.close(); // 建立实际的连接 connection.connect(); // 获取所有响应头字段 Map<String, List<String>> headers = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : headers.keySet()) { System.err.println(key + "--->" + headers.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 BufferedReader in = null; in = new BufferedReader( new InputStreamReader(connection.getInputStream(), encoding)); String result = ""; String getLine; while ((getLine = in.readLine()) != null) { result += getLine; System.err.println("result:" + result); a[0] =result; } // Message msg=new Message(); // msg.what=1; // msg.obj=result; // handler.sendMessage(msg); Message msg = handler.obtainMessage(); msg.what=1; //msg.arg1 = 123;//传递整型数据 //msg.obj = "asd";传递object类型 //利用bundle对象来传值 Bundle b = new Bundle(); b.putString("result", result); b.putString("photoid", photoid); msg.setData(b); msg.sendToTarget(); final String p=result; in.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }.start(); return a[0]; } public void refreash(View vi)//刷新fragment { LinearLayout linearLayout=vi.findViewById(R.id.linear); linearLayout.removeAllViews(); p.getphotoid(id,handler_phptoid); } }