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This commit is contained in:
fengjignqi
254
app/src/main/java/com/ckkj/water/utils/DownFileUtil.java
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254
app/src/main/java/com/ckkj/water/utils/DownFileUtil.java
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package com.ckkj.water.utils;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.content.Context;
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import android.net.Uri;
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import android.os.Build;
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import android.os.Environment;
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import android.provider.MediaStore;
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import android.util.Log;
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import com.ckkj.water.utils.show.ToastUtil;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import okhttp3.Call;
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import okhttp3.Callback;
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import okhttp3.OkHttpClient;
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import okhttp3.Request;
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import okhttp3.Response;
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public class DownFileUtil {
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private DownFileCallback mCallback;
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public interface DownFileCallback{
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void downSuccess(String msg);
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}
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public DownFileUtil(Context context,String fileUrl,DownFileCallback callback) {
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new Thread(){
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@Override
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public void run() {
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super.run();
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String fileName = null;
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try {
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// 找到最后一个"/"的位置
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int lastSlashIndex = fileUrl.lastIndexOf("/");
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int firstQuestionIndex = -1;
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fileName = "";
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if(fileUrl.contains("?")){
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firstQuestionIndex = fileUrl.indexOf("?");
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fileName = fileUrl.substring(lastSlashIndex + 1,firstQuestionIndex);
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}else{
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// 截取最后一个"/"之后的内容
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fileName = fileUrl.substring(lastSlashIndex + 1);
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}
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} catch (Exception e) {
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}
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// 检查 Android 版本
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
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// 1. 获取公共下载目录的 URI（适用于 Android 10 及以上）
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Uri downloadUri = getDownloadDirectoryUri();
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// 2. 获取 "ChaoYueCang" 文件夹的路径
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Uri folderUri = getFolderUri(downloadUri, "ChaoYueCang");
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if (folderUri == null) {
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// 文件夹不存在，创建该文件夹
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createFolderInDownloads(downloadUri, context,"ChaoYueCang");
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}
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// 1. 获取 MediaStore 的下载目录 URI
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ContentResolver resolver = context.getContentResolver();
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Uri collection = MediaStore.Downloads.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
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// 2. 创建用于保存文件的 ContentValues
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ContentValues values = new ContentValues();
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values.put(MediaStore.MediaColumns.DISPLAY_NAME, fileName); // 文件名
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values.put(MediaStore.MediaColumns.MIME_TYPE, getMimeType(fileName)); // 根据文件扩展名设置 MIME 类型
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values.put(MediaStore.MediaColumns.RELATIVE_PATH, "Download/ChaoYueCang"); // 保存到 Downloads 目录
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// 3. 使用 resolver 插入文件
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Uri fileUri = resolver.insert(collection, values);
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if (fileUri == null) {
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Log.e("FileDownload", "Failed to create new file in Downloads directory.");
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return;
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}
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File sourceFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/ChaoYueCang/"+ fileName);
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String sourceFilePath = sourceFile.getAbsolutePath();
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// 4. 打开输出流，将文件内容写入公共 Downloads 目录
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try (InputStream inputStream = downloadFileFromUrl(fileUrl);
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OutputStream outputStream = resolver.openOutputStream(fileUri)) {
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if (outputStream == null) {
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Log.e("FileDownload", "Failed to open output stream for file.");
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return;
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}
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byte[] buffer = new byte[8192]; // 缓冲区
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int bytesRead;
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while ((bytesRead = inputStream.read(buffer)) != -1) {
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outputStream.write(buffer, 0, bytesRead);
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}
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outputStream.close();
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inputStream.close();
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callback.downSuccess("成功下载至Download文件目录中");
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} catch (IOException e) {
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Log.e("FileDownload", "Error writing to file", e);
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}
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} else {
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// 1. 获取公共下载目录路径
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File downloadsDirectory = new File(Environment.getExternalStorageDirectory(), "Download/ChaoYueCang");
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if (!downloadsDirectory.exists()) {
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downloadsDirectory.mkdirs(); // 如果目录不存在，创建目录
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}
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// 2. 创建目标文件路径
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File targetFile = new File(downloadsDirectory, fileName);
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// 3. 下载文件并保存到公共下载目录
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try (InputStream inputStream = downloadFileFromUrl(fileUrl);
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OutputStream outputStream = new FileOutputStream(targetFile)) {
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byte[] buffer = new byte[4096]; // 缓冲区
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int bytesRead;
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while ((bytesRead = inputStream.read(buffer)) != -1) {
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outputStream.write(buffer, 0, bytesRead);
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}
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outputStream.close();
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inputStream.close();
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callback.downSuccess("成功下载至Download文件目录中");
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} catch (IOException e) {
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Log.e("FileDownload", "Error downloading file", e);
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}
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}
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}
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}.start();
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}
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// 获取文件的 MIME 类型
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private String getMimeType(String fileName) {
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if (fileName.endsWith(".xlsx")) {
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return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
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} else if (fileName.endsWith(".xls")) {
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return "application/vnd.ms-excel";
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}else if (fileName.endsWith(".doc")) {
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return "application/msword";
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}else if (fileName.endsWith(".pdf")) {
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return "application/pdf";
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}else if (fileName.endsWith(".png")) {
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return "image/png";
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}else if (fileName.endsWith(".jpg")) {
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return "image/jpeg";
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}else if (fileName.endsWith(".jpeg")) {
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return "image/jpeg";
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}
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return "application/octet-stream"; // 默认 MIME 类型
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}
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// 从 URL 下载文件并返回输入流
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private InputStream downloadFileFromUrl(String fileUrl) throws IOException {
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URL url = new URL(fileUrl);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("GET");
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connection.setConnectTimeout(10000); // 设置连接超时
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connection.setReadTimeout(10000); // 设置读取超时
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connection.connect();
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return new BufferedInputStream(connection.getInputStream());
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}
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// 获取公共存储的 Downloads 目录 URI（适配 Android 10 及以上）
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private Uri getDownloadDirectoryUri() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
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return MediaStore.Downloads.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
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} else {
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return Uri.parse("file://" + Environment.getExternalStorageDirectory() + "/Download");
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}
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}
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// 获取指定文件夹的 URI
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private Uri getFolderUri(Uri baseUri, String folderName) {
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Uri folderUri = baseUri.buildUpon().appendPath(folderName).build();
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File folder = new File(folderUri.getPath());
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if (folder.exists()) {
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return folderUri;
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} else {
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return null;
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}
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}
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// 在 Downloads 目录中创建一个新文件夹
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private void createFolderInDownloads(Uri baseUri, Context context, String folderName) {
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try {
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ContentValues values = new ContentValues();
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values.put(MediaStore.MediaColumns.DISPLAY_NAME, folderName);
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values.put(MediaStore.MediaColumns.RELATIVE_PATH, "Download/" + folderName);
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ContentResolver resolver = context.getContentResolver();
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Uri folderUri = resolver.insert(baseUri, values);
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if (folderUri == null) {
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} else {
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}
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} catch (Exception e) {
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}
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}
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public static void downloadImage(Context context, String imageUrl) {
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OkHttpClient client = new OkHttpClient();
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Request request = new Request.Builder()
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.url(imageUrl)
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.build();
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client.newCall(request).enqueue(new Callback() {
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@Override
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public void onFailure(Call call, IOException e) {
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e.printStackTrace();
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// 失败处理
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}
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@Override
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public void onResponse(Call call, Response response) throws IOException {
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if (!response.isSuccessful()) {
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// 下载失败处理
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return;
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}
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byte[] imageData = response.body().bytes();
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// 获取图片文件名
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String fileName = "IMG_" + System.currentTimeMillis() + ".jpg";
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// 保存到 MediaStore
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ContentValues values = new ContentValues();
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values.put(MediaStore.Images.Media.DISPLAY_NAME, fileName);
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values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
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values.put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_PICTURES + "/DingDingCar"); // 自定义子目录
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values.put(MediaStore.Images.Media.IS_PENDING, 1);
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ContentResolver resolver = context.getContentResolver();
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Uri collection = MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
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Uri item = resolver.insert(collection, values);
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if (item != null) {
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try (OutputStream out = resolver.openOutputStream(item)) {
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out.write(imageData);
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}
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// 更新状态为可见
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values.clear();
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values.put(MediaStore.Images.Media.IS_PENDING, 0);
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resolver.update(item, values, null, null);
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ToastUtil.showShort(context,"图片已下载至手机");
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}
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}
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});
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}
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}
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