Android WebView文件下载实现
1.调用本机安装的浏览器下载
//url是下载文件的地址 Uri uri = Uri.parse(url); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent);
2.调用系统下载DownloadManage下载
使用方法:DownloadManageUtil.DownloadFile(mcontext, url,"/DownLoad");
package com.example.down; import java.io.File; import java.net.URLDecoder; import android.annotation.SuppressLint; import android.annotation.TargetApi; import android.app.Activity; import android.app.DownloadManager; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.Uri; import android.os.Build; import android.os.Environment; /* * 下载类 * @author shiquanL * */ @TargetApi(Build.VERSION_CODES.GINGERBREAD) @SuppressLint("DefaultLocale") public class DownloadUtil { static String FilePath; static BroadcastReceiver receiver; /* * * @param context 上下文场景 * @param url 下载文件的地址 * @param path SD卡保存的路径 如："/MyDownload",自动在SD下创建该目录。 / public static void DownloadFile(Context context,String url,String path){ / * 注册广播监听下载完成 / receiver = new DownloadCompleteReceiver(); context.registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); /* * 先检测SD卡是否存在 / if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { return; } / * 创建文件夹 / String file = Environment.getExternalStorageDirectory().getPath() +path; File files = new File(file); if (files == null || !files.exists()) { files.mkdir(); } / * 截取文件名 / String fileName = url.substring(url.lastIndexOf("/") + 1); fileName = URLDecoder.decode(fileName); / 系统下载服务类 */ DownloadManager downManager = (DownloadManager)context.getSystemService(Activity.DOWNLOAD_SERVICE); DownloadManager.Request down = new DownloadManager.Request(Uri.parse(url)); down.setShowRunningNotification(true); //在通知栏显示 down.setVisibleInDownloadsUi(true); //输出目录 down.setDestinationInExternalPublicDir(path+"/",fileName); //文件路径 FilePath = file + "/" + fileName; //加入下载队列执行 downManager.enqueue(down); } public static void unregisterReceiver(Context context){ context.unregisterReceiver(receiver); }; /* * 监听下载完成 * @author Administrator * / public static class DownloadCompleteReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals( DownloadManager.ACTION_DOWNLOAD_COMPLETE)) { //获取文件路径 File files = new File(FilePath); //打开这个文件 Intent openFile = getFileIntent(files); context.startActivity(openFile); } } } public static Intent getFileIntent(File file) { Uri uri = Uri.fromFile(file); String type = getMIMEType(file); Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setDataAndType(uri, type); return intent; } private static String getMIMEType(File f){ String type=""; String fName=f.getName(); / 取得扩展名 / String end=fName.substring(fName.lastIndexOf(".")+1,fName.length()).toLowerCase(); / 依扩展名的类型决定MimeType / if(end.equals("pdf")){ type = "application/pdf";// } else if(end.equals("m4a")||end.equals("mp3")||end.equals("mid")|| end.equals("xmf")||end.equals("ogg")||end.equals("wav")){ type = "audio/"; } else if(end.equals("3gp")||end.equals("mp4")){ type = "video/"; } else if(end.equals("jpg")||end.equals("gif")||end.equals("png")|| end.equals("jpeg")||end.equals("bmp")){ type = "image/"; } else if(end.equals("apk")){ type = "application/vnd.android.package-archive"; } else{ // /如果无法直接打开，就跳出软件列表给用户选择 */ type="/*"; } return type; } }
如果想下载完成后调用系统提示音
//提示音 public static void PlaySound(Context context){ String curMusic=Settings.System.getString(context.getContentResolver(), Settings.System.NOTIFICATION_SOUND); MediaPlayer palyer=new MediaPlayer(); try{ palyer.setDataSource(curMusic); palyer.prepare(); }catch(Exception e){ } palyer.start(); }