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Copy pathFileUtils.java
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Copy pathFileUtils.java
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158 lines (149 loc) · 5.68 KB
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package org.qpython.qpy.utils;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.widget.Toast;
import org.qpython.qpy.R;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class FileUtils {
public static boolean copyToFile(InputStream inputStream, File destFile) {
try {
if (destFile.exists()) {
destFile.delete();
}
OutputStream out = new FileOutputStream(destFile);
try {
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) >= 0) {
out.write(buffer, 0, bytesRead);
}
} finally {
out.close();
}
return true;
} catch (IOException e) {
return false;
}
}
public static boolean copyFile(File srcFile, File destFile) {
boolean result = false;
try {
InputStream in = new FileInputStream(srcFile);
try {
result = copyToFile(in, destFile);
} finally {
in.close();
}
} catch (IOException e) {
result = false;
}
return result;
}
/**
* 调用系统应用打开文件
*/
public static void openFile(Context context, File file) {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//设置intent的Action属性
intent.setAction(Intent.ACTION_VIEW);
//获取文件file的MIME类型
String type = getMIMEType(file);
//设置intent的data和Type属性。
intent.setDataAndType(Uri.fromFile(file), type);
//跳转
try {
context.startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(context, R.string.cant_open, Toast.LENGTH_SHORT).show();
}
}
/***根据文件后缀回去MIME类型****/
private static String getMIMEType(File file) {
String type = "*/*";
String fName = file.getName();
//获取后缀名前的分隔符"."在fName中的位置。
int dotIndex = fName.lastIndexOf(".");
if (dotIndex < 0) {
return type;
}
String end = fName.substring(dotIndex, fName.length()).toLowerCase();
if (end == "") return type;
//在MIME和文件类型的匹配表中找到对应的MIME类型。
for (int i = 0; i < MIME_MapTable.length; i++) {
if (end.equals(MIME_MapTable[i][0]))
type = MIME_MapTable[i][1];
}
return type;
}
private static final String[][] MIME_MapTable = {
// {后缀名，MIME类型}
{".3gp", "video/3gpp"},
{".apk", "application/vnd.android.package-archive"},
{".asf", "video/x-ms-asf"},
{".avi", "video/x-msvideo"},
{".bin", "application/octet-stream"},
{".bmp", "image/bmp"},
{".c", "text/plain"},
{".class", "application/octet-stream"},
{".conf", "text/plain"},
{".cpp", "text/plain"},
{".doc", "application/msword"},
{".docx",
"application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
{".xls", "application/vnd.ms-excel"},
{".xlsx",
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
{".exe", "application/octet-stream"},
{".gif", "image/gif"},
{".gtar", "application/x-gtar"},
{".gz", "application/x-gzip"},
{".h", "text/plain"},
{".htm", "text/html"},
{".html", "text/html"},
{".jar", "application/java-archive"},
{".java", "text/plain"},
{".jpeg", "image/jpeg"},
{".jpg", "image/jpeg"},
{".js", "application/x-javascript"},
{".log", "text/plain"},
{".m3u", "audio/x-mpegurl"},
{".m4a", "audio/mp4a-latm"},
{".m4b", "audio/mp4a-latm"},
{".m4p", "audio/mp4a-latm"},
{".m4u", "video/vnd.mpegurl"},
{".m4v", "video/x-m4v"},
{".mov", "video/quicktime"},
{".mp2", "audio/x-mpeg"},
{".mp3", "audio/x-mpeg"},
{".mp4", "video/mp4"},
{".mpc", "application/vnd.mpohun.certificate"},
{".mpe", "video/mpeg"},
{".mpeg", "video/mpeg"},
{".mpg", "video/mpeg"},
{".mpg4", "video/mp4"},
{".mpga", "audio/mpeg"},
{".msg", "application/vnd.ms-outlook"},
{".ogg", "audio/ogg"},
{".pdf", "application/pdf"},
{".png", "image/png"},
{".pps", "application/vnd.ms-powerpoint"},
{".ppt", "application/vnd.ms-powerpoint"},
{".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
{".prop", "text/plain"}, {".rc", "text/plain"},
{".rmvb", "audio/x-pn-realaudio"}, {".rtf", "application/rtf"},
{".sh", "text/plain"}, {".tar", "application/x-tar"},
{".tgz", "application/x-compressed"}, {".txt", "text/plain"},
{".wav", "audio/x-wav"}, {".wma", "audio/x-ms-wma"},
{".wmv", "audio/x-ms-wmv"},
{".wps", "application/vnd.ms-works"}, {".xml", "text/plain"},
{".z", "application/x-compress"},
{".zip", "application/x-zip-compressed"}, {"", "*/*"}};
}