package cn.flightfeather.thirdapp.util.file;
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import android.content.Context;
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import android.database.Cursor;
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import android.media.MediaScannerConnection;
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import android.net.Uri;
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import android.os.Environment;
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import android.provider.MediaStore;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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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 cn.flightfeather.thirdapp.bean.entity.Mediafile;
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public class FileUtil {
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//复制文件
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public static void copyFile(File oldfile, File newfile) throws IOException {
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FileInputStream ins = new FileInputStream(oldfile);
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FileOutputStream out = new FileOutputStream(newfile);
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//自定义缓冲对象
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byte[] b = new byte[1024];
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int n = 0;
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while ((n = ins.read(b)) != -1) {
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out.write(b, 0, b.length);
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}
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ins.close();
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out.close();
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System.out.println("copy success");
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}
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/**
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* 根据路径获取本机的图片
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* @param mediafile
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* @return
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*/
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public static File getFileFromMediaFile(Mediafile mediafile){
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File file = new File(Environment.getExternalStorageDirectory(), (mediafile.getPath() + mediafile.getDescription()));
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return file;
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}
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//将图片写入磁盘
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public static File writeResponseBodyToDisk(Context context, File file, Mediafile mediafile) {
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try {
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InputStream is = new FileInputStream(file);
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File osFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES),(mediafile.getPath() + mediafile.getDescription()));
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if (osFile.exists()) {
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osFile.delete();
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osFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES),(mediafile.getPath() + mediafile.getDescription()) );
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}
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osFile.getParentFile().mkdirs();
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FileOutputStream fos = new FileOutputStream(osFile);
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BufferedInputStream bis = new BufferedInputStream(is);
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byte[] buffer = new byte[1024];
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int len;
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while ((len = bis.read(buffer)) != -1) {
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fos.write(buffer, 0, len);
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}
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fos.flush();
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fos.close();
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bis.close();
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is.close();
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return file;
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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//将图片插入到系统图库
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public static String sendMediaScanBroadcast(Context context, File file) {
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try {
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String url = MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), file.getName(), null);
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String[] paths = new String[]{file.getAbsolutePath()};
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MediaScannerConnection.scanFile(context, paths, null, null);
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// Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
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// Uri uri = Uri.fromFile(file);
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// intent.setData(uri);
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// context.sendBroadcast(intent);
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return url;
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}
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return null;
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}
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public static String getRealPathFromUri(Context context, Uri contentUri) {
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Cursor cursor = null;
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try {
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// if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
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// String id = contentUri.getLastPathSegment().split(":")[1];
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// final String[] imageColumns = {MediaStore.Images.Media.DATA };
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// final String imageOrderBy = null;
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// Cursor imageCursor = context.getContentResolver().query(contentUri, imageColumns,
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// MediaStore.Images.Media._ID + "="+id, null, imageOrderBy);
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// if (imageCursor.moveToFirst()) {
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// return imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
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// }else{
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// return null;
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// }
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// } else {
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String[] proj = {MediaStore.Images.Media.DATA};
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cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
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int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
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cursor.moveToFirst();
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return cursor.getString(column_index);
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// }
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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if (cursor != null) {
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cursor.close();
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}
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}
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return "";
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}
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}
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