package com.example.pickerviewlibrary.picker.util;
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import android.content.Context;
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import android.os.Environment;
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import android.util.Log;
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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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/**
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* Created by zuoxiao on 2018/12/31.
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*/
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public class FileUtil {
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public static String getSDPath() {
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File sdDir = null;
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boolean sdCardExist = Environment.getExternalStorageState()
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.equals(Environment.MEDIA_MOUNTED);//判断sd卡是否存在
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if (sdCardExist) {
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sdDir = Environment.getExternalStorageDirectory();//获取跟目录
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}
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return sdDir.toString();
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}
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/**
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* @param context context
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* @param assetName asset文件
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* @param savePath 目标路径
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* @param saveName 目标文件名
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*/
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public static String copyFileFromAssets(Context context, String assetName, String savePath, String saveName) {
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// 若目标文件夹不存在，则创建
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String path = context.getFilesDir() + "/" + savePath;
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File dir = new File(path);
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if (!dir.exists()) {
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if (!dir.mkdir()) {
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Log.d("FileUtils", "mkdir error: " + savePath);
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return "";
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}
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}
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// 拷贝文件
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String filename = path + "/" + saveName;
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File file = new File(filename);
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if (!file.exists()) {
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try {
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InputStream inStream = context.getAssets().open(assetName);
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FileOutputStream fileOutputStream = new FileOutputStream(filename);
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int byteread;
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byte[] buffer = new byte[1024];
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while ((byteread = inStream.read(buffer)) != -1) {
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fileOutputStream.write(buffer, 0, byteread);
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}
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fileOutputStream.flush();
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inStream.close();
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fileOutputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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Log.d("FileUtils", "[copyFileFromAssets] copy asset file: " + assetName + " to : " + filename);
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} else {
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Log.d("FileUtils", "[copyFileFromAssets] file is exist: " + filename);
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}
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return path;
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}
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}
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