Android(安卓)删除SD卡文件和文件及创建文件夹和文件

package com.jiub.client.mobile.addphoto;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.graphics.Bitmap;import android.os.Environment;import android.util.Log;public class FileUtils {public static String SDPATH = Environment.getExternalStorageDirectory()+ "/formats/";//获取文件夹//保存图片public static void saveBitmap(Bitmap bm, String picName) {Log.e("", "保存图片");Log.d("text", SDPATH);try {if (!isFileExist("")) {File tempf = createSDDir("");}File f = new File(SDPATH, picName + ".JPEG"); if (f.exists()) {f.delete();}FileOutputStream out = new FileOutputStream(f);bm.compress(Bitmap.CompressFormat.JPEG, 90, out);out.flush();out.close();Log.e("", "已经保存");} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public static File createSDDir(String dirName) throws IOException {File dir = new File(SDPATH + dirName);if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {System.out.println("createSDDir:" + dir.getAbsolutePath());System.out.println("createSDDir:" + dir.mkdir());}return dir;}public static boolean isFileExist(String fileName) {File file = new File(SDPATH + fileName);file.isFile();return file.exists();}//删除文件public static void delFile(String fileName){File file = new File(SDPATH + fileName);if(file.isFile()){file.delete();        }file.exists();}//删除文件夹和文件夹里面的文件public static void deleteDir() {File dir = new File(SDPATH);if (dir == null || !dir.exists() || !dir.isDirectory())return;for (File file : dir.listFiles()) {if (file.isFile())file.delete(); // 删除所有文件else if (file.isDirectory())deleteDir(); // 递规的方式删除文件夹}dir.delete();// 删除目录本身}public static boolean fileIsExists(String path) {try {File f = new File(path);if (!f.exists()) {return false;}} catch (Exception e) {return false;}return true;}}
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