android路径获取，android路径,//内部路径Enviro

android路径获取，android路径,//内部路径Enviro

//内部路径Environment.getDataDirectory()=/dataEnvironment.getDownloadCacheDirectory()=/cacheEnvironment.getRootDirectory()=/systemcontext.getCacheDir()=/data/data/com.penngo.test/cachecontext.getFilesDir()=/data/data/com.penngo.test/files// 存储卡路径Environment.getExternalStorageDirectory()=/storage/sdcard0// 可选值DIRECTORY_MUSIC, DIRECTORY_PODCASTS, DIRECTORY_RINGTONES, // DIRECTORY_ALARMS, DIRECTORY_NOTIFICATIONS, DIRECTORY_PICTURES, // DIRECTORY_MOVIES, DIRECTORY_DOWNLOADS, or DIRECTORY_DCIM. 不能为nullEnvironment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)=/storage/sdcard0/Music// 与context.getFilesDir(相似，删除应用时会同时删除context.getExternalFilesDir()=/storage/sdcard0/Android/data/com.penngo.test/files// 与context.getCacheDir()相似，删除应用时会同时删除context.getExternalCacheDir()=/storage/sdcard0/Android/data/com.penngo.test/cacheSystem.getProperty("user.home")=System.getProperty("java.io.tmpdir")=/data/data/com.penngo.test/cachenew File().getAbsolutePath()=/.//判断存储卡是否存在public static boolean isSdCardExist() {  if (Environment.getExternalStorageState().equals(    Environment.MEDIA_MOUNTED)) {//判断是否已经挂载   return true;  }  return false; }