Android安卓中迴圈錄影並檢測記憶卡容量_Android

/** * 迴圈錄影，當記憶卡容量少於300M時，自動刪除視頻列表裡面的第一個檔案 */private void xunhuanluxiang() {if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {File path = Environment.getExternalStorageDirectory();// 取得sdcard檔案路徑StatFs statfs = new StatFs(path.getPath());// 擷取block的SIZElong blocSize = statfs.getBlockSize();// 擷取BLOCK數量long totalBlocks = statfs.getBlockCount();// 己使用的Block的數量long availaBlock = statfs.getAvailableBlocks();// 擷取當前可用記憶體容量，單位：MBlong sd = availaBlock * blocSize / 1024 / 1024;if (sd < 300) {String filepath = (Environment.getExternalStorageDirectory().getAbsolutePath() + "/video/");File file = new File(filepath);if (!file.exists()) {file.mkdirs();}File[] files = file.listFiles();if (files.length > 0) {String childFile[] = file.list();String dele = (filepath + childFile[0]);File file2 = new File(dele);file2.delete();}}} else if (Environment.getExternalStorageState().equals(Environment.MEDIA_REMOVED)) {Toast.makeText(this, "請插入記憶卡", Toast.LENGTH_SHORT).show();}}