Android安卓中循环录像并检测内存卡容量_Android

Android安卓中循环录像并检测内存卡容量

2021-03-25 14:44Android开发网 Android

这篇文章主要介绍了Android安卓中循环录像并检测内存卡容量,当内存卡空间已满时,本文还实现自动删除视频列表里面的第一个文件,需要的朋友可以参考下

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									/**

									     * 循环录像，当内存卡容量少于300M时，自动删除视频列表里面的第一个文件

									     */

									    private void xunhuanluxiang() {

									        if (Environment.getExternalStorageState().equals(

									                Environment.MEDIA_MOUNTED)) {

									            File path = Environment.getExternalStorageDirectory();

									            // 取得sdcard文件路径

									            StatFs statfs = new StatFs(path.getPath());

									            // 获取block的SIZE

									            long blocSize = statfs.getBlockSize();

									            // 获取BLOCK数量

									            long totalBlocks = statfs.getBlockCount();

									            // 己使用的Block的数量

									            long availaBlock = statfs.getAvailableBlocks();

									            // 获取当前可用内存容量，单位：MB

									            long 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, "请插入内存卡", Toast.LENGTH_SHORT).show();

									        }

									    }