张玉龙
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最新评论
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李科笠：
这款编辑器，能够保存从word中复制的图片么？
CKEditor3.x的介绍和使用 -
sybell：
讲得好，但得试一下有没有错。
Mysql 中获取刚插入的自增长id的值 -
zqb666kkk：
nice 很好的启发
spring的jdbcTemplate 返回值为list -
nizen：
不错，有用！
Mysql 中获取刚插入的自增长id的值 -
MEZboy：
真全面，感谢分享！
Radio单选框OnClick事件的设置[网络收集]
String SDPATH = Environment.getExternalStorageDirectory().getPath();
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String externalRootPath = Environment.getExternalStorageDirectory().toString(); ``` 如果需要区分物理SD卡和内置SD卡（在Android 6.0及以上版本），可以使用以下方法： ```java // 获取物理SD卡路径（如果可用...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); StatFs statFs = new StatFs(sdCardPath); // 在API 18及以上版本，使用getTotalBlocks() * getBlockSize() if (Build.VERSION....
File sdcardDir = Environment.getExternalStorageDirectory(); // 进一步处理 } ``` #### 4. 计算SD卡的总空间与可用空间 获取了SD卡的状态之后，我们还需要计算其总的可用空间以及剩余空间。这可以通过`StatFs...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); File file = new File(sdCardPath + "/your_file.txt"); if (file.exists()) { String content = Files.readString(file.toPath()); /...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); // 创建StatFs对象 StatFs statFs = new StatFs(sdCardPath); // 获取每个块的大小（字节） long blockSize = statFs....
String filePath = Environment.getExternalStorageDirectory().getPath() + "/attitude.txt"; File file = new File(filePath); try { BufferedWriter writer = new BufferedWriter(new FileWriter(file, true)...
String externalPath = Environment.getExternalStorageDirectory().getPath() + "/MyApp/data.txt"; File file = new File(externalPath); file.getParentFile().mkdirs(); BufferedWriter writer = new ...
String filePath = Environment.getExternalStorageDirectory().getPath() + "/your_directory/your_file.txt"; try { File file = new File(filePath); if (file.exists() && file.isFile()) { ...
fileName = Environment.getExternalStorageDirectory().getPath()+"/DCIM/Camera/"+bitName ; }else{ // Meizu 、Oppo fileName = Environment.getExternalStorageDirectory().getPath()+"/DCIM/"+bitName ; ...
sdcardDir = Environment.getExternalStorageDirectory(); return sdcardDir.toString(); } else { return null; } } ``` 接下来，我们可以通过创建`File`对象来访问SD卡的根目录，并使用`listFiles()`方法...
String path = Environment.getExternalStorageDirectory().getPath(); // 创建StatFs对象 StatFs statFs = new StatFs(path); // 计算剩余可用空间（单位：字节） long blockSize = statFs.getBlockSizeLong...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); ``` 接下来，我们讨论读取和写入文件。读取文件可以使用`FileInputStream`，写入文件则使用`FileOutputStream`。以下是一个简单的示例...
String sdCardPath = Environment.getExternalStorageDirectory().getPath() + "/your_directory/"; // SD卡的目标路径 try { File dir = new File(sdCardPath); if (!dir.exists()) { dir.mkdirs(); } ...
String path = Environment.getExternalStorageDirectory().getPath() + "/MyFolder/MyFile.txt"; File file = new File(path); try { file.createNewFile(); } catch (IOException e) { e.printStackTrace(); } ...
// return Environment.getExternalStorageDirectory().getPath(); return "/mnt/sdcard"; } /** * * @return 外置sd卡路径 */ private String getSDCard2MemoryPath() { return "/mnt/sdcard1"; ...
StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath()); long blockSize = stat.getBlockSizeLong(); long totalBlocks = stat.getBlockCountLong(); long availableBlocks = stat....
File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSizeLong(); long availableBlocks = stat.getAvailableBlocksLong(); ...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); Log.d("TAG", "SD Card Path: " + sdCardPath); } File externalPublicMusicDir = Environment.getExternalStoragePublicDirectory...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); File dir = new File(sdCardPath + "/DCIM/Camera/"); // 相机照片默认存储路径 File[] files = dir.listFiles(new FileFilter() { @...
String sdCardPath = Environment.getExternalStorageDirectory().getPath(); // 创建StatFs对象 StatFs statFs = new StatFs(sdCardPath); // 获取block size，单位为字节 long blockSize = statFs.getBlockSize...