Java File.getPath方法代码示例

import java.io.File; //导入方法依赖的package包/类
private static void compressFile(String currentDir, ZipOutputStream zout, File[] files) throws Exception {
    byte[] buffer = new byte[1024];
    for (File fi : files) {
        if (fi.isDirectory()) {
            compressFile(currentDir + "/" + fi.getName(), zout, fi.listFiles());
            continue;
        }
        ZipEntry ze = new ZipEntry(currentDir + "/" + fi.getName());
        FileInputStream fin = new FileInputStream(fi.getPath());
        zout.putNextEntry(ze);
        int length;
        while ((length = fin.read(buffer)) > 0) {
            zout.write(buffer, 0, length);
        }
        zout.closeEntry();
        fin.close();
    }
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * This removes any files that do not have the correct prefix.
 */
private static void prepareDexDir(File dexDir, final String extractedFilePrefix)
        throws IOException {
    dexDir.mkdir();
    if (!dexDir.isDirectory()) {
        throw new IOException("Failed to create dex directory " + dexDir.getPath());
    }

    // Clean possible old files
    FileFilter filter = new FileFilter() {

        @Override
        public boolean accept(File pathname) {
            return !pathname.getName().startsWith(extractedFilePrefix);
        }
    };
    File[] files = dexDir.listFiles(filter);
    if (files == null) {
        return;
    }
    for (File oldFile : files) {
        if (!oldFile.delete()) {
        } else {
        }
    }
}
 

import java.io.File; //导入方法依赖的package包/类
public void makeParentDirectories(File f) {

        String parent = f.getParent();

        if (parent != null) {
            new File(parent).mkdirs();
        } else {

            // workaround for jdk 1.1 bug (returns null when there is a parent)
            parent = f.getPath();

            int index = parent.lastIndexOf('/');

            if (index > 0) {
                parent = parent.substring(0, index);

                new File(parent).mkdirs();
            }
        }
    }
 

import java.io.File; //导入方法依赖的package包/类
public static ArrayList<String> listClassName(File src) {
    if (!src.exists()) return new ArrayList<>();

    String[] exts = new String[]{"java"};
    Collection<File> files = FileUtils.listFiles(src, exts, true);

    ArrayList<String> classes = new ArrayList<>();
    String srcPath = src.getPath();
    for (File file : files) {
        String javaPath = file.getPath();
        javaPath = javaPath.substring(srcPath.length() + 1, javaPath.length() - 5); //.java
        javaPath = javaPath.replace(File.separator, ".");
        classes.add(javaPath);
    }
    return classes;
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * Creates a new FileWordReader for the given file.
 */
public FileWordReader(File file) throws IOException
{
    super(file.getParentFile());

    this.name   = file.getPath();
    this.reader = new LineNumberReader(
                  new BufferedReader(
                  new FileReader(file)));
}
 

import java.io.File; //导入方法依赖的package包/类
private boolean deleteFile(File file){
    ContentResolver cr = context.getContentResolver();
    Uri uri = MediaStore.Files.getContentUri("external");
    String where = MediaColumns.DATA + "=?";
    String[] selectionArgs = { file.getPath() };
    boolean ret = cr.delete(uri, where, selectionArgs) > 0;
    ret |= file.delete();
    return ret;
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * 获得SD卡总大小
 * 
 * @return
 */
public static long getSDTotalSize() {
	File path = Environment.getExternalStorageDirectory();
	StatFs stat = new StatFs(path.getPath());
	long blockSize = stat.getBlockSize();
	long totalBlocks = stat.getBlockCount();
	return blockSize * totalBlocks;
}
 

import java.io.File; //导入方法依赖的package包/类
@Provides
@Singleton
public Cache provideCache(@Named("cacheDir") File cacheDir, @Named("cacheSize") long cacheSize) {
    Cache cache = null;

    try {
        cache = new Cache(new File(cacheDir.getPath(), HTTP_CACHE_PATH), cacheSize);
    } catch (Exception e) {
        e.printStackTrace();
    }

    return cache;
}
 

import java.io.File; //导入方法依赖的package包/类
public static boolean audiofileIsDown(Context context, String url) {
    if (TextUtils.isEmpty(url)) {
        return false;
    }
    String fileName = url.substring(url.lastIndexOf("/") + 1);
    File mediaStorageDir = new File(
            context.getExternalFilesDir(Environment.DIRECTORY_RINGTONES),
            AudioFolderName);
    if (!mediaStorageDir.exists()) {
        return false;
    }
    String filepath = mediaStorageDir.getPath() + File.separator + fileName;
    File file = new File(filepath);
    return file.exists();
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * Get available internal memory size
 *
 * @return
 */
public static long getAvailableInternalMemorySize() {
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long availableBlocks = stat.getAvailableBlocks();
    return availableBlocks * blockSize;
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * Description of the Method
 */
public void playSelectedSong() {
    getTheme().unloadSample("file:" + currentSong);

    if (selectedItem < itemCount - 1) {
        YassScreenGroup group = getGroupAt(getSelectedGroup());
        YassSongData sd = getSongDataAt(group.getSongAt(selectedItem));
        File f = sd.getAudio();

        int startMillis = sd.getPreviewStart();
        if (startMillis <= 0) {
            startMillis = sd.getMedleyStart();
        }
        if (startMillis <= 0) {
            startMillis = sd.getStart();
        }
        if (startMillis <= 0) {
            startMillis = sd.getGap();
        }
        if (startMillis <= 0) {
            startMillis = 0;
        }

        currentSong = f.getPath();

        if (playbackThread != null) {
            playbackThread.interrupt = true;
        }
        playbackThread = new PlaybackThread(currentSong, startMillis);
        playbackThread.start();
    }
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * Get available external memory size
 *
 * @return
 */
public static long getAvailableExternalMemorySize() {
    if (isExternalMemoryAvailable()) {
        File path = Environment.getExternalStorageDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize = stat.getBlockSize();
        long availableBlocks = stat.getAvailableBlocks();
        return availableBlocks * blockSize;
    } else {
        return ERROR;
    }
}
 

import java.io.File; //导入方法依赖的package包/类
private static String getExecutablePath(String path)
    throws IOException
{
    boolean pathIsQuoted = isQuoted(true, path,
            "Executable name has embedded quote, split the arguments");

    // Win32 CreateProcess requires path to be normalized
    File fileToRun = new File(pathIsQuoted
        ? path.substring(1, path.length() - 1)
        : path);

    // From the [CreateProcess] function documentation:
    //
    // "If the file name does not contain an extension, .exe is appended.
    // Therefore, if the file name extension is .com, this parameter
    // must include the .com extension. If the file name ends in
    // a period (.) with no extension, or if the file name contains a path,
    // .exe is not appended."
    //
    // "If the file name !does not contain a directory path!,
    // the system searches for the executable file in the following
    // sequence:..."
    //
    // In practice ANY non-existent path is extended by [.exe] extension
    // in the [CreateProcess] funcion with the only exception:
    // the path ends by (.)

    return fileToRun.getPath();
}
 

import java.io.File; //导入方法依赖的package包/类
/**
 * Run the test.
 */
@Override
public void doTest() throws IOException, TestFailedException {
    System.out.printf("Xmodem1: basic ASCII file download\n");

    // Process:
    //
    //   1. Extract jermit/tests/data/ALICE26A_NO_EOT.TXT to
    //      a temp file.
    //   2. Spawn 'sx /path/to/ALICE26A_NO_EOT.TXT'
    //   3. Spin up XmodemReceiver to download to a temp file.
    //   4. Read both files and compare contents.

    File source = File.createTempFile("send-xmodem", ".txt");
    saveResourceToFile("jermit/tests/data/ALICE26A_NO_EOT.TXT", source);
    source.deleteOnExit();

    File destination = File.createTempFile("receive-xmodem", ".txt");
    destination.deleteOnExit();

    ProcessBuilder sxb = new ProcessBuilder("sx", source.getPath());
    Process sx = sxb.start();

    // Allow overwrite of destination file, because we just created it.
    XmodemReceiver rx = new XmodemReceiver(XmodemSession.Flavor.VANILLA,
        sx.getInputStream(), sx.getOutputStream(),
        destination.getPath(), true);

    rx.run();
    if (!compareFiles(source, destination)) {
        throw new TestFailedException("Files are not the same");
    }

}
 

import java.io.File; //导入方法依赖的package包/类
/**
     * get all the dex path
     *
     * @param context the application context
     * @return all the dex path
     * @throws PackageManager.NameNotFoundException
     * @throws IOException
     */
    public static List<String> getSourcePaths(Context context) throws PackageManager.NameNotFoundException, IOException {
        ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(context.getPackageName(), 0);
        File sourceApk = new File(applicationInfo.sourceDir);

        List<String> sourcePaths = new ArrayList<>();
        sourcePaths.add(applicationInfo.sourceDir); //add the default apk path

        //the prefix of extracted file, ie: test.classes
        String extractedFilePrefix = sourceApk.getName() + EXTRACTED_NAME_EXT;

//        如果VM已经支持了MultiDex，就不要去Secondary Folder加载 Classesx.zip了，那里已经么有了
//        通过是否存在sp中的multidex.version是不准确的，因为从低版本升级上来的用户，是包含这个sp配置的
        if (!isVMMultidexCapable()) {
            //the total dex numbers
            int totalDexNumber = getMultiDexPreferences(context).getInt(KEY_DEX_NUMBER, 1);
            File dexDir = new File(applicationInfo.dataDir, SECONDARY_FOLDER_NAME);

            for (int secondaryNumber = 2; secondaryNumber <= totalDexNumber; secondaryNumber++) {
                //for each dex file, ie: test.classes2.zip, test.classes3.zip...
                String fileName = extractedFilePrefix + secondaryNumber + EXTRACTED_SUFFIX;
                File extractedFile = new File(dexDir, fileName);
                if (extractedFile.isFile()) {
                    sourcePaths.add(extractedFile.getAbsolutePath());
                    //we ignore the verify zip part
                } else {
                    throw new IOException("Missing extracted secondary dex file '" + extractedFile.getPath() + "'");
                }
            }
        }

        if (XModulable.debuggable()) { // Search instant run support only debuggable
            sourcePaths.addAll(tryLoadInstantRunDexFile(applicationInfo));
        }
        return sourcePaths;
    }