Zip文件下載解壓
- Zip文件下載
項目中採用的是：
api 'com.liulishuo.okdownload:okdownload:1.0.5'
private static void startTask(final String mUrl, final String fileName) {
startTime = System.currentTimeMillis();
DownloadTask task = new DownloadTask.Builder(mUrl, new File(FileUtils.getOtherFolderPath()))
.setFilename(fileName)
// the minimal interval millisecond for callback progress
.setMinIntervalMillisCallbackProcess(30)
// do re-download even if the task has already been completed in the past.
.setPassIfAlreadyCompleted(false)
.build();
task.enqueue(new DownloadListener4WithSpeed() {
private long totalLength;
private String readableTotalLength;
@Override
public void infoReady(@NonNull DownloadTask task, @NonNull BreakpointInfo info,
boolean fromBreakpoint, @NonNull Listener4SpeedAssistExtend.Listener4SpeedModel model) {
totalLength = info.getTotalLength();
readableTotalLength = Util.humanReadableBytes(totalLength, true);
}
@Override
public void progressBlock(@NonNull DownloadTask task, int blockIndex,
long currentBlockOffset, @NonNull SpeedCalculator blockSpeed) {
}
@Override
public void progress(@NonNull DownloadTask task, long currentOffset,
@NonNull SpeedCalculator taskSpeed) {
final String readableOffset = Util.humanReadableBytes(currentOffset, true);
final String progressStatus = readableOffset + "/" + readableTotalLength;
final String speed = taskSpeed.speed();
final String progressStatusWithSpeed = progressStatus + "(" + speed + ")";
Log.i(TAG, "Step 5: progress Speed: " + progressStatusWithSpeed + " | currentOffset " + currentOffset);
// CLog.cameraToFile(TAG, "Step 5: progress Speed: " + progressStatusWithSpeed);
}
@Override
public void blockEnd(@NonNull DownloadTask task, int blockIndex, BlockInfo info,
@NonNull SpeedCalculator blockSpeed) {
}
@Override
public void taskEnd(@NonNull DownloadTask task, @NonNull EndCause cause,
@Nullable Exception realCause, @NonNull SpeedCalculator taskSpeed) {
if (cause == EndCause.COMPLETED) {
Log.i(TAG, "Step 6: down ok ");
// CLog.cameraToFile(TAG, "Step 6: down ok ");
try {
endTime = System.currentTimeMillis() - startTime;
downTotal = endTime;
Log.i(TAG, "down file waster time: " + endTime);
// 開啓線程解壓圖片
......
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void taskStart(@NonNull DownloadTask task) {
}
@Override
public void connectStart(@NonNull DownloadTask task, int blockIndex,
@NonNull Map<String, List<String>> requestHeaderFields) {
}
@Override
public void connectEnd(@NonNull DownloadTask task, int blockIndex,
int responseCode, @NonNull Map<String, List<String>> responseHeaderFields) {
}
});
}
- Zip解壓
/**
* 解壓zip到指定的路徑
*
* @param zipFileString ZIP的名稱
* @param outPathString 要解壓縮路徑
* @throws Exception
*/
public static void unZipFolder(String zipFileString, String outPathString) throws Exception {
// 1. 讀取 ZIP 文件格式的文件實現輸入流過濾器（解壓文件）
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry; // 2. ZipEntry:表示 ZIP 文件條目
byte[] buffer = new byte[BUFFER]; // 3. 緩衝器
int len; // 每次讀出來的長度
Log.i(TAG, "------------------------------------------- ");
String szName;
// 4. getNextEntry 讀取下一個 ZIP 文件條目並將流定位到該條目數據的開始處
while ((zipEntry = inZip.getNextEntry()) != null) {
szName = zipEntry.getName();
Log.i(TAG, "before unZip Folder szName： " + szName);
if (zipEntry.isDirectory()) {
//獲取部件的文件夾名
szName = szName.substring(0, szName.length() - 1);
// Log.i(TAG, "------------------------------------------- ");
// Log.i(TAG, "after unZip Folder szName： " + szName);
File folder = new File(outPathString + File.separator + szName);
boolean mkSuccess = folder.mkdirs();
Log.i(TAG, szName + " directory create " + mkSuccess);
} else {
// Log.i(TAG, "********************************************");
Log.e(TAG, outPathString + File.separator + szName);
File file = new File(outPathString + File.separator + szName);
if (!file.exists()) {
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
file.createNewFile();
}
// 獲取文件的輸出流
FileOutputStream out = new FileOutputStream(file);
// 讀取（字節）字節到緩衝區
while ((len = inZip.read(buffer)) != -1) {
// 從緩衝區（0）位置寫入（字節）字節
out.write(buffer, 0, len);
out.flush();
}
out.close();
}
}
inZip.close();
}