Question

我正在创建一个应用程序，用于解压缩列表视图中的所选项目。我正在使用asynctask来解压缩zip文件，所以当它解压缩文件时会有一个progressDialog来显示解压缩它的进度。我成功地显示了progressDialog但是当解压缩完成后，progressDialog没有被解雇而且它被卡在那里。我试图在这里搜索与我的答案相关的stackoverflow，我甚至在我的应用程序上尝试它，但它们都不起作用。请帮助。

这是我到目前为止所做的：解压缩。的java

public class Decompress extends AsyncTask<Void, Integer, Integer> {

private final static String TAG = "Decompress";
private String zipFile;
private String location;

ProgressDialog myProgressDialog;
Context ctx;

public Decompress(String zipFile, String location, Context ctx) {
    super();
    this.zipFile = zipFile;
    this.location = location;
    this.ctx = ctx;
    dirChecker("");
}

@Override
protected void onPreExecute() {
    super.onPreExecute();
    myProgressDialog = new ProgressDialog(ctx);
    myProgressDialog.setMessage("Please Wait... Unzipping");
    myProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    myProgressDialog.setCancelable(false);
    myProgressDialog.show();
}

@Override
protected Integer doInBackground(Void... params){
    int count = 0;

    try  {
        ZipFile zip = new ZipFile(zipFile);
        myProgressDialog.setMax(zip.size());
        FileInputStream fin = new FileInputStream(zipFile);
        ZipInputStream zin = new ZipInputStream(fin);
        ZipEntry ze = null;
        while ((ze = zin.getNextEntry()) != null) {

            Log.v("Decompress", "Unzipping " + ze.getName());
            if(ze.isDirectory()) {
                dirChecker(ze.getName());
            } else {
                FileOutputStream fout = new FileOutputStream(location +ze.getName());

                byte[] buffer = new byte[8192];
                int len;
                while ((len = zin.read(buffer)) != -1) {
                    fout.write(buffer, 0, len);
                    count++;
                    publishProgress(count);// Here I am doing the update of my progress bar
                }
                fout.close();
                zin.closeEntry();

            }
        }
        zin.close();
    } catch(Exception e) {
        Log.e("Decompress", "unzip", e);
    }
    return null;
}

protected void onProgressUpdate(Integer... progress) {
    myProgressDialog.setProgress(progress[0]); //Since it's an inner class, Bar should be able to be called directly
}


protected void onPostExecute(Integer... result) {
    Log.i(TAG, "Completed. Total size: "+result);
    if(myProgressDialog != null && myProgressDialog.isShowing()){
        myProgressDialog.dismiss();
    }

}

private void dirChecker(String dir)
{
    File f = new File(location + dir);
    if(!f.isDirectory())
    {
        f.mkdirs();
    }
} }

这就是我在我的活动中称之为的方式 Archives.java

String zipFile = o.getPath();
    String unzipLocation = Environment.getExternalStorageDirectory() + filePath;

    Decompress d = new Decompress(zipFile, unzipLocation, Archive.this);
    d.execute();

非常感谢你。

Asynctask中的ProgressDialog在解压缩文件完成时不解除

0 个答案: